Merge branch 'master' into 1271_share_zero

CHANGELOG.md

@@ -1,5 +1,6 @@
 # 5.1.0 (unreleased)
 
+* **MSSQL**: New Microsoft SQL Server data source [#10093](https://github.com/grafana/grafana/pull/10093), [#11298](https://github.com/grafana/grafana/pull/11298), thx [@linuxchips](https://github.com/linuxchips)
 * **Prometheus**: The heatmap panel now support Prometheus histograms [#10009](https://github.com/grafana/grafana/issues/10009)
 * **Postgres/MySQL**: Ability to insert 0s or nulls for missing intervals [#9487](https://github.com/grafana/grafana/issues/9487), thanks [@svenklemm](https://github.com/svenklemm)
 * **Graph**: Thresholds for Right Y axis [#7107](https://github.com/grafana/grafana/issues/7107), thx [@ilgizar](https://github.com/ilgizar)
@@ -13,9 +14,12 @@
 * **OpsGenie**: Add triggered alerts as description [#11046](https://github.com/grafana/grafana/pull/11046), thx [@llamashoes](https://github.com/llamashoes)
 * **Cloudwatch**: Support high resolution metrics [#10925](https://github.com/grafana/grafana/pull/10925), thx [@mtanda](https://github.com/mtanda)
 * **Cloudwatch**: Add dimension filtering to CloudWatch `dimension_values()` [#10029](https://github.com/grafana/grafana/issues/10029), thx [@willyhutw](https://github.com/willyhutw)
-* **Units**: Second to HH:mm:ss formatter [#11107](https://github.com/grafana/grafana/issues/11107), thx [@gladdiologist](https://github.com/gladdiologist) 
+* **Units**: Second to HH:mm:ss formatter [#11107](https://github.com/grafana/grafana/issues/11107), thx [@gladdiologist](https://github.com/gladdiologist)
 * **Singlestat**: Add color to prefix and postfix in singlestat panel [#11143](https://github.com/grafana/grafana/pull/11143), thx [@ApsOps](https://github.com/ApsOps)
 
+# 5.0.4 (unreleased)
+* **Dashboard** Fixed bug where collapsed panels could not be directly linked to/renderer [#11114](https://github.com/grafana/grafana/issues/11114) & [#11086](https://github.com/grafana/grafana/issues/11086)
+
 # 5.0.3 (2018-03-16)
 * **Mysql**: Mysql panic occurring occasionally upon Grafana dashboard access (a bigger patch than the one in 5.0.2) [#11155](https://github.com/grafana/grafana/issues/11155)
 

Gopkg.lock

@@ -153,7 +153,6 @@
   packages = [
     ".",
     "memcache",
-    "mysql",
     "postgres",
     "redis"
   ]
@@ -179,12 +178,14 @@
 [[projects]]
   name = "github.com/go-xorm/core"
   packages = ["."]
-  revision = "e8409d73255791843585964791443dbad877058c"
+  revision = "da1adaf7a28ca792961721a34e6e04945200c890"
+  version = "v0.5.7"
 
 [[projects]]
   name = "github.com/go-xorm/xorm"
   packages = ["."]
-  revision = "6687a2b4e824f4d87f2d65060ec5cb0d896dff1e"
+  revision = "1933dd69e294c0a26c0266637067f24dbb25770c"
+  version = "v0.6.4"
 
 [[projects]]
   branch = "master"
@@ -642,6 +643,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "5e65aeace832f1b4be17e7ff5d5714513c40f31b94b885f64f98f2332968d7c6"
+  inputs-digest = "8a9e651fb8ea49dfd3c6ddc99bd3242b39e453ea9edd11321da79bd2c865e9d1"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -85,13 +85,11 @@ ignored = [
 
 [[constraint]]
   name = "github.com/go-xorm/core"
-  revision = "e8409d73255791843585964791443dbad877058c"
-  #version = "0.5.7" //keeping this since we would rather depend on version then commit
+  version = "0.5.7"
 
 [[constraint]]
   name = "github.com/go-xorm/xorm"
-  revision = "6687a2b4e824f4d87f2d65060ec5cb0d896dff1e"
-  #version = "0.6.4" //keeping this since we would rather depend on version then commit
+  version = "0.6.4"
 
 [[constraint]]
   name = "github.com/gorilla/websocket"

conf/defaults.ini

@@ -82,6 +82,9 @@ max_idle_conn = 2
 # Max conn setting default is 0 (mean not set)
 max_open_conn =
 
+# Connection Max Lifetime default is 14400 (means 14400 seconds or 4 hours)
+conn_max_lifetime = 14400
+
 # Set to true to log the sql calls and execution times.
 log_queries =
 
@@ -125,6 +128,9 @@ cookie_secure = false
 session_life_time = 86400
 gc_interval_time = 86400
 
+# Connection Max Lifetime default is 14400 (means 14400 seconds or 4 hours)
+conn_max_lifetime = 14400
+
 #################################### Data proxy ###########################
 [dataproxy]
 

conf/sample.ini

@@ -90,6 +90,9 @@
 # Max conn setting default is 0 (mean not set)
 ;max_open_conn =
 
+# Connection Max Lifetime default is 14400 (means 14400 seconds or 4 hours)
+;conn_max_lifetime = 14400
+
 # Set to true to log the sql calls and execution times.
 log_queries =
 

docs/sources/administration/provisioning.md

@@ -133,12 +133,18 @@ datasources:
   editable: false
 ```
 
+#### Extra info per datasource
+
+| Datasource | Misc |
+| ---- | ---- |
+| Elasticserach | Elasticsearch uses the `database` property to configure the index for a datasource |
+
 #### Json data
 
 Since not all datasources have the same configuration settings we only have the most common ones as fields. The rest should be stored as a json blob in the `json_data` field. Here are the most common settings that the core datasources use.
 
-| Name | Type | Datasource |Description |
-| ----| ---- | ---- | --- |
+| Name | Type | Datasource | Description |
+| ---- | ---- | ---- | ---- |
 | tlsAuth | boolean | *All* |  Enable TLS authentication using client cert configured in secure json data |
 | tlsAuthWithCACert | boolean | *All* | Enable TLS authtication using CA cert |
 | tlsSkipVerify | boolean | *All* | Controls whether a client verifies the server's certificate chain and host name. |

docs/sources/installation/configuration.md

@@ -234,7 +234,12 @@ The maximum number of connections in the idle connection pool.
 ### max_open_conn
 The maximum number of open connections to the database.
 
+### conn_max_lifetime
+
+Sets the maximum amount of time a connection may be reused. The default is 14400 (which means 14400 seconds or 4 hours). For MySQL, this setting should be shorter than the [`wait_timeout`](https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_wait_timeout) variable.
+
 ### log_queries
+
 Set to `true` to log the sql calls and execution times.
 
 <hr />

docs/sources/reference/templating.md

@@ -1,6 +1,6 @@
 +++
 title = "Variables"
-keywords = ["grafana", "templating", "documentation", "guide"]
+keywords = ["grafana", "templating", "documentation", "guide", "template", "variable"]
 type = "docs"
 [menu.docs]
 name = "Variables"
@@ -80,6 +80,73 @@ Option | Description
 *Regex* | Regex to filter or capture specific parts of the names return by your data source query. Optional.
 *Sort* | Define sort order for options in dropdown. **Disabled** means that the order of options returned by your data source query will be used.
 
+#### Using regex to filter/modify values in the Variable dropdown
+
+Using the Regex Query Option, you filter the list of options returned by the Variable query or modify the options returned.
+
+Examples of filtering on the following list of options:
+
+```text
+backend_01
+backend_02
+backend_03
+backend_04
+```
+
+##### Filter so that only the options that end with `01` or `02` are returned:
+
+Regex:
+
+```regex
+/.*[01|02]/
+```
+
+Result:
+
+```text
+backend_01
+backend_02
+```
+
+##### Filter and modify the options using a regex capture group to return part of the text:
+
+Regex:
+
+```regex
+/.*(01|02)/
+```
+
+Result:
+
+```text
+01
+02
+```
+
+#### Filter and modify - Prometheus Example
+
+List of options:
+
+```text
+up{instance="demo.robustperception.io:9090",job="prometheus"} 1 1521630638000
+up{instance="demo.robustperception.io:9093",job="alertmanager"} 1 1521630638000
+up{instance="demo.robustperception.io:9100",job="node"} 1 1521630638000
+```
+
+Regex:
+
+```regex
+/.*instance="([^"]*).*/
+```
+
+Result:
+
+```text
+demo.robustperception.io:9090
+demo.robustperception.io:9093
+demo.robustperception.io:9100
+```
+
 ### Query expressions
 
 The query expressions are different for each data source.

emails/templates/layouts/default.html

@@ -143,7 +143,7 @@ td[class="stack-column-center"] {
 											<center>
 												<p style="text-align: center; font-size: 12px; color: #999999;">
 													Sent by <a href="[[.AppUrl]]">Grafana v[[.BuildVersion]]</a>
-													<br />&copy; 2016 Grafana and raintank
+													<br />&copy; 2018 Grafana Labs
 												</p>
 											</center>
 										</td>

pkg/api/admin_users.go

@@ -47,14 +47,14 @@ func AdminCreateUser(c *m.ReqContext, form dtos.AdminCreateUserForm) {
 }
 
 func AdminUpdateUserPassword(c *m.ReqContext, form dtos.AdminUpdateUserPasswordForm) {
-	userId := c.ParamsInt64(":id")
+	userID := c.ParamsInt64(":id")
 
 	if len(form.Password) < 4 {
 		c.JsonApiErr(400, "New password too short", nil)
 		return
 	}
 
-	userQuery := m.GetUserByIdQuery{Id: userId}
+	userQuery := m.GetUserByIdQuery{Id: userID}
 
 	if err := bus.Dispatch(&userQuery); err != nil {
 		c.JsonApiErr(500, "Could not read user from database", err)
@@ -64,7 +64,7 @@ func AdminUpdateUserPassword(c *m.ReqContext, form dtos.AdminUpdateUserPasswordF
 	passwordHashed := util.EncodePassword(form.Password, userQuery.Result.Salt)
 
 	cmd := m.ChangeUserPasswordCommand{
-		UserId:      userId,
+		UserId:      userID,
 		NewPassword: passwordHashed,
 	}
 
@@ -77,10 +77,10 @@ func AdminUpdateUserPassword(c *m.ReqContext, form dtos.AdminUpdateUserPasswordF
 }
 
 func AdminUpdateUserPermissions(c *m.ReqContext, form dtos.AdminUpdateUserPermissionsForm) {
-	userId := c.ParamsInt64(":id")
+	userID := c.ParamsInt64(":id")
 
 	cmd := m.UpdateUserPermissionsCommand{
-		UserId:         userId,
+		UserId:         userID,
 		IsGrafanaAdmin: form.IsGrafanaAdmin,
 	}
 
@@ -93,9 +93,9 @@ func AdminUpdateUserPermissions(c *m.ReqContext, form dtos.AdminUpdateUserPermis
 }
 
 func AdminDeleteUser(c *m.ReqContext) {
-	userId := c.ParamsInt64(":id")
+	userID := c.ParamsInt64(":id")
 
-	cmd := m.DeleteUserCommand{UserId: userId}
+	cmd := m.DeleteUserCommand{UserId: userID}
 
 	if err := bus.Dispatch(&cmd); err != nil {
 		c.JsonApiErr(500, "Failed to delete user", err)

pkg/api/alerting.go

@@ -26,9 +26,9 @@ func ValidateOrgAlert(c *m.ReqContext) {
 }
 
 func GetAlertStatesForDashboard(c *m.ReqContext) Response {
-	dashboardId := c.QueryInt64("dashboardId")
+	dashboardID := c.QueryInt64("dashboardId")
 
-	if dashboardId == 0 {
+	if dashboardID == 0 {
 		return ApiError(400, "Missing query parameter dashboardId", nil)
 	}
 
@@ -151,7 +151,7 @@ func GetAlertNotifications(c *m.ReqContext) Response {
 	return Json(200, result)
 }
 
-func GetAlertNotificationById(c *m.ReqContext) Response {
+func GetAlertNotificationByID(c *m.ReqContext) Response {
 	query := &m.GetAlertNotificationsQuery{
 		OrgId: c.OrgId,
 		Id:    c.ParamsInt64("notificationId"),

pkg/api/annotations.go

@@ -52,7 +52,7 @@ func (e *CreateAnnotationError) Error() string {
 }
 
 func PostAnnotation(c *m.ReqContext, cmd dtos.PostAnnotationsCmd) Response {
-	if canSave, err := canSaveByDashboardId(c, cmd.DashboardId); err != nil || !canSave {
+	if canSave, err := canSaveByDashboardID(c, cmd.DashboardId); err != nil || !canSave {
 		return dashboardGuardianResponse(err)
 	}
 
@@ -179,18 +179,18 @@ func PostGraphiteAnnotation(c *m.ReqContext, cmd dtos.PostGraphiteAnnotationsCmd
 }
 
 func UpdateAnnotation(c *m.ReqContext, cmd dtos.UpdateAnnotationsCmd) Response {
-	annotationId := c.ParamsInt64(":annotationId")
+	annotationID := c.ParamsInt64(":annotationId")
 
 	repo := annotations.GetRepository()
 
-	if resp := canSave(c, repo, annotationId); resp != nil {
+	if resp := canSave(c, repo, annotationID); resp != nil {
 		return resp
 	}
 
 	item := annotations.Item{
 		OrgId:  c.OrgId,
 		UserId: c.UserId,
-		Id:     annotationId,
+		Id:     annotationID,
 		Epoch:  cmd.Time / 1000,
 		Text:   cmd.Text,
 		Tags:   cmd.Tags,
@@ -254,14 +254,14 @@ func DeleteAnnotationById(c *m.ReqContext) Response {
 
 func DeleteAnnotationRegion(c *m.ReqContext) Response {
 	repo := annotations.GetRepository()
-	regionId := c.ParamsInt64(":regionId")
+	regionID := c.ParamsInt64(":regionId")
 
-	if resp := canSave(c, repo, regionId); resp != nil {
+	if resp := canSave(c, repo, regionID); resp != nil {
 		return resp
 	}
 
 	err := repo.Delete(&annotations.DeleteParams{
-		RegionId: regionId,
+		RegionId: regionID,
 	})
 
 	if err != nil {
@@ -271,13 +271,13 @@ func DeleteAnnotationRegion(c *m.ReqContext) Response {
 	return ApiSuccess("Annotation region deleted")
 }
 
-func canSaveByDashboardId(c *m.ReqContext, dashboardId int64) (bool, error) {
-	if dashboardId == 0 && !c.SignedInUser.HasRole(m.ROLE_EDITOR) {
+func canSaveByDashboardID(c *m.ReqContext, dashboardID int64) (bool, error) {
+	if dashboardID == 0 && !c.SignedInUser.HasRole(m.ROLE_EDITOR) {
 		return false, nil
 	}
 
-	if dashboardId > 0 {
-		guardian := guardian.New(dashboardId, c.OrgId, c.SignedInUser)
+	if dashboardID > 0 {
+		guardian := guardian.New(dashboardID, c.OrgId, c.SignedInUser)
 		if canEdit, err := guardian.CanEdit(); err != nil || !canEdit {
 			return false, err
 		}
@@ -293,25 +293,25 @@ func canSave(c *m.ReqContext, repo annotations.Repository, annotationId int64) R
 		return ApiError(500, "Could not find annotation to update", err)
 	}
 
-	dashboardId := items[0].DashboardId
+	dashboardID := items[0].DashboardId
 
-	if canSave, err := canSaveByDashboardId(c, dashboardId); err != nil || !canSave {
+	if canSave, err := canSaveByDashboardID(c, dashboardID); err != nil || !canSave {
 		return dashboardGuardianResponse(err)
 	}
 
 	return nil
 }
 
-func canSaveByRegionId(c *m.ReqContext, repo annotations.Repository, regionId int64) Response {
-	items, err := repo.Find(&annotations.ItemQuery{RegionId: regionId, OrgId: c.OrgId})
+func canSaveByRegionID(c *m.ReqContext, repo annotations.Repository, regionID int64) Response {
+	items, err := repo.Find(&annotations.ItemQuery{RegionId: regionID, OrgId: c.OrgId})
 
 	if err != nil || len(items) == 0 {
 		return ApiError(500, "Could not find annotation to update", err)
 	}
 
-	dashboardId := items[0].DashboardId
+	dashboardID := items[0].DashboardId
 
-	if canSave, err := canSaveByDashboardId(c, dashboardId); err != nil || !canSave {
+	if canSave, err := canSaveByDashboardID(c, dashboardID); err != nil || !canSave {
 		return dashboardGuardianResponse(err)
 	}
 

pkg/api/api.go

@@ -15,7 +15,7 @@ func (hs *HttpServer) registerRoutes() {
 	reqGrafanaAdmin := middleware.Auth(&middleware.AuthOptions{ReqSignedIn: true, ReqGrafanaAdmin: true})
 	reqEditorRole := middleware.RoleAuth(m.ROLE_EDITOR, m.ROLE_ADMIN)
 	reqOrgAdmin := middleware.RoleAuth(m.ROLE_ADMIN)
-	redirectFromLegacyDashboardUrl := middleware.RedirectFromLegacyDashboardUrl()
+	redirectFromLegacyDashboardUrl := middleware.RedirectFromLegacyDashboardURL()
 	redirectFromLegacyDashboardSoloUrl := middleware.RedirectFromLegacyDashboardSoloUrl()
 	quota := middleware.Quota
 	bind := binding.Bind
@@ -110,7 +110,7 @@ func (hs *HttpServer) registerRoutes() {
 	r.Get("/api/snapshots-delete/:key", reqEditorRole, wrap(DeleteDashboardSnapshot))
 
 	// api renew session based on remember cookie
-	r.Get("/api/login/ping", quota("session"), LoginApiPing)
+	r.Get("/api/login/ping", quota("session"), LoginAPIPing)
 
 	// authed api
 	r.Group("/api", func(apiRoute RouteRegister) {
@@ -139,7 +139,7 @@ func (hs *HttpServer) registerRoutes() {
 		apiRoute.Group("/users", func(usersRoute RouteRegister) {
 			usersRoute.Get("/", wrap(SearchUsers))
 			usersRoute.Get("/search", wrap(SearchUsersWithPaging))
-			usersRoute.Get("/:id", wrap(GetUserById))
+			usersRoute.Get("/:id", wrap(GetUserByID))
 			usersRoute.Get("/:id/orgs", wrap(GetUserOrgList))
 			// query parameters /users/lookup?loginOrEmail=admin@example.com
 			usersRoute.Get("/lookup", wrap(GetUserByLoginOrEmail))
@@ -149,11 +149,11 @@ func (hs *HttpServer) registerRoutes() {
 
 		// team (admin permission required)
 		apiRoute.Group("/teams", func(teamsRoute RouteRegister) {
-			teamsRoute.Get("/:teamId", wrap(GetTeamById))
+			teamsRoute.Get("/:teamId", wrap(GetTeamByID))
 			teamsRoute.Get("/search", wrap(SearchTeams))
 			teamsRoute.Post("/", bind(m.CreateTeamCommand{}), wrap(CreateTeam))
 			teamsRoute.Put("/:teamId", bind(m.UpdateTeamCommand{}), wrap(UpdateTeam))
-			teamsRoute.Delete("/:teamId", wrap(DeleteTeamById))
+			teamsRoute.Delete("/:teamId", wrap(DeleteTeamByID))
 			teamsRoute.Get("/:teamId/members", wrap(GetTeamMembers))
 			teamsRoute.Post("/:teamId/members", bind(m.AddTeamMemberCommand{}), wrap(AddTeamMember))
 			teamsRoute.Delete("/:teamId/members/:userId", wrap(RemoveTeamMember))
@@ -192,10 +192,10 @@ func (hs *HttpServer) registerRoutes() {
 
 		// orgs (admin routes)
 		apiRoute.Group("/orgs/:orgId", func(orgsRoute RouteRegister) {
-			orgsRoute.Get("/", wrap(GetOrgById))
+			orgsRoute.Get("/", wrap(GetOrgByID))
 			orgsRoute.Put("/", bind(dtos.UpdateOrgForm{}), wrap(UpdateOrg))
 			orgsRoute.Put("/address", bind(dtos.UpdateOrgAddressForm{}), wrap(UpdateOrgAddress))
-			orgsRoute.Delete("/", wrap(DeleteOrgById))
+			orgsRoute.Delete("/", wrap(DeleteOrgByID))
 			orgsRoute.Get("/users", wrap(GetOrgUsers))
 			orgsRoute.Post("/users", bind(m.AddOrgUserCommand{}), wrap(AddOrgUser))
 			orgsRoute.Patch("/users/:userId", bind(m.UpdateOrgUserCommand{}), wrap(UpdateOrgUser))
@@ -211,9 +211,9 @@ func (hs *HttpServer) registerRoutes() {
 
 		// auth api keys
 		apiRoute.Group("/auth/keys", func(keysRoute RouteRegister) {
-			keysRoute.Get("/", wrap(GetApiKeys))
-			keysRoute.Post("/", quota("api_key"), bind(m.AddApiKeyCommand{}), wrap(AddApiKey))
-			keysRoute.Delete("/:id", wrap(DeleteApiKey))
+			keysRoute.Get("/", wrap(GetAPIKeys))
+			keysRoute.Post("/", quota("api_key"), bind(m.AddApiKeyCommand{}), wrap(AddAPIKey))
+			keysRoute.Delete("/:id", wrap(DeleteAPIKey))
 		}, reqOrgAdmin)
 
 		// Preferences
@@ -226,16 +226,16 @@ func (hs *HttpServer) registerRoutes() {
 			datasourceRoute.Get("/", wrap(GetDataSources))
 			datasourceRoute.Post("/", quota("data_source"), bind(m.AddDataSourceCommand{}), wrap(AddDataSource))
 			datasourceRoute.Put("/:id", bind(m.UpdateDataSourceCommand{}), wrap(UpdateDataSource))
-			datasourceRoute.Delete("/:id", wrap(DeleteDataSourceById))
+			datasourceRoute.Delete("/:id", wrap(DeleteDataSourceByID))
 			datasourceRoute.Delete("/name/:name", wrap(DeleteDataSourceByName))
-			datasourceRoute.Get("/:id", wrap(GetDataSourceById))
+			datasourceRoute.Get("/:id", wrap(GetDataSourceByID))
 			datasourceRoute.Get("/name/:name", wrap(GetDataSourceByName))
 		}, reqOrgAdmin)
 
-		apiRoute.Get("/datasources/id/:name", wrap(GetDataSourceIdByName), reqSignedIn)
+		apiRoute.Get("/datasources/id/:name", wrap(GetDataSourceIDByName), reqSignedIn)
 
 		apiRoute.Get("/plugins", wrap(GetPluginList))
-		apiRoute.Get("/plugins/:pluginId/settings", wrap(GetPluginSettingById))
+		apiRoute.Get("/plugins/:pluginId/settings", wrap(GetPluginSettingByID))
 		apiRoute.Get("/plugins/:pluginId/markdown/:name", wrap(GetPluginMarkdown))
 
 		apiRoute.Group("/plugins", func(pluginRoute RouteRegister) {
@@ -250,11 +250,11 @@ func (hs *HttpServer) registerRoutes() {
 		// Folders
 		apiRoute.Group("/folders", func(folderRoute RouteRegister) {
 			folderRoute.Get("/", wrap(GetFolders))
-			folderRoute.Get("/id/:id", wrap(GetFolderById))
+			folderRoute.Get("/id/:id", wrap(GetFolderByID))
 			folderRoute.Post("/", bind(m.CreateFolderCommand{}), wrap(CreateFolder))
 
 			folderRoute.Group("/:uid", func(folderUidRoute RouteRegister) {
-				folderUidRoute.Get("/", wrap(GetFolderByUid))
+				folderUidRoute.Get("/", wrap(GetFolderByUID))
 				folderUidRoute.Put("/", bind(m.UpdateFolderCommand{}), wrap(UpdateFolder))
 				folderUidRoute.Delete("/", wrap(DeleteFolder))
 
@@ -268,7 +268,7 @@ func (hs *HttpServer) registerRoutes() {
 		// Dashboard
 		apiRoute.Group("/dashboards", func(dashboardRoute RouteRegister) {
 			dashboardRoute.Get("/uid/:uid", wrap(GetDashboard))
-			dashboardRoute.Delete("/uid/:uid", wrap(DeleteDashboardByUid))
+			dashboardRoute.Delete("/uid/:uid", wrap(DeleteDashboardByUID))
 
 			dashboardRoute.Get("/db/:slug", wrap(GetDashboard))
 			dashboardRoute.Delete("/db/:slug", wrap(DeleteDashboard))
@@ -314,7 +314,7 @@ func (hs *HttpServer) registerRoutes() {
 		// metrics
 		apiRoute.Post("/tsdb/query", bind(dtos.MetricRequest{}), wrap(QueryMetrics))
 		apiRoute.Get("/tsdb/testdata/scenarios", wrap(GetTestDataScenarios))
-		apiRoute.Get("/tsdb/testdata/gensql", reqGrafanaAdmin, wrap(GenerateSqlTestData))
+		apiRoute.Get("/tsdb/testdata/gensql", reqGrafanaAdmin, wrap(GenerateSQLTestData))
 		apiRoute.Get("/tsdb/testdata/random-walk", wrap(GetTestDataRandomWalk))
 
 		apiRoute.Group("/alerts", func(alertsRoute RouteRegister) {
@@ -332,7 +332,7 @@ func (hs *HttpServer) registerRoutes() {
 			alertNotifications.Post("/test", bind(dtos.NotificationTestCommand{}), wrap(NotificationTest))
 			alertNotifications.Post("/", bind(m.CreateAlertNotificationCommand{}), wrap(CreateAlertNotification))
 			alertNotifications.Put("/:notificationId", bind(m.UpdateAlertNotificationCommand{}), wrap(UpdateAlertNotification))
-			alertNotifications.Get("/:notificationId", wrap(GetAlertNotificationById))
+			alertNotifications.Get("/:notificationId", wrap(GetAlertNotificationByID))
 			alertNotifications.Delete("/:notificationId", wrap(DeleteAlertNotification))
 		}, reqEditorRole)
 

pkg/api/apikey.go

@@ -7,7 +7,7 @@ import (
 	m "github.com/grafana/grafana/pkg/models"
 )
 
-func GetApiKeys(c *m.ReqContext) Response {
+func GetAPIKeys(c *m.ReqContext) Response {
 	query := m.GetApiKeysQuery{OrgId: c.OrgId}
 
 	if err := bus.Dispatch(&query); err != nil {
@@ -26,7 +26,7 @@ func GetApiKeys(c *m.ReqContext) Response {
 	return Json(200, result)
 }
 
-func DeleteApiKey(c *m.ReqContext) Response {
+func DeleteAPIKey(c *m.ReqContext) Response {
 	id := c.ParamsInt64(":id")
 
 	cmd := &m.DeleteApiKeyCommand{Id: id, OrgId: c.OrgId}
@@ -39,7 +39,7 @@ func DeleteApiKey(c *m.ReqContext) Response {
 	return ApiSuccess("API key deleted")
 }
 
-func AddApiKey(c *m.ReqContext, cmd m.AddApiKeyCommand) Response {
+func AddAPIKey(c *m.ReqContext, cmd m.AddApiKeyCommand) Response {
 	if !cmd.Role.IsValid() {
 		return ApiError(400, "Invalid role specified", nil)
 	}

pkg/api/app_routes.go

@@ -55,11 +55,11 @@ func InitAppPluginRoutes(r *macaron.Macaron) {
 	}
 }
 
-func AppPluginRoute(route *plugins.AppPluginRoute, appId string) macaron.Handler {
+func AppPluginRoute(route *plugins.AppPluginRoute, appID string) macaron.Handler {
 	return func(c *m.ReqContext) {
 		path := c.Params("*")
 
-		proxy := pluginproxy.NewApiPluginProxy(c, path, route, appId)
+		proxy := pluginproxy.NewApiPluginProxy(c, path, route, appID)
 		proxy.Transport = pluginProxyTransport
 		proxy.ServeHTTP(c.Resp, c.Req.Request)
 	}

pkg/api/common_test.go

@@ -99,7 +99,7 @@ func setupScenarioContext(url string) *scenarioContext {
 	}))
 
 	sc.m.Use(middleware.GetContextHandler())
-	sc.m.Use(middleware.Sessioner(&session.Options{}))
+	sc.m.Use(middleware.Sessioner(&session.Options{}, 0))
 
 	return sc
 }

pkg/api/dashboard.go

@@ -22,12 +22,12 @@ import (
 	"github.com/grafana/grafana/pkg/util"
 )
 
-func isDashboardStarredByUser(c *m.ReqContext, dashId int64) (bool, error) {
+func isDashboardStarredByUser(c *m.ReqContext, dashID int64) (bool, error) {
 	if !c.IsSignedIn {
 		return false, nil
 	}
 
-	query := m.IsStarredByUserQuery{UserId: c.UserId, DashboardId: dashId}
+	query := m.IsStarredByUserQuery{UserId: c.UserId, DashboardId: dashID}
 	if err := bus.Dispatch(&query); err != nil {
 		return false, err
 	}
@@ -114,24 +114,22 @@ func GetDashboard(c *m.ReqContext) Response {
 	return Json(200, dto)
 }
 
-func getUserLogin(userId int64) string {
-	query := m.GetUserByIdQuery{Id: userId}
+func getUserLogin(userID int64) string {
+	query := m.GetUserByIdQuery{Id: userID}
 	err := bus.Dispatch(&query)
 	if err != nil {
 		return "Anonymous"
-	} else {
-		user := query.Result
-		return user.Login
 	}
+	return query.Result.Login
 }
 
-func getDashboardHelper(orgId int64, slug string, id int64, uid string) (*m.Dashboard, Response) {
+func getDashboardHelper(orgID int64, slug string, id int64, uid string) (*m.Dashboard, Response) {
 	var query m.GetDashboardQuery
 
 	if len(uid) > 0 {
-		query = m.GetDashboardQuery{Uid: uid, Id: id, OrgId: orgId}
+		query = m.GetDashboardQuery{Uid: uid, Id: id, OrgId: orgID}
 	} else {
-		query = m.GetDashboardQuery{Slug: slug, Id: id, OrgId: orgId}
+		query = m.GetDashboardQuery{Slug: slug, Id: id, OrgId: orgID}
 	}
 
 	if err := bus.Dispatch(&query); err != nil {
@@ -173,7 +171,7 @@ func DeleteDashboard(c *m.ReqContext) Response {
 	})
 }
 
-func DeleteDashboardByUid(c *m.ReqContext) Response {
+func DeleteDashboardByUID(c *m.ReqContext) Response {
 	dash, rsp := getDashboardHelper(c.OrgId, "", 0, c.Params(":uid"))
 	if rsp != nil {
 		return rsp
@@ -291,9 +289,8 @@ func GetHomeDashboard(c *m.ReqContext) Response {
 			url := m.GetDashboardUrl(slugQuery.Result.Uid, slugQuery.Result.Slug)
 			dashRedirect := dtos.DashboardRedirect{RedirectUri: url}
 			return Json(200, &dashRedirect)
-		} else {
-			log.Warn("Failed to get slug from database, %s", err.Error())
 		}
+		log.Warn("Failed to get slug from database, %s", err.Error())
 	}
 
 	filePath := path.Join(setting.StaticRootPath, "dashboards/home.json")
@@ -339,22 +336,22 @@ func addGettingStartedPanelToHomeDashboard(dash *simplejson.Json) {
 
 // GetDashboardVersions returns all dashboard versions as JSON
 func GetDashboardVersions(c *m.ReqContext) Response {
-	dashId := c.ParamsInt64(":dashboardId")
+	dashID := c.ParamsInt64(":dashboardId")
 
-	guardian := guardian.New(dashId, c.OrgId, c.SignedInUser)
+	guardian := guardian.New(dashID, c.OrgId, c.SignedInUser)
 	if canSave, err := guardian.CanSave(); err != nil || !canSave {
 		return dashboardGuardianResponse(err)
 	}
 
 	query := m.GetDashboardVersionsQuery{
 		OrgId:       c.OrgId,
-		DashboardId: dashId,
+		DashboardId: dashID,
 		Limit:       c.QueryInt("limit"),
 		Start:       c.QueryInt("start"),
 	}
 
 	if err := bus.Dispatch(&query); err != nil {
-		return ApiError(404, fmt.Sprintf("No versions found for dashboardId %d", dashId), err)
+		return ApiError(404, fmt.Sprintf("No versions found for dashboardId %d", dashID), err)
 	}
 
 	for _, version := range query.Result {
@@ -378,21 +375,21 @@ func GetDashboardVersions(c *m.ReqContext) Response {
 
 // GetDashboardVersion returns the dashboard version with the given ID.
 func GetDashboardVersion(c *m.ReqContext) Response {
-	dashId := c.ParamsInt64(":dashboardId")
+	dashID := c.ParamsInt64(":dashboardId")
 
-	guardian := guardian.New(dashId, c.OrgId, c.SignedInUser)
+	guardian := guardian.New(dashID, c.OrgId, c.SignedInUser)
 	if canSave, err := guardian.CanSave(); err != nil || !canSave {
 		return dashboardGuardianResponse(err)
 	}
 
 	query := m.GetDashboardVersionQuery{
 		OrgId:       c.OrgId,
-		DashboardId: dashId,
+		DashboardId: dashID,
 		Version:     c.ParamsInt(":id"),
 	}
 
 	if err := bus.Dispatch(&query); err != nil {
-		return ApiError(500, fmt.Sprintf("Dashboard version %d not found for dashboardId %d", query.Version, dashId), err)
+		return ApiError(500, fmt.Sprintf("Dashboard version %d not found for dashboardId %d", query.Version, dashID), err)
 	}
 
 	creator := "Anonymous"

pkg/api/dashboard_permission.go

@@ -10,14 +10,14 @@ import (
 )
 
 func GetDashboardPermissionList(c *m.ReqContext) Response {
-	dashId := c.ParamsInt64(":dashboardId")
+	dashID := c.ParamsInt64(":dashboardId")
 
-	_, rsp := getDashboardHelper(c.OrgId, "", dashId, "")
+	_, rsp := getDashboardHelper(c.OrgId, "", dashID, "")
 	if rsp != nil {
 		return rsp
 	}
 
-	g := guardian.New(dashId, c.OrgId, c.SignedInUser)
+	g := guardian.New(dashID, c.OrgId, c.SignedInUser)
 
 	if canAdmin, err := g.CanAdmin(); err != nil || !canAdmin {
 		return dashboardGuardianResponse(err)
@@ -38,25 +38,25 @@ func GetDashboardPermissionList(c *m.ReqContext) Response {
 }
 
 func UpdateDashboardPermissions(c *m.ReqContext, apiCmd dtos.UpdateDashboardAclCommand) Response {
-	dashId := c.ParamsInt64(":dashboardId")
+	dashID := c.ParamsInt64(":dashboardId")
 
-	_, rsp := getDashboardHelper(c.OrgId, "", dashId, "")
+	_, rsp := getDashboardHelper(c.OrgId, "", dashID, "")
 	if rsp != nil {
 		return rsp
 	}
 
-	g := guardian.New(dashId, c.OrgId, c.SignedInUser)
+	g := guardian.New(dashID, c.OrgId, c.SignedInUser)
 	if canAdmin, err := g.CanAdmin(); err != nil || !canAdmin {
 		return dashboardGuardianResponse(err)
 	}
 
 	cmd := m.UpdateDashboardAclCommand{}
-	cmd.DashboardId = dashId
+	cmd.DashboardId = dashID
 
 	for _, item := range apiCmd.Items {
 		cmd.Items = append(cmd.Items, &m.DashboardAcl{
 			OrgId:       c.OrgId,
-			DashboardId: dashId,
+			DashboardId: dashID,
 			UserId:      item.UserId,
 			TeamId:      item.TeamId,
 			Role:        item.Role,

pkg/api/dashboard_snapshot.go

@@ -106,9 +106,9 @@ func DeleteDashboardSnapshot(c *m.ReqContext) Response {
 		return ApiError(404, "Failed to get dashboard snapshot", nil)
 	}
 	dashboard := query.Result.Dashboard
-	dashboardId := dashboard.Get("id").MustInt64()
+	dashboardID := dashboard.Get("id").MustInt64()
 
-	guardian := guardian.New(dashboardId, c.OrgId, c.SignedInUser)
+	guardian := guardian.New(dashboardID, c.OrgId, c.SignedInUser)
 	canEdit, err := guardian.CanEdit()
 	if err != nil {
 		return ApiError(500, "Error while checking permissions for snapshot", err)

pkg/api/dashboard_test.go

@@ -105,7 +105,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 403)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -165,7 +165,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 200)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -271,7 +271,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 403)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -329,7 +329,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 403)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -398,7 +398,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 200)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -468,7 +468,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 403)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -527,7 +527,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 200)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -594,7 +594,7 @@ func TestDashboardApiEndpoint(t *testing.T) {
 			})
 
 			loggedInUserScenarioWithRole("When calling DELETE on", "DELETE", "/api/dashboards/uid/abcdefghi", "/api/dashboards/uid/:uid", role, func(sc *scenarioContext) {
-				CallDeleteDashboardByUid(sc)
+				CallDeleteDashboardByUID(sc)
 				So(sc.resp.Code, ShouldEqual, 403)
 
 				Convey("Should lookup dashboard by uid", func() {
@@ -837,12 +837,12 @@ func CallDeleteDashboard(sc *scenarioContext) {
 	sc.fakeReqWithParams("DELETE", sc.url, map[string]string{}).exec()
 }
 
-func CallDeleteDashboardByUid(sc *scenarioContext) {
+func CallDeleteDashboardByUID(sc *scenarioContext) {
 	bus.AddHandler("test", func(cmd *m.DeleteDashboardCommand) error {
 		return nil
 	})
 
-	sc.handlerFunc = DeleteDashboardByUid
+	sc.handlerFunc = DeleteDashboardByUID
 	sc.fakeReqWithParams("DELETE", sc.url, map[string]string{}).exec()
 }
 

pkg/api/dataproxy.go

@@ -13,19 +13,19 @@ import (
 
 const HeaderNameNoBackendCache = "X-Grafana-NoCache"
 
-func (hs *HttpServer) getDatasourceById(id int64, orgId int64, nocache bool) (*m.DataSource, error) {
+func (hs *HttpServer) getDatasourceByID(id int64, orgID int64, nocache bool) (*m.DataSource, error) {
 	cacheKey := fmt.Sprintf("ds-%d", id)
 
 	if !nocache {
 		if cached, found := hs.cache.Get(cacheKey); found {
 			ds := cached.(*m.DataSource)
-			if ds.OrgId == orgId {
+			if ds.OrgId == orgID {
 				return ds, nil
 			}
 		}
 	}
 
-	query := m.GetDataSourceByIdQuery{Id: id, OrgId: orgId}
+	query := m.GetDataSourceByIdQuery{Id: id, OrgId: orgID}
 	if err := bus.Dispatch(&query); err != nil {
 		return nil, err
 	}
@@ -39,7 +39,7 @@ func (hs *HttpServer) ProxyDataSourceRequest(c *m.ReqContext) {
 
 	nocache := c.Req.Header.Get(HeaderNameNoBackendCache) == "true"
 
-	ds, err := hs.getDatasourceById(c.ParamsInt64(":id"), c.OrgId, nocache)
+	ds, err := hs.getDatasourceByID(c.ParamsInt64(":id"), c.OrgId, nocache)
 
 	if err != nil {
 		c.JsonApiErr(500, "Unable to load datasource meta data", err)

pkg/api/datasources.go

@@ -49,7 +49,7 @@ func GetDataSources(c *m.ReqContext) Response {
 	return Json(200, &result)
 }
 
-func GetDataSourceById(c *m.ReqContext) Response {
+func GetDataSourceByID(c *m.ReqContext) Response {
 	query := m.GetDataSourceByIdQuery{
 		Id:    c.ParamsInt64(":id"),
 		OrgId: c.OrgId,
@@ -68,14 +68,14 @@ func GetDataSourceById(c *m.ReqContext) Response {
 	return Json(200, &dtos)
 }
 
-func DeleteDataSourceById(c *m.ReqContext) Response {
+func DeleteDataSourceByID(c *m.ReqContext) Response {
 	id := c.ParamsInt64(":id")
 
 	if id <= 0 {
 		return ApiError(400, "Missing valid datasource id", nil)
 	}
 
-	ds, err := getRawDataSourceById(id, c.OrgId)
+	ds, err := getRawDataSourceByID(id, c.OrgId)
 	if err != nil {
 		return ApiError(400, "Failed to delete datasource", nil)
 	}
@@ -143,7 +143,7 @@ func UpdateDataSource(c *m.ReqContext, cmd m.UpdateDataSourceCommand) Response {
 	cmd.OrgId = c.OrgId
 	cmd.Id = c.ParamsInt64(":id")
 
-	err := fillWithSecureJsonData(&cmd)
+	err := fillWithSecureJSONData(&cmd)
 	if err != nil {
 		return ApiError(500, "Failed to update datasource", err)
 	}
@@ -152,9 +152,8 @@ func UpdateDataSource(c *m.ReqContext, cmd m.UpdateDataSourceCommand) Response {
 	if err != nil {
 		if err == m.ErrDataSourceUpdatingOldVersion {
 			return ApiError(500, "Failed to update datasource. Reload new version and try again", err)
-		} else {
-			return ApiError(500, "Failed to update datasource", err)
 		}
+		return ApiError(500, "Failed to update datasource", err)
 	}
 	ds := convertModelToDtos(cmd.Result)
 	return Json(200, util.DynMap{
@@ -165,12 +164,12 @@ func UpdateDataSource(c *m.ReqContext, cmd m.UpdateDataSourceCommand) Response {
 	})
 }
 
-func fillWithSecureJsonData(cmd *m.UpdateDataSourceCommand) error {
+func fillWithSecureJSONData(cmd *m.UpdateDataSourceCommand) error {
 	if len(cmd.SecureJsonData) == 0 {
 		return nil
 	}
 
-	ds, err := getRawDataSourceById(cmd.Id, cmd.OrgId)
+	ds, err := getRawDataSourceByID(cmd.Id, cmd.OrgId)
 	if err != nil {
 		return err
 	}
@@ -179,8 +178,8 @@ func fillWithSecureJsonData(cmd *m.UpdateDataSourceCommand) error {
 		return m.ErrDatasourceIsReadOnly
 	}
 
-	secureJsonData := ds.SecureJsonData.Decrypt()
-	for k, v := range secureJsonData {
+	secureJSONData := ds.SecureJsonData.Decrypt()
+	for k, v := range secureJSONData {
 
 		if _, ok := cmd.SecureJsonData[k]; !ok {
 			cmd.SecureJsonData[k] = v
@@ -190,10 +189,10 @@ func fillWithSecureJsonData(cmd *m.UpdateDataSourceCommand) error {
 	return nil
 }
 
-func getRawDataSourceById(id int64, orgId int64) (*m.DataSource, error) {
+func getRawDataSourceByID(id int64, orgID int64) (*m.DataSource, error) {
 	query := m.GetDataSourceByIdQuery{
 		Id:    id,
-		OrgId: orgId,
+		OrgId: orgID,
 	}
 
 	if err := bus.Dispatch(&query); err != nil {
@@ -220,7 +219,7 @@ func GetDataSourceByName(c *m.ReqContext) Response {
 }
 
 // Get /api/datasources/id/:name
-func GetDataSourceIdByName(c *m.ReqContext) Response {
+func GetDataSourceIDByName(c *m.ReqContext) Response {
 	query := m.GetDataSourceByNameQuery{Name: c.Params(":name"), OrgId: c.OrgId}
 
 	if err := bus.Dispatch(&query); err != nil {

pkg/api/folder.go

@@ -31,7 +31,7 @@ func GetFolders(c *m.ReqContext) Response {
 	return Json(200, result)
 }
 
-func GetFolderByUid(c *m.ReqContext) Response {
+func GetFolderByUID(c *m.ReqContext) Response {
 	s := dashboards.NewFolderService(c.OrgId, c.SignedInUser)
 	folder, err := s.GetFolderByUid(c.Params(":uid"))
 
@@ -43,7 +43,7 @@ func GetFolderByUid(c *m.ReqContext) Response {
 	return Json(200, toFolderDto(g, folder))
 }
 
-func GetFolderById(c *m.ReqContext) Response {
+func GetFolderByID(c *m.ReqContext) Response {
 	s := dashboards.NewFolderService(c.OrgId, c.SignedInUser)
 	folder, err := s.GetFolderById(c.ParamsInt64(":id"))
 	if err != nil {

pkg/api/folder_test.go

@@ -133,8 +133,8 @@ func TestFoldersApiEndpoint(t *testing.T) {
 	})
 }
 
-func callGetFolderByUid(sc *scenarioContext) {
-	sc.handlerFunc = GetFolderByUid
+func callGetFolderByUID(sc *scenarioContext) {
+	sc.handlerFunc = GetFolderByUID
 	sc.fakeReqWithParams("GET", sc.url, map[string]string{}).exec()
 }
 

pkg/api/http_server.go

@@ -39,7 +39,7 @@ type HttpServer struct {
 	httpSrv *http.Server
 }
 
-func NewHttpServer() *HttpServer {
+func NewHTTPServer() *HttpServer {
 	return &HttpServer{
 		log:   log.New("http.server"),
 		cache: gocache.New(5*time.Minute, 10*time.Minute),
@@ -175,7 +175,7 @@ func (hs *HttpServer) newMacaron() *macaron.Macaron {
 	m.Use(hs.healthHandler)
 	m.Use(hs.metricsEndpoint)
 	m.Use(middleware.GetContextHandler())
-	m.Use(middleware.Sessioner(&setting.SessionOptions))
+	m.Use(middleware.Sessioner(&setting.SessionOptions, setting.SessionConnMaxLifetime))
 	m.Use(middleware.OrgRedirect())
 
 	// needs to be after context handler

pkg/api/index.go

@@ -32,13 +32,13 @@ func setIndexViewData(c *m.ReqContext) (*dtos.IndexViewData, error) {
 		locale = parts[0]
 	}
 
-	appUrl := setting.AppUrl
-	appSubUrl := setting.AppSubUrl
+	appURL := setting.AppUrl
+	appSubURL := setting.AppSubUrl
 
 	// special case when doing localhost call from phantomjs
 	if c.IsRenderCall {
-		appUrl = fmt.Sprintf("%s://localhost:%s", setting.Protocol, setting.HttpPort)
-		appSubUrl = ""
+		appURL = fmt.Sprintf("%s://localhost:%s", setting.Protocol, setting.HttpPort)
+		appSubURL = ""
 		settings["appSubUrl"] = ""
 	}
 
@@ -62,8 +62,8 @@ func setIndexViewData(c *m.ReqContext) (*dtos.IndexViewData, error) {
 		},
 		Settings:                settings,
 		Theme:                   prefs.Theme,
-		AppUrl:                  appUrl,
-		AppSubUrl:               appSubUrl,
+		AppUrl:                  appURL,
+		AppSubUrl:               appSubURL,
 		GoogleAnalyticsId:       setting.GoogleAnalyticsId,
 		GoogleTagManagerId:      setting.GoogleTagManagerId,
 		BuildVersion:            setting.BuildVersion,
@@ -80,8 +80,8 @@ func setIndexViewData(c *m.ReqContext) (*dtos.IndexViewData, error) {
 		data.User.Name = data.User.Login
 	}
 
-	themeUrlParam := c.Query("theme")
-	if themeUrlParam == "light" {
+	themeURLParam := c.Query("theme")
+	if themeURLParam == "light" {
 		data.User.LightTheme = true
 		data.Theme = "light"
 	}
@@ -299,12 +299,12 @@ func setIndexViewData(c *m.ReqContext) (*dtos.IndexViewData, error) {
 }
 
 func Index(c *m.ReqContext) {
-	if data, err := setIndexViewData(c); err != nil {
+	data, err := setIndexViewData(c)
+	if err != nil {
 		c.Handle(500, "Failed to get settings", err)
 		return
-	} else {
-		c.HTML(200, "index", data)
 	}
+	c.HTML(200, "index", data)
 }
 
 func NotFoundHandler(c *m.ReqContext) {
@@ -313,10 +313,11 @@ func NotFoundHandler(c *m.ReqContext) {
 		return
 	}
 
-	if data, err := setIndexViewData(c); err != nil {
+	data, err := setIndexViewData(c)
+	if err != nil {
 		c.Handle(500, "Failed to get settings", err)
 		return
-	} else {
-		c.HTML(404, "index", data)
 	}
+
+	c.HTML(404, "index", data)
 }

pkg/api/login.go

@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	VIEW_INDEX = "index"
+	ViewIndex = "index"
 )
 
 func LoginView(c *m.ReqContext) {
@@ -40,7 +40,7 @@ func LoginView(c *m.ReqContext) {
 	}
 
 	if !tryLoginUsingRememberCookie(c) {
-		c.HTML(200, VIEW_INDEX, viewData)
+		c.HTML(200, ViewIndex, viewData)
 		return
 	}
 
@@ -87,7 +87,7 @@ func tryLoginUsingRememberCookie(c *m.ReqContext) bool {
 	return true
 }
 
-func LoginApiPing(c *m.ReqContext) {
+func LoginAPIPing(c *m.ReqContext) {
 	if !tryLoginUsingRememberCookie(c) {
 		c.JsonApiErr(401, "Unauthorized", nil)
 		return

pkg/api/metrics.go

@@ -20,12 +20,12 @@ func QueryMetrics(c *m.ReqContext, reqDto dtos.MetricRequest) Response {
 		return ApiError(400, "No queries found in query", nil)
 	}
 
-	dsId, err := reqDto.Queries[0].Get("datasourceId").Int64()
+	dsID, err := reqDto.Queries[0].Get("datasourceId").Int64()
 	if err != nil {
 		return ApiError(400, "Query missing datasourceId", nil)
 	}
 
-	dsQuery := m.GetDataSourceByIdQuery{Id: dsId, OrgId: c.OrgId}
+	dsQuery := m.GetDataSourceByIdQuery{Id: dsID, OrgId: c.OrgId}
 	if err := bus.Dispatch(&dsQuery); err != nil {
 		return ApiError(500, "failed to fetch data source", err)
 	}
@@ -82,7 +82,7 @@ func GenerateError(c *m.ReqContext) Response {
 }
 
 // GET /api/tsdb/testdata/gensql
-func GenerateSqlTestData(c *m.ReqContext) Response {
+func GenerateSQLTestData(c *m.ReqContext) Response {
 	if err := bus.Dispatch(&m.InsertSqlTestDataCommand{}); err != nil {
 		return ApiError(500, "Failed to insert test data", err)
 	}

pkg/api/org.go

@@ -15,7 +15,7 @@ func GetOrgCurrent(c *m.ReqContext) Response {
 }
 
 // GET /api/orgs/:orgId
-func GetOrgById(c *m.ReqContext) Response {
+func GetOrgByID(c *m.ReqContext) Response {
 	return getOrgHelper(c.ParamsInt64(":orgId"))
 }
 
@@ -106,8 +106,8 @@ func UpdateOrg(c *m.ReqContext, form dtos.UpdateOrgForm) Response {
 	return updateOrgHelper(form, c.ParamsInt64(":orgId"))
 }
 
-func updateOrgHelper(form dtos.UpdateOrgForm, orgId int64) Response {
-	cmd := m.UpdateOrgCommand{Name: form.Name, OrgId: orgId}
+func updateOrgHelper(form dtos.UpdateOrgForm, orgID int64) Response {
+	cmd := m.UpdateOrgCommand{Name: form.Name, OrgId: orgID}
 	if err := bus.Dispatch(&cmd); err != nil {
 		if err == m.ErrOrgNameTaken {
 			return ApiError(400, "Organization name taken", err)
@@ -128,9 +128,9 @@ func UpdateOrgAddress(c *m.ReqContext, form dtos.UpdateOrgAddressForm) Response
 	return updateOrgAddressHelper(form, c.ParamsInt64(":orgId"))
 }
 
-func updateOrgAddressHelper(form dtos.UpdateOrgAddressForm, orgId int64) Response {
+func updateOrgAddressHelper(form dtos.UpdateOrgAddressForm, orgID int64) Response {
 	cmd := m.UpdateOrgAddressCommand{
-		OrgId: orgId,
+		OrgId: orgID,
 		Address: m.Address{
 			Address1: form.Address1,
 			Address2: form.Address2,
@@ -149,7 +149,7 @@ func updateOrgAddressHelper(form dtos.UpdateOrgAddressForm, orgId int64) Respons
 }
 
 // GET /api/orgs/:orgId
-func DeleteOrgById(c *m.ReqContext) Response {
+func DeleteOrgByID(c *m.ReqContext) Response {
 	if err := bus.Dispatch(&m.DeleteOrgCommand{Id: c.ParamsInt64(":orgId")}); err != nil {
 		if err == m.ErrOrgNotFound {
 			return ApiError(404, "Failed to delete organization. ID not found", nil)

pkg/api/org_invite.go

@@ -96,26 +96,25 @@ func inviteExistingUserToOrg(c *m.ReqContext, user *m.User, inviteDto *dtos.AddI
 			return ApiError(412, fmt.Sprintf("User %s is already added to organization", inviteDto.LoginOrEmail), err)
 		}
 		return ApiError(500, "Error while trying to create org user", err)
-	} else {
+	}
 
-		if inviteDto.SendEmail && util.IsEmail(user.Email) {
-			emailCmd := m.SendEmailCommand{
-				To:       []string{user.Email},
-				Template: "invited_to_org.html",
-				Data: map[string]interface{}{
-					"Name":      user.NameOrFallback(),
-					"OrgName":   c.OrgName,
-					"InvitedBy": util.StringsFallback3(c.Name, c.Email, c.Login),
-				},
-			}
-
-			if err := bus.Dispatch(&emailCmd); err != nil {
-				return ApiError(500, "Failed to send email invited_to_org", err)
-			}
+	if inviteDto.SendEmail && util.IsEmail(user.Email) {
+		emailCmd := m.SendEmailCommand{
+			To:       []string{user.Email},
+			Template: "invited_to_org.html",
+			Data: map[string]interface{}{
+				"Name":      user.NameOrFallback(),
+				"OrgName":   c.OrgName,
+				"InvitedBy": util.StringsFallback3(c.Name, c.Email, c.Login),
+			},
 		}
 
-		return ApiSuccess(fmt.Sprintf("Existing Grafana user %s added to org %s", user.NameOrFallback(), c.OrgName))
+		if err := bus.Dispatch(&emailCmd); err != nil {
+			return ApiError(500, "Failed to send email invited_to_org", err)
+		}
 	}
+
+	return ApiSuccess(fmt.Sprintf("Existing Grafana user %s added to org %s", user.NameOrFallback(), c.OrgName))
 }
 
 func RevokeInvite(c *m.ReqContext) Response {

pkg/api/org_users.go

@@ -53,9 +53,9 @@ func GetOrgUsers(c *m.ReqContext) Response {
 	return getOrgUsersHelper(c.ParamsInt64(":orgId"), "", 0)
 }
 
-func getOrgUsersHelper(orgId int64, query string, limit int) Response {
+func getOrgUsersHelper(orgID int64, query string, limit int) Response {
 	q := m.GetOrgUsersQuery{
-		OrgId: orgId,
+		OrgId: orgID,
 		Query: query,
 		Limit: limit,
 	}
@@ -102,19 +102,19 @@ func updateOrgUserHelper(cmd m.UpdateOrgUserCommand) Response {
 
 // DELETE /api/org/users/:userId
 func RemoveOrgUserForCurrentOrg(c *m.ReqContext) Response {
-	userId := c.ParamsInt64(":userId")
-	return removeOrgUserHelper(c.OrgId, userId)
+	userID := c.ParamsInt64(":userId")
+	return removeOrgUserHelper(c.OrgId, userID)
 }
 
 // DELETE /api/orgs/:orgId/users/:userId
 func RemoveOrgUser(c *m.ReqContext) Response {
-	userId := c.ParamsInt64(":userId")
-	orgId := c.ParamsInt64(":orgId")
-	return removeOrgUserHelper(orgId, userId)
+	userID := c.ParamsInt64(":userId")
+	orgID := c.ParamsInt64(":orgId")
+	return removeOrgUserHelper(orgID, userID)
 }
 
-func removeOrgUserHelper(orgId int64, userId int64) Response {
-	cmd := m.RemoveOrgUserCommand{OrgId: orgId, UserId: userId}
+func removeOrgUserHelper(orgID int64, userID int64) Response {
+	cmd := m.RemoveOrgUserCommand{OrgId: orgID, UserId: userID}
 
 	if err := bus.Dispatch(&cmd); err != nil {
 		if err == m.ErrLastOrgAdmin {

pkg/api/playlist.go

@@ -127,9 +127,9 @@ func GetPlaylistItems(c *m.ReqContext) Response {
 }
 
 func GetPlaylistDashboards(c *m.ReqContext) Response {
-	playlistId := c.ParamsInt64(":id")
+	playlistID := c.ParamsInt64(":id")
 
-	playlists, err := LoadPlaylistDashboards(c.OrgId, c.SignedInUser, playlistId)
+	playlists, err := LoadPlaylistDashboards(c.OrgId, c.SignedInUser, playlistID)
 	if err != nil {
 		return ApiError(500, "Could not load dashboards", err)
 	}

pkg/api/playlist_play.go

@@ -34,29 +34,27 @@ func populateDashboardsById(dashboardByIds []int64, dashboardIdOrder map[int64]i
 	return result, nil
 }
 
-func populateDashboardsByTag(orgId int64, signedInUser *m.SignedInUser, dashboardByTag []string, dashboardTagOrder map[string]int) dtos.PlaylistDashboardsSlice {
+func populateDashboardsByTag(orgID int64, signedInUser *m.SignedInUser, dashboardByTag []string, dashboardTagOrder map[string]int) dtos.PlaylistDashboardsSlice {
 	result := make(dtos.PlaylistDashboardsSlice, 0)
 
-	if len(dashboardByTag) > 0 {
-		for _, tag := range dashboardByTag {
-			searchQuery := search.Query{
-				Title:        "",
-				Tags:         []string{tag},
-				SignedInUser: signedInUser,
-				Limit:        100,
-				IsStarred:    false,
-				OrgId:        orgId,
-			}
+	for _, tag := range dashboardByTag {
+		searchQuery := search.Query{
+			Title:        "",
+			Tags:         []string{tag},
+			SignedInUser: signedInUser,
+			Limit:        100,
+			IsStarred:    false,
+			OrgId:        orgID,
+		}
 
-			if err := bus.Dispatch(&searchQuery); err == nil {
-				for _, item := range searchQuery.Result {
-					result = append(result, dtos.PlaylistDashboard{
-						Id:    item.Id,
-						Title: item.Title,
-						Uri:   item.Uri,
-						Order: dashboardTagOrder[tag],
-					})
-				}
+		if err := bus.Dispatch(&searchQuery); err == nil {
+			for _, item := range searchQuery.Result {
+				result = append(result, dtos.PlaylistDashboard{
+					Id:    item.Id,
+					Title: item.Title,
+					Uri:   item.Uri,
+					Order: dashboardTagOrder[tag],
+				})
 			}
 		}
 	}
@@ -64,19 +62,19 @@ func populateDashboardsByTag(orgId int64, signedInUser *m.SignedInUser, dashboar
 	return result
 }
 
-func LoadPlaylistDashboards(orgId int64, signedInUser *m.SignedInUser, playlistId int64) (dtos.PlaylistDashboardsSlice, error) {
-	playlistItems, _ := LoadPlaylistItems(playlistId)
+func LoadPlaylistDashboards(orgID int64, signedInUser *m.SignedInUser, playlistID int64) (dtos.PlaylistDashboardsSlice, error) {
+	playlistItems, _ := LoadPlaylistItems(playlistID)
 
-	dashboardByIds := make([]int64, 0)
+	dashboardByIDs := make([]int64, 0)
 	dashboardByTag := make([]string, 0)
-	dashboardIdOrder := make(map[int64]int)
+	dashboardIDOrder := make(map[int64]int)
 	dashboardTagOrder := make(map[string]int)
 
 	for _, i := range playlistItems {
 		if i.Type == "dashboard_by_id" {
-			dashboardId, _ := strconv.ParseInt(i.Value, 10, 64)
-			dashboardByIds = append(dashboardByIds, dashboardId)
-			dashboardIdOrder[dashboardId] = i.Order
+			dashboardID, _ := strconv.ParseInt(i.Value, 10, 64)
+			dashboardByIDs = append(dashboardByIDs, dashboardID)
+			dashboardIDOrder[dashboardID] = i.Order
 		}
 
 		if i.Type == "dashboard_by_tag" {
@@ -87,9 +85,9 @@ func LoadPlaylistDashboards(orgId int64, signedInUser *m.SignedInUser, playlistI
 
 	result := make(dtos.PlaylistDashboardsSlice, 0)
 
-	var k, _ = populateDashboardsById(dashboardByIds, dashboardIdOrder)
+	var k, _ = populateDashboardsById(dashboardByIDs, dashboardIDOrder)
 	result = append(result, k...)
-	result = append(result, populateDashboardsByTag(orgId, signedInUser, dashboardByTag, dashboardTagOrder)...)
+	result = append(result, populateDashboardsByTag(orgID, signedInUser, dashboardByTag, dashboardTagOrder)...)
 
 	sort.Sort(result)
 	return result, nil

pkg/api/plugins.go

@@ -78,48 +78,48 @@ func GetPluginList(c *m.ReqContext) Response {
 	return Json(200, result)
 }
 
-func GetPluginSettingById(c *m.ReqContext) Response {
-	pluginId := c.Params(":pluginId")
+func GetPluginSettingByID(c *m.ReqContext) Response {
+	pluginID := c.Params(":pluginId")
 
-	if def, exists := plugins.Plugins[pluginId]; !exists {
+	def, exists := plugins.Plugins[pluginID]
+	if !exists {
 		return ApiError(404, "Plugin not found, no installed plugin with that id", nil)
-	} else {
+	}
 
-		dto := &dtos.PluginSetting{
-			Type:          def.Type,
-			Id:            def.Id,
-			Name:          def.Name,
-			Info:          &def.Info,
-			Dependencies:  &def.Dependencies,
-			Includes:      def.Includes,
-			BaseUrl:       def.BaseUrl,
-			Module:        def.Module,
-			DefaultNavUrl: def.DefaultNavUrl,
-			LatestVersion: def.GrafanaNetVersion,
-			HasUpdate:     def.GrafanaNetHasUpdate,
-			State:         def.State,
-		}
+	dto := &dtos.PluginSetting{
+		Type:          def.Type,
+		Id:            def.Id,
+		Name:          def.Name,
+		Info:          &def.Info,
+		Dependencies:  &def.Dependencies,
+		Includes:      def.Includes,
+		BaseUrl:       def.BaseUrl,
+		Module:        def.Module,
+		DefaultNavUrl: def.DefaultNavUrl,
+		LatestVersion: def.GrafanaNetVersion,
+		HasUpdate:     def.GrafanaNetHasUpdate,
+		State:         def.State,
+	}
 
-		query := m.GetPluginSettingByIdQuery{PluginId: pluginId, OrgId: c.OrgId}
-		if err := bus.Dispatch(&query); err != nil {
-			if err != m.ErrPluginSettingNotFound {
-				return ApiError(500, "Failed to get login settings", nil)
-			}
-		} else {
-			dto.Enabled = query.Result.Enabled
-			dto.Pinned = query.Result.Pinned
-			dto.JsonData = query.Result.JsonData
+	query := m.GetPluginSettingByIdQuery{PluginId: pluginID, OrgId: c.OrgId}
+	if err := bus.Dispatch(&query); err != nil {
+		if err != m.ErrPluginSettingNotFound {
+			return ApiError(500, "Failed to get login settings", nil)
 		}
-
-		return Json(200, dto)
+	} else {
+		dto.Enabled = query.Result.Enabled
+		dto.Pinned = query.Result.Pinned
+		dto.JsonData = query.Result.JsonData
 	}
+
+	return Json(200, dto)
 }
 
 func UpdatePluginSetting(c *m.ReqContext, cmd m.UpdatePluginSettingCmd) Response {
-	pluginId := c.Params(":pluginId")
+	pluginID := c.Params(":pluginId")
 
 	cmd.OrgId = c.OrgId
-	cmd.PluginId = pluginId
+	cmd.PluginId = pluginID
 
 	if _, ok := plugins.Apps[cmd.PluginId]; !ok {
 		return ApiError(404, "Plugin not installed.", nil)
@@ -133,34 +133,36 @@ func UpdatePluginSetting(c *m.ReqContext, cmd m.UpdatePluginSettingCmd) Response
 }
 
 func GetPluginDashboards(c *m.ReqContext) Response {
-	pluginId := c.Params(":pluginId")
+	pluginID := c.Params(":pluginId")
 
-	if list, err := plugins.GetPluginDashboards(c.OrgId, pluginId); err != nil {
+	list, err := plugins.GetPluginDashboards(c.OrgId, pluginID)
+	if err != nil {
 		if notfound, ok := err.(plugins.PluginNotFoundError); ok {
 			return ApiError(404, notfound.Error(), nil)
 		}
 
 		return ApiError(500, "Failed to get plugin dashboards", err)
-	} else {
-		return Json(200, list)
 	}
+
+	return Json(200, list)
 }
 
 func GetPluginMarkdown(c *m.ReqContext) Response {
-	pluginId := c.Params(":pluginId")
+	pluginID := c.Params(":pluginId")
 	name := c.Params(":name")
 
-	if content, err := plugins.GetPluginMarkdown(pluginId, name); err != nil {
+	content, err := plugins.GetPluginMarkdown(pluginID, name)
+	if err != nil {
 		if notfound, ok := err.(plugins.PluginNotFoundError); ok {
 			return ApiError(404, notfound.Error(), nil)
 		}
 
 		return ApiError(500, "Could not get markdown file", err)
-	} else {
-		resp := Respond(200, content)
-		resp.Header("Content-Type", "text/plain; charset=utf-8")
-		return resp
 	}
+
+	resp := Respond(200, content)
+	resp.Header("Content-Type", "text/plain; charset=utf-8")
+	return resp
 }
 
 func ImportDashboard(c *m.ReqContext, apiCmd dtos.ImportDashboardCommand) Response {

pkg/api/preferences.go

@@ -24,8 +24,8 @@ func GetUserPreferences(c *m.ReqContext) Response {
 	return getPreferencesFor(c.OrgId, c.UserId)
 }
 
-func getPreferencesFor(orgId int64, userId int64) Response {
-	prefsQuery := m.GetPreferencesQuery{UserId: userId, OrgId: orgId}
+func getPreferencesFor(orgID int64, userID int64) Response {
+	prefsQuery := m.GetPreferencesQuery{UserId: userID, OrgId: orgID}
 
 	if err := bus.Dispatch(&prefsQuery); err != nil {
 		return ApiError(500, "Failed to get preferences", err)
@@ -45,10 +45,10 @@ func UpdateUserPreferences(c *m.ReqContext, dtoCmd dtos.UpdatePrefsCmd) Response
 	return updatePreferencesFor(c.OrgId, c.UserId, &dtoCmd)
 }
 
-func updatePreferencesFor(orgId int64, userId int64, dtoCmd *dtos.UpdatePrefsCmd) Response {
+func updatePreferencesFor(orgID int64, userID int64, dtoCmd *dtos.UpdatePrefsCmd) Response {
 	saveCmd := m.SavePreferencesCommand{
-		UserId:          userId,
-		OrgId:           orgId,
+		UserId:          userID,
+		OrgId:           orgID,
 		Theme:           dtoCmd.Theme,
 		Timezone:        dtoCmd.Timezone,
 		HomeDashboardId: dtoCmd.HomeDashboardId,

pkg/api/search.go

@@ -25,19 +25,19 @@ func Search(c *m.ReqContext) {
 		permission = m.PERMISSION_EDIT
 	}
 
-	dbids := make([]int64, 0)
+	dbIDs := make([]int64, 0)
 	for _, id := range c.QueryStrings("dashboardIds") {
-		dashboardId, err := strconv.ParseInt(id, 10, 64)
+		dashboardID, err := strconv.ParseInt(id, 10, 64)
 		if err == nil {
-			dbids = append(dbids, dashboardId)
+			dbIDs = append(dbIDs, dashboardID)
 		}
 	}
 
-	folderIds := make([]int64, 0)
+	folderIDs := make([]int64, 0)
 	for _, id := range c.QueryStrings("folderIds") {
-		folderId, err := strconv.ParseInt(id, 10, 64)
+		folderID, err := strconv.ParseInt(id, 10, 64)
 		if err == nil {
-			folderIds = append(folderIds, folderId)
+			folderIDs = append(folderIDs, folderID)
 		}
 	}
 
@@ -48,9 +48,9 @@ func Search(c *m.ReqContext) {
 		Limit:        limit,
 		IsStarred:    starred == "true",
 		OrgId:        c.OrgId,
-		DashboardIds: dbids,
+		DashboardIds: dbIDs,
 		Type:         dashboardType,
-		FolderIds:    folderIds,
+		FolderIds:    folderIDs,
 		Permission:   permission,
 	}
 

pkg/api/team.go

@@ -38,7 +38,7 @@ func UpdateTeam(c *m.ReqContext, cmd m.UpdateTeamCommand) Response {
 }
 
 // DELETE /api/teams/:teamId
-func DeleteTeamById(c *m.ReqContext) Response {
+func DeleteTeamByID(c *m.ReqContext) Response {
 	if err := bus.Dispatch(&m.DeleteTeamCommand{OrgId: c.OrgId, Id: c.ParamsInt64(":teamId")}); err != nil {
 		if err == m.ErrTeamNotFound {
 			return ApiError(404, "Failed to delete Team. ID not found", nil)
@@ -82,7 +82,7 @@ func SearchTeams(c *m.ReqContext) Response {
 }
 
 // GET /api/teams/:teamId
-func GetTeamById(c *m.ReqContext) Response {
+func GetTeamByID(c *m.ReqContext) Response {
 	query := m.GetTeamByIdQuery{OrgId: c.OrgId, Id: c.ParamsInt64(":teamId")}
 
 	if err := bus.Dispatch(&query); err != nil {

pkg/api/user.go

@@ -14,12 +14,12 @@ func GetSignedInUser(c *m.ReqContext) Response {
 }
 
 // GET /api/users/:id
-func GetUserById(c *m.ReqContext) Response {
+func GetUserByID(c *m.ReqContext) Response {
 	return getUserUserProfile(c.ParamsInt64(":id"))
 }
 
-func getUserUserProfile(userId int64) Response {
-	query := m.GetUserProfileQuery{UserId: userId}
+func getUserUserProfile(userID int64) Response {
+	query := m.GetUserProfileQuery{UserId: userID}
 
 	if err := bus.Dispatch(&query); err != nil {
 		if err == m.ErrUserNotFound {
@@ -75,14 +75,14 @@ func UpdateUser(c *m.ReqContext, cmd m.UpdateUserCommand) Response {
 
 //POST /api/users/:id/using/:orgId
 func UpdateUserActiveOrg(c *m.ReqContext) Response {
-	userId := c.ParamsInt64(":id")
-	orgId := c.ParamsInt64(":orgId")
+	userID := c.ParamsInt64(":id")
+	orgID := c.ParamsInt64(":orgId")
 
-	if !validateUsingOrg(userId, orgId) {
+	if !validateUsingOrg(userID, orgID) {
 		return ApiError(401, "Not a valid organization", nil)
 	}
 
-	cmd := m.SetUsingOrgCommand{UserId: userId, OrgId: orgId}
+	cmd := m.SetUsingOrgCommand{UserId: userID, OrgId: orgID}
 
 	if err := bus.Dispatch(&cmd); err != nil {
 		return ApiError(500, "Failed to change active organization", err)
@@ -116,8 +116,8 @@ func GetUserOrgList(c *m.ReqContext) Response {
 	return getUserOrgList(c.ParamsInt64(":id"))
 }
 
-func getUserOrgList(userId int64) Response {
-	query := m.GetUserOrgListQuery{UserId: userId}
+func getUserOrgList(userID int64) Response {
+	query := m.GetUserOrgListQuery{UserId: userID}
 
 	if err := bus.Dispatch(&query); err != nil {
 		return ApiError(500, "Failed to get user organizations", err)
@@ -126,8 +126,8 @@ func getUserOrgList(userId int64) Response {
 	return Json(200, query.Result)
 }
 
-func validateUsingOrg(userId int64, orgId int64) bool {
-	query := m.GetUserOrgListQuery{UserId: userId}
+func validateUsingOrg(userID int64, orgID int64) bool {
+	query := m.GetUserOrgListQuery{UserId: userID}
 
 	if err := bus.Dispatch(&query); err != nil {
 		return false
@@ -136,7 +136,7 @@ func validateUsingOrg(userId int64, orgId int64) bool {
 	// validate that the org id in the list
 	valid := false
 	for _, other := range query.Result {
-		if other.OrgId == orgId {
+		if other.OrgId == orgID {
 			valid = true
 		}
 	}
@@ -146,13 +146,13 @@ func validateUsingOrg(userId int64, orgId int64) bool {
 
 // POST /api/user/using/:id
 func UserSetUsingOrg(c *m.ReqContext) Response {
-	orgId := c.ParamsInt64(":id")
+	orgID := c.ParamsInt64(":id")
 
-	if !validateUsingOrg(c.UserId, orgId) {
+	if !validateUsingOrg(c.UserId, orgID) {
 		return ApiError(401, "Not a valid organization", nil)
 	}
 
-	cmd := m.SetUsingOrgCommand{UserId: c.UserId, OrgId: orgId}
+	cmd := m.SetUsingOrgCommand{UserId: c.UserId, OrgId: orgID}
 
 	if err := bus.Dispatch(&cmd); err != nil {
 		return ApiError(500, "Failed to change active organization", err)
@@ -163,13 +163,13 @@ func UserSetUsingOrg(c *m.ReqContext) Response {
 
 // GET /profile/switch-org/:id
 func ChangeActiveOrgAndRedirectToHome(c *m.ReqContext) {
-	orgId := c.ParamsInt64(":id")
+	orgID := c.ParamsInt64(":id")
 
-	if !validateUsingOrg(c.UserId, orgId) {
+	if !validateUsingOrg(c.UserId, orgID) {
 		NotFoundHandler(c)
 	}
 
-	cmd := m.SetUsingOrgCommand{UserId: c.UserId, OrgId: orgId}
+	cmd := m.SetUsingOrgCommand{UserId: c.UserId, OrgId: orgID}
 
 	if err := bus.Dispatch(&cmd); err != nil {
 		NotFoundHandler(c)

pkg/cmd/grafana-server/server.go

@@ -120,7 +120,7 @@ func (g *GrafanaServerImpl) initLogging() {
 }
 
 func (g *GrafanaServerImpl) startHttpServer() error {
-	g.httpServer = api.NewHttpServer()
+	g.httpServer = api.NewHTTPServer()
 
 	err := g.httpServer.Start(g.context)
 

pkg/middleware/auth.go

@@ -17,10 +17,10 @@ type AuthOptions struct {
 }
 
 func getRequestUserId(c *m.ReqContext) int64 {
-	userId := c.Session.Get(session.SESS_KEY_USERID)
+	userID := c.Session.Get(session.SESS_KEY_USERID)
 
-	if userId != nil {
-		return userId.(int64)
+	if userID != nil {
+		return userID.(int64)
 	}
 
 	return 0

pkg/middleware/dashboard_redirect.go

@@ -20,7 +20,7 @@ func getDashboardUrlBySlug(orgId int64, slug string) (string, error) {
 	return m.GetDashboardUrl(query.Result.Uid, query.Result.Slug), nil
 }
 
-func RedirectFromLegacyDashboardUrl() macaron.Handler {
+func RedirectFromLegacyDashboardURL() macaron.Handler {
 	return func(c *m.ReqContext) {
 		slug := c.Params("slug")
 

pkg/middleware/dashboard_redirect_test.go

@@ -13,7 +13,7 @@ import (
 func TestMiddlewareDashboardRedirect(t *testing.T) {
 	Convey("Given the dashboard redirect middleware", t, func() {
 		bus.ClearBusHandlers()
-		redirectFromLegacyDashboardUrl := RedirectFromLegacyDashboardUrl()
+		redirectFromLegacyDashboardUrl := RedirectFromLegacyDashboardURL()
 		redirectFromLegacyDashboardSoloUrl := RedirectFromLegacyDashboardSoloUrl()
 
 		fakeDash := m.NewDashboard("Child dash")
@@ -34,9 +34,9 @@ func TestMiddlewareDashboardRedirect(t *testing.T) {
 
 			Convey("Should redirect to new dashboard url with a 301 Moved Permanently", func() {
 				So(sc.resp.Code, ShouldEqual, 301)
-				redirectUrl, _ := sc.resp.Result().Location()
-				So(redirectUrl.Path, ShouldEqual, m.GetDashboardUrl(fakeDash.Uid, fakeDash.Slug))
-				So(len(redirectUrl.Query()), ShouldEqual, 2)
+				redirectURL, _ := sc.resp.Result().Location()
+				So(redirectURL.Path, ShouldEqual, m.GetDashboardUrl(fakeDash.Uid, fakeDash.Slug))
+				So(len(redirectURL.Query()), ShouldEqual, 2)
 			})
 		})
 
@@ -47,11 +47,11 @@ func TestMiddlewareDashboardRedirect(t *testing.T) {
 
 			Convey("Should redirect to new dashboard url with a 301 Moved Permanently", func() {
 				So(sc.resp.Code, ShouldEqual, 301)
-				redirectUrl, _ := sc.resp.Result().Location()
-				expectedUrl := m.GetDashboardUrl(fakeDash.Uid, fakeDash.Slug)
-				expectedUrl = strings.Replace(expectedUrl, "/d/", "/d-solo/", 1)
-				So(redirectUrl.Path, ShouldEqual, expectedUrl)
-				So(len(redirectUrl.Query()), ShouldEqual, 2)
+				redirectURL, _ := sc.resp.Result().Location()
+				expectedURL := m.GetDashboardUrl(fakeDash.Uid, fakeDash.Slug)
+				expectedURL = strings.Replace(expectedURL, "/d/", "/d-solo/", 1)
+				So(redirectURL.Path, ShouldEqual, expectedURL)
+				So(len(redirectURL.Query()), ShouldEqual, 2)
 			})
 		})
 	})

pkg/middleware/middleware_test.go

@@ -338,7 +338,7 @@ func middlewareScenario(desc string, fn scenarioFunc) {
 		sc.m.Use(GetContextHandler())
 		// mock out gc goroutine
 		session.StartSessionGC = func() {}
-		sc.m.Use(Sessioner(&ms.Options{}))
+		sc.m.Use(Sessioner(&ms.Options{}, 0))
 		sc.m.Use(OrgRedirect())
 		sc.m.Use(AddDefaultResponseHeaders())
 

pkg/middleware/recovery_test.go

@@ -14,10 +14,10 @@ import (
 
 func TestRecoveryMiddleware(t *testing.T) {
 	Convey("Given an api route that panics", t, func() {
-		apiUrl := "/api/whatever"
-		recoveryScenario("recovery middleware should return json", apiUrl, func(sc *scenarioContext) {
+		apiURL := "/api/whatever"
+		recoveryScenario("recovery middleware should return json", apiURL, func(sc *scenarioContext) {
 			sc.handlerFunc = PanicHandler
-			sc.fakeReq("GET", apiUrl).exec()
+			sc.fakeReq("GET", apiURL).exec()
 			sc.req.Header.Add("content-type", "application/json")
 
 			So(sc.resp.Code, ShouldEqual, 500)
@@ -27,10 +27,10 @@ func TestRecoveryMiddleware(t *testing.T) {
 	})
 
 	Convey("Given a non-api route that panics", t, func() {
-		apiUrl := "/whatever"
-		recoveryScenario("recovery middleware should return html", apiUrl, func(sc *scenarioContext) {
+		apiURL := "/whatever"
+		recoveryScenario("recovery middleware should return html", apiURL, func(sc *scenarioContext) {
 			sc.handlerFunc = PanicHandler
-			sc.fakeReq("GET", apiUrl).exec()
+			sc.fakeReq("GET", apiURL).exec()
 
 			So(sc.resp.Code, ShouldEqual, 500)
 			So(sc.resp.Header().Get("content-type"), ShouldEqual, "text/html; charset=UTF-8")
@@ -63,7 +63,7 @@ func recoveryScenario(desc string, url string, fn scenarioFunc) {
 		sc.m.Use(GetContextHandler())
 		// mock out gc goroutine
 		session.StartSessionGC = func() {}
-		sc.m.Use(Sessioner(&ms.Options{}))
+		sc.m.Use(Sessioner(&ms.Options{}, 0))
 		sc.m.Use(OrgRedirect())
 		sc.m.Use(AddDefaultResponseHeaders())
 

pkg/middleware/session.go

@@ -8,8 +8,8 @@ import (
 	"github.com/grafana/grafana/pkg/services/session"
 )
 
-func Sessioner(options *ms.Options) macaron.Handler {
-	session.Init(options)
+func Sessioner(options *ms.Options, sessionConnMaxLifetime int64) macaron.Handler {
+	session.Init(options, sessionConnMaxLifetime)
 
 	return func(ctx *m.ReqContext) {
 		ctx.Next()

vendor/github.com/go-macaron/session/mysql/mysql.go → pkg/services/session/mysql.go

@@ -108,6 +108,7 @@ func (p *MysqlProvider) Init(expire int64, connStr string) (err error) {
 	p.expire = expire
 
 	p.c, err = sql.Open("mysql", connStr)
+	p.c.SetConnMaxLifetime(time.Second * time.Duration(sessionConnMaxLifetime))
 	if err != nil {
 		return err
 	}
@@ -141,12 +142,29 @@ func (p *MysqlProvider) Read(sid string) (session.RawStore, error) {
 
 // Exist returns true if session with given ID exists.
 func (p *MysqlProvider) Exist(sid string) bool {
+	exists, err := p.queryExists(sid)
+
+	if err != nil {
+		exists, err = p.queryExists(sid)
+	}
+
+	if err != nil {
+		log.Printf("session/mysql: error checking if session exists: %v", err)
+		return false
+	}
+
+	return exists
+}
+
+func (p *MysqlProvider) queryExists(sid string) (bool, error) {
 	var data []byte
 	err := p.c.QueryRow("SELECT data FROM session WHERE `key`=?", sid).Scan(&data)
+
 	if err != nil && err != sql.ErrNoRows {
-		panic("session/mysql: error checking existence: " + err.Error())
+		return false, err
 	}
-	return err != sql.ErrNoRows
+
+	return err != sql.ErrNoRows, nil
 }
 
 // Destory deletes a session by session ID.
@@ -185,7 +203,12 @@ func (p *MysqlProvider) Count() (total int) {
 
 // GC calls GC to clean expired sessions.
 func (p *MysqlProvider) GC() {
-	if _, err := p.c.Exec("DELETE FROM session WHERE  expiry + ? <= UNIX_TIMESTAMP(NOW())", p.expire); err != nil {
+	var err error
+	if _, err = p.c.Exec("DELETE FROM session WHERE  expiry + ? <= UNIX_TIMESTAMP(NOW())", p.expire); err != nil {
+		_, err = p.c.Exec("DELETE FROM session WHERE  expiry + ? <= UNIX_TIMESTAMP(NOW())", p.expire)
+	}
+
+	if err != nil {
 		log.Printf("session/mysql: error garbage collecting: %v", err)
 	}
 }

pkg/services/session/session.go

@@ -6,7 +6,6 @@ import (
 
 	ms "github.com/go-macaron/session"
 	_ "github.com/go-macaron/session/memcache"
-	_ "github.com/go-macaron/session/mysql"
 	_ "github.com/go-macaron/session/postgres"
 	_ "github.com/go-macaron/session/redis"
 	"github.com/grafana/grafana/pkg/log"
@@ -25,6 +24,7 @@ var sessionOptions *ms.Options
 var StartSessionGC func()
 var GetSessionCount func() int
 var sessionLogger = log.New("session")
+var sessionConnMaxLifetime int64
 
 func init() {
 	StartSessionGC = func() {
@@ -37,9 +37,10 @@ func init() {
 	}
 }
 
-func Init(options *ms.Options) {
+func Init(options *ms.Options, connMaxLifetime int64) {
 	var err error
 	sessionOptions = prepareOptions(options)
+	sessionConnMaxLifetime = connMaxLifetime
 	sessionManager, err = ms.NewManager(options.Provider, *options)
 	if err != nil {
 		panic(err)

pkg/services/sqlstore/alert.go

@@ -255,7 +255,7 @@ func SetAlertState(cmd *m.SetAlertStateCommand) error {
 		}
 
 		alert.State = cmd.State
-		alert.StateChanges += 1
+		alert.StateChanges++
 		alert.NewStateDate = timeNow()
 		alert.EvalData = cmd.EvalData
 

pkg/services/sqlstore/dashboard_folder_test.go

@@ -46,6 +46,7 @@ func TestDashboardFolderDataAccess(t *testing.T) {
 						OrgId:        1, DashboardIds: []int64{folder.Id, dashInRoot.Id},
 					}
 					err := SearchDashboards(query)
+
 					So(err, ShouldBeNil)
 					So(len(query.Result), ShouldEqual, 1)
 					So(query.Result[0].Id, ShouldEqual, dashInRoot.Id)

pkg/services/sqlstore/migrator/migrator.go

@@ -125,7 +125,7 @@ func (mg *Migrator) exec(m Migration, sess *xorm.Session) error {
 	condition := m.GetCondition()
 	if condition != nil {
 		sql, args := condition.Sql(mg.dialect)
-		results, err := sess.Query(sql, args...)
+		results, err := sess.SQL(sql).Query(args...)
 		if err != nil || len(results) == 0 {
 			mg.Logger.Info("Skipping migration condition not fulfilled", "id", m.Id())
 			return sess.Rollback()

pkg/services/sqlstore/org_test.go

@@ -2,6 +2,7 @@ package sqlstore
 
 import (
 	"testing"
+	"time"
 
 	. "github.com/smartystreets/goconvey/convey"
 
@@ -241,6 +242,8 @@ func TestAccountDataAccess(t *testing.T) {
 func testHelperUpdateDashboardAcl(dashboardId int64, items ...m.DashboardAcl) error {
 	cmd := m.UpdateDashboardAclCommand{DashboardId: dashboardId}
 	for _, item := range items {
+		item.Created = time.Now()
+		item.Updated = time.Now()
 		cmd.Items = append(cmd.Items, &item)
 	}
 	return UpdateDashboardAcl(&cmd)

pkg/services/sqlstore/quota.go

@@ -2,6 +2,7 @@ package sqlstore
 
 import (
 	"fmt"
+	"time"
 
 	"github.com/grafana/grafana/pkg/bus"
 	m "github.com/grafana/grafana/pkg/models"
@@ -98,8 +99,9 @@ func UpdateOrgQuota(cmd *m.UpdateOrgQuotaCmd) error {
 	return inTransaction(func(sess *DBSession) error {
 		//Check if quota is already defined in the DB
 		quota := m.Quota{
-			Target: cmd.Target,
-			OrgId:  cmd.OrgId,
+			Target:  cmd.Target,
+			OrgId:   cmd.OrgId,
+			Updated: time.Now(),
 		}
 		has, err := sess.Get(&quota)
 		if err != nil {
@@ -107,6 +109,7 @@ func UpdateOrgQuota(cmd *m.UpdateOrgQuotaCmd) error {
 		}
 		quota.Limit = cmd.Limit
 		if has == false {
+			quota.Created = time.Now()
 			//No quota in the DB for this target, so create a new one.
 			if _, err := sess.Insert(&quota); err != nil {
 				return err
@@ -198,8 +201,9 @@ func UpdateUserQuota(cmd *m.UpdateUserQuotaCmd) error {
 	return inTransaction(func(sess *DBSession) error {
 		//Check if quota is already defined in the DB
 		quota := m.Quota{
-			Target: cmd.Target,
-			UserId: cmd.UserId,
+			Target:  cmd.Target,
+			UserId:  cmd.UserId,
+			Updated: time.Now(),
 		}
 		has, err := sess.Get(&quota)
 		if err != nil {
@@ -207,6 +211,7 @@ func UpdateUserQuota(cmd *m.UpdateUserQuotaCmd) error {
 		}
 		quota.Limit = cmd.Limit
 		if has == false {
+			quota.Created = time.Now()
 			//No quota in the DB for this target, so create a new one.
 			if _, err := sess.Insert(&quota); err != nil {
 				return err

pkg/services/sqlstore/quota_test.go

@@ -104,12 +104,12 @@ func TestQuotaCommandsAndQueries(t *testing.T) {
 			})
 		})
 		Convey("Given saved user quota for org", func() {
-			userQoutaCmd := m.UpdateUserQuotaCmd{
+			userQuotaCmd := m.UpdateUserQuotaCmd{
 				UserId: userId,
 				Target: "org_user",
 				Limit:  10,
 			}
-			err := UpdateUserQuota(&userQoutaCmd)
+			err := UpdateUserQuota(&userQuotaCmd)
 			So(err, ShouldBeNil)
 
 			Convey("Should be able to get saved quota by user id and target", func() {

pkg/services/sqlstore/sqlstore.go

@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/grafana/grafana/pkg/bus"
 	"github.com/grafana/grafana/pkg/log"
@@ -35,6 +36,7 @@ type DatabaseConfig struct {
 	ServerCertName                             string
 	MaxOpenConn                                int
 	MaxIdleConn                                int
+	ConnMaxLifetime                            int
 }
 
 var (
@@ -159,18 +161,20 @@ func getEngine() (*xorm.Engine, error) {
 	engine, err := xorm.NewEngine(DbCfg.Type, cnnstr)
 	if err != nil {
 		return nil, err
+	}
+
+	engine.SetMaxOpenConns(DbCfg.MaxOpenConn)
+	engine.SetMaxIdleConns(DbCfg.MaxIdleConn)
+	engine.SetConnMaxLifetime(time.Second * time.Duration(DbCfg.ConnMaxLifetime))
+	debugSql := setting.Cfg.Section("database").Key("log_queries").MustBool(false)
+	if !debugSql {
+		engine.SetLogger(&xorm.DiscardLogger{})
 	} else {
-		engine.SetMaxOpenConns(DbCfg.MaxOpenConn)
-		engine.SetMaxIdleConns(DbCfg.MaxIdleConn)
-		debugSql := setting.Cfg.Section("database").Key("log_queries").MustBool(false)
-		if !debugSql {
-			engine.SetLogger(&xorm.DiscardLogger{})
-		} else {
-			engine.SetLogger(NewXormLogger(log.LvlInfo, log.New("sqlstore.xorm")))
-			engine.ShowSQL(true)
-			engine.ShowExecTime(true)
-		}
+		engine.SetLogger(NewXormLogger(log.LvlInfo, log.New("sqlstore.xorm")))
+		engine.ShowSQL(true)
+		engine.ShowExecTime(true)
 	}
+
 	return engine, nil
 }
 
@@ -204,6 +208,7 @@ func LoadConfig() {
 	}
 	DbCfg.MaxOpenConn = sec.Key("max_open_conn").MustInt(0)
 	DbCfg.MaxIdleConn = sec.Key("max_idle_conn").MustInt(0)
+	DbCfg.ConnMaxLifetime = sec.Key("conn_max_lifetime").MustInt(14400)
 
 	if DbCfg.Type == "sqlite3" {
 		UseSQLite3 = true
@@ -227,8 +232,8 @@ var (
 
 func InitTestDB(t *testing.T) *xorm.Engine {
 	selectedDb := dbSqlite
-	//selectedDb := dbMySql
-	//selectedDb := dbPostgres
+	// selectedDb := dbMySql
+	// selectedDb := dbPostgres
 
 	var x *xorm.Engine
 	var err error
@@ -247,6 +252,9 @@ func InitTestDB(t *testing.T) *xorm.Engine {
 		x, err = xorm.NewEngine(sqlutil.TestDB_Sqlite3.DriverName, sqlutil.TestDB_Sqlite3.ConnStr)
 	}
 
+	x.DatabaseTZ = time.UTC
+	x.TZLocation = time.UTC
+
 	// x.ShowSQL()
 
 	if err != nil {

pkg/setting/setting.go

@@ -131,7 +131,8 @@ var (
 	PluginAppsSkipVerifyTLS bool
 
 	// Session settings.
-	SessionOptions session.Options
+	SessionOptions         session.Options
+	SessionConnMaxLifetime int64
 
 	// Global setting objects.
 	Cfg          *ini.File
@@ -634,6 +635,8 @@ func readSessionConfig() {
 	if SessionOptions.CookiePath == "" {
 		SessionOptions.CookiePath = "/"
 	}
+
+	SessionConnMaxLifetime = Cfg.Section("session").Key("conn_max_lifetime").MustInt64(14400)
 }
 
 func initLogging() {

public/app/core/components/code_editor/code_editor.ts

@@ -21,6 +21,8 @@
  * data-tab-size           - Tab size, default is 2.
  * data-behaviours-enabled - Specifies whether to use behaviors or not. "Behaviors" in this case is the auto-pairing of
  *                           special characters, like quotation marks, parenthesis, or brackets.
+ * data-snippets-enabled   - Specifies whether to use snippets or not. "Snippets" are small pieces of code that can be
+ *                           inserted via the completion box.
  *
  * Keybindings:
  * Ctrl-Enter (Command-Enter): run onChange() function
@@ -49,6 +51,7 @@ const DEFAULT_MODE = 'text';
 const DEFAULT_MAX_LINES = 10;
 const DEFAULT_TAB_SIZE = 2;
 const DEFAULT_BEHAVIOURS = true;
+const DEFAULT_SNIPPETS = true;
 
 let editorTemplate = `<div></div>`;
 
@@ -59,6 +62,7 @@ function link(scope, elem, attrs) {
   let showGutter = attrs.showGutter !== undefined;
   let tabSize = attrs.tabSize || DEFAULT_TAB_SIZE;
   let behavioursEnabled = attrs.behavioursEnabled ? attrs.behavioursEnabled === 'true' : DEFAULT_BEHAVIOURS;
+  let snippetsEnabled = attrs.snippetsEnabled ? attrs.snippetsEnabled === 'true' : DEFAULT_SNIPPETS;
 
   // Initialize editor
   let aceElem = elem.get(0);
@@ -143,7 +147,7 @@ function link(scope, elem, attrs) {
     codeEditor.setOptions({
       enableBasicAutocompletion: true,
       enableLiveAutocompletion: true,
-      enableSnippets: true,
+      enableSnippets: snippetsEnabled,
     });
 
     if (scope.getCompleter()) {

public/app/core/services/keybindingSrv.ts

@@ -178,6 +178,14 @@ export class KeybindingSrv {
       }
     });
 
+    // duplicate panel
+    this.bind('p d', () => {
+      if (dashboard.meta.focusPanelId && dashboard.meta.canEdit) {
+        let panelIndex = dashboard.getPanelInfoById(dashboard.meta.focusPanelId).index;
+        dashboard.duplicatePanel(dashboard.panels[panelIndex]);
+      }
+    });
+
     // share panel
     this.bind('p s', () => {
       if (dashboard.meta.focusPanelId) {

public/app/features/dashboard/specs/viewstate_srv_specs.ts

@@ -30,7 +30,10 @@ describe('when updating view state', function() {
   beforeEach(
     angularMocks.inject(function(dashboardViewStateSrv, $location, $rootScope) {
       $rootScope.onAppEvent = function() {};
-      $rootScope.dashboard = { meta: {} };
+      $rootScope.dashboard = {
+        meta: {},
+        panels: [],
+      };
       viewState = dashboardViewStateSrv.create($rootScope);
       location = $location;
     })

public/app/features/dashboard/view_state_srv.ts

@@ -1,6 +1,7 @@
 import angular from 'angular';
 import _ from 'lodash';
 import config from 'app/core/config';
+import { DashboardModel } from './dashboard_model';
 
 // represents the transient view state
 // like fullscreen panel & edit
@@ -8,7 +9,7 @@ export class DashboardViewState {
   state: any;
   panelScopes: any;
   $scope: any;
-  dashboard: any;
+  dashboard: DashboardModel;
   editStateChanged: any;
   fullscreenPanel: any;
   oldTimeRange: any;
@@ -89,6 +90,12 @@ export class DashboardViewState {
       }
     }
 
+    if ((this.state.fullscreen || this.dashboard.meta.soloMode) && this.state.panelId) {
+      // Trying to render panel in fullscreen when it's in the collapsed row causes an issue.
+      // So in this case expand collapsed row first.
+      this.toggleCollapsedPanelRow(this.state.panelId);
+    }
+
     // if no edit state cleanup tab parm
     if (!this.state.edit) {
       delete this.state.tab;
@@ -103,6 +110,19 @@ export class DashboardViewState {
     this.syncState();
   }
 
+  toggleCollapsedPanelRow(panelId) {
+    for (let panel of this.dashboard.panels) {
+      if (panel.collapsed) {
+        for (let rowPanel of panel.panels) {
+          if (rowPanel.id === panelId) {
+            this.dashboard.toggleRow(panel);
+            return;
+          }
+        }
+      }
+    }
+  }
+
   syncState() {
     if (this.panelScopes.length === 0) {
       return;

public/app/features/panel/metrics_panel_ctrl.ts

@@ -78,8 +78,11 @@ class MetricsPanelCtrl extends PanelCtrl {
         data = data.data;
       }
 
-      this.events.emit('data-snapshot-load', data);
-      return;
+      // Defer panel rendering till the next digest cycle.
+      // For some reason snapshot panels don't init at this time, so this helps to avoid rendering issues.
+      return this.$timeout(() => {
+        this.events.emit('data-snapshot-load', data);
+      });
     }
 
     // // ignore if we have data stream

public/app/plugins/datasource/graphite/add_graphite_func.js

@@ -1,155 +0,0 @@
-define(['angular', 'lodash', 'jquery', 'rst2html', 'tether-drop'], function(angular, _, $, rst2html, Drop) {
-  'use strict';
-
-  angular.module('grafana.directives').directive('graphiteAddFunc', function($compile) {
-    var inputTemplate =
-      '<input type="text"' + ' class="gf-form-input"' + ' spellcheck="false" style="display:none"></input>';
-
-    var buttonTemplate =
-      '<a class="gf-form-label query-part dropdown-toggle"' +
-      ' tabindex="1" gf-dropdown="functionMenu" data-toggle="dropdown">' +
-      '<i class="fa fa-plus"></i></a>';
-
-    return {
-      link: function($scope, elem) {
-        var ctrl = $scope.ctrl;
-
-        var $input = $(inputTemplate);
-        var $button = $(buttonTemplate);
-
-        $input.appendTo(elem);
-        $button.appendTo(elem);
-
-        ctrl.datasource.getFuncDefs().then(function(funcDefs) {
-          var allFunctions = _.map(funcDefs, 'name').sort();
-
-          $scope.functionMenu = createFunctionDropDownMenu(funcDefs);
-
-          $input.attr('data-provide', 'typeahead');
-          $input.typeahead({
-            source: allFunctions,
-            minLength: 1,
-            items: 10,
-            updater: function(value) {
-              var funcDef = ctrl.datasource.getFuncDef(value);
-              if (!funcDef) {
-                // try find close match
-                value = value.toLowerCase();
-                funcDef = _.find(allFunctions, function(funcName) {
-                  return funcName.toLowerCase().indexOf(value) === 0;
-                });
-
-                if (!funcDef) {
-                  return;
-                }
-              }
-
-              $scope.$apply(function() {
-                ctrl.addFunction(funcDef);
-              });
-
-              $input.trigger('blur');
-              return '';
-            },
-          });
-
-          $button.click(function() {
-            $button.hide();
-            $input.show();
-            $input.focus();
-          });
-
-          $input.keyup(function() {
-            elem.toggleClass('open', $input.val() === '');
-          });
-
-          $input.blur(function() {
-            // clicking the function dropdown menu wont
-            // work if you remove class at once
-            setTimeout(function() {
-              $input.val('');
-              $input.hide();
-              $button.show();
-              elem.removeClass('open');
-            }, 200);
-          });
-
-          $compile(elem.contents())($scope);
-        });
-
-        var drop;
-        var cleanUpDrop = function() {
-          if (drop) {
-            drop.destroy();
-            drop = null;
-          }
-        };
-
-        $(elem)
-          .on('mouseenter', 'ul.dropdown-menu li', function() {
-            cleanUpDrop();
-
-            var funcDef;
-            try {
-              funcDef = ctrl.datasource.getFuncDef($('a', this).text());
-            } catch (e) {
-              // ignore
-            }
-
-            if (funcDef && funcDef.description) {
-              var shortDesc = funcDef.description;
-              if (shortDesc.length > 500) {
-                shortDesc = shortDesc.substring(0, 497) + '...';
-              }
-
-              var contentElement = document.createElement('div');
-              contentElement.innerHTML = '<h4>' + funcDef.name + '</h4>' + rst2html(shortDesc);
-
-              drop = new Drop({
-                target: this,
-                content: contentElement,
-                classes: 'drop-popover',
-                openOn: 'always',
-                tetherOptions: {
-                  attachment: 'bottom left',
-                  targetAttachment: 'bottom right',
-                },
-              });
-            }
-          })
-          .on('mouseout', 'ul.dropdown-menu li', function() {
-            cleanUpDrop();
-          });
-
-        $scope.$on('$destroy', cleanUpDrop);
-      },
-    };
-  });
-
-  function createFunctionDropDownMenu(funcDefs) {
-    var categories = {};
-
-    _.forEach(funcDefs, function(funcDef) {
-      if (!funcDef.category) {
-        return;
-      }
-      if (!categories[funcDef.category]) {
-        categories[funcDef.category] = [];
-      }
-      categories[funcDef.category].push({
-        text: funcDef.name,
-        click: "ctrl.addFunction('" + funcDef.name + "')",
-      });
-    });
-
-    return _.sortBy(
-      _.map(categories, function(submenu, category) {
-        return {
-          text: category,
-          submenu: _.sortBy(submenu, 'text'),
-        };
-      }),
-      'text'
-    );
-  }
-});

public/app/plugins/datasource/graphite/add_graphite_func.ts

@@ -0,0 +1,159 @@
+import angular from 'angular';
+import _ from 'lodash';
+import $ from 'jquery';
+import rst2html from 'rst2html';
+import Drop from 'tether-drop';
+
+export function graphiteAddFunc($compile) {
+  const inputTemplate =
+    '<input type="text"' + ' class="gf-form-input"' + ' spellcheck="false" style="display:none"></input>';
+
+  const buttonTemplate =
+    '<a class="gf-form-label query-part dropdown-toggle"' +
+    ' tabindex="1" gf-dropdown="functionMenu" data-toggle="dropdown">' +
+    '<i class="fa fa-plus"></i></a>';
+
+  return {
+    link: function($scope, elem) {
+      var ctrl = $scope.ctrl;
+
+      var $input = $(inputTemplate);
+      var $button = $(buttonTemplate);
+
+      $input.appendTo(elem);
+      $button.appendTo(elem);
+
+      ctrl.datasource.getFuncDefs().then(function(funcDefs) {
+        var allFunctions = _.map(funcDefs, 'name').sort();
+
+        $scope.functionMenu = createFunctionDropDownMenu(funcDefs);
+
+        $input.attr('data-provide', 'typeahead');
+        $input.typeahead({
+          source: allFunctions,
+          minLength: 1,
+          items: 10,
+          updater: function(value) {
+            var funcDef = ctrl.datasource.getFuncDef(value);
+            if (!funcDef) {
+              // try find close match
+              value = value.toLowerCase();
+              funcDef = _.find(allFunctions, function(funcName) {
+                return funcName.toLowerCase().indexOf(value) === 0;
+              });
+
+              if (!funcDef) {
+                return '';
+              }
+            }
+
+            $scope.$apply(function() {
+              ctrl.addFunction(funcDef);
+            });
+
+            $input.trigger('blur');
+            return '';
+          },
+        });
+
+        $button.click(function() {
+          $button.hide();
+          $input.show();
+          $input.focus();
+        });
+
+        $input.keyup(function() {
+          elem.toggleClass('open', $input.val() === '');
+        });
+
+        $input.blur(function() {
+          // clicking the function dropdown menu wont
+          // work if you remove class at once
+          setTimeout(function() {
+            $input.val('');
+            $input.hide();
+            $button.show();
+            elem.removeClass('open');
+          }, 200);
+        });
+
+        $compile(elem.contents())($scope);
+      });
+
+      var drop;
+      var cleanUpDrop = function() {
+        if (drop) {
+          drop.destroy();
+          drop = null;
+        }
+      };
+
+      $(elem)
+        .on('mouseenter', 'ul.dropdown-menu li', function() {
+          cleanUpDrop();
+
+          var funcDef;
+          try {
+            funcDef = ctrl.datasource.getFuncDef($('a', this).text());
+          } catch (e) {
+            // ignore
+          }
+
+          if (funcDef && funcDef.description) {
+            var shortDesc = funcDef.description;
+            if (shortDesc.length > 500) {
+              shortDesc = shortDesc.substring(0, 497) + '...';
+            }
+
+            var contentElement = document.createElement('div');
+            contentElement.innerHTML = '<h4>' + funcDef.name + '</h4>' + rst2html(shortDesc);
+
+            drop = new Drop({
+              target: this,
+              content: contentElement,
+              classes: 'drop-popover',
+              openOn: 'always',
+              tetherOptions: {
+                attachment: 'bottom left',
+                targetAttachment: 'bottom right',
+              },
+            });
+          }
+        })
+        .on('mouseout', 'ul.dropdown-menu li', function() {
+          cleanUpDrop();
+        });
+
+      $scope.$on('$destroy', cleanUpDrop);
+    },
+  };
+}
+
+angular.module('grafana.directives').directive('graphiteAddFunc', graphiteAddFunc);
+
+function createFunctionDropDownMenu(funcDefs) {
+  var categories = {};
+
+  _.forEach(funcDefs, function(funcDef) {
+    if (!funcDef.category) {
+      return;
+    }
+    if (!categories[funcDef.category]) {
+      categories[funcDef.category] = [];
+    }
+    categories[funcDef.category].push({
+      text: funcDef.name,
+      click: "ctrl.addFunction('" + funcDef.name + "')",
+    });
+  });
+
+  return _.sortBy(
+    _.map(categories, function(submenu, category) {
+      return {
+        text: category,
+        submenu: _.sortBy(submenu, 'text'),
+      };
+    }),
+    'text'
+  );
+}

public/app/plugins/datasource/graphite/func_editor.js

@@ -1,309 +0,0 @@
-define([
-  'angular',
-  'lodash',
-  'jquery',
-  'rst2html',
-],
-function (angular, _, $, rst2html) {
-  'use strict';
-
-  angular
-    .module('grafana.directives')
-    .directive('graphiteFuncEditor', function($compile, templateSrv, popoverSrv) {
-
-      var funcSpanTemplate = '<a ng-click="">{{func.def.name}}</a><span>(</span>';
-      var paramTemplate = '<input type="text" style="display:none"' +
-                          ' class="input-small tight-form-func-param"></input>';
-
-      var funcControlsTemplate =
-         '<div class="tight-form-func-controls">' +
-           '<span class="pointer fa fa-arrow-left"></span>' +
-           '<span class="pointer fa fa-question-circle"></span>' +
-           '<span class="pointer fa fa-remove" ></span>' +
-           '<span class="pointer fa fa-arrow-right"></span>' +
-         '</div>';
-
-      return {
-        restrict: 'A',
-        link: function postLink($scope, elem) {
-          var $funcLink = $(funcSpanTemplate);
-          var $funcControls = $(funcControlsTemplate);
-          var ctrl = $scope.ctrl;
-          var func = $scope.func;
-          var scheduledRelink = false;
-          var paramCountAtLink = 0;
-          var cancelBlur = null;
-
-          function clickFuncParam(paramIndex) {
-            /*jshint validthis:true */
-
-            var $link = $(this);
-            var $comma = $link.prev('.comma');
-            var $input = $link.next();
-
-            $input.val(func.params[paramIndex]);
-
-            $comma.removeClass('query-part__last');
-            $link.hide();
-            $input.show();
-            $input.focus();
-            $input.select();
-
-            var typeahead = $input.data('typeahead');
-            if (typeahead) {
-              $input.val('');
-              typeahead.lookup();
-            }
-          }
-
-          function scheduledRelinkIfNeeded() {
-            if (paramCountAtLink === func.params.length) {
-              return;
-            }
-
-            if (!scheduledRelink) {
-              scheduledRelink = true;
-              setTimeout(function() {
-                relink();
-                scheduledRelink = false;
-              }, 200);
-            }
-          }
-
-          function paramDef(index) {
-            if (index < func.def.params.length) {
-              return func.def.params[index];
-            }
-            if (_.last(func.def.params).multiple) {
-              return _.assign({}, _.last(func.def.params), {optional: true});
-            }
-            return {};
-          }
-
-          function switchToLink(inputElem, paramIndex) {
-            /*jshint validthis:true */
-            var $input = $(inputElem);
-
-            clearTimeout(cancelBlur);
-            cancelBlur = null;
-
-            var $link = $input.prev();
-            var $comma = $link.prev('.comma');
-            var newValue = $input.val();
-
-            // remove optional empty params
-            if (newValue !== '' || paramDef(paramIndex).optional) {
-              func.updateParam(newValue, paramIndex);
-              $link.html(newValue ? templateSrv.highlightVariablesAsHtml(newValue) : '&nbsp;');
-            }
-
-            scheduledRelinkIfNeeded();
-
-            $scope.$apply(function() {
-              ctrl.targetChanged();
-            });
-
-            if ($link.hasClass('query-part__last') && newValue === '') {
-              $comma.addClass('query-part__last');
-            } else {
-              $link.removeClass('query-part__last');
-            }
-
-            $input.hide();
-            $link.show();
-          }
-
-          // this = input element
-          function inputBlur(paramIndex) {
-            /*jshint validthis:true */
-            var inputElem = this;
-            // happens long before the click event on the typeahead options
-            // need to have long delay because the blur
-            cancelBlur = setTimeout(function() {
-              switchToLink(inputElem, paramIndex);
-            }, 200);
-          }
-
-          function inputKeyPress(paramIndex, e) {
-            /*jshint validthis:true */
-            if(e.which === 13) {
-              $(this).blur();
-            }
-          }
-
-          function inputKeyDown() {
-            /*jshint validthis:true */
-            this.style.width = (3 + this.value.length) * 8 + 'px';
-          }
-
-          function addTypeahead($input, paramIndex) {
-            $input.attr('data-provide', 'typeahead');
-
-            var options = paramDef(paramIndex).options;
-            if (paramDef(paramIndex).type === 'int') {
-              options = _.map(options, function(val) { return val.toString(); });
-            }
-
-            $input.typeahead({
-              source: options,
-              minLength: 0,
-              items: 20,
-              updater: function (value) {
-                $input.val(value);
-                switchToLink($input[0], paramIndex);
-                return value;
-              }
-            });
-
-            var typeahead = $input.data('typeahead');
-            typeahead.lookup = function () {
-              this.query = this.$element.val() || '';
-              return this.process(this.source);
-            };
-          }
-
-          function toggleFuncControls() {
-            var targetDiv = elem.closest('.tight-form');
-
-            if (elem.hasClass('show-function-controls')) {
-              elem.removeClass('show-function-controls');
-              targetDiv.removeClass('has-open-function');
-              $funcControls.hide();
-              return;
-            }
-
-            elem.addClass('show-function-controls');
-            targetDiv.addClass('has-open-function');
-
-            $funcControls.show();
-          }
-
-          function addElementsAndCompile() {
-            $funcControls.appendTo(elem);
-            $funcLink.appendTo(elem);
-
-            var defParams = _.clone(func.def.params);
-            var lastParam = _.last(func.def.params);
-
-            while (func.params.length >= defParams.length && lastParam && lastParam.multiple) {
-              defParams.push(_.assign({}, lastParam, {optional: true}));
-            }
-
-            _.each(defParams, function(param, index) {
-              if (param.optional && func.params.length < index) {
-                return false;
-              }
-
-              var paramValue = templateSrv.highlightVariablesAsHtml(func.params[index]);
-
-              var last = (index >= func.params.length - 1) && param.optional && !paramValue;
-              if (last && param.multiple) {
-                paramValue = '+';
-              }
-
-              if (index > 0) {
-                $('<span class="comma' + (last ? ' query-part__last' : '') + '">, </span>').appendTo(elem);
-              }
-
-              var $paramLink = $(
-                '<a ng-click="" class="graphite-func-param-link' + (last ? ' query-part__last' : '') + '">'
-                + (paramValue || '&nbsp;') + '</a>');
-              var $input = $(paramTemplate);
-              $input.attr('placeholder', param.name);
-
-              paramCountAtLink++;
-
-              $paramLink.appendTo(elem);
-              $input.appendTo(elem);
-
-              $input.blur(_.partial(inputBlur, index));
-              $input.keyup(inputKeyDown);
-              $input.keypress(_.partial(inputKeyPress, index));
-              $paramLink.click(_.partial(clickFuncParam, index));
-
-              if (param.options) {
-                addTypeahead($input, index);
-              }
-            });
-
-            $('<span>)</span>').appendTo(elem);
-
-            $compile(elem.contents())($scope);
-          }
-
-          function ifJustAddedFocusFirstParam() {
-            if ($scope.func.added) {
-              $scope.func.added = false;
-              setTimeout(function() {
-                elem.find('.graphite-func-param-link').first().click();
-              }, 10);
-            }
-          }
-
-          function registerFuncControlsToggle() {
-            $funcLink.click(toggleFuncControls);
-          }
-
-          function registerFuncControlsActions() {
-            $funcControls.click(function(e) {
-              var $target = $(e.target);
-              if ($target.hasClass('fa-remove')) {
-                toggleFuncControls();
-                $scope.$apply(function() {
-                  ctrl.removeFunction($scope.func);
-                });
-                return;
-              }
-
-              if ($target.hasClass('fa-arrow-left')) {
-                $scope.$apply(function() {
-                  _.move(ctrl.queryModel.functions, $scope.$index, $scope.$index - 1);
-                  ctrl.targetChanged();
-                });
-                return;
-              }
-
-              if ($target.hasClass('fa-arrow-right')) {
-                $scope.$apply(function() {
-                  _.move(ctrl.queryModel.functions, $scope.$index, $scope.$index + 1);
-                  ctrl.targetChanged();
-                });
-                return;
-              }
-
-              if ($target.hasClass('fa-question-circle')) {
-                var funcDef = ctrl.datasource.getFuncDef(func.def.name);
-                if (funcDef && funcDef.description) {
-                  popoverSrv.show({
-                    element: e.target,
-                    position: 'bottom left',
-                    classNames: 'drop-popover drop-function-def',
-                    template: '<div style="overflow:auto;max-height:30rem;">'
-                      + '<h4>' + funcDef.name + '</h4>' + rst2html(funcDef.description) + '</div>',
-                    openOn: 'click',
-                  });
-                } else {
-                  window.open(
-                    "http://graphite.readthedocs.org/en/latest/functions.html#graphite.render.functions." + func.def.name,'_blank');
-                }
-                return;
-              }
-            });
-          }
-
-          function relink() {
-            elem.children().remove();
-
-            addElementsAndCompile();
-            ifJustAddedFocusFirstParam();
-            registerFuncControlsToggle();
-            registerFuncControlsActions();
-          }
-
-          relink();
-        }
-      };
-
-    });
-
-});

public/app/plugins/datasource/graphite/func_editor.ts

@@ -0,0 +1,317 @@
+import angular from 'angular';
+import _ from 'lodash';
+import $ from 'jquery';
+import rst2html from 'rst2html';
+
+export function graphiteFuncEditor($compile, templateSrv, popoverSrv) {
+  const funcSpanTemplate = '<a ng-click="">{{func.def.name}}</a><span>(</span>';
+  const paramTemplate =
+    '<input type="text" style="display:none"' + ' class="input-small tight-form-func-param"></input>';
+
+  const funcControlsTemplate = `
+    <div class="tight-form-func-controls">
+      <span class="pointer fa fa-arrow-left"></span>
+      <span class="pointer fa fa-question-circle"></span>
+      <span class="pointer fa fa-remove" ></span>
+      <span class="pointer fa fa-arrow-right"></span>
+    </div>`;
+
+  return {
+    restrict: 'A',
+    link: function postLink($scope, elem) {
+      var $funcLink = $(funcSpanTemplate);
+      var $funcControls = $(funcControlsTemplate);
+      var ctrl = $scope.ctrl;
+      var func = $scope.func;
+      var scheduledRelink = false;
+      var paramCountAtLink = 0;
+      var cancelBlur = null;
+
+      function clickFuncParam(paramIndex) {
+        /*jshint validthis:true */
+
+        var $link = $(this);
+        var $comma = $link.prev('.comma');
+        var $input = $link.next();
+
+        $input.val(func.params[paramIndex]);
+
+        $comma.removeClass('query-part__last');
+        $link.hide();
+        $input.show();
+        $input.focus();
+        $input.select();
+
+        var typeahead = $input.data('typeahead');
+        if (typeahead) {
+          $input.val('');
+          typeahead.lookup();
+        }
+      }
+
+      function scheduledRelinkIfNeeded() {
+        if (paramCountAtLink === func.params.length) {
+          return;
+        }
+
+        if (!scheduledRelink) {
+          scheduledRelink = true;
+          setTimeout(function() {
+            relink();
+            scheduledRelink = false;
+          }, 200);
+        }
+      }
+
+      function paramDef(index) {
+        if (index < func.def.params.length) {
+          return func.def.params[index];
+        }
+        if (_.last(func.def.params).multiple) {
+          return _.assign({}, _.last(func.def.params), { optional: true });
+        }
+        return {};
+      }
+
+      function switchToLink(inputElem, paramIndex) {
+        /*jshint validthis:true */
+        var $input = $(inputElem);
+
+        clearTimeout(cancelBlur);
+        cancelBlur = null;
+
+        var $link = $input.prev();
+        var $comma = $link.prev('.comma');
+        var newValue = $input.val();
+
+        // remove optional empty params
+        if (newValue !== '' || paramDef(paramIndex).optional) {
+          func.updateParam(newValue, paramIndex);
+          $link.html(newValue ? templateSrv.highlightVariablesAsHtml(newValue) : '&nbsp;');
+        }
+
+        scheduledRelinkIfNeeded();
+
+        $scope.$apply(function() {
+          ctrl.targetChanged();
+        });
+
+        if ($link.hasClass('query-part__last') && newValue === '') {
+          $comma.addClass('query-part__last');
+        } else {
+          $link.removeClass('query-part__last');
+        }
+
+        $input.hide();
+        $link.show();
+      }
+
+      // this = input element
+      function inputBlur(paramIndex) {
+        /*jshint validthis:true */
+        var inputElem = this;
+        // happens long before the click event on the typeahead options
+        // need to have long delay because the blur
+        cancelBlur = setTimeout(function() {
+          switchToLink(inputElem, paramIndex);
+        }, 200);
+      }
+
+      function inputKeyPress(paramIndex, e) {
+        /*jshint validthis:true */
+        if (e.which === 13) {
+          $(this).blur();
+        }
+      }
+
+      function inputKeyDown() {
+        /*jshint validthis:true */
+        this.style.width = (3 + this.value.length) * 8 + 'px';
+      }
+
+      function addTypeahead($input, paramIndex) {
+        $input.attr('data-provide', 'typeahead');
+
+        var options = paramDef(paramIndex).options;
+        if (paramDef(paramIndex).type === 'int') {
+          options = _.map(options, function(val) {
+            return val.toString();
+          });
+        }
+
+        $input.typeahead({
+          source: options,
+          minLength: 0,
+          items: 20,
+          updater: function(value) {
+            $input.val(value);
+            switchToLink($input[0], paramIndex);
+            return value;
+          },
+        });
+
+        var typeahead = $input.data('typeahead');
+        typeahead.lookup = function() {
+          this.query = this.$element.val() || '';
+          return this.process(this.source);
+        };
+      }
+
+      function toggleFuncControls() {
+        var targetDiv = elem.closest('.tight-form');
+
+        if (elem.hasClass('show-function-controls')) {
+          elem.removeClass('show-function-controls');
+          targetDiv.removeClass('has-open-function');
+          $funcControls.hide();
+          return;
+        }
+
+        elem.addClass('show-function-controls');
+        targetDiv.addClass('has-open-function');
+
+        $funcControls.show();
+      }
+
+      function addElementsAndCompile() {
+        $funcControls.appendTo(elem);
+        $funcLink.appendTo(elem);
+
+        var defParams = _.clone(func.def.params);
+        var lastParam = _.last(func.def.params);
+
+        while (func.params.length >= defParams.length && lastParam && lastParam.multiple) {
+          defParams.push(_.assign({}, lastParam, { optional: true }));
+        }
+
+        _.each(defParams, function(param, index) {
+          if (param.optional && func.params.length < index) {
+            return false;
+          }
+
+          var paramValue = templateSrv.highlightVariablesAsHtml(func.params[index]);
+
+          var last = index >= func.params.length - 1 && param.optional && !paramValue;
+          if (last && param.multiple) {
+            paramValue = '+';
+          }
+
+          if (index > 0) {
+            $('<span class="comma' + (last ? ' query-part__last' : '') + '">, </span>').appendTo(elem);
+          }
+
+          var $paramLink = $(
+            '<a ng-click="" class="graphite-func-param-link' +
+              (last ? ' query-part__last' : '') +
+              '">' +
+              (paramValue || '&nbsp;') +
+              '</a>'
+          );
+          var $input = $(paramTemplate);
+          $input.attr('placeholder', param.name);
+
+          paramCountAtLink++;
+
+          $paramLink.appendTo(elem);
+          $input.appendTo(elem);
+
+          $input.blur(_.partial(inputBlur, index));
+          $input.keyup(inputKeyDown);
+          $input.keypress(_.partial(inputKeyPress, index));
+          $paramLink.click(_.partial(clickFuncParam, index));
+
+          if (param.options) {
+            addTypeahead($input, index);
+          }
+
+          return true;
+        });
+
+        $('<span>)</span>').appendTo(elem);
+
+        $compile(elem.contents())($scope);
+      }
+
+      function ifJustAddedFocusFirstParam() {
+        if ($scope.func.added) {
+          $scope.func.added = false;
+          setTimeout(function() {
+            elem
+              .find('.graphite-func-param-link')
+              .first()
+              .click();
+          }, 10);
+        }
+      }
+
+      function registerFuncControlsToggle() {
+        $funcLink.click(toggleFuncControls);
+      }
+
+      function registerFuncControlsActions() {
+        $funcControls.click(function(e) {
+          var $target = $(e.target);
+          if ($target.hasClass('fa-remove')) {
+            toggleFuncControls();
+            $scope.$apply(function() {
+              ctrl.removeFunction($scope.func);
+            });
+            return;
+          }
+
+          if ($target.hasClass('fa-arrow-left')) {
+            $scope.$apply(function() {
+              _.move(ctrl.queryModel.functions, $scope.$index, $scope.$index - 1);
+              ctrl.targetChanged();
+            });
+            return;
+          }
+
+          if ($target.hasClass('fa-arrow-right')) {
+            $scope.$apply(function() {
+              _.move(ctrl.queryModel.functions, $scope.$index, $scope.$index + 1);
+              ctrl.targetChanged();
+            });
+            return;
+          }
+
+          if ($target.hasClass('fa-question-circle')) {
+            var funcDef = ctrl.datasource.getFuncDef(func.def.name);
+            if (funcDef && funcDef.description) {
+              popoverSrv.show({
+                element: e.target,
+                position: 'bottom left',
+                classNames: 'drop-popover drop-function-def',
+                template: `
+                  <div style="overflow:auto;max-height:30rem;">
+                    <h4> ${funcDef.name} </h4>
+                    ${rst2html(funcDef.description)}
+                  </div>`,
+                openOn: 'click',
+              });
+            } else {
+              window.open(
+                'http://graphite.readthedocs.org/en/latest/functions.html#graphite.render.functions.' + func.def.name,
+                '_blank'
+              );
+            }
+            return;
+          }
+        });
+      }
+
+      function relink() {
+        elem.children().remove();
+
+        addElementsAndCompile();
+        ifJustAddedFocusFirstParam();
+        registerFuncControlsToggle();
+        registerFuncControlsActions();
+      }
+
+      relink();
+    },
+  };
+}
+
+angular.module('grafana.directives').directive('graphiteFuncEditor', graphiteFuncEditor);

public/app/plugins/datasource/mssql/specs/datasource_specs.ts

@@ -1,24 +1,26 @@
-import {describe, beforeEach, it, expect, angularMocks} from 'test/lib/common';
+import { describe, beforeEach, it, expect, angularMocks } from 'test/lib/common';
 import moment from 'moment';
 import helpers from 'test/specs/helpers';
-import {MssqlDatasource} from '../datasource';
-import {CustomVariable} from 'app/features/templating/custom_variable';
+import { MssqlDatasource } from '../datasource';
+import { CustomVariable } from 'app/features/templating/custom_variable';
 
 describe('MSSQLDatasource', function() {
   var ctx = new helpers.ServiceTestContext();
-  var instanceSettings = {name: 'mssql'};
+  var instanceSettings = { name: 'mssql' };
 
   beforeEach(angularMocks.module('grafana.core'));
   beforeEach(angularMocks.module('grafana.services'));
   beforeEach(ctx.providePhase(['backendSrv']));
 
-  beforeEach(angularMocks.inject(function($q, $rootScope, $httpBackend, $injector) {
-    ctx.$q = $q;
-    ctx.$httpBackend =  $httpBackend;
-    ctx.$rootScope = $rootScope;
-    ctx.ds = $injector.instantiate(MssqlDatasource, {instanceSettings: instanceSettings});
-    $httpBackend.when('GET', /\.html$/).respond('');
-  }));
+  beforeEach(
+    angularMocks.inject(function($q, $rootScope, $httpBackend, $injector) {
+      ctx.$q = $q;
+      ctx.$httpBackend = $httpBackend;
+      ctx.$rootScope = $rootScope;
+      ctx.ds = $injector.instantiate(MssqlDatasource, { instanceSettings: instanceSettings });
+      $httpBackend.when('GET', /\.html$/).respond('');
+    })
+  );
 
   describe('When performing annotationQuery', function() {
     let results;
@@ -28,12 +30,12 @@ describe('MSSQLDatasource', function() {
     const options = {
       annotation: {
         name: annotationName,
-        rawQuery: 'select time, text, tags from table;'
+        rawQuery: 'select time, text, tags from table;',
       },
       range: {
         from: moment(1432288354),
-        to: moment(1432288401)
-      }
+        to: moment(1432288401),
+      },
     };
 
     const response = {
@@ -42,23 +44,25 @@ describe('MSSQLDatasource', function() {
           refId: annotationName,
           tables: [
             {
-              columns: [{text: 'time'}, {text: 'text'}, {text: 'tags'}],
+              columns: [{ text: 'time' }, { text: 'text' }, { text: 'tags' }],
               rows: [
                 [1432288355, 'some text', 'TagA,TagB'],
                 [1432288390, 'some text2', ' TagB , TagC'],
-                [1432288400, 'some text3']
-              ]
-            }
-          ]
-        }
-      }
+                [1432288400, 'some text3'],
+              ],
+            },
+          ],
+        },
+      },
     };
 
     beforeEach(function() {
       ctx.backendSrv.datasourceRequest = function(options) {
-        return ctx.$q.when({data: response, status: 200});
+        return ctx.$q.when({ data: response, status: 200 });
       };
-      ctx.ds.annotationQuery(options).then(function(data) { results = data; });
+      ctx.ds.annotationQuery(options).then(function(data) {
+        results = data;
+      });
       ctx.$rootScope.$apply();
     });
 
@@ -83,28 +87,26 @@ describe('MSSQLDatasource', function() {
       results: {
         tempvar: {
           meta: {
-            rowCount: 3
+            rowCount: 3,
           },
           refId: 'tempvar',
           tables: [
             {
-              columns: [{text: 'title'}, {text: 'text'}],
-              rows: [
-                ['aTitle', 'some text'],
-                ['aTitle2', 'some text2'],
-                ['aTitle3', 'some text3']
-              ]
-            }
-          ]
-        }
-      }
+              columns: [{ text: 'title' }, { text: 'text' }],
+              rows: [['aTitle', 'some text'], ['aTitle2', 'some text2'], ['aTitle3', 'some text3']],
+            },
+          ],
+        },
+      },
     };
 
     beforeEach(function() {
       ctx.backendSrv.datasourceRequest = function(options) {
-        return ctx.$q.when({data: response, status: 200});
+        return ctx.$q.when({ data: response, status: 200 });
       };
-      ctx.ds.metricFindQuery(query).then(function(data) { results = data; });
+      ctx.ds.metricFindQuery(query).then(function(data) {
+        results = data;
+      });
       ctx.$rootScope.$apply();
     });
 
@@ -122,28 +124,26 @@ describe('MSSQLDatasource', function() {
       results: {
         tempvar: {
           meta: {
-            rowCount: 3
+            rowCount: 3,
           },
           refId: 'tempvar',
           tables: [
             {
-              columns: [{text: '__value'}, {text: '__text'}],
-              rows: [
-                ['value1', 'aTitle'],
-                ['value2', 'aTitle2'],
-                ['value3', 'aTitle3']
-              ]
-            }
-          ]
-        }
-      }
+              columns: [{ text: '__value' }, { text: '__text' }],
+              rows: [['value1', 'aTitle'], ['value2', 'aTitle2'], ['value3', 'aTitle3']],
+            },
+          ],
+        },
+      },
     };
 
     beforeEach(function() {
       ctx.backendSrv.datasourceRequest = function(options) {
-        return ctx.$q.when({data: response, status: 200});
+        return ctx.$q.when({ data: response, status: 200 });
       };
-      ctx.ds.metricFindQuery(query).then(function(data) { results = data; });
+      ctx.ds.metricFindQuery(query).then(function(data) {
+        results = data;
+      });
       ctx.$rootScope.$apply();
     });
 
@@ -163,28 +163,26 @@ describe('MSSQLDatasource', function() {
       results: {
         tempvar: {
           meta: {
-            rowCount: 3
+            rowCount: 3,
           },
           refId: 'tempvar',
           tables: [
             {
-              columns: [{text: '__text'}, {text: '__value'}],
-              rows: [
-                ['aTitle', 'same'],
-                ['aTitle', 'same'],
-                ['aTitle', 'diff']
-              ]
-            }
-          ]
-        }
-      }
+              columns: [{ text: '__text' }, { text: '__value' }],
+              rows: [['aTitle', 'same'], ['aTitle', 'same'], ['aTitle', 'diff']],
+            },
+          ],
+        },
+      },
     };
 
     beforeEach(function() {
       ctx.backendSrv.datasourceRequest = function(options) {
-        return ctx.$q.when({data: response, status: 200});
+        return ctx.$q.when({ data: response, status: 200 });
       };
-      ctx.ds.metricFindQuery(query).then(function(data) { results = data; });
+      ctx.ds.metricFindQuery(query).then(function(data) {
+        results = data;
+      });
       ctx.$rootScope.$apply();
     });
 
@@ -197,7 +195,7 @@ describe('MSSQLDatasource', function() {
 
   describe('When interpolating variables', () => {
     beforeEach(function() {
-      ctx.variable = new CustomVariable({},{});
+      ctx.variable = new CustomVariable({}, {});
     });
 
     describe('and value is a string', () => {
@@ -214,23 +212,22 @@ describe('MSSQLDatasource', function() {
 
     describe('and value is an array of strings', () => {
       it('should return comma separated quoted values', () => {
-        expect(ctx.ds.interpolateVariable(['a', 'b', 'c'], ctx.variable)).to.eql('\'a\',\'b\',\'c\'');
+        expect(ctx.ds.interpolateVariable(['a', 'b', 'c'], ctx.variable)).to.eql("'a','b','c'");
       });
     });
 
     describe('and variable allows multi-value and value is a string', () => {
       it('should return a quoted value', () => {
         ctx.variable.multi = true;
-        expect(ctx.ds.interpolateVariable('abc', ctx.variable)).to.eql('\'abc\'');
+        expect(ctx.ds.interpolateVariable('abc', ctx.variable)).to.eql("'abc'");
       });
     });
 
     describe('and variable allows all and value is a string', () => {
       it('should return a quoted value', () => {
         ctx.variable.includeAll = true;
-        expect(ctx.ds.interpolateVariable('abc', ctx.variable)).to.eql('\'abc\'');
+        expect(ctx.ds.interpolateVariable('abc', ctx.variable)).to.eql("'abc'");
       });
     });
-
   });
 });

public/app/plugins/datasource/prometheus/specs/completer_specs.ts

@@ -47,12 +47,9 @@ describe('Prometheus editor completer', function() {
     variables: [
       {
         name: 'var_name',
-        options: [
-          { text: 'foo', value: 'foo', selected: false },
-          { text: 'bar', value: 'bar', selected: true }
-        ]
-      }
-    ]
+        options: [{ text: 'foo', value: 'foo', selected: false }, { text: 'bar', value: 'bar', selected: true }],
+      },
+    ],
   };
   let completer = new PromCompleter(datasourceStub, templateSrv);
 

public/app/stores/ViewStore/ViewStore.ts

@@ -26,7 +26,9 @@ export const ViewStore = types
     function updateQuery(query: any) {
       self.query.clear();
       for (let key of Object.keys(query)) {
-        self.query.set(key, query[key]);
+        if (query[key]) {
+          self.query.set(key, query[key]);
+        }
       }
     }
 
@@ -34,7 +36,9 @@ export const ViewStore = types
     function updateRouteParams(routeParams: any) {
       self.routeParams.clear();
       for (let key of Object.keys(routeParams)) {
-        self.routeParams.set(key, routeParams[key]);
+        if (routeParams[key]) {
+          self.routeParams.set(key, routeParams[key]);
+        }
       }
     }
 

vendor/github.com/go-xorm/core/column.go

@@ -13,12 +13,13 @@ const (
 	ONLYFROMDB
 )
 
-// database column
+// Column defines database column
 type Column struct {
 	Name            string
 	TableName       string
 	FieldName       string
 	SQLType         SQLType
+	IsJSON          bool
 	Length          int
 	Length2         int
 	Nullable        bool
@@ -37,6 +38,7 @@ type Column struct {
 	SetOptions      map[string]int
 	DisableTimeZone bool
 	TimeZone        *time.Location // column specified time zone
+	Comment         string
 }
 
 func NewColumn(name, fieldName string, sqlType SQLType, len1, len2 int, nullable bool) *Column {
@@ -60,6 +62,7 @@ func NewColumn(name, fieldName string, sqlType SQLType, len1, len2 int, nullable
 		IsVersion:       false,
 		DefaultIsEmpty:  false,
 		EnumOptions:     make(map[string]int),
+		Comment:         "",
 	}
 }
 

vendor/github.com/go-xorm/core/dialect.go

@@ -244,6 +244,9 @@ func (b *Base) CreateTableSql(table *Table, tableName, storeEngine, charset stri
 				sql += col.StringNoPk(b.dialect)
 			}
 			sql = strings.TrimSpace(sql)
+			if b.DriverName() == MYSQL && len(col.Comment) > 0 {
+				sql += " COMMENT '" + col.Comment + "'"
+			}
 			sql += ", "
 		}
 

vendor/github.com/go-xorm/core/rows.go

@@ -247,6 +247,18 @@ type Row struct {
 	err error // deferred error for easy chaining
 }
 
+// ErrorRow return an error row
+func ErrorRow(err error) *Row {
+	return &Row{
+		err: err,
+	}
+}
+
+// NewRow from rows
+func NewRow(rows *Rows, err error) *Row {
+	return &Row{rows, err}
+}
+
 func (row *Row) Columns() ([]string, error) {
 	if row.err != nil {
 		return nil, row.err

vendor/github.com/go-xorm/core/table.go

@@ -22,6 +22,7 @@ type Table struct {
 	Cacher        Cacher
 	StoreEngine   string
 	Charset       string
+	Comment       string
 }
 
 func (table *Table) Columns() []*Column {

vendor/github.com/go-xorm/core/type.go

@@ -100,7 +100,8 @@ var (
 	LongBlob   = "LONGBLOB"
 	Bytea      = "BYTEA"
 
-	Bool = "BOOL"
+	Bool    = "BOOL"
+	Boolean = "BOOLEAN"
 
 	Serial    = "SERIAL"
 	BigSerial = "BIGSERIAL"
@@ -163,7 +164,7 @@ var (
 	uintTypes = sort.StringSlice{"*uint", "*uint16", "*uint32", "*uint8"}
 )
 
-// !nashtsai! treat following var as interal const values, these are used for reflect.TypeOf comparision
+// !nashtsai! treat following var as interal const values, these are used for reflect.TypeOf comparison
 var (
 	c_EMPTY_STRING       string
 	c_BOOL_DEFAULT       bool

vendor/github.com/go-xorm/xorm/lru_cacher.go → vendor/github.com/go-xorm/xorm/cache_lru.go

@@ -15,13 +15,12 @@ import (
 
 // LRUCacher implments cache object facilities
 type LRUCacher struct {
-	idList   *list.List
-	sqlList  *list.List
-	idIndex  map[string]map[string]*list.Element
-	sqlIndex map[string]map[string]*list.Element
-	store    core.CacheStore
-	mutex    sync.Mutex
-	// maxSize    int
+	idList         *list.List
+	sqlList        *list.List
+	idIndex        map[string]map[string]*list.Element
+	sqlIndex       map[string]map[string]*list.Element
+	store          core.CacheStore
+	mutex          sync.Mutex
 	MaxElementSize int
 	Expired        time.Duration
 	GcInterval     time.Duration
@@ -54,8 +53,6 @@ func (m *LRUCacher) RunGC() {
 
 // GC check ids lit and sql list to remove all element expired
 func (m *LRUCacher) GC() {
-	//fmt.Println("begin gc ...")
-	//defer fmt.Println("end gc ...")
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 	var removedNum int
@@ -64,12 +61,10 @@ func (m *LRUCacher) GC() {
 			time.Now().Sub(e.Value.(*idNode).lastVisit) > m.Expired {
 			removedNum++
 			next := e.Next()
-			//fmt.Println("removing ...", e.Value)
 			node := e.Value.(*idNode)
 			m.delBean(node.tbName, node.id)
 			e = next
 		} else {
-			//fmt.Printf("removing %d cache nodes ..., left %d\n", removedNum, m.idList.Len())
 			break
 		}
 	}
@@ -80,12 +75,10 @@ func (m *LRUCacher) GC() {
 			time.Now().Sub(e.Value.(*sqlNode).lastVisit) > m.Expired {
 			removedNum++
 			next := e.Next()
-			//fmt.Println("removing ...", e.Value)
 			node := e.Value.(*sqlNode)
 			m.delIds(node.tbName, node.sql)
 			e = next
 		} else {
-			//fmt.Printf("removing %d cache nodes ..., left %d\n", removedNum, m.sqlList.Len())
 			break
 		}
 	}
@@ -116,7 +109,6 @@ func (m *LRUCacher) GetIds(tableName, sql string) interface{} {
 	}
 
 	m.delIds(tableName, sql)
-
 	return nil
 }
 
@@ -134,7 +126,6 @@ func (m *LRUCacher) GetBean(tableName string, id string) interface{} {
 			// if expired, remove the node and return nil
 			if time.Now().Sub(lastTime) > m.Expired {
 				m.delBean(tableName, id)
-				//m.clearIds(tableName)
 				return nil
 			}
 			m.idList.MoveToBack(el)
@@ -148,7 +139,6 @@ func (m *LRUCacher) GetBean(tableName string, id string) interface{} {
 
 	// store bean is not exist, then remove memory's index
 	m.delBean(tableName, id)
-	//m.clearIds(tableName)
 	return nil
 }
 
@@ -166,8 +156,8 @@ func (m *LRUCacher) clearIds(tableName string) {
 // ClearIds clears all sql-ids mapping on table tableName from cache
 func (m *LRUCacher) ClearIds(tableName string) {
 	m.mutex.Lock()
-	defer m.mutex.Unlock()
 	m.clearIds(tableName)
+	m.mutex.Unlock()
 }
 
 func (m *LRUCacher) clearBeans(tableName string) {
@@ -184,14 +174,13 @@ func (m *LRUCacher) clearBeans(tableName string) {
 // ClearBeans clears all beans in some table
 func (m *LRUCacher) ClearBeans(tableName string) {
 	m.mutex.Lock()
-	defer m.mutex.Unlock()
 	m.clearBeans(tableName)
+	m.mutex.Unlock()
 }
 
 // PutIds pus ids into table
 func (m *LRUCacher) PutIds(tableName, sql string, ids interface{}) {
 	m.mutex.Lock()
-	defer m.mutex.Unlock()
 	if _, ok := m.sqlIndex[tableName]; !ok {
 		m.sqlIndex[tableName] = make(map[string]*list.Element)
 	}
@@ -207,12 +196,12 @@ func (m *LRUCacher) PutIds(tableName, sql string, ids interface{}) {
 		node := e.Value.(*sqlNode)
 		m.delIds(node.tbName, node.sql)
 	}
+	m.mutex.Unlock()
 }
 
 // PutBean puts beans into table
 func (m *LRUCacher) PutBean(tableName string, id string, obj interface{}) {
 	m.mutex.Lock()
-	defer m.mutex.Unlock()
 	var el *list.Element
 	var ok bool
 
@@ -229,6 +218,7 @@ func (m *LRUCacher) PutBean(tableName string, id string, obj interface{}) {
 		node := e.Value.(*idNode)
 		m.delBean(node.tbName, node.id)
 	}
+	m.mutex.Unlock()
 }
 
 func (m *LRUCacher) delIds(tableName, sql string) {
@@ -244,8 +234,8 @@ func (m *LRUCacher) delIds(tableName, sql string) {
 // DelIds deletes ids
 func (m *LRUCacher) DelIds(tableName, sql string) {
 	m.mutex.Lock()
-	defer m.mutex.Unlock()
 	m.delIds(tableName, sql)
+	m.mutex.Unlock()
 }
 
 func (m *LRUCacher) delBean(tableName string, id string) {
@@ -261,8 +251,8 @@ func (m *LRUCacher) delBean(tableName string, id string) {
 // DelBean deletes beans in some table
 func (m *LRUCacher) DelBean(tableName string, id string) {
 	m.mutex.Lock()
-	defer m.mutex.Unlock()
 	m.delBean(tableName, id)
+	m.mutex.Unlock()
 }
 
 type idNode struct {

vendor/github.com/go-xorm/xorm/context.go

@@ -0,0 +1,26 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.8
+
+package xorm
+
+import "context"
+
+// PingContext tests if database is alive
+func (engine *Engine) PingContext(ctx context.Context) error {
+	session := engine.NewSession()
+	defer session.Close()
+	return session.PingContext(ctx)
+}
+
+// PingContext test if database is ok
+func (session *Session) PingContext(ctx context.Context) error {
+	if session.isAutoClose {
+		defer session.Close()
+	}
+
+	session.engine.logger.Infof("PING DATABASE %v", session.engine.DriverName())
+	return session.DB().PingContext(ctx)
+}

vendor/github.com/go-xorm/xorm/convert.go

@@ -209,10 +209,10 @@ func convertAssign(dest, src interface{}) error {
 		if src == nil {
 			dv.Set(reflect.Zero(dv.Type()))
 			return nil
-		} else {
-			dv.Set(reflect.New(dv.Type().Elem()))
-			return convertAssign(dv.Interface(), src)
 		}
+
+		dv.Set(reflect.New(dv.Type().Elem()))
+		return convertAssign(dv.Interface(), src)
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 		s := asString(src)
 		i64, err := strconv.ParseInt(s, 10, dv.Type().Bits())
@@ -247,3 +247,102 @@ func convertAssign(dest, src interface{}) error {
 
 	return fmt.Errorf("unsupported Scan, storing driver.Value type %T into type %T", src, dest)
 }
+
+func asKind(vv reflect.Value, tp reflect.Type) (interface{}, error) {
+	switch tp.Kind() {
+	case reflect.Int64:
+		return vv.Int(), nil
+	case reflect.Int:
+		return int(vv.Int()), nil
+	case reflect.Int32:
+		return int32(vv.Int()), nil
+	case reflect.Int16:
+		return int16(vv.Int()), nil
+	case reflect.Int8:
+		return int8(vv.Int()), nil
+	case reflect.Uint64:
+		return vv.Uint(), nil
+	case reflect.Uint:
+		return uint(vv.Uint()), nil
+	case reflect.Uint32:
+		return uint32(vv.Uint()), nil
+	case reflect.Uint16:
+		return uint16(vv.Uint()), nil
+	case reflect.Uint8:
+		return uint8(vv.Uint()), nil
+	case reflect.String:
+		return vv.String(), nil
+	case reflect.Slice:
+		if tp.Elem().Kind() == reflect.Uint8 {
+			v, err := strconv.ParseInt(string(vv.Interface().([]byte)), 10, 64)
+			if err != nil {
+				return nil, err
+			}
+			return v, nil
+		}
+
+	}
+	return nil, fmt.Errorf("unsupported primary key type: %v, %v", tp, vv)
+}
+
+func convertFloat(v interface{}) (float64, error) {
+	switch v.(type) {
+	case float32:
+		return float64(v.(float32)), nil
+	case float64:
+		return v.(float64), nil
+	case string:
+		i, err := strconv.ParseFloat(v.(string), 64)
+		if err != nil {
+			return 0, err
+		}
+		return i, nil
+	case []byte:
+		i, err := strconv.ParseFloat(string(v.([]byte)), 64)
+		if err != nil {
+			return 0, err
+		}
+		return i, nil
+	}
+	return 0, fmt.Errorf("unsupported type: %v", v)
+}
+
+func convertInt(v interface{}) (int64, error) {
+	switch v.(type) {
+	case int:
+		return int64(v.(int)), nil
+	case int8:
+		return int64(v.(int8)), nil
+	case int16:
+		return int64(v.(int16)), nil
+	case int32:
+		return int64(v.(int32)), nil
+	case int64:
+		return v.(int64), nil
+	case []byte:
+		i, err := strconv.ParseInt(string(v.([]byte)), 10, 64)
+		if err != nil {
+			return 0, err
+		}
+		return i, nil
+	case string:
+		i, err := strconv.ParseInt(v.(string), 10, 64)
+		if err != nil {
+			return 0, err
+		}
+		return i, nil
+	}
+	return 0, fmt.Errorf("unsupported type: %v", v)
+}
+
+func asBool(bs []byte) (bool, error) {
+	if len(bs) == 0 {
+		return false, nil
+	}
+	if bs[0] == 0x00 {
+		return false, nil
+	} else if bs[0] == 0x01 {
+		return true, nil
+	}
+	return strconv.ParseBool(string(bs))
+}

vendor/github.com/go-xorm/xorm/dialect_mssql.go

@@ -215,10 +215,10 @@ func (db *mssql) SqlType(c *core.Column) string {
 	var res string
 	switch t := c.SQLType.Name; t {
 	case core.Bool:
-		res = core.TinyInt
-		if c.Default == "true" {
+		res = core.Bit
+		if strings.EqualFold(c.Default, "true") {
 			c.Default = "1"
-		} else if c.Default == "false" {
+		} else {
 			c.Default = "0"
 		}
 	case core.Serial:
@@ -250,6 +250,9 @@ func (db *mssql) SqlType(c *core.Column) string {
 	case core.Uuid:
 		res = core.Varchar
 		c.Length = 40
+	case core.TinyInt:
+		res = core.TinyInt
+		c.Length = 0
 	default:
 		res = t
 	}
@@ -335,9 +338,15 @@ func (db *mssql) TableCheckSql(tableName string) (string, []interface{}) {
 func (db *mssql) GetColumns(tableName string) ([]string, map[string]*core.Column, error) {
 	args := []interface{}{}
 	s := `select a.name as name, b.name as ctype,a.max_length,a.precision,a.scale,a.is_nullable as nullable,
-	      replace(replace(isnull(c.text,''),'(',''),')','') as vdefault   
-          from sys.columns a left join sys.types b on a.user_type_id=b.user_type_id 
-          left join  sys.syscomments c  on a.default_object_id=c.id 
+	      replace(replace(isnull(c.text,''),'(',''),')','') as vdefault,
+		  ISNULL(i.is_primary_key, 0)
+          from sys.columns a 
+		  left join sys.types b on a.user_type_id=b.user_type_id
+          left join sys.syscomments c on a.default_object_id=c.id
+		  LEFT OUTER JOIN 
+    sys.index_columns ic ON ic.object_id = a.object_id AND ic.column_id = a.column_id
+		  LEFT OUTER JOIN 
+    sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
           where a.object_id=object_id('` + tableName + `')`
 	db.LogSQL(s, args)
 
@@ -352,8 +361,8 @@ func (db *mssql) GetColumns(tableName string) ([]string, map[string]*core.Column
 	for rows.Next() {
 		var name, ctype, vdefault string
 		var maxLen, precision, scale int
-		var nullable bool
-		err = rows.Scan(&name, &ctype, &maxLen, &precision, &scale, &nullable, &vdefault)
+		var nullable, isPK bool
+		err = rows.Scan(&name, &ctype, &maxLen, &precision, &scale, &nullable, &vdefault, &isPK)
 		if err != nil {
 			return nil, nil, err
 		}
@@ -363,6 +372,7 @@ func (db *mssql) GetColumns(tableName string) ([]string, map[string]*core.Column
 		col.Name = strings.Trim(name, "` ")
 		col.Nullable = nullable
 		col.Default = vdefault
+		col.IsPrimaryKey = isPK
 		ct := strings.ToUpper(ctype)
 		if ct == "DECIMAL" {
 			col.Length = precision
@@ -468,9 +478,10 @@ WHERE IXS.TYPE_DESC='NONCLUSTERED' and OBJECT_NAME(IXS.OBJECT_ID) =?
 		}
 
 		colName = strings.Trim(colName, "` ")
-
+		var isRegular bool
 		if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
 			indexName = indexName[5+len(tableName):]
+			isRegular = true
 		}
 
 		var index *core.Index
@@ -479,6 +490,7 @@ WHERE IXS.TYPE_DESC='NONCLUSTERED' and OBJECT_NAME(IXS.OBJECT_ID) =?
 			index = new(core.Index)
 			index.Type = indexType
 			index.Name = indexName
+			index.IsRegular = isRegular
 			indexes[indexName] = index
 		}
 		index.AddColumn(colName)
@@ -534,7 +546,6 @@ type odbcDriver struct {
 func (p *odbcDriver) Parse(driverName, dataSourceName string) (*core.Uri, error) {
 	kv := strings.Split(dataSourceName, ";")
 	var dbName string
-
 	for _, c := range kv {
 		vv := strings.Split(strings.TrimSpace(c), "=")
 		if len(vv) == 2 {

vendor/github.com/go-xorm/xorm/dialect_mysql.go

@@ -299,7 +299,7 @@ func (db *mysql) TableCheckSql(tableName string) (string, []interface{}) {
 func (db *mysql) GetColumns(tableName string) ([]string, map[string]*core.Column, error) {
 	args := []interface{}{db.DbName, tableName}
 	s := "SELECT `COLUMN_NAME`, `IS_NULLABLE`, `COLUMN_DEFAULT`, `COLUMN_TYPE`," +
-		" `COLUMN_KEY`, `EXTRA` FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?"
+		" `COLUMN_KEY`, `EXTRA`,`COLUMN_COMMENT` FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?"
 	db.LogSQL(s, args)
 
 	rows, err := db.DB().Query(s, args...)
@@ -314,13 +314,14 @@ func (db *mysql) GetColumns(tableName string) ([]string, map[string]*core.Column
 		col := new(core.Column)
 		col.Indexes = make(map[string]int)
 
-		var columnName, isNullable, colType, colKey, extra string
+		var columnName, isNullable, colType, colKey, extra, comment string
 		var colDefault *string
-		err = rows.Scan(&columnName, &isNullable, &colDefault, &colType, &colKey, &extra)
+		err = rows.Scan(&columnName, &isNullable, &colDefault, &colType, &colKey, &extra, &comment)
 		if err != nil {
 			return nil, nil, err
 		}
 		col.Name = strings.Trim(columnName, "` ")
+		col.Comment = comment
 		if "YES" == isNullable {
 			col.Nullable = true
 		}
@@ -407,7 +408,7 @@ func (db *mysql) GetColumns(tableName string) ([]string, map[string]*core.Column
 
 func (db *mysql) GetTables() ([]*core.Table, error) {
 	args := []interface{}{db.DbName}
-	s := "SELECT `TABLE_NAME`, `ENGINE`, `TABLE_ROWS`, `AUTO_INCREMENT` from " +
+	s := "SELECT `TABLE_NAME`, `ENGINE`, `TABLE_ROWS`, `AUTO_INCREMENT`, `TABLE_COMMENT` from " +
 		"`INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEMA`=? AND (`ENGINE`='MyISAM' OR `ENGINE` = 'InnoDB' OR `ENGINE` = 'TokuDB')"
 	db.LogSQL(s, args)
 
@@ -420,14 +421,15 @@ func (db *mysql) GetTables() ([]*core.Table, error) {
 	tables := make([]*core.Table, 0)
 	for rows.Next() {
 		table := core.NewEmptyTable()
-		var name, engine, tableRows string
+		var name, engine, tableRows, comment string
 		var autoIncr *string
-		err = rows.Scan(&name, &engine, &tableRows, &autoIncr)
+		err = rows.Scan(&name, &engine, &tableRows, &autoIncr, &comment)
 		if err != nil {
 			return nil, err
 		}
 
 		table.Name = name
+		table.Comment = comment
 		table.StoreEngine = engine
 		tables = append(tables, table)
 	}

vendor/github.com/go-xorm/xorm/dialect_oracle.go

@@ -824,6 +824,12 @@ func (db *oracle) GetIndexes(tableName string) (map[string]*core.Index, error) {
 
 		indexName = strings.Trim(indexName, `" `)
 
+		var isRegular bool
+		if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
+			indexName = indexName[5+len(tableName):]
+			isRegular = true
+		}
+
 		if uniqueness == "UNIQUE" {
 			indexType = core.UniqueType
 		} else {
@@ -836,6 +842,7 @@ func (db *oracle) GetIndexes(tableName string) (map[string]*core.Index, error) {
 			index = new(core.Index)
 			index.Type = indexType
 			index.Name = indexName
+			index.IsRegular = isRegular
 			indexes[indexName] = index
 		}
 		index.AddColumn(colName)

vendor/github.com/go-xorm/xorm/dialect_postgres.go

@@ -8,7 +8,6 @@ import (
 	"errors"
 	"fmt"
 	"net/url"
-	"sort"
 	"strconv"
 	"strings"
 
@@ -781,6 +780,9 @@ func (db *postgres) SqlType(c *core.Column) string {
 	case core.TinyInt:
 		res = core.SmallInt
 		return res
+	case core.Bit:
+		res = core.Boolean
+		return res
 	case core.MediumInt, core.Int, core.Integer:
 		if c.IsAutoIncrement {
 			return core.Serial
@@ -1078,9 +1080,10 @@ func (db *postgres) GetIndexes(tableName string) (map[string]*core.Index, error)
 		}
 		cs := strings.Split(indexdef, "(")
 		colNames = strings.Split(cs[1][0:len(cs[1])-1], ",")
-
+		var isRegular bool
 		if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
 			newIdxName := indexName[5+len(tableName):]
+			isRegular = true
 			if newIdxName != "" {
 				indexName = newIdxName
 			}
@@ -1090,6 +1093,7 @@ func (db *postgres) GetIndexes(tableName string) (map[string]*core.Index, error)
 		for _, colName := range colNames {
 			index.Cols = append(index.Cols, strings.Trim(colName, `" `))
 		}
+		index.IsRegular = isRegular
 		indexes[index.Name] = index
 	}
 	return indexes, nil
@@ -1112,10 +1116,6 @@ func (vs values) Get(k string) (v string) {
 	return vs[k]
 }
 
-func errorf(s string, args ...interface{}) {
-	panic(fmt.Errorf("pq: %s", fmt.Sprintf(s, args...)))
-}
-
 func parseURL(connstr string) (string, error) {
 	u, err := url.Parse(connstr)
 	if err != nil {
@@ -1126,46 +1126,18 @@ func parseURL(connstr string) (string, error) {
 		return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme)
 	}
 
-	var kvs []string
 	escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`)
-	accrue := func(k, v string) {
-		if v != "" {
-			kvs = append(kvs, k+"="+escaper.Replace(v))
-		}
-	}
-
-	if u.User != nil {
-		v := u.User.Username()
-		accrue("user", v)
-
-		v, _ = u.User.Password()
-		accrue("password", v)
-	}
-
-	i := strings.Index(u.Host, ":")
-	if i < 0 {
-		accrue("host", u.Host)
-	} else {
-		accrue("host", u.Host[:i])
-		accrue("port", u.Host[i+1:])
-	}
 
 	if u.Path != "" {
-		accrue("dbname", u.Path[1:])
-	}
-
-	q := u.Query()
-	for k := range q {
-		accrue(k, q.Get(k))
+		return escaper.Replace(u.Path[1:]), nil
 	}
 
-	sort.Strings(kvs) // Makes testing easier (not a performance concern)
-	return strings.Join(kvs, " "), nil
+	return "", nil
 }
 
-func parseOpts(name string, o values) {
+func parseOpts(name string, o values) error {
 	if len(name) == 0 {
-		return
+		return fmt.Errorf("invalid options: %s", name)
 	}
 
 	name = strings.TrimSpace(name)
@@ -1174,31 +1146,36 @@ func parseOpts(name string, o values) {
 	for _, p := range ps {
 		kv := strings.Split(p, "=")
 		if len(kv) < 2 {
-			errorf("invalid option: %q", p)
+			return fmt.Errorf("invalid option: %q", p)
 		}
 		o.Set(kv[0], kv[1])
 	}
+
+	return nil
 }
 
 func (p *pqDriver) Parse(driverName, dataSourceName string) (*core.Uri, error) {
 	db := &core.Uri{DbType: core.POSTGRES}
-	o := make(values)
 	var err error
+
 	if strings.HasPrefix(dataSourceName, "postgresql://") || strings.HasPrefix(dataSourceName, "postgres://") {
-		dataSourceName, err = parseURL(dataSourceName)
+		db.DbName, err = parseURL(dataSourceName)
 		if err != nil {
 			return nil, err
 		}
+	} else {
+		o := make(values)
+		err = parseOpts(dataSourceName, o)
+		if err != nil {
+			return nil, err
+		}
+
+		db.DbName = o.Get("dbname")
 	}
-	parseOpts(dataSourceName, o)
 
-	db.DbName = o.Get("dbname")
 	if db.DbName == "" {
 		return nil, errors.New("dbname is empty")
 	}
-	/*db.Schema = o.Get("schema")
-	if len(db.Schema) == 0 {
-		db.Schema = "public"
-	}*/
+
 	return db, nil
 }

vendor/github.com/go-xorm/xorm/dialect_sqlite3.go

@@ -14,10 +14,6 @@ import (
 	"github.com/go-xorm/core"
 )
 
-// func init() {
-// 	RegisterDialect("sqlite3", &sqlite3{})
-// }
-
 var (
 	sqlite3ReservedWords = map[string]bool{
 		"ABORT":             true,
@@ -310,11 +306,25 @@ func (db *sqlite3) GetColumns(tableName string) ([]string, map[string]*core.Colu
 	for _, colStr := range colCreates {
 		reg = regexp.MustCompile(`,\s`)
 		colStr = reg.ReplaceAllString(colStr, ",")
+		if strings.HasPrefix(strings.TrimSpace(colStr), "PRIMARY KEY") {
+			parts := strings.Split(strings.TrimSpace(colStr), "(")
+			if len(parts) == 2 {
+				pkCols := strings.Split(strings.TrimRight(strings.TrimSpace(parts[1]), ")"), ",")
+				for _, pk := range pkCols {
+					if col, ok := cols[strings.Trim(strings.TrimSpace(pk), "`")]; ok {
+						col.IsPrimaryKey = true
+					}
+				}
+			}
+			continue
+		}
+
 		fields := strings.Fields(strings.TrimSpace(colStr))
 		col := new(core.Column)
 		col.Indexes = make(map[string]int)
 		col.Nullable = true
 		col.DefaultIsEmpty = true
+
 		for idx, field := range fields {
 			if idx == 0 {
 				col.Name = strings.Trim(strings.Trim(field, "`[] "), `"`)
@@ -405,8 +415,10 @@ func (db *sqlite3) GetIndexes(tableName string) (map[string]*core.Index, error)
 		}
 
 		indexName := strings.Trim(sql[nNStart+6:nNEnd], "` []")
+		var isRegular bool
 		if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
 			index.Name = indexName[5+len(tableName):]
+			isRegular = true
 		} else {
 			index.Name = indexName
 		}
@@ -425,6 +437,7 @@ func (db *sqlite3) GetIndexes(tableName string) (map[string]*core.Index, error)
 		for _, col := range colIndexes {
 			index.Cols = append(index.Cols, strings.Trim(col, "` []"))
 		}
+		index.IsRegular = isRegular
 		indexes[index.Name] = index
 	}
 

vendor/github.com/go-xorm/xorm/doc.go

@@ -8,7 +8,7 @@ Package xorm is a simple and powerful ORM for Go.
 
 Installation
 
-Make sure you have installed Go 1.1+ and then:
+Make sure you have installed Go 1.6+ and then:
 
     go get github.com/go-xorm/xorm
 
@@ -51,11 +51,15 @@ There are 8 major ORM methods and many helpful methods to use to operate databas
     // INSERT INTO struct1 () values ()
     // INSERT INTO struct2 () values (),(),()
 
-2. Query one record from database
+2. Query one record or one variable from database
 
     has, err := engine.Get(&user)
     // SELECT * FROM user LIMIT 1
 
+    var id int64
+    has, err := engine.Table("user").Where("name = ?", name).Get(&id)
+    // SELECT id FROM user WHERE name = ? LIMIT 1
+
 3. Query multiple records from database
 
     var sliceOfStructs []Struct
@@ -86,7 +90,7 @@ another is Rows
 
 5. Update one or more records
 
-    affected, err := engine.Id(...).Update(&user)
+    affected, err := engine.ID(...).Update(&user)
     // UPDATE user SET ...
 
 6. Delete one or more records, Delete MUST has condition
@@ -99,6 +103,9 @@ another is Rows
     counts, err := engine.Count(&user)
     // SELECT count(*) AS total FROM user
 
+    counts, err := engine.SQL("select count(*) FROM user").Count()
+    // select count(*) FROM user
+
 8. Sum records
 
     sumFloat64, err := engine.Sum(&user, "id")

vendor/github.com/go-xorm/xorm/engine.go

@@ -19,6 +19,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/go-xorm/builder"
 	"github.com/go-xorm/core"
 )
 
@@ -40,12 +41,29 @@ type Engine struct {
 	showExecTime bool
 
 	logger     core.ILogger
-	TZLocation *time.Location
+	TZLocation *time.Location // The timezone of the application
 	DatabaseTZ *time.Location // The timezone of the database
 
 	disableGlobalCache bool
 
 	tagHandlers map[string]tagHandler
+
+	engineGroup *EngineGroup
+}
+
+// BufferSize sets buffer size for iterate
+func (engine *Engine) BufferSize(size int) *Session {
+	session := engine.NewSession()
+	session.isAutoClose = true
+	return session.BufferSize(size)
+}
+
+// CondDeleted returns the conditions whether a record is soft deleted.
+func (engine *Engine) CondDeleted(colName string) builder.Cond {
+	if engine.dialect.DBType() == core.MSSQL {
+		return builder.IsNull{colName}
+	}
+	return builder.IsNull{colName}.Or(builder.Eq{colName: zeroTime1})
 }
 
 // ShowSQL show SQL statement or not on logger if log level is great than INFO
@@ -78,6 +96,11 @@ func (engine *Engine) SetLogger(logger core.ILogger) {
 	engine.dialect.SetLogger(logger)
 }
 
+// SetLogLevel sets the logger level
+func (engine *Engine) SetLogLevel(level core.LogLevel) {
+	engine.logger.SetLevel(level)
+}
+
 // SetDisableGlobalCache disable global cache or not
 func (engine *Engine) SetDisableGlobalCache(disable bool) {
 	if engine.disableGlobalCache != disable {
@@ -143,7 +166,6 @@ func (engine *Engine) Quote(value string) string {
 
 // QuoteTo quotes string and writes into the buffer
 func (engine *Engine) QuoteTo(buf *bytes.Buffer, value string) {
-
 	if buf == nil {
 		return
 	}
@@ -169,7 +191,7 @@ func (engine *Engine) quote(sql string) string {
 	return engine.dialect.QuoteStr() + sql + engine.dialect.QuoteStr()
 }
 
-// SqlType will be depracated, please use SQLType instead
+// SqlType will be deprecated, please use SQLType instead
 //
 // Deprecated: use SQLType instead
 func (engine *Engine) SqlType(c *core.Column) string {
@@ -201,26 +223,36 @@ func (engine *Engine) SetDefaultCacher(cacher core.Cacher) {
 	engine.Cacher = cacher
 }
 
+// GetDefaultCacher returns the default cacher
+func (engine *Engine) GetDefaultCacher() core.Cacher {
+	return engine.Cacher
+}
+
 // NoCache If you has set default cacher, and you want temporilly stop use cache,
 // you can use NoCache()
 func (engine *Engine) NoCache() *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.NoCache()
 }
 
 // NoCascade If you do not want to auto cascade load object
 func (engine *Engine) NoCascade() *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.NoCascade()
 }
 
 // MapCacher Set a table use a special cacher
-func (engine *Engine) MapCacher(bean interface{}, cacher core.Cacher) {
+func (engine *Engine) MapCacher(bean interface{}, cacher core.Cacher) error {
 	v := rValue(bean)
-	tb := engine.autoMapType(v)
+	tb, err := engine.autoMapType(v)
+	if err != nil {
+		return err
+	}
+
 	tb.Cacher = cacher
+	return nil
 }
 
 // NewDB provides an interface to operate database directly
@@ -240,7 +272,7 @@ func (engine *Engine) Dialect() core.Dialect {
 
 // NewSession New a session
 func (engine *Engine) NewSession() *Session {
-	session := &Session{Engine: engine}
+	session := &Session{engine: engine}
 	session.Init()
 	return session
 }
@@ -254,7 +286,6 @@ func (engine *Engine) Close() error {
 func (engine *Engine) Ping() error {
 	session := engine.NewSession()
 	defer session.Close()
-	engine.logger.Infof("PING DATABASE %v", engine.DriverName())
 	return session.Ping()
 }
 
@@ -262,43 +293,13 @@ func (engine *Engine) Ping() error {
 func (engine *Engine) logSQL(sqlStr string, sqlArgs ...interface{}) {
 	if engine.showSQL && !engine.showExecTime {
 		if len(sqlArgs) > 0 {
-			engine.logger.Infof("[SQL] %v %v", sqlStr, sqlArgs)
+			engine.logger.Infof("[SQL] %v %#v", sqlStr, sqlArgs)
 		} else {
 			engine.logger.Infof("[SQL] %v", sqlStr)
 		}
 	}
 }
 
-func (engine *Engine) logSQLQueryTime(sqlStr string, args []interface{}, executionBlock func() (*core.Stmt, *core.Rows, error)) (*core.Stmt, *core.Rows, error) {
-	if engine.showSQL && engine.showExecTime {
-		b4ExecTime := time.Now()
-		stmt, res, err := executionBlock()
-		execDuration := time.Since(b4ExecTime)
-		if len(args) > 0 {
-			engine.logger.Infof("[SQL] %s %v - took: %v", sqlStr, args, execDuration)
-		} else {
-			engine.logger.Infof("[SQL] %s - took: %v", sqlStr, execDuration)
-		}
-		return stmt, res, err
-	}
-	return executionBlock()
-}
-
-func (engine *Engine) logSQLExecutionTime(sqlStr string, args []interface{}, executionBlock func() (sql.Result, error)) (sql.Result, error) {
-	if engine.showSQL && engine.showExecTime {
-		b4ExecTime := time.Now()
-		res, err := executionBlock()
-		execDuration := time.Since(b4ExecTime)
-		if len(args) > 0 {
-			engine.logger.Infof("[sql] %s [args] %v - took: %v", sqlStr, args, execDuration)
-		} else {
-			engine.logger.Infof("[sql] %s - took: %v", sqlStr, execDuration)
-		}
-		return res, err
-	}
-	return executionBlock()
-}
-
 // Sql provides raw sql input parameter. When you have a complex SQL statement
 // and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
 //
@@ -315,7 +316,7 @@ func (engine *Engine) Sql(querystring string, args ...interface{}) *Session {
 // This    code will execute "select * from user" and set the records to users
 func (engine *Engine) SQL(query interface{}, args ...interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.SQL(query, args...)
 }
 
@@ -324,14 +325,14 @@ func (engine *Engine) SQL(query interface{}, args ...interface{}) *Session {
 // invoked. Call NoAutoTime if you dont' want to fill automatically.
 func (engine *Engine) NoAutoTime() *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.NoAutoTime()
 }
 
 // NoAutoCondition disable auto generate Where condition from bean or not
 func (engine *Engine) NoAutoCondition(no ...bool) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.NoAutoCondition(no...)
 }
 
@@ -565,56 +566,56 @@ func (engine *Engine) tbName(v reflect.Value) string {
 // Cascade use cascade or not
 func (engine *Engine) Cascade(trueOrFalse ...bool) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Cascade(trueOrFalse...)
 }
 
 // Where method provide a condition query
 func (engine *Engine) Where(query interface{}, args ...interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Where(query, args...)
 }
 
-// Id will be depracated, please use ID instead
+// Id will be deprecated, please use ID instead
 func (engine *Engine) Id(id interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Id(id)
 }
 
 // ID method provoide a condition as (id) = ?
 func (engine *Engine) ID(id interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.ID(id)
 }
 
 // Before apply before Processor, affected bean is passed to closure arg
 func (engine *Engine) Before(closures func(interface{})) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Before(closures)
 }
 
 // After apply after insert Processor, affected bean is passed to closure arg
 func (engine *Engine) After(closures func(interface{})) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.After(closures)
 }
 
 // Charset set charset when create table, only support mysql now
 func (engine *Engine) Charset(charset string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Charset(charset)
 }
 
 // StoreEngine set store engine when create table, only support mysql now
 func (engine *Engine) StoreEngine(storeEngine string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.StoreEngine(storeEngine)
 }
 
@@ -623,35 +624,35 @@ func (engine *Engine) StoreEngine(storeEngine string) *Session {
 // but distinct will not provide id
 func (engine *Engine) Distinct(columns ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Distinct(columns...)
 }
 
 // Select customerize your select columns or contents
 func (engine *Engine) Select(str string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Select(str)
 }
 
 // Cols only use the parameters as select or update columns
 func (engine *Engine) Cols(columns ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Cols(columns...)
 }
 
 // AllCols indicates that all columns should be use
 func (engine *Engine) AllCols() *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.AllCols()
 }
 
 // MustCols specify some columns must use even if they are empty
 func (engine *Engine) MustCols(columns ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.MustCols(columns...)
 }
 
@@ -662,77 +663,84 @@ func (engine *Engine) MustCols(columns ...string) *Session {
 // it will use parameters's columns
 func (engine *Engine) UseBool(columns ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.UseBool(columns...)
 }
 
 // Omit only not use the parameters as select or update columns
 func (engine *Engine) Omit(columns ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Omit(columns...)
 }
 
 // Nullable set null when column is zero-value and nullable for update
 func (engine *Engine) Nullable(columns ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Nullable(columns...)
 }
 
 // In will generate "column IN (?, ?)"
 func (engine *Engine) In(column string, args ...interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.In(column, args...)
 }
 
+// NotIn will generate "column NOT IN (?, ?)"
+func (engine *Engine) NotIn(column string, args ...interface{}) *Session {
+	session := engine.NewSession()
+	session.isAutoClose = true
+	return session.NotIn(column, args...)
+}
+
 // Incr provides a update string like "column = column + ?"
 func (engine *Engine) Incr(column string, arg ...interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Incr(column, arg...)
 }
 
 // Decr provides a update string like "column = column - ?"
 func (engine *Engine) Decr(column string, arg ...interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Decr(column, arg...)
 }
 
 // SetExpr provides a update string like "column = {expression}"
 func (engine *Engine) SetExpr(column string, expression string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.SetExpr(column, expression)
 }
 
 // Table temporarily change the Get, Find, Update's table
 func (engine *Engine) Table(tableNameOrBean interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Table(tableNameOrBean)
 }
 
 // Alias set the table alias
 func (engine *Engine) Alias(alias string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Alias(alias)
 }
 
 // Limit will generate "LIMIT start, limit"
 func (engine *Engine) Limit(limit int, start ...int) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Limit(limit, start...)
 }
 
 // Desc will generate "ORDER BY column1 DESC, column2 DESC"
 func (engine *Engine) Desc(colNames ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Desc(colNames...)
 }
 
@@ -744,39 +752,53 @@ func (engine *Engine) Desc(colNames ...string) *Session {
 //
 func (engine *Engine) Asc(colNames ...string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Asc(colNames...)
 }
 
 // OrderBy will generate "ORDER BY order"
 func (engine *Engine) OrderBy(order string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.OrderBy(order)
 }
 
+// Prepare enables prepare statement
+func (engine *Engine) Prepare() *Session {
+	session := engine.NewSession()
+	session.isAutoClose = true
+	return session.Prepare()
+}
+
 // Join the join_operator should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
 func (engine *Engine) Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Join(joinOperator, tablename, condition, args...)
 }
 
 // GroupBy generate group by statement
 func (engine *Engine) GroupBy(keys string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.GroupBy(keys)
 }
 
 // Having generate having statement
 func (engine *Engine) Having(conditions string) *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Having(conditions)
 }
 
-func (engine *Engine) autoMapType(v reflect.Value) *core.Table {
+// UnMapType removes the datbase mapper of a type
+func (engine *Engine) UnMapType(t reflect.Type) {
+	engine.mutex.Lock()
+	defer engine.mutex.Unlock()
+	delete(engine.Tables, t)
+}
+
+func (engine *Engine) autoMapType(v reflect.Value) (*core.Table, error) {
 	t := v.Type()
 	engine.mutex.Lock()
 	defer engine.mutex.Unlock()
@@ -785,24 +807,23 @@ func (engine *Engine) autoMapType(v reflect.Value) *core.Table {
 		var err error
 		table, err = engine.mapType(v)
 		if err != nil {
-			engine.logger.Error(err)
-		} else {
-			engine.Tables[t] = table
-			if engine.Cacher != nil {
-				if v.CanAddr() {
-					engine.GobRegister(v.Addr().Interface())
-				} else {
-					engine.GobRegister(v.Interface())
-				}
+			return nil, err
+		}
+
+		engine.Tables[t] = table
+		if engine.Cacher != nil {
+			if v.CanAddr() {
+				engine.GobRegister(v.Addr().Interface())
+			} else {
+				engine.GobRegister(v.Interface())
 			}
 		}
 	}
-	return table
+	return table, nil
 }
 
 // GobRegister register one struct to gob for cache use
 func (engine *Engine) GobRegister(v interface{}) *Engine {
-	//fmt.Printf("Type: %[1]T => Data: %[1]#v\n", v)
 	gob.Register(v)
 	return engine
 }
@@ -813,10 +834,19 @@ type Table struct {
 	Name string
 }
 
+// IsValid if table is valid
+func (t *Table) IsValid() bool {
+	return t.Table != nil && len(t.Name) > 0
+}
+
 // TableInfo get table info according to bean's content
 func (engine *Engine) TableInfo(bean interface{}) *Table {
 	v := rValue(bean)
-	return &Table{engine.autoMapType(v), engine.tbName(v)}
+	tb, err := engine.autoMapType(v)
+	if err != nil {
+		engine.logger.Error(err)
+	}
+	return &Table{tb, engine.tbName(v)}
 }
 
 func addIndex(indexName string, table *core.Table, col *core.Column, indexType int) {
@@ -911,6 +941,7 @@ func (engine *Engine) mapType(v reflect.Value) (*core.Table, error) {
 
 					k := strings.ToUpper(key)
 					ctx.tagName = k
+					ctx.params = []string{}
 
 					pStart := strings.Index(k, "(")
 					if pStart == 0 {
@@ -918,18 +949,18 @@ func (engine *Engine) mapType(v reflect.Value) (*core.Table, error) {
 					}
 					if pStart > -1 {
 						if !strings.HasSuffix(k, ")") {
-							return nil, errors.New("cannot match ) charactor")
+							return nil, fmt.Errorf("field %s tag %s cannot match ) charactor", col.FieldName, key)
 						}
 
 						ctx.tagName = k[:pStart]
-						ctx.params = strings.Split(k[pStart+1:len(k)-1], ",")
+						ctx.params = strings.Split(key[pStart+1:len(k)-1], ",")
 					}
 
 					if j > 0 {
 						ctx.preTag = strings.ToUpper(tags[j-1])
 					}
 					if j < len(tags)-1 {
-						ctx.nextTag = strings.ToUpper(tags[j+1])
+						ctx.nextTag = tags[j+1]
 					} else {
 						ctx.nextTag = ""
 					}
@@ -993,6 +1024,10 @@ func (engine *Engine) mapType(v reflect.Value) (*core.Table, error) {
 			col = core.NewColumn(engine.ColumnMapper.Obj2Table(t.Field(i).Name),
 				t.Field(i).Name, sqlType, sqlType.DefaultLength,
 				sqlType.DefaultLength2, true)
+
+			if fieldType.Kind() == reflect.Int64 && (strings.ToUpper(col.FieldName) == "ID" || strings.HasSuffix(strings.ToUpper(col.FieldName), ".ID")) {
+				idFieldColName = col.Name
+			}
 		}
 		if col.IsAutoIncrement {
 			col.Nullable = false
@@ -1000,9 +1035,6 @@ func (engine *Engine) mapType(v reflect.Value) (*core.Table, error) {
 
 		table.AddColumn(col)
 
-		if fieldType.Kind() == reflect.Int64 && (strings.ToUpper(col.FieldName) == "ID" || strings.HasSuffix(strings.ToUpper(col.FieldName), ".ID")) {
-			idFieldColName = col.Name
-		}
 	} // end for
 
 	if idFieldColName != "" && len(table.PrimaryKeys) == 0 {
@@ -1066,21 +1098,54 @@ func (engine *Engine) IdOfV(rv reflect.Value) core.PK {
 
 // IDOfV get id from one value of struct
 func (engine *Engine) IDOfV(rv reflect.Value) core.PK {
+	pk, err := engine.idOfV(rv)
+	if err != nil {
+		engine.logger.Error(err)
+		return nil
+	}
+	return pk
+}
+
+func (engine *Engine) idOfV(rv reflect.Value) (core.PK, error) {
 	v := reflect.Indirect(rv)
-	table := engine.autoMapType(v)
+	table, err := engine.autoMapType(v)
+	if err != nil {
+		return nil, err
+	}
+
 	pk := make([]interface{}, len(table.PrimaryKeys))
 	for i, col := range table.PKColumns() {
+		var err error
 		pkField := v.FieldByName(col.FieldName)
 		switch pkField.Kind() {
 		case reflect.String:
-			pk[i] = pkField.String()
+			pk[i], err = engine.idTypeAssertion(col, pkField.String())
 		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-			pk[i] = pkField.Int()
+			pk[i], err = engine.idTypeAssertion(col, strconv.FormatInt(pkField.Int(), 10))
 		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
-			pk[i] = pkField.Uint()
+			// id of uint will be converted to int64
+			pk[i], err = engine.idTypeAssertion(col, strconv.FormatUint(pkField.Uint(), 10))
 		}
+
+		if err != nil {
+			return nil, err
+		}
+	}
+	return core.PK(pk), nil
+}
+
+func (engine *Engine) idTypeAssertion(col *core.Column, sid string) (interface{}, error) {
+	if col.SQLType.IsNumeric() {
+		n, err := strconv.ParseInt(sid, 10, 64)
+		if err != nil {
+			return nil, err
+		}
+		return n, nil
+	} else if col.SQLType.IsText() {
+		return sid, nil
+	} else {
+		return nil, errors.New("not supported")
 	}
-	return core.PK(pk)
 }
 
 // CreateIndexes create indexes
@@ -1101,13 +1166,6 @@ func (engine *Engine) getCacher2(table *core.Table) core.Cacher {
 	return table.Cacher
 }
 
-func (engine *Engine) getCacher(v reflect.Value) core.Cacher {
-	if table := engine.autoMapType(v); table != nil {
-		return table.Cacher
-	}
-	return engine.Cacher
-}
-
 // ClearCacheBean if enabled cache, clear the cache bean
 func (engine *Engine) ClearCacheBean(bean interface{}, id string) error {
 	v := rValue(bean)
@@ -1116,7 +1174,10 @@ func (engine *Engine) ClearCacheBean(bean interface{}, id string) error {
 		return errors.New("error params")
 	}
 	tableName := engine.tbName(v)
-	table := engine.autoMapType(v)
+	table, err := engine.autoMapType(v)
+	if err != nil {
+		return err
+	}
 	cacher := table.Cacher
 	if cacher == nil {
 		cacher = engine.Cacher
@@ -1137,7 +1198,11 @@ func (engine *Engine) ClearCache(beans ...interface{}) error {
 			return errors.New("error params")
 		}
 		tableName := engine.tbName(v)
-		table := engine.autoMapType(v)
+		table, err := engine.autoMapType(v)
+		if err != nil {
+			return err
+		}
+
 		cacher := table.Cacher
 		if cacher == nil {
 			cacher = engine.Cacher
@@ -1154,19 +1219,23 @@ func (engine *Engine) ClearCache(beans ...interface{}) error {
 // table, column, index, unique. but will not delete or change anything.
 // If you change some field, you should change the database manually.
 func (engine *Engine) Sync(beans ...interface{}) error {
+	session := engine.NewSession()
+	defer session.Close()
+
 	for _, bean := range beans {
 		v := rValue(bean)
 		tableName := engine.tbName(v)
-		table := engine.autoMapType(v)
+		table, err := engine.autoMapType(v)
+		if err != nil {
+			return err
+		}
 
-		s := engine.NewSession()
-		defer s.Close()
-		isExist, err := s.Table(bean).isTableExist(tableName)
+		isExist, err := session.Table(bean).isTableExist(tableName)
 		if err != nil {
 			return err
 		}
 		if !isExist {
-			err = engine.CreateTables(bean)
+			err = session.createTable(bean)
 			if err != nil {
 				return err
 			}
@@ -1177,11 +1246,11 @@ func (engine *Engine) Sync(beans ...interface{}) error {
 		  }*/
 		var isEmpty bool
 		if isEmpty {
-			err = engine.DropTables(bean)
+			err = session.dropTable(bean)
 			if err != nil {
 				return err
 			}
-			err = engine.CreateTables(bean)
+			err = session.createTable(bean)
 			if err != nil {
 				return err
 			}
@@ -1192,9 +1261,9 @@ func (engine *Engine) Sync(beans ...interface{}) error {
 					return err
 				}
 				if !isExist {
-					session := engine.NewSession()
-					session.Statement.setRefValue(v)
-					defer session.Close()
+					if err := session.statement.setRefValue(v); err != nil {
+						return err
+					}
 					err = session.addColumn(col.Name)
 					if err != nil {
 						return err
@@ -1203,19 +1272,19 @@ func (engine *Engine) Sync(beans ...interface{}) error {
 			}
 
 			for name, index := range table.Indexes {
-				session := engine.NewSession()
-				session.Statement.setRefValue(v)
-				defer session.Close()
+				if err := session.statement.setRefValue(v); err != nil {
+					return err
+				}
 				if index.Type == core.UniqueType {
-					//isExist, err := session.isIndexExist(table.Name, name, true)
 					isExist, err := session.isIndexExist2(tableName, index.Cols, true)
 					if err != nil {
 						return err
 					}
 					if !isExist {
-						session := engine.NewSession()
-						session.Statement.setRefValue(v)
-						defer session.Close()
+						if err := session.statement.setRefValue(v); err != nil {
+							return err
+						}
+
 						err = session.addUnique(tableName, name)
 						if err != nil {
 							return err
@@ -1227,9 +1296,10 @@ func (engine *Engine) Sync(beans ...interface{}) error {
 						return err
 					}
 					if !isExist {
-						session := engine.NewSession()
-						session.Statement.setRefValue(v)
-						defer session.Close()
+						if err := session.statement.setRefValue(v); err != nil {
+							return err
+						}
+
 						err = session.addIndex(tableName, name)
 						if err != nil {
 							return err
@@ -1251,35 +1321,6 @@ func (engine *Engine) Sync2(beans ...interface{}) error {
 	return s.Sync2(beans...)
 }
 
-func (engine *Engine) unMap(beans ...interface{}) (e error) {
-	engine.mutex.Lock()
-	defer engine.mutex.Unlock()
-	for _, bean := range beans {
-		t := rType(bean)
-		if _, ok := engine.Tables[t]; ok {
-			delete(engine.Tables, t)
-		}
-	}
-	return
-}
-
-// Drop all mapped table
-func (engine *Engine) dropAll() error {
-	session := engine.NewSession()
-	defer session.Close()
-
-	err := session.Begin()
-	if err != nil {
-		return err
-	}
-	err = session.dropAll()
-	if err != nil {
-		session.Rollback()
-		return err
-	}
-	return session.Commit()
-}
-
 // CreateTables create tabls according bean
 func (engine *Engine) CreateTables(beans ...interface{}) error {
 	session := engine.NewSession()
@@ -1291,7 +1332,7 @@ func (engine *Engine) CreateTables(beans ...interface{}) error {
 	}
 
 	for _, bean := range beans {
-		err = session.CreateTable(bean)
+		err = session.createTable(bean)
 		if err != nil {
 			session.Rollback()
 			return err
@@ -1311,7 +1352,7 @@ func (engine *Engine) DropTables(beans ...interface{}) error {
 	}
 
 	for _, bean := range beans {
-		err = session.DropTable(bean)
+		err = session.dropTable(bean)
 		if err != nil {
 			session.Rollback()
 			return err
@@ -1320,10 +1361,11 @@ func (engine *Engine) DropTables(beans ...interface{}) error {
 	return session.Commit()
 }
 
-func (engine *Engine) createAll() error {
+// DropIndexes drop indexes of a table
+func (engine *Engine) DropIndexes(bean interface{}) error {
 	session := engine.NewSession()
 	defer session.Close()
-	return session.createAll()
+	return session.DropIndexes(bean)
 }
 
 // Exec raw sql
@@ -1334,10 +1376,24 @@ func (engine *Engine) Exec(sql string, args ...interface{}) (sql.Result, error)
 }
 
 // Query a raw sql and return records as []map[string][]byte
-func (engine *Engine) Query(sql string, paramStr ...interface{}) (resultsSlice []map[string][]byte, err error) {
+func (engine *Engine) Query(sqlorArgs ...interface{}) (resultsSlice []map[string][]byte, err error) {
+	session := engine.NewSession()
+	defer session.Close()
+	return session.Query(sqlorArgs...)
+}
+
+// QueryString runs a raw sql and return records as []map[string]string
+func (engine *Engine) QueryString(sqlorArgs ...interface{}) ([]map[string]string, error) {
 	session := engine.NewSession()
 	defer session.Close()
-	return session.Query(sql, paramStr...)
+	return session.QueryString(sqlorArgs...)
+}
+
+// QueryInterface runs a raw sql and return records as []map[string]interface{}
+func (engine *Engine) QueryInterface(sqlorArgs ...interface{}) ([]map[string]interface{}, error) {
+	session := engine.NewSession()
+	defer session.Close()
+	return session.QueryInterface(sqlorArgs...)
 }
 
 // Insert one or more records
@@ -1381,6 +1437,13 @@ func (engine *Engine) Get(bean interface{}) (bool, error) {
 	return session.Get(bean)
 }
 
+// Exist returns true if the record exist otherwise return false
+func (engine *Engine) Exist(bean ...interface{}) (bool, error) {
+	session := engine.NewSession()
+	defer session.Close()
+	return session.Exist(bean...)
+}
+
 // Find retrieve records from table, condiBeans's non-empty fields
 // are conditions. beans could be []Struct, []*Struct, map[int64]Struct
 // map[int64]*Struct
@@ -1406,10 +1469,10 @@ func (engine *Engine) Rows(bean interface{}) (*Rows, error) {
 }
 
 // Count counts the records. bean's non-empty fields are conditions.
-func (engine *Engine) Count(bean interface{}) (int64, error) {
+func (engine *Engine) Count(bean ...interface{}) (int64, error) {
 	session := engine.NewSession()
 	defer session.Close()
-	return session.Count(bean)
+	return session.Count(bean...)
 }
 
 // Sum sum the records by some column. bean's non-empty fields are conditions.
@@ -1419,6 +1482,13 @@ func (engine *Engine) Sum(bean interface{}, colName string) (float64, error) {
 	return session.Sum(bean, colName)
 }
 
+// SumInt sum the records by some column. bean's non-empty fields are conditions.
+func (engine *Engine) SumInt(bean interface{}, colName string) (int64, error) {
+	session := engine.NewSession()
+	defer session.Close()
+	return session.SumInt(bean, colName)
+}
+
 // Sums sum the records by some columns. bean's non-empty fields are conditions.
 func (engine *Engine) Sums(bean interface{}, colNames ...string) ([]float64, error) {
 	session := engine.NewSession()
@@ -1474,7 +1544,6 @@ func (engine *Engine) Import(r io.Reader) ([]sql.Result, error) {
 			results = append(results, result)
 			if err != nil {
 				return nil, err
-				//lastError = err
 			}
 		}
 	}
@@ -1482,49 +1551,32 @@ func (engine *Engine) Import(r io.Reader) ([]sql.Result, error) {
 	return results, lastError
 }
 
-// TZTime change one time to xorm time location
-func (engine *Engine) TZTime(t time.Time) time.Time {
-	if !t.IsZero() { // if time is not initialized it's not suitable for Time.In()
-		return t.In(engine.TZLocation)
-	}
-	return t
-}
-
-// NowTime return current time
-func (engine *Engine) NowTime(sqlTypeName string) interface{} {
-	t := time.Now()
-	return engine.FormatTime(sqlTypeName, t)
-}
-
-// NowTime2 return current time
-func (engine *Engine) NowTime2(sqlTypeName string) (interface{}, time.Time) {
+// nowTime return current time
+func (engine *Engine) nowTime(col *core.Column) (interface{}, time.Time) {
 	t := time.Now()
-	return engine.FormatTime(sqlTypeName, t), t
-}
-
-// FormatTime format time
-func (engine *Engine) FormatTime(sqlTypeName string, t time.Time) (v interface{}) {
-	return engine.formatTime(engine.TZLocation, sqlTypeName, t)
+	var tz = engine.DatabaseTZ
+	if !col.DisableTimeZone && col.TimeZone != nil {
+		tz = col.TimeZone
+	}
+	return engine.formatTime(col.SQLType.Name, t.In(tz)), t.In(engine.TZLocation)
 }
 
 func (engine *Engine) formatColTime(col *core.Column, t time.Time) (v interface{}) {
-	if col.DisableTimeZone {
-		return engine.formatTime(nil, col.SQLType.Name, t)
-	} else if col.TimeZone != nil {
-		return engine.formatTime(col.TimeZone, col.SQLType.Name, t)
+	if t.IsZero() {
+		if col.Nullable {
+			return nil
+		}
+		return ""
 	}
-	return engine.formatTime(engine.TZLocation, col.SQLType.Name, t)
-}
 
-func (engine *Engine) formatTime(tz *time.Location, sqlTypeName string, t time.Time) (v interface{}) {
-	if engine.dialect.DBType() == core.ORACLE {
-		return t
-	}
-	if tz != nil {
-		t = t.In(tz)
-	} else {
-		t = engine.TZTime(t)
+	if col.TimeZone != nil {
+		return engine.formatTime(col.SQLType.Name, t.In(col.TimeZone))
 	}
+	return engine.formatTime(col.SQLType.Name, t.In(engine.DatabaseTZ))
+}
+
+// formatTime format time as column type
+func (engine *Engine) formatTime(sqlTypeName string, t time.Time) (v interface{}) {
 	switch sqlTypeName {
 	case core.Time:
 		s := t.Format("2006-01-02 15:04:05") //time.RFC3339
@@ -1532,18 +1584,10 @@ func (engine *Engine) formatTime(tz *time.Location, sqlTypeName string, t time.T
 	case core.Date:
 		v = t.Format("2006-01-02")
 	case core.DateTime, core.TimeStamp:
-		if engine.dialect.DBType() == "ql" {
-			v = t
-		} else if engine.dialect.DBType() == "sqlite3" {
-			v = t.UTC().Format("2006-01-02 15:04:05")
-		} else {
-			v = t.Format("2006-01-02 15:04:05")
-		}
+		v = t.Format("2006-01-02 15:04:05")
 	case core.TimeStampz:
 		if engine.dialect.DBType() == core.MSSQL {
 			v = t.Format("2006-01-02T15:04:05.9999999Z07:00")
-		} else if engine.DriverName() == "mssql" {
-			v = t
 		} else {
 			v = t.Format(time.RFC3339Nano)
 		}
@@ -1555,9 +1599,39 @@ func (engine *Engine) formatTime(tz *time.Location, sqlTypeName string, t time.T
 	return
 }
 
+// GetColumnMapper returns the column name mapper
+func (engine *Engine) GetColumnMapper() core.IMapper {
+	return engine.ColumnMapper
+}
+
+// GetTableMapper returns the table name mapper
+func (engine *Engine) GetTableMapper() core.IMapper {
+	return engine.TableMapper
+}
+
+// GetTZLocation returns time zone of the application
+func (engine *Engine) GetTZLocation() *time.Location {
+	return engine.TZLocation
+}
+
+// SetTZLocation sets time zone of the application
+func (engine *Engine) SetTZLocation(tz *time.Location) {
+	engine.TZLocation = tz
+}
+
+// GetTZDatabase returns time zone of the database
+func (engine *Engine) GetTZDatabase() *time.Location {
+	return engine.DatabaseTZ
+}
+
+// SetTZDatabase sets time zone of the database
+func (engine *Engine) SetTZDatabase(tz *time.Location) {
+	engine.DatabaseTZ = tz
+}
+
 // Unscoped always disable struct tag "deleted"
 func (engine *Engine) Unscoped() *Session {
 	session := engine.NewSession()
-	session.IsAutoClose = true
+	session.isAutoClose = true
 	return session.Unscoped()
 }

vendor/github.com/go-xorm/xorm/engine_cond.go

@@ -0,0 +1,230 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"time"
+
+	"github.com/go-xorm/builder"
+	"github.com/go-xorm/core"
+)
+
+func (engine *Engine) buildConds(table *core.Table, bean interface{},
+	includeVersion bool, includeUpdated bool, includeNil bool,
+	includeAutoIncr bool, allUseBool bool, useAllCols bool, unscoped bool,
+	mustColumnMap map[string]bool, tableName, aliasName string, addedTableName bool) (builder.Cond, error) {
+	var conds []builder.Cond
+	for _, col := range table.Columns() {
+		if !includeVersion && col.IsVersion {
+			continue
+		}
+		if !includeUpdated && col.IsUpdated {
+			continue
+		}
+		if !includeAutoIncr && col.IsAutoIncrement {
+			continue
+		}
+
+		if engine.dialect.DBType() == core.MSSQL && (col.SQLType.Name == core.Text || col.SQLType.IsBlob() || col.SQLType.Name == core.TimeStampz) {
+			continue
+		}
+		if col.SQLType.IsJson() {
+			continue
+		}
+
+		var colName string
+		if addedTableName {
+			var nm = tableName
+			if len(aliasName) > 0 {
+				nm = aliasName
+			}
+			colName = engine.Quote(nm) + "." + engine.Quote(col.Name)
+		} else {
+			colName = engine.Quote(col.Name)
+		}
+
+		fieldValuePtr, err := col.ValueOf(bean)
+		if err != nil {
+			engine.logger.Error(err)
+			continue
+		}
+
+		if col.IsDeleted && !unscoped { // tag "deleted" is enabled
+			conds = append(conds, engine.CondDeleted(colName))
+		}
+
+		fieldValue := *fieldValuePtr
+		if fieldValue.Interface() == nil {
+			continue
+		}
+
+		fieldType := reflect.TypeOf(fieldValue.Interface())
+		requiredField := useAllCols
+
+		if b, ok := getFlagForColumn(mustColumnMap, col); ok {
+			if b {
+				requiredField = true
+			} else {
+				continue
+			}
+		}
+
+		if fieldType.Kind() == reflect.Ptr {
+			if fieldValue.IsNil() {
+				if includeNil {
+					conds = append(conds, builder.Eq{colName: nil})
+				}
+				continue
+			} else if !fieldValue.IsValid() {
+				continue
+			} else {
+				// dereference ptr type to instance type
+				fieldValue = fieldValue.Elem()
+				fieldType = reflect.TypeOf(fieldValue.Interface())
+				requiredField = true
+			}
+		}
+
+		var val interface{}
+		switch fieldType.Kind() {
+		case reflect.Bool:
+			if allUseBool || requiredField {
+				val = fieldValue.Interface()
+			} else {
+				// if a bool in a struct, it will not be as a condition because it default is false,
+				// please use Where() instead
+				continue
+			}
+		case reflect.String:
+			if !requiredField && fieldValue.String() == "" {
+				continue
+			}
+			// for MyString, should convert to string or panic
+			if fieldType.String() != reflect.String.String() {
+				val = fieldValue.String()
+			} else {
+				val = fieldValue.Interface()
+			}
+		case reflect.Int8, reflect.Int16, reflect.Int, reflect.Int32, reflect.Int64:
+			if !requiredField && fieldValue.Int() == 0 {
+				continue
+			}
+			val = fieldValue.Interface()
+		case reflect.Float32, reflect.Float64:
+			if !requiredField && fieldValue.Float() == 0.0 {
+				continue
+			}
+			val = fieldValue.Interface()
+		case reflect.Uint8, reflect.Uint16, reflect.Uint, reflect.Uint32, reflect.Uint64:
+			if !requiredField && fieldValue.Uint() == 0 {
+				continue
+			}
+			t := int64(fieldValue.Uint())
+			val = reflect.ValueOf(&t).Interface()
+		case reflect.Struct:
+			if fieldType.ConvertibleTo(core.TimeType) {
+				t := fieldValue.Convert(core.TimeType).Interface().(time.Time)
+				if !requiredField && (t.IsZero() || !fieldValue.IsValid()) {
+					continue
+				}
+				val = engine.formatColTime(col, t)
+			} else if _, ok := reflect.New(fieldType).Interface().(core.Conversion); ok {
+				continue
+			} else if valNul, ok := fieldValue.Interface().(driver.Valuer); ok {
+				val, _ = valNul.Value()
+				if val == nil {
+					continue
+				}
+			} else {
+				if col.SQLType.IsJson() {
+					if col.SQLType.IsText() {
+						bytes, err := json.Marshal(fieldValue.Interface())
+						if err != nil {
+							engine.logger.Error(err)
+							continue
+						}
+						val = string(bytes)
+					} else if col.SQLType.IsBlob() {
+						var bytes []byte
+						var err error
+						bytes, err = json.Marshal(fieldValue.Interface())
+						if err != nil {
+							engine.logger.Error(err)
+							continue
+						}
+						val = bytes
+					}
+				} else {
+					engine.autoMapType(fieldValue)
+					if table, ok := engine.Tables[fieldValue.Type()]; ok {
+						if len(table.PrimaryKeys) == 1 {
+							pkField := reflect.Indirect(fieldValue).FieldByName(table.PKColumns()[0].FieldName)
+							// fix non-int pk issues
+							//if pkField.Int() != 0 {
+							if pkField.IsValid() && !isZero(pkField.Interface()) {
+								val = pkField.Interface()
+							} else {
+								continue
+							}
+						} else {
+							//TODO: how to handler?
+							return nil, fmt.Errorf("not supported %v as %v", fieldValue.Interface(), table.PrimaryKeys)
+						}
+					} else {
+						val = fieldValue.Interface()
+					}
+				}
+			}
+		case reflect.Array:
+			continue
+		case reflect.Slice, reflect.Map:
+			if fieldValue == reflect.Zero(fieldType) {
+				continue
+			}
+			if fieldValue.IsNil() || !fieldValue.IsValid() || fieldValue.Len() == 0 {
+				continue
+			}
+
+			if col.SQLType.IsText() {
+				bytes, err := json.Marshal(fieldValue.Interface())
+				if err != nil {
+					engine.logger.Error(err)
+					continue
+				}
+				val = string(bytes)
+			} else if col.SQLType.IsBlob() {
+				var bytes []byte
+				var err error
+				if (fieldType.Kind() == reflect.Array || fieldType.Kind() == reflect.Slice) &&
+					fieldType.Elem().Kind() == reflect.Uint8 {
+					if fieldValue.Len() > 0 {
+						val = fieldValue.Bytes()
+					} else {
+						continue
+					}
+				} else {
+					bytes, err = json.Marshal(fieldValue.Interface())
+					if err != nil {
+						engine.logger.Error(err)
+						continue
+					}
+					val = bytes
+				}
+			} else {
+				continue
+			}
+		default:
+			val = fieldValue.Interface()
+		}
+
+		conds = append(conds, builder.Eq{colName: val})
+	}
+
+	return builder.And(conds...), nil
+}

vendor/github.com/go-xorm/xorm/engine_group.go

@@ -0,0 +1,194 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import (
+	"github.com/go-xorm/core"
+)
+
+// EngineGroup defines an engine group
+type EngineGroup struct {
+	*Engine
+	slaves []*Engine
+	policy GroupPolicy
+}
+
+// NewEngineGroup creates a new engine group
+func NewEngineGroup(args1 interface{}, args2 interface{}, policies ...GroupPolicy) (*EngineGroup, error) {
+	var eg EngineGroup
+	if len(policies) > 0 {
+		eg.policy = policies[0]
+	} else {
+		eg.policy = RoundRobinPolicy()
+	}
+
+	driverName, ok1 := args1.(string)
+	conns, ok2 := args2.([]string)
+	if ok1 && ok2 {
+		engines := make([]*Engine, len(conns))
+		for i, conn := range conns {
+			engine, err := NewEngine(driverName, conn)
+			if err != nil {
+				return nil, err
+			}
+			engine.engineGroup = &eg
+			engines[i] = engine
+		}
+
+		eg.Engine = engines[0]
+		eg.slaves = engines[1:]
+		return &eg, nil
+	}
+
+	master, ok3 := args1.(*Engine)
+	slaves, ok4 := args2.([]*Engine)
+	if ok3 && ok4 {
+		master.engineGroup = &eg
+		for i := 0; i < len(slaves); i++ {
+			slaves[i].engineGroup = &eg
+		}
+		eg.Engine = master
+		eg.slaves = slaves
+		return &eg, nil
+	}
+	return nil, ErrParamsType
+}
+
+// Close the engine
+func (eg *EngineGroup) Close() error {
+	err := eg.Engine.Close()
+	if err != nil {
+		return err
+	}
+
+	for i := 0; i < len(eg.slaves); i++ {
+		err := eg.slaves[i].Close()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Master returns the master engine
+func (eg *EngineGroup) Master() *Engine {
+	return eg.Engine
+}
+
+// Ping tests if database is alive
+func (eg *EngineGroup) Ping() error {
+	if err := eg.Engine.Ping(); err != nil {
+		return err
+	}
+
+	for _, slave := range eg.slaves {
+		if err := slave.Ping(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// SetColumnMapper set the column name mapping rule
+func (eg *EngineGroup) SetColumnMapper(mapper core.IMapper) {
+	eg.Engine.ColumnMapper = mapper
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].ColumnMapper = mapper
+	}
+}
+
+// SetDefaultCacher set the default cacher
+func (eg *EngineGroup) SetDefaultCacher(cacher core.Cacher) {
+	eg.Engine.SetDefaultCacher(cacher)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].SetDefaultCacher(cacher)
+	}
+}
+
+// SetLogger set the new logger
+func (eg *EngineGroup) SetLogger(logger core.ILogger) {
+	eg.Engine.SetLogger(logger)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].SetLogger(logger)
+	}
+}
+
+// SetLogLevel sets the logger level
+func (eg *EngineGroup) SetLogLevel(level core.LogLevel) {
+	eg.Engine.SetLogLevel(level)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].SetLogLevel(level)
+	}
+}
+
+// SetMapper set the name mapping rules
+func (eg *EngineGroup) SetMapper(mapper core.IMapper) {
+	eg.Engine.SetMapper(mapper)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].SetMapper(mapper)
+	}
+}
+
+// SetMaxIdleConns set the max idle connections on pool, default is 2
+func (eg *EngineGroup) SetMaxIdleConns(conns int) {
+	eg.Engine.db.SetMaxIdleConns(conns)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].db.SetMaxIdleConns(conns)
+	}
+}
+
+// SetMaxOpenConns is only available for go 1.2+
+func (eg *EngineGroup) SetMaxOpenConns(conns int) {
+	eg.Engine.db.SetMaxOpenConns(conns)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].db.SetMaxOpenConns(conns)
+	}
+}
+
+// SetPolicy set the group policy
+func (eg *EngineGroup) SetPolicy(policy GroupPolicy) *EngineGroup {
+	eg.policy = policy
+	return eg
+}
+
+// SetTableMapper set the table name mapping rule
+func (eg *EngineGroup) SetTableMapper(mapper core.IMapper) {
+	eg.Engine.TableMapper = mapper
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].TableMapper = mapper
+	}
+}
+
+// ShowExecTime show SQL statement and execute time or not on logger if log level is great than INFO
+func (eg *EngineGroup) ShowExecTime(show ...bool) {
+	eg.Engine.ShowExecTime(show...)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].ShowExecTime(show...)
+	}
+}
+
+// ShowSQL show SQL statement or not on logger if log level is great than INFO
+func (eg *EngineGroup) ShowSQL(show ...bool) {
+	eg.Engine.ShowSQL(show...)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].ShowSQL(show...)
+	}
+}
+
+// Slave returns one of the physical databases which is a slave according the policy
+func (eg *EngineGroup) Slave() *Engine {
+	switch len(eg.slaves) {
+	case 0:
+		return eg.Engine
+	case 1:
+		return eg.slaves[0]
+	}
+	return eg.policy.Slave(eg)
+}
+
+// Slaves returns all the slaves
+func (eg *EngineGroup) Slaves() []*Engine {
+	return eg.slaves
+}

vendor/github.com/go-xorm/xorm/engine_group_policy.go

@@ -0,0 +1,116 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import (
+	"math/rand"
+	"sync"
+	"time"
+)
+
+// GroupPolicy is be used by chosing the current slave from slaves
+type GroupPolicy interface {
+	Slave(*EngineGroup) *Engine
+}
+
+// GroupPolicyHandler should be used when a function is a GroupPolicy
+type GroupPolicyHandler func(*EngineGroup) *Engine
+
+// Slave implements the chosen of slaves
+func (h GroupPolicyHandler) Slave(eg *EngineGroup) *Engine {
+	return h(eg)
+}
+
+// RandomPolicy implmentes randomly chose the slave of slaves
+func RandomPolicy() GroupPolicyHandler {
+	var r = rand.New(rand.NewSource(time.Now().UnixNano()))
+	return func(g *EngineGroup) *Engine {
+		return g.Slaves()[r.Intn(len(g.Slaves()))]
+	}
+}
+
+// WeightRandomPolicy implmentes randomly chose the slave of slaves
+func WeightRandomPolicy(weights []int) GroupPolicyHandler {
+	var rands = make([]int, 0, len(weights))
+	for i := 0; i < len(weights); i++ {
+		for n := 0; n < weights[i]; n++ {
+			rands = append(rands, i)
+		}
+	}
+	var r = rand.New(rand.NewSource(time.Now().UnixNano()))
+
+	return func(g *EngineGroup) *Engine {
+		var slaves = g.Slaves()
+		idx := rands[r.Intn(len(rands))]
+		if idx >= len(slaves) {
+			idx = len(slaves) - 1
+		}
+		return slaves[idx]
+	}
+}
+
+func RoundRobinPolicy() GroupPolicyHandler {
+	var pos = -1
+	var lock sync.Mutex
+	return func(g *EngineGroup) *Engine {
+		var slaves = g.Slaves()
+
+		lock.Lock()
+		defer lock.Unlock()
+		pos++
+		if pos >= len(slaves) {
+			pos = 0
+		}
+
+		return slaves[pos]
+	}
+}
+
+func WeightRoundRobinPolicy(weights []int) GroupPolicyHandler {
+	var rands = make([]int, 0, len(weights))
+	for i := 0; i < len(weights); i++ {
+		for n := 0; n < weights[i]; n++ {
+			rands = append(rands, i)
+		}
+	}
+	var pos = -1
+	var lock sync.Mutex
+
+	return func(g *EngineGroup) *Engine {
+		var slaves = g.Slaves()
+		lock.Lock()
+		defer lock.Unlock()
+		pos++
+		if pos >= len(rands) {
+			pos = 0
+		}
+
+		idx := rands[pos]
+		if idx >= len(slaves) {
+			idx = len(slaves) - 1
+		}
+		return slaves[idx]
+	}
+}
+
+// LeastConnPolicy implements GroupPolicy, every time will get the least connections slave
+func LeastConnPolicy() GroupPolicyHandler {
+	return func(g *EngineGroup) *Engine {
+		var slaves = g.Slaves()
+		connections := 0
+		idx := 0
+		for i := 0; i < len(slaves); i++ {
+			openConnections := slaves[i].DB().Stats().OpenConnections
+			if i == 0 {
+				connections = openConnections
+				idx = i
+			} else if openConnections <= connections {
+				connections = openConnections
+				idx = i
+			}
+		}
+		return slaves[idx]
+	}
+}

vendor/github.com/go-xorm/xorm/engine_maxlife.go

@@ -0,0 +1,22 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.6
+
+package xorm
+
+import "time"
+
+// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
+func (engine *Engine) SetConnMaxLifetime(d time.Duration) {
+	engine.db.SetConnMaxLifetime(d)
+}
+
+// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
+func (eg *EngineGroup) SetConnMaxLifetime(d time.Duration) {
+	eg.Engine.SetConnMaxLifetime(d)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].SetConnMaxLifetime(d)
+	}
+}

vendor/github.com/go-xorm/xorm/error.go

@@ -23,4 +23,6 @@ var (
 	ErrNeedDeletedCond = errors.New("Delete need at least one condition")
 	// ErrNotImplemented not implemented
 	ErrNotImplemented = errors.New("Not implemented")
+	// ErrConditionType condition type unsupported
+	ErrConditionType = errors.New("Unsupported conditon type")
 )

vendor/github.com/go-xorm/xorm/helpers.go

@@ -196,25 +196,43 @@ func isArrayValueZero(v reflect.Value) bool {
 
 func int64ToIntValue(id int64, tp reflect.Type) reflect.Value {
 	var v interface{}
-	switch tp.Kind() {
+	kind := tp.Kind()
+
+	if kind == reflect.Ptr {
+		kind = tp.Elem().Kind()
+	}
+
+	switch kind {
 	case reflect.Int16:
-		v = int16(id)
+		temp := int16(id)
+		v = &temp
 	case reflect.Int32:
-		v = int32(id)
+		temp := int32(id)
+		v = &temp
 	case reflect.Int:
-		v = int(id)
+		temp := int(id)
+		v = &temp
 	case reflect.Int64:
-		v = id
+		temp := id
+		v = &temp
 	case reflect.Uint16:
-		v = uint16(id)
+		temp := uint16(id)
+		v = &temp
 	case reflect.Uint32:
-		v = uint32(id)
+		temp := uint32(id)
+		v = &temp
 	case reflect.Uint64:
-		v = uint64(id)
+		temp := uint64(id)
+		v = &temp
 	case reflect.Uint:
-		v = uint(id)
+		temp := uint(id)
+		v = &temp
+	}
+
+	if tp.Kind() == reflect.Ptr {
+		return reflect.ValueOf(v).Convert(tp)
 	}
-	return reflect.ValueOf(v).Convert(tp)
+	return reflect.ValueOf(v).Elem().Convert(tp)
 }
 
 func int64ToInt(id int64, tp reflect.Type) interface{} {
@@ -302,180 +320,6 @@ func sliceEq(left, right []string) bool {
 	return true
 }
 
-func reflect2value(rawValue *reflect.Value) (str string, err error) {
-	aa := reflect.TypeOf((*rawValue).Interface())
-	vv := reflect.ValueOf((*rawValue).Interface())
-	switch aa.Kind() {
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		str = strconv.FormatInt(vv.Int(), 10)
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
-		str = strconv.FormatUint(vv.Uint(), 10)
-	case reflect.Float32, reflect.Float64:
-		str = strconv.FormatFloat(vv.Float(), 'f', -1, 64)
-	case reflect.String:
-		str = vv.String()
-	case reflect.Array, reflect.Slice:
-		switch aa.Elem().Kind() {
-		case reflect.Uint8:
-			data := rawValue.Interface().([]byte)
-			str = string(data)
-		default:
-			err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
-		}
-	// time type
-	case reflect.Struct:
-		if aa.ConvertibleTo(core.TimeType) {
-			str = vv.Convert(core.TimeType).Interface().(time.Time).Format(time.RFC3339Nano)
-		} else {
-			err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
-		}
-	case reflect.Bool:
-		str = strconv.FormatBool(vv.Bool())
-	case reflect.Complex128, reflect.Complex64:
-		str = fmt.Sprintf("%v", vv.Complex())
-	/* TODO: unsupported types below
-	   case reflect.Map:
-	   case reflect.Ptr:
-	   case reflect.Uintptr:
-	   case reflect.UnsafePointer:
-	   case reflect.Chan, reflect.Func, reflect.Interface:
-	*/
-	default:
-		err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
-	}
-	return
-}
-
-func value2Bytes(rawValue *reflect.Value) (data []byte, err error) {
-	var str string
-	str, err = reflect2value(rawValue)
-	if err != nil {
-		return
-	}
-	data = []byte(str)
-	return
-}
-
-func value2String(rawValue *reflect.Value) (data string, err error) {
-	data, err = reflect2value(rawValue)
-	if err != nil {
-		return
-	}
-	return
-}
-
-func rows2Strings(rows *core.Rows) (resultsSlice []map[string]string, err error) {
-	fields, err := rows.Columns()
-	if err != nil {
-		return nil, err
-	}
-	for rows.Next() {
-		result, err := row2mapStr(rows, fields)
-		if err != nil {
-			return nil, err
-		}
-		resultsSlice = append(resultsSlice, result)
-	}
-
-	return resultsSlice, nil
-}
-
-func rows2maps(rows *core.Rows) (resultsSlice []map[string][]byte, err error) {
-	fields, err := rows.Columns()
-	if err != nil {
-		return nil, err
-	}
-	for rows.Next() {
-		result, err := row2map(rows, fields)
-		if err != nil {
-			return nil, err
-		}
-		resultsSlice = append(resultsSlice, result)
-	}
-
-	return resultsSlice, nil
-}
-
-func row2map(rows *core.Rows, fields []string) (resultsMap map[string][]byte, err error) {
-	result := make(map[string][]byte)
-	scanResultContainers := make([]interface{}, len(fields))
-	for i := 0; i < len(fields); i++ {
-		var scanResultContainer interface{}
-		scanResultContainers[i] = &scanResultContainer
-	}
-	if err := rows.Scan(scanResultContainers...); err != nil {
-		return nil, err
-	}
-
-	for ii, key := range fields {
-		rawValue := reflect.Indirect(reflect.ValueOf(scanResultContainers[ii]))
-		//if row is null then ignore
-		if rawValue.Interface() == nil {
-			//fmt.Println("ignore ...", key, rawValue)
-			continue
-		}
-
-		if data, err := value2Bytes(&rawValue); err == nil {
-			result[key] = data
-		} else {
-			return nil, err // !nashtsai! REVIEW, should return err or just error log?
-		}
-	}
-	return result, nil
-}
-
-func row2mapStr(rows *core.Rows, fields []string) (resultsMap map[string]string, err error) {
-	result := make(map[string]string)
-	scanResultContainers := make([]interface{}, len(fields))
-	for i := 0; i < len(fields); i++ {
-		var scanResultContainer interface{}
-		scanResultContainers[i] = &scanResultContainer
-	}
-	if err := rows.Scan(scanResultContainers...); err != nil {
-		return nil, err
-	}
-
-	for ii, key := range fields {
-		rawValue := reflect.Indirect(reflect.ValueOf(scanResultContainers[ii]))
-		//if row is null then ignore
-		if rawValue.Interface() == nil {
-			//fmt.Println("ignore ...", key, rawValue)
-			continue
-		}
-
-		if data, err := value2String(&rawValue); err == nil {
-			result[key] = data
-		} else {
-			return nil, err // !nashtsai! REVIEW, should return err or just error log?
-		}
-	}
-	return result, nil
-}
-
-func txQuery2(tx *core.Tx, sqlStr string, params ...interface{}) (resultsSlice []map[string]string, err error) {
-	rows, err := tx.Query(sqlStr, params...)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-
-	return rows2Strings(rows)
-}
-
-func query2(db *core.DB, sqlStr string, params ...interface{}) (resultsSlice []map[string]string, err error) {
-	s, err := db.Prepare(sqlStr)
-	if err != nil {
-		return nil, err
-	}
-	defer s.Close()
-	rows, err := s.Query(params...)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-	return rows2Strings(rows)
-}
-
 func setColumnInt(bean interface{}, col *core.Column, t int64) {
 	v, err := col.ValueOf(bean)
 	if err != nil {
@@ -514,7 +358,7 @@ func genCols(table *core.Table, session *Session, bean interface{}, useCol bool,
 
 	for _, col := range table.Columns() {
 		if useCol && !col.IsVersion && !col.IsCreated && !col.IsUpdated {
-			if _, ok := getFlagForColumn(session.Statement.columnMap, col); !ok {
+			if _, ok := getFlagForColumn(session.statement.columnMap, col); !ok {
 				continue
 			}
 		}
@@ -542,6 +386,10 @@ func genCols(table *core.Table, session *Session, bean interface{}, useCol bool,
 				if len(fieldValue.String()) == 0 {
 					continue
 				}
+			case reflect.Ptr:
+				if fieldValue.Pointer() == 0 {
+					continue
+				}
 			}
 		}
 
@@ -549,28 +397,32 @@ func genCols(table *core.Table, session *Session, bean interface{}, useCol bool,
 			continue
 		}
 
-		if session.Statement.ColumnStr != "" {
-			if _, ok := getFlagForColumn(session.Statement.columnMap, col); !ok {
+		if session.statement.ColumnStr != "" {
+			if _, ok := getFlagForColumn(session.statement.columnMap, col); !ok {
+				continue
+			} else if _, ok := session.statement.incrColumns[col.Name]; ok {
+				continue
+			} else if _, ok := session.statement.decrColumns[col.Name]; ok {
 				continue
 			}
 		}
-		if session.Statement.OmitStr != "" {
-			if _, ok := getFlagForColumn(session.Statement.columnMap, col); ok {
+		if session.statement.OmitStr != "" {
+			if _, ok := getFlagForColumn(session.statement.columnMap, col); ok {
 				continue
 			}
 		}
 
 		// !evalphobia! set fieldValue as nil when column is nullable and zero-value
-		if _, ok := getFlagForColumn(session.Statement.nullableMap, col); ok {
+		if _, ok := getFlagForColumn(session.statement.nullableMap, col); ok {
 			if col.Nullable && isZero(fieldValue.Interface()) {
 				var nilValue *int
 				fieldValue = reflect.ValueOf(nilValue)
 			}
 		}
 
-		if (col.IsCreated || col.IsUpdated) && session.Statement.UseAutoTime /*&& isZero(fieldValue.Interface())*/ {
+		if (col.IsCreated || col.IsUpdated) && session.statement.UseAutoTime /*&& isZero(fieldValue.Interface())*/ {
 			// if time is non-empty, then set to auto time
-			val, t := session.Engine.NowTime2(col.SQLType.Name)
+			val, t := session.engine.nowTime(col)
 			args = append(args, val)
 
 			var colName = col.Name
@@ -578,7 +430,7 @@ func genCols(table *core.Table, session *Session, bean interface{}, useCol bool,
 				col := table.GetColumn(colName)
 				setColumnTime(bean, col, t)
 			})
-		} else if col.IsVersion && session.Statement.checkVersion {
+		} else if col.IsVersion && session.statement.checkVersion {
 			args = append(args, 1)
 		} else {
 			arg, err := session.value2Interface(col, fieldValue)
@@ -589,7 +441,7 @@ func genCols(table *core.Table, session *Session, bean interface{}, useCol bool,
 		}
 
 		if includeQuote {
-			colNames = append(colNames, session.Engine.Quote(col.Name)+" = ?")
+			colNames = append(colNames, session.engine.Quote(col.Name)+" = ?")
 		} else {
 			colNames = append(colNames, col.Name)
 		}
@@ -602,7 +454,6 @@ func indexName(tableName, idxName string) string {
 }
 
 func getFlagForColumn(m map[string]bool, col *core.Column) (val bool, has bool) {
-
 	if len(m) == 0 {
 		return false, false
 	}

vendor/github.com/go-xorm/xorm/helpler_time.go

@@ -0,0 +1,21 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import "time"
+
+const (
+	zeroTime0 = "0000-00-00 00:00:00"
+	zeroTime1 = "0001-01-01 00:00:00"
+)
+
+func formatTime(t time.Time) string {
+	return t.Format("2006-01-02 15:04:05")
+}
+
+func isTimeZero(t time.Time) bool {
+	return t.IsZero() || formatTime(t) == zeroTime0 ||
+		formatTime(t) == zeroTime1
+}

vendor/github.com/go-xorm/xorm/interface.go

@@ -0,0 +1,103 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import (
+	"database/sql"
+	"reflect"
+	"time"
+
+	"github.com/go-xorm/core"
+)
+
+// Interface defines the interface which Engine, EngineGroup and Session will implementate.
+type Interface interface {
+	AllCols() *Session
+	Alias(alias string) *Session
+	Asc(colNames ...string) *Session
+	BufferSize(size int) *Session
+	Cols(columns ...string) *Session
+	Count(...interface{}) (int64, error)
+	CreateIndexes(bean interface{}) error
+	CreateUniques(bean interface{}) error
+	Decr(column string, arg ...interface{}) *Session
+	Desc(...string) *Session
+	Delete(interface{}) (int64, error)
+	Distinct(columns ...string) *Session
+	DropIndexes(bean interface{}) error
+	Exec(string, ...interface{}) (sql.Result, error)
+	Exist(bean ...interface{}) (bool, error)
+	Find(interface{}, ...interface{}) error
+	Get(interface{}) (bool, error)
+	GroupBy(keys string) *Session
+	ID(interface{}) *Session
+	In(string, ...interface{}) *Session
+	Incr(column string, arg ...interface{}) *Session
+	Insert(...interface{}) (int64, error)
+	InsertOne(interface{}) (int64, error)
+	IsTableEmpty(bean interface{}) (bool, error)
+	IsTableExist(beanOrTableName interface{}) (bool, error)
+	Iterate(interface{}, IterFunc) error
+	Limit(int, ...int) *Session
+	NoAutoCondition(...bool) *Session
+	NotIn(string, ...interface{}) *Session
+	Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session
+	Omit(columns ...string) *Session
+	OrderBy(order string) *Session
+	Ping() error
+	Query(sqlOrAgrs ...interface{}) (resultsSlice []map[string][]byte, err error)
+	QueryInterface(sqlorArgs ...interface{}) ([]map[string]interface{}, error)
+	QueryString(sqlorArgs ...interface{}) ([]map[string]string, error)
+	Rows(bean interface{}) (*Rows, error)
+	SetExpr(string, string) *Session
+	SQL(interface{}, ...interface{}) *Session
+	Sum(bean interface{}, colName string) (float64, error)
+	SumInt(bean interface{}, colName string) (int64, error)
+	Sums(bean interface{}, colNames ...string) ([]float64, error)
+	SumsInt(bean interface{}, colNames ...string) ([]int64, error)
+	Table(tableNameOrBean interface{}) *Session
+	Unscoped() *Session
+	Update(bean interface{}, condiBeans ...interface{}) (int64, error)
+	UseBool(...string) *Session
+	Where(interface{}, ...interface{}) *Session
+}
+
+// EngineInterface defines the interface which Engine, EngineGroup will implementate.
+type EngineInterface interface {
+	Interface
+
+	Before(func(interface{})) *Session
+	Charset(charset string) *Session
+	CreateTables(...interface{}) error
+	DBMetas() ([]*core.Table, error)
+	Dialect() core.Dialect
+	DropTables(...interface{}) error
+	DumpAllToFile(fp string, tp ...core.DbType) error
+	GetColumnMapper() core.IMapper
+	GetDefaultCacher() core.Cacher
+	GetTableMapper() core.IMapper
+	GetTZDatabase() *time.Location
+	GetTZLocation() *time.Location
+	NewSession() *Session
+	NoAutoTime() *Session
+	Quote(string) string
+	SetDefaultCacher(core.Cacher)
+	SetLogLevel(core.LogLevel)
+	SetMapper(core.IMapper)
+	SetTZDatabase(tz *time.Location)
+	SetTZLocation(tz *time.Location)
+	ShowSQL(show ...bool)
+	Sync(...interface{}) error
+	Sync2(...interface{}) error
+	StoreEngine(storeEngine string) *Session
+	TableInfo(bean interface{}) *Table
+	UnMapType(reflect.Type)
+}
+
+var (
+	_ Interface       = &Session{}
+	_ EngineInterface = &Engine{}
+	_ EngineInterface = &EngineGroup{}
+)

vendor/github.com/go-xorm/xorm/processors.go

@@ -29,13 +29,6 @@ type AfterSetProcessor interface {
 	AfterSet(string, Cell)
 }
 
-// !nashtsai! TODO enable BeforeValidateProcessor when xorm start to support validations
-//// Executed before an object is validated
-//type BeforeValidateProcessor interface {
-//    BeforeValidate()
-//}
-// --
-
 // AfterInsertProcessor executed after an object is persisted to the database
 type AfterInsertProcessor interface {
 	AfterInsert()
@@ -50,3 +43,36 @@ type AfterUpdateProcessor interface {
 type AfterDeleteProcessor interface {
 	AfterDelete()
 }
+
+// AfterLoadProcessor executed after an ojbect has been loaded from database
+type AfterLoadProcessor interface {
+	AfterLoad()
+}
+
+// AfterLoadSessionProcessor executed after an ojbect has been loaded from database with session parameter
+type AfterLoadSessionProcessor interface {
+	AfterLoad(*Session)
+}
+
+type executedProcessorFunc func(*Session, interface{}) error
+
+type executedProcessor struct {
+	fun     executedProcessorFunc
+	session *Session
+	bean    interface{}
+}
+
+func (executor *executedProcessor) execute() error {
+	return executor.fun(executor.session, executor.bean)
+}
+
+func (session *Session) executeProcessors() error {
+	processors := session.afterProcessors
+	session.afterProcessors = make([]executedProcessor, 0)
+	for _, processor := range processors {
+		if err := processor.execute(); err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/github.com/go-xorm/xorm/rows.go

@@ -17,7 +17,6 @@ type Rows struct {
 	NoTypeCheck bool
 
 	session   *Session
-	stmt      *core.Stmt
 	rows      *core.Rows
 	fields    []string
 	beanType  reflect.Type
@@ -29,50 +28,33 @@ func newRows(session *Session, bean interface{}) (*Rows, error) {
 	rows.session = session
 	rows.beanType = reflect.Indirect(reflect.ValueOf(bean)).Type()
 
-	defer rows.session.resetStatement()
-
 	var sqlStr string
 	var args []interface{}
+	var err error
 
-	rows.session.Statement.setRefValue(rValue(bean))
-	if len(session.Statement.TableName()) <= 0 {
-		return nil, ErrTableNotFound
-	}
-
-	if rows.session.Statement.RawSQL == "" {
-		sqlStr, args = rows.session.Statement.genGetSQL(bean)
-	} else {
-		sqlStr = rows.session.Statement.RawSQL
-		args = rows.session.Statement.RawParams
+	if err = rows.session.statement.setRefValue(rValue(bean)); err != nil {
+		return nil, err
 	}
 
-	for _, filter := range rows.session.Engine.dialect.Filters() {
-		sqlStr = filter.Do(sqlStr, session.Engine.dialect, rows.session.Statement.RefTable)
+	if len(session.statement.TableName()) <= 0 {
+		return nil, ErrTableNotFound
 	}
 
-	rows.session.saveLastSQL(sqlStr, args...)
-	var err error
-	if rows.session.prepareStmt {
-		rows.stmt, err = rows.session.DB().Prepare(sqlStr)
-		if err != nil {
-			rows.lastError = err
-			rows.Close()
-			return nil, err
-		}
-
-		rows.rows, err = rows.stmt.Query(args...)
+	if rows.session.statement.RawSQL == "" {
+		sqlStr, args, err = rows.session.statement.genGetSQL(bean)
 		if err != nil {
-			rows.lastError = err
-			rows.Close()
 			return nil, err
 		}
 	} else {
-		rows.rows, err = rows.session.DB().Query(sqlStr, args...)
-		if err != nil {
-			rows.lastError = err
-			rows.Close()
-			return nil, err
-		}
+		sqlStr = rows.session.statement.RawSQL
+		args = rows.session.statement.RawParams
+	}
+
+	rows.rows, err = rows.session.queryRows(sqlStr, args...)
+	if err != nil {
+		rows.lastError = err
+		rows.Close()
+		return nil, err
 	}
 
 	rows.fields, err = rows.rows.Columns()
@@ -113,15 +95,26 @@ func (rows *Rows) Scan(bean interface{}) error {
 	}
 
 	dataStruct := rValue(bean)
-	rows.session.Statement.setRefValue(dataStruct)
-	_, err := rows.session.row2Bean(rows.rows, rows.fields, len(rows.fields), bean, &dataStruct, rows.session.Statement.RefTable)
+	if err := rows.session.statement.setRefValue(dataStruct); err != nil {
+		return err
+	}
 
-	return err
+	scanResults, err := rows.session.row2Slice(rows.rows, rows.fields, bean)
+	if err != nil {
+		return err
+	}
+
+	_, err = rows.session.slice2Bean(scanResults, rows.fields, bean, &dataStruct, rows.session.statement.RefTable)
+	if err != nil {
+		return err
+	}
+
+	return rows.session.executeProcessors()
 }
 
 // Close session if session.IsAutoClose is true, and claimed any opened resources
 func (rows *Rows) Close() error {
-	if rows.session.IsAutoClose {
+	if rows.session.isAutoClose {
 		defer rows.session.Close()
 	}
 
@@ -129,17 +122,10 @@ func (rows *Rows) Close() error {
 		if rows.rows != nil {
 			rows.lastError = rows.rows.Close()
 			if rows.lastError != nil {
-				defer rows.stmt.Close()
 				return rows.lastError
 			}
 		}
-		if rows.stmt != nil {
-			rows.lastError = rows.stmt.Close()
-		}
 	} else {
-		if rows.stmt != nil {
-			defer rows.stmt.Close()
-		}
 		if rows.rows != nil {
 			defer rows.rows.Close()
 		}

vendor/github.com/go-xorm/xorm/session.go

@@ -11,7 +11,6 @@ import (
 	"fmt"
 	"hash/crc32"
 	"reflect"
-	"strconv"
 	"strings"
 	"time"
 
@@ -22,17 +21,16 @@ import (
 // kind of database operations.
 type Session struct {
 	db                     *core.DB
-	Engine                 *Engine
-	Tx                     *core.Tx
-	Statement              Statement
-	IsAutoCommit           bool
-	IsCommitedOrRollbacked bool
-	TransType              string
-	IsAutoClose            bool
+	engine                 *Engine
+	tx                     *core.Tx
+	statement              Statement
+	isAutoCommit           bool
+	isCommitedOrRollbacked bool
+	isAutoClose            bool
 
 	// Automatically reset the statement after operations that execute a SQL
 	// query such as Count(), Find(), Get(), ...
-	AutoResetStatement bool
+	autoResetStatement bool
 
 	// !nashtsai! storing these beans due to yet committed tx
 	afterInsertBeans map[interface{}]*[]func(interface{})
@@ -43,14 +41,17 @@ type Session struct {
 	beforeClosures []func(interface{})
 	afterClosures  []func(interface{})
 
+	afterProcessors []executedProcessor
+
 	prepareStmt bool
 	stmtCache   map[uint32]*core.Stmt //key: hash.Hash32 of (queryStr, len(queryStr))
-	cascadeDeep int
 
 	// !evalphobia! stored the last executed query on this session
 	//beforeSQLExec func(string, ...interface{})
 	lastSQL     string
 	lastSQLArgs []interface{}
+
+	err error
 }
 
 // Clone copy all the session's content and return a new session
@@ -61,12 +62,12 @@ func (session *Session) Clone() *Session {
 
 // Init reset the session as the init status.
 func (session *Session) Init() {
-	session.Statement.Init()
-	session.Statement.Engine = session.Engine
-	session.IsAutoCommit = true
-	session.IsCommitedOrRollbacked = false
-	session.IsAutoClose = false
-	session.AutoResetStatement = true
+	session.statement.Init()
+	session.statement.Engine = session.engine
+	session.isAutoCommit = true
+	session.isCommitedOrRollbacked = false
+	session.isAutoClose = false
+	session.autoResetStatement = true
 	session.prepareStmt = false
 
 	// !nashtsai! is lazy init better?
@@ -75,6 +76,9 @@ func (session *Session) Init() {
 	session.afterDeleteBeans = make(map[interface{}]*[]func(interface{}), 0)
 	session.beforeClosures = make([]func(interface{}), 0)
 	session.afterClosures = make([]func(interface{}), 0)
+	session.stmtCache = make(map[uint32]*core.Stmt)
+
+	session.afterProcessors = make([]executedProcessor, 0)
 
 	session.lastSQL = ""
 	session.lastSQLArgs = []interface{}{}
@@ -89,19 +93,23 @@ func (session *Session) Close() {
 	if session.db != nil {
 		// When Close be called, if session is a transaction and do not call
 		// Commit or Rollback, then call Rollback.
-		if session.Tx != nil && !session.IsCommitedOrRollbacked {
+		if session.tx != nil && !session.isCommitedOrRollbacked {
 			session.Rollback()
 		}
-		session.Tx = nil
+		session.tx = nil
 		session.stmtCache = nil
-		session.Init()
 		session.db = nil
 	}
 }
 
+// IsClosed returns if session is closed
+func (session *Session) IsClosed() bool {
+	return session.db == nil
+}
+
 func (session *Session) resetStatement() {
-	if session.AutoResetStatement {
-		session.Statement.Init()
+	if session.autoResetStatement {
+		session.statement.Init()
 	}
 }
 
@@ -129,75 +137,75 @@ func (session *Session) After(closures func(interface{})) *Session {
 
 // Table can input a string or pointer to struct for special a table to operate.
 func (session *Session) Table(tableNameOrBean interface{}) *Session {
-	session.Statement.Table(tableNameOrBean)
+	session.statement.Table(tableNameOrBean)
 	return session
 }
 
 // Alias set the table alias
 func (session *Session) Alias(alias string) *Session {
-	session.Statement.Alias(alias)
+	session.statement.Alias(alias)
 	return session
 }
 
 // NoCascade indicate that no cascade load child object
 func (session *Session) NoCascade() *Session {
-	session.Statement.UseCascade = false
+	session.statement.UseCascade = false
 	return session
 }
 
 // ForUpdate Set Read/Write locking for UPDATE
 func (session *Session) ForUpdate() *Session {
-	session.Statement.IsForUpdate = true
+	session.statement.IsForUpdate = true
 	return session
 }
 
 // NoAutoCondition disable generate SQL condition from beans
 func (session *Session) NoAutoCondition(no ...bool) *Session {
-	session.Statement.NoAutoCondition(no...)
+	session.statement.NoAutoCondition(no...)
 	return session
 }
 
 // Limit provide limit and offset query condition
 func (session *Session) Limit(limit int, start ...int) *Session {
-	session.Statement.Limit(limit, start...)
+	session.statement.Limit(limit, start...)
 	return session
 }
 
 // OrderBy provide order by query condition, the input parameter is the content
 // after order by on a sql statement.
 func (session *Session) OrderBy(order string) *Session {
-	session.Statement.OrderBy(order)
+	session.statement.OrderBy(order)
 	return session
 }
 
 // Desc provide desc order by query condition, the input parameters are columns.
 func (session *Session) Desc(colNames ...string) *Session {
-	session.Statement.Desc(colNames...)
+	session.statement.Desc(colNames...)
 	return session
 }
 
 // Asc provide asc order by query condition, the input parameters are columns.
 func (session *Session) Asc(colNames ...string) *Session {
-	session.Statement.Asc(colNames...)
+	session.statement.Asc(colNames...)
 	return session
 }
 
 // StoreEngine is only avialble mysql dialect currently
 func (session *Session) StoreEngine(storeEngine string) *Session {
-	session.Statement.StoreEngine = storeEngine
+	session.statement.StoreEngine = storeEngine
 	return session
 }
 
 // Charset is only avialble mysql dialect currently
 func (session *Session) Charset(charset string) *Session {
-	session.Statement.Charset = charset
+	session.statement.Charset = charset
 	return session
 }
 
 // Cascade indicates if loading sub Struct
 func (session *Session) Cascade(trueOrFalse ...bool) *Session {
 	if len(trueOrFalse) >= 1 {
-		session.Statement.UseCascade = trueOrFalse[0]
+		session.statement.UseCascade = trueOrFalse[0]
 	}
 	return session
 }
@@ -205,32 +213,32 @@ func (session *Session) Cascade(trueOrFalse ...bool) *Session {
 // NoCache ask this session do not retrieve data from cache system and
 // get data from database directly.
 func (session *Session) NoCache() *Session {
-	session.Statement.UseCache = false
+	session.statement.UseCache = false
 	return session
 }
 
 // Join join_operator should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
 func (session *Session) Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session {
-	session.Statement.Join(joinOperator, tablename, condition, args...)
+	session.statement.Join(joinOperator, tablename, condition, args...)
 	return session
 }
 
 // GroupBy Generate Group By statement
 func (session *Session) GroupBy(keys string) *Session {
-	session.Statement.GroupBy(keys)
+	session.statement.GroupBy(keys)
 	return session
 }
 
 // Having Generate Having statement
 func (session *Session) Having(conditions string) *Session {
-	session.Statement.Having(conditions)
+	session.statement.Having(conditions)
 	return session
 }
 
 // DB db return the wrapper of sql.DB
 func (session *Session) DB() *core.DB {
 	if session.db == nil {
-		session.db = session.Engine.db
+		session.db = session.engine.db
 		session.stmtCache = make(map[uint32]*core.Stmt, 0)
 	}
 	return session.db
@@ -243,25 +251,25 @@ func cleanupProcessorsClosures(slices *[]func(interface{})) {
 }
 
 func (session *Session) canCache() bool {
-	if session.Statement.RefTable == nil ||
-		session.Statement.JoinStr != "" ||
-		session.Statement.RawSQL != "" ||
-		!session.Statement.UseCache ||
-		session.Statement.IsForUpdate ||
-		session.Tx != nil ||
-		len(session.Statement.selectStr) > 0 {
+	if session.statement.RefTable == nil ||
+		session.statement.JoinStr != "" ||
+		session.statement.RawSQL != "" ||
+		!session.statement.UseCache ||
+		session.statement.IsForUpdate ||
+		session.tx != nil ||
+		len(session.statement.selectStr) > 0 {
 		return false
 	}
 	return true
 }
 
-func (session *Session) doPrepare(sqlStr string) (stmt *core.Stmt, err error) {
+func (session *Session) doPrepare(db *core.DB, sqlStr string) (stmt *core.Stmt, err error) {
 	crc := crc32.ChecksumIEEE([]byte(sqlStr))
 	// TODO try hash(sqlStr+len(sqlStr))
 	var has bool
 	stmt, has = session.stmtCache[crc]
 	if !has {
-		stmt, err = session.DB().Prepare(sqlStr)
+		stmt, err = db.Prepare(sqlStr)
 		if err != nil {
 			return nil, err
 		}
@@ -273,18 +281,18 @@ func (session *Session) doPrepare(sqlStr string) (stmt *core.Stmt, err error) {
 func (session *Session) getField(dataStruct *reflect.Value, key string, table *core.Table, idx int) *reflect.Value {
 	var col *core.Column
 	if col = table.GetColumnIdx(key, idx); col == nil {
-		//session.Engine.logger.Warnf("table %v has no column %v. %v", table.Name, key, table.ColumnsSeq())
+		//session.engine.logger.Warnf("table %v has no column %v. %v", table.Name, key, table.ColumnsSeq())
 		return nil
 	}
 
 	fieldValue, err := col.ValueOfV(dataStruct)
 	if err != nil {
-		session.Engine.logger.Error(err)
+		session.engine.logger.Error(err)
 		return nil
 	}
 
 	if !fieldValue.IsValid() || !fieldValue.CanSet() {
-		session.Engine.logger.Warnf("table %v's column %v is not valid or cannot set", table.Name, key)
+		session.engine.logger.Warnf("table %v's column %v is not valid or cannot set", table.Name, key)
 		return nil
 	}
 	return fieldValue
@@ -293,28 +301,40 @@ func (session *Session) getField(dataStruct *reflect.Value, key string, table *c
 // Cell cell is a result of one column field
 type Cell *interface{}
 
-func (session *Session) rows2Beans(rows *core.Rows, fields []string, fieldsCount int,
+func (session *Session) rows2Beans(rows *core.Rows, fields []string,
 	table *core.Table, newElemFunc func([]string) reflect.Value,
 	sliceValueSetFunc func(*reflect.Value, core.PK) error) error {
 	for rows.Next() {
 		var newValue = newElemFunc(fields)
 		bean := newValue.Interface()
-		dataStruct := rValue(bean)
-		pk, err := session.row2Bean(rows, fields, fieldsCount, bean, &dataStruct, table)
+		dataStruct := newValue.Elem()
+
+		// handle beforeClosures
+		scanResults, err := session.row2Slice(rows, fields, bean)
 		if err != nil {
 			return err
 		}
-
-		err = sliceValueSetFunc(&newValue, pk)
+		pk, err := session.slice2Bean(scanResults, fields, bean, &dataStruct, table)
 		if err != nil {
 			return err
 		}
+		session.afterProcessors = append(session.afterProcessors, executedProcessor{
+			fun: func(*Session, interface{}) error {
+				return sliceValueSetFunc(&newValue, pk)
+			},
+			session: session,
+			bean:    bean,
+		})
 	}
 	return nil
 }
 
-func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount int, bean interface{}, dataStruct *reflect.Value, table *core.Table) (core.PK, error) {
-	scanResults := make([]interface{}, fieldsCount)
+func (session *Session) row2Slice(rows *core.Rows, fields []string, bean interface{}) ([]interface{}, error) {
+	for _, closure := range session.beforeClosures {
+		closure(bean)
+	}
+
+	scanResults := make([]interface{}, len(fields))
 	for i := 0; i < len(fields); i++ {
 		var cell interface{}
 		scanResults[i] = &cell
@@ -328,7 +348,10 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 			b.BeforeSet(key, Cell(scanResults[ii].(*interface{})))
 		}
 	}
+	return scanResults, nil
+}
 
+func (session *Session) slice2Bean(scanResults []interface{}, fields []string, bean interface{}, dataStruct *reflect.Value, table *core.Table) (core.PK, error) {
 	defer func() {
 		if b, hasAfterSet := bean.(AfterSetProcessor); hasAfterSet {
 			for ii, key := range fields {
@@ -337,6 +360,40 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 		}
 	}()
 
+	// handle afterClosures
+	for _, closure := range session.afterClosures {
+		session.afterProcessors = append(session.afterProcessors, executedProcessor{
+			fun: func(sess *Session, bean interface{}) error {
+				closure(bean)
+				return nil
+			},
+			session: session,
+			bean:    bean,
+		})
+	}
+
+	if a, has := bean.(AfterLoadProcessor); has {
+		session.afterProcessors = append(session.afterProcessors, executedProcessor{
+			fun: func(sess *Session, bean interface{}) error {
+				a.AfterLoad()
+				return nil
+			},
+			session: session,
+			bean:    bean,
+		})
+	}
+
+	if a, has := bean.(AfterLoadSessionProcessor); has {
+		session.afterProcessors = append(session.afterProcessors, executedProcessor{
+			fun: func(sess *Session, bean interface{}) error {
+				a.AfterLoad(sess)
+				return nil
+			},
+			session: session,
+			bean:    bean,
+		})
+	}
+
 	var tempMap = make(map[string]int)
 	var pk core.PK
 	for ii, key := range fields {
@@ -361,9 +418,11 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 			if fieldValue.CanAddr() {
 				if structConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
 					if data, err := value2Bytes(&rawValue); err == nil {
-						structConvert.FromDB(data)
+						if err := structConvert.FromDB(data); err != nil {
+							return nil, err
+						}
 					} else {
-						session.Engine.logger.Error(err)
+						return nil, err
 					}
 					continue
 				}
@@ -376,7 +435,7 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 					}
 					fieldValue.Interface().(core.Conversion).FromDB(data)
 				} else {
-					session.Engine.logger.Error(err)
+					return nil, err
 				}
 				continue
 			}
@@ -403,17 +462,19 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 				hasAssigned = true
 
 				if len(bs) > 0 {
+					if fieldType.Kind() == reflect.String {
+						fieldValue.SetString(string(bs))
+						continue
+					}
 					if fieldValue.CanAddr() {
 						err := json.Unmarshal(bs, fieldValue.Addr().Interface())
 						if err != nil {
-							session.Engine.logger.Error(key, err)
 							return nil, err
 						}
 					} else {
 						x := reflect.New(fieldType)
 						err := json.Unmarshal(bs, x.Interface())
 						if err != nil {
-							session.Engine.logger.Error(key, err)
 							return nil, err
 						}
 						fieldValue.Set(x.Elem())
@@ -438,14 +499,12 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 					if fieldValue.CanAddr() {
 						err := json.Unmarshal(bs, fieldValue.Addr().Interface())
 						if err != nil {
-							session.Engine.logger.Error(err)
 							return nil, err
 						}
 					} else {
 						x := reflect.New(fieldType)
 						err := json.Unmarshal(bs, x.Interface())
 						if err != nil {
-							session.Engine.logger.Error(err)
 							return nil, err
 						}
 						fieldValue.Set(x.Elem())
@@ -462,14 +521,19 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 								x := reflect.New(fieldType)
 								err := json.Unmarshal(vv.Bytes(), x.Interface())
 								if err != nil {
-									session.Engine.logger.Error(err)
 									return nil, err
 								}
 								fieldValue.Set(x.Elem())
 							} else {
-								for i := 0; i < fieldValue.Len(); i++ {
-									if i < vv.Len() {
-										fieldValue.Index(i).Set(vv.Index(i))
+								if fieldValue.Len() > 0 {
+									for i := 0; i < fieldValue.Len(); i++ {
+										if i < vv.Len() {
+											fieldValue.Index(i).Set(vv.Index(i))
+										}
+									}
+								} else {
+									for i := 0; i < vv.Len(); i++ {
+										fieldValue.Set(reflect.Append(*fieldValue, vv.Index(i)))
 									}
 								}
 							}
@@ -509,57 +573,38 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 				}
 			case reflect.Struct:
 				if fieldType.ConvertibleTo(core.TimeType) {
+					dbTZ := session.engine.DatabaseTZ
+					if col.TimeZone != nil {
+						dbTZ = col.TimeZone
+					}
+
 					if rawValueType == core.TimeType {
 						hasAssigned = true
 
 						t := vv.Convert(core.TimeType).Interface().(time.Time)
 
 						z, _ := t.Zone()
-						dbTZ := session.Engine.DatabaseTZ
-						if dbTZ == nil {
-							if session.Engine.dialect.DBType() == core.SQLITE {
-								dbTZ = time.UTC
-							} else {
-								dbTZ = time.Local
-							}
-						}
-
 						// set new location if database don't save timezone or give an incorrect timezone
 						if len(z) == 0 || t.Year() == 0 || t.Location().String() != dbTZ.String() { // !nashtsai! HACK tmp work around for lib/pq doesn't properly time with location
-							session.Engine.logger.Debugf("empty zone key[%v] : %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
+							session.engine.logger.Debugf("empty zone key[%v] : %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
 							t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(),
 								t.Minute(), t.Second(), t.Nanosecond(), dbTZ)
 						}
 
-						// !nashtsai! convert to engine location
-						if col.TimeZone == nil {
-							t = t.In(session.Engine.TZLocation)
-						} else {
-							t = t.In(col.TimeZone)
-						}
+						t = t.In(session.engine.TZLocation)
 						fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
-
-						// t = fieldValue.Interface().(time.Time)
-						// z, _ = t.Zone()
-						// session.Engine.LogDebug("fieldValue key[%v]: %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
 					} else if rawValueType == core.IntType || rawValueType == core.Int64Type ||
 						rawValueType == core.Int32Type {
 						hasAssigned = true
-						var tz *time.Location
-						if col.TimeZone == nil {
-							tz = session.Engine.TZLocation
-						} else {
-							tz = col.TimeZone
-						}
-						t := time.Unix(vv.Int(), 0).In(tz)
-						//vv = reflect.ValueOf(t)
+
+						t := time.Unix(vv.Int(), 0).In(session.engine.TZLocation)
 						fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
 					} else {
 						if d, ok := vv.Interface().([]uint8); ok {
 							hasAssigned = true
 							t, err := session.byte2Time(col, d)
 							if err != nil {
-								session.Engine.logger.Error("byte2Time error:", err.Error())
+								session.engine.logger.Error("byte2Time error:", err.Error())
 								hasAssigned = false
 							} else {
 								fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
@@ -568,20 +613,20 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 							hasAssigned = true
 							t, err := session.str2Time(col, d)
 							if err != nil {
-								session.Engine.logger.Error("byte2Time error:", err.Error())
+								session.engine.logger.Error("byte2Time error:", err.Error())
 								hasAssigned = false
 							} else {
 								fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
 							}
 						} else {
-							panic(fmt.Sprintf("rawValueType is %v, value is %v", rawValueType, vv.Interface()))
+							return nil, fmt.Errorf("rawValueType is %v, value is %v", rawValueType, vv.Interface())
 						}
 					}
 				} else if nulVal, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
 					// !<winxxp>! 增加支持sql.Scanner接口的结构，如sql.NullString
 					hasAssigned = true
 					if err := nulVal.Scan(vv.Interface()); err != nil {
-						session.Engine.logger.Error("sql.Sanner error:", err.Error())
+						session.engine.logger.Error("sql.Sanner error:", err.Error())
 						hasAssigned = false
 					}
 				} else if col.SQLType.IsJson() {
@@ -591,7 +636,6 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 						if len([]byte(vv.String())) > 0 {
 							err := json.Unmarshal([]byte(vv.String()), x.Interface())
 							if err != nil {
-								session.Engine.logger.Error(err)
 								return nil, err
 							}
 							fieldValue.Set(x.Elem())
@@ -602,76 +646,45 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 						if len(vv.Bytes()) > 0 {
 							err := json.Unmarshal(vv.Bytes(), x.Interface())
 							if err != nil {
-								session.Engine.logger.Error(err)
 								return nil, err
 							}
 							fieldValue.Set(x.Elem())
 						}
 					}
-				} else if session.Statement.UseCascade {
-					table := session.Engine.autoMapType(*fieldValue)
-					if table != nil {
-						hasAssigned = true
-						if len(table.PrimaryKeys) != 1 {
-							panic("unsupported non or composited primary key cascade")
-						}
-						var pk = make(core.PK, len(table.PrimaryKeys))
-
-						switch rawValueType.Kind() {
-						case reflect.Int64:
-							pk[0] = vv.Int()
-						case reflect.Int:
-							pk[0] = int(vv.Int())
-						case reflect.Int32:
-							pk[0] = int32(vv.Int())
-						case reflect.Int16:
-							pk[0] = int16(vv.Int())
-						case reflect.Int8:
-							pk[0] = int8(vv.Int())
-						case reflect.Uint64:
-							pk[0] = vv.Uint()
-						case reflect.Uint:
-							pk[0] = uint(vv.Uint())
-						case reflect.Uint32:
-							pk[0] = uint32(vv.Uint())
-						case reflect.Uint16:
-							pk[0] = uint16(vv.Uint())
-						case reflect.Uint8:
-							pk[0] = uint8(vv.Uint())
-						case reflect.String:
-							pk[0] = vv.String()
-						case reflect.Slice:
-							pk[0], _ = strconv.ParseInt(string(rawValue.Interface().([]byte)), 10, 64)
-						default:
-							panic(fmt.Sprintf("unsupported primary key type: %v, %v", rawValueType, fieldValue))
-						}
+				} else if session.statement.UseCascade {
+					table, err := session.engine.autoMapType(*fieldValue)
+					if err != nil {
+						return nil, err
+					}
 
-						if !isPKZero(pk) {
-							// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
-							// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
-							// property to be fetched lazily
-							structInter := reflect.New(fieldValue.Type())
-							newsession := session.Engine.NewSession()
-							defer newsession.Close()
-							has, err := newsession.Id(pk).NoCascade().Get(structInter.Interface())
-							if err != nil {
-								return nil, err
-							}
-							if has {
-								//v := structInter.Elem().Interface()
-								//fieldValue.Set(reflect.ValueOf(v))
-								fieldValue.Set(structInter.Elem())
-							} else {
-								return nil, errors.New("cascade obj is not exist")
-							}
+					hasAssigned = true
+					if len(table.PrimaryKeys) != 1 {
+						return nil, errors.New("unsupported non or composited primary key cascade")
+					}
+					var pk = make(core.PK, len(table.PrimaryKeys))
+					pk[0], err = asKind(vv, rawValueType)
+					if err != nil {
+						return nil, err
+					}
+
+					if !isPKZero(pk) {
+						// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
+						// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
+						// property to be fetched lazily
+						structInter := reflect.New(fieldValue.Type())
+						has, err := session.ID(pk).NoCascade().get(structInter.Interface())
+						if err != nil {
+							return nil, err
+						}
+						if has {
+							fieldValue.Set(structInter.Elem())
+						} else {
+							return nil, errors.New("cascade obj is not exist")
 						}
-					} else {
-						session.Engine.logger.Error("unsupported struct type in Scan: ", fieldValue.Type().String())
 					}
 				}
 			case reflect.Ptr:
 				// !nashtsai! TODO merge duplicated codes above
-				//typeStr := fieldType.String()
 				switch fieldType {
 				// following types case matching ptr's native type, therefore assign ptr directly
 				case core.PtrStringType:
@@ -769,10 +782,9 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 					if len([]byte(vv.String())) > 0 {
 						err := json.Unmarshal([]byte(vv.String()), &x)
 						if err != nil {
-							session.Engine.logger.Error(err)
-						} else {
-							fieldValue.Set(reflect.ValueOf(&x))
+							return nil, err
 						}
+						fieldValue.Set(reflect.ValueOf(&x))
 					}
 					hasAssigned = true
 				case core.Complex128Type:
@@ -780,24 +792,23 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 					if len([]byte(vv.String())) > 0 {
 						err := json.Unmarshal([]byte(vv.String()), &x)
 						if err != nil {
-							session.Engine.logger.Error(err)
-						} else {
-							fieldValue.Set(reflect.ValueOf(&x))
+							return nil, err
 						}
+						fieldValue.Set(reflect.ValueOf(&x))
 					}
 					hasAssigned = true
 				} // switch fieldType
-				// default:
-				// 	session.Engine.LogError("unsupported type in Scan: ", reflect.TypeOf(v).String())
 			} // switch fieldType.Kind()
 
 			// !nashtsai! for value can't be assigned directly fallback to convert to []byte then back to value
 			if !hasAssigned {
 				data, err := value2Bytes(&rawValue)
-				if err == nil {
-					session.bytes2Value(col, fieldValue, data)
-				} else {
-					session.Engine.logger.Error(err.Error())
+				if err != nil {
+					return nil, err
+				}
+
+				if err = session.bytes2Value(col, fieldValue, data); err != nil {
+					return nil, err
 				}
 			}
 		}
@@ -805,19 +816,11 @@ func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount i
 	return pk, nil
 }
 
-func (session *Session) queryPreprocess(sqlStr *string, paramStr ...interface{}) {
-	for _, filter := range session.Engine.dialect.Filters() {
-		*sqlStr = filter.Do(*sqlStr, session.Engine.dialect, session.Statement.RefTable)
-	}
-
-	session.saveLastSQL(*sqlStr, paramStr...)
-}
-
 // saveLastSQL stores executed query information
 func (session *Session) saveLastSQL(sql string, args ...interface{}) {
 	session.lastSQL = sql
 	session.lastSQLArgs = args
-	session.Engine.logSQL(sql, args...)
+	session.engine.logSQL(sql, args...)
 }
 
 // LastSQL returns last query information
@@ -827,8 +830,8 @@ func (session *Session) LastSQL() (string, []interface{}) {
 
 // tbName get some table's table name
 func (session *Session) tbNameNoSchema(table *core.Table) string {
-	if len(session.Statement.AltTableName) > 0 {
-		return session.Statement.AltTableName
+	if len(session.statement.AltTableName) > 0 {
+		return session.statement.AltTableName
 	}
 
 	return table.Name
@@ -836,6 +839,6 @@ func (session *Session) tbNameNoSchema(table *core.Table) string {
 
 // Unscoped always disable struct tag "deleted"
 func (session *Session) Unscoped() *Session {
-	session.Statement.Unscoped()
+	session.statement.Unscoped()
 	return session
 }

vendor/github.com/go-xorm/xorm/session_cols.go

@@ -6,43 +6,43 @@ package xorm
 
 // Incr provides a query string like "count = count + 1"
 func (session *Session) Incr(column string, arg ...interface{}) *Session {
-	session.Statement.Incr(column, arg...)
+	session.statement.Incr(column, arg...)
 	return session
 }
 
 // Decr provides a query string like "count = count - 1"
 func (session *Session) Decr(column string, arg ...interface{}) *Session {
-	session.Statement.Decr(column, arg...)
+	session.statement.Decr(column, arg...)
 	return session
 }
 
 // SetExpr provides a query string like "column = {expression}"
 func (session *Session) SetExpr(column string, expression string) *Session {
-	session.Statement.SetExpr(column, expression)
+	session.statement.SetExpr(column, expression)
 	return session
 }
 
 // Select provides some columns to special
 func (session *Session) Select(str string) *Session {
-	session.Statement.Select(str)
+	session.statement.Select(str)
 	return session
 }
 
 // Cols provides some columns to special
 func (session *Session) Cols(columns ...string) *Session {
-	session.Statement.Cols(columns...)
+	session.statement.Cols(columns...)
 	return session
 }
 
 // AllCols ask all columns
 func (session *Session) AllCols() *Session {
-	session.Statement.AllCols()
+	session.statement.AllCols()
 	return session
 }
 
 // MustCols specify some columns must use even if they are empty
 func (session *Session) MustCols(columns ...string) *Session {
-	session.Statement.MustCols(columns...)
+	session.statement.MustCols(columns...)
 	return session
 }
 
@@ -52,7 +52,7 @@ func (session *Session) MustCols(columns ...string) *Session {
 // If no parameters, it will use all the bool field of struct, or
 // it will use parameters's columns
 func (session *Session) UseBool(columns ...string) *Session {
-	session.Statement.UseBool(columns...)
+	session.statement.UseBool(columns...)
 	return session
 }
 
@@ -60,25 +60,25 @@ func (session *Session) UseBool(columns ...string) *Session {
 // distinct will not be cached because cache system need id,
 // but distinct will not provide id
 func (session *Session) Distinct(columns ...string) *Session {
-	session.Statement.Distinct(columns...)
+	session.statement.Distinct(columns...)
 	return session
 }
 
 // Omit Only not use the parameters as select or update columns
 func (session *Session) Omit(columns ...string) *Session {
-	session.Statement.Omit(columns...)
+	session.statement.Omit(columns...)
 	return session
 }
 
 // Nullable Set null when column is zero-value and nullable for update
 func (session *Session) Nullable(columns ...string) *Session {
-	session.Statement.Nullable(columns...)
+	session.statement.Nullable(columns...)
 	return session
 }
 
 // NoAutoTime means do not automatically give created field and updated field
 // the current time on the current session temporarily
 func (session *Session) NoAutoTime() *Session {
-	session.Statement.UseAutoTime = false
+	session.statement.UseAutoTime = false
 	return session
 }

vendor/github.com/go-xorm/xorm/session_cond.go

@@ -17,25 +17,25 @@ func (session *Session) Sql(query string, args ...interface{}) *Session {
 // SQL provides raw sql input parameter. When you have a complex SQL statement
 // and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
 func (session *Session) SQL(query interface{}, args ...interface{}) *Session {
-	session.Statement.SQL(query, args...)
+	session.statement.SQL(query, args...)
 	return session
 }
 
 // Where provides custom query condition.
 func (session *Session) Where(query interface{}, args ...interface{}) *Session {
-	session.Statement.Where(query, args...)
+	session.statement.Where(query, args...)
 	return session
 }
 
 // And provides custom query condition.
 func (session *Session) And(query interface{}, args ...interface{}) *Session {
-	session.Statement.And(query, args...)
+	session.statement.And(query, args...)
 	return session
 }
 
 // Or provides custom query condition.
 func (session *Session) Or(query interface{}, args ...interface{}) *Session {
-	session.Statement.Or(query, args...)
+	session.statement.Or(query, args...)
 	return session
 }
 
@@ -48,23 +48,23 @@ func (session *Session) Id(id interface{}) *Session {
 
 // ID provides converting id as a query condition
 func (session *Session) ID(id interface{}) *Session {
-	session.Statement.ID(id)
+	session.statement.ID(id)
 	return session
 }
 
 // In provides a query string like "id in (1, 2, 3)"
 func (session *Session) In(column string, args ...interface{}) *Session {
-	session.Statement.In(column, args...)
+	session.statement.In(column, args...)
 	return session
 }
 
 // NotIn provides a query string like "id in (1, 2, 3)"
 func (session *Session) NotIn(column string, args ...interface{}) *Session {
-	session.Statement.NotIn(column, args...)
+	session.statement.NotIn(column, args...)
 	return session
 }
 
-// Conds returns session query conditions
+// Conds returns session query conditions except auto bean conditions
 func (session *Session) Conds() builder.Cond {
-	return session.Statement.cond
+	return session.statement.cond
 }

vendor/github.com/go-xorm/xorm/session_convert.go

@@ -23,41 +23,38 @@ func (session *Session) str2Time(col *core.Column, data string) (outTime time.Ti
 	var x time.Time
 	var err error
 
-	if sdata == "0000-00-00 00:00:00" ||
-		sdata == "0001-01-01 00:00:00" {
+	var parseLoc = session.engine.DatabaseTZ
+	if col.TimeZone != nil {
+		parseLoc = col.TimeZone
+	}
+
+	if sdata == zeroTime0 || sdata == zeroTime1 {
 	} else if !strings.ContainsAny(sdata, "- :") { // !nashtsai! has only found that mymysql driver is using this for time type column
 		// time stamp
 		sd, err := strconv.ParseInt(sdata, 10, 64)
 		if err == nil {
 			x = time.Unix(sd, 0)
-			// !nashtsai! HACK mymysql driver is causing Local location being change to CHAT and cause wrong time conversion
-			if col.TimeZone == nil {
-				x = x.In(session.Engine.TZLocation)
-			} else {
-				x = x.In(col.TimeZone)
-			}
-			session.Engine.logger.Debugf("time(0) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+			//session.engine.logger.Debugf("time(0) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 		} else {
-			session.Engine.logger.Debugf("time(0) err key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+			//session.engine.logger.Debugf("time(0) err key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 		}
 	} else if len(sdata) > 19 && strings.Contains(sdata, "-") {
-		x, err = time.ParseInLocation(time.RFC3339Nano, sdata, session.Engine.TZLocation)
-		session.Engine.logger.Debugf("time(1) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+		x, err = time.ParseInLocation(time.RFC3339Nano, sdata, parseLoc)
+		session.engine.logger.Debugf("time(1) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 		if err != nil {
-			x, err = time.ParseInLocation("2006-01-02 15:04:05.999999999", sdata, session.Engine.TZLocation)
-			session.Engine.logger.Debugf("time(2) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+			x, err = time.ParseInLocation("2006-01-02 15:04:05.999999999", sdata, parseLoc)
+			//session.engine.logger.Debugf("time(2) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 		}
 		if err != nil {
-			x, err = time.ParseInLocation("2006-01-02 15:04:05.9999999 Z07:00", sdata, session.Engine.TZLocation)
-			session.Engine.logger.Debugf("time(3) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+			x, err = time.ParseInLocation("2006-01-02 15:04:05.9999999 Z07:00", sdata, parseLoc)
+			//session.engine.logger.Debugf("time(3) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 		}
-
 	} else if len(sdata) == 19 && strings.Contains(sdata, "-") {
-		x, err = time.ParseInLocation("2006-01-02 15:04:05", sdata, session.Engine.TZLocation)
-		session.Engine.logger.Debugf("time(4) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+		x, err = time.ParseInLocation("2006-01-02 15:04:05", sdata, parseLoc)
+		//session.engine.logger.Debugf("time(4) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 	} else if len(sdata) == 10 && sdata[4] == '-' && sdata[7] == '-' {
-		x, err = time.ParseInLocation("2006-01-02", sdata, session.Engine.TZLocation)
-		session.Engine.logger.Debugf("time(5) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+		x, err = time.ParseInLocation("2006-01-02", sdata, parseLoc)
+		//session.engine.logger.Debugf("time(5) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 	} else if col.SQLType.Name == core.Time {
 		if strings.Contains(sdata, " ") {
 			ssd := strings.Split(sdata, " ")
@@ -65,13 +62,13 @@ func (session *Session) str2Time(col *core.Column, data string) (outTime time.Ti
 		}
 
 		sdata = strings.TrimSpace(sdata)
-		if session.Engine.dialect.DBType() == core.MYSQL && len(sdata) > 8 {
+		if session.engine.dialect.DBType() == core.MYSQL && len(sdata) > 8 {
 			sdata = sdata[len(sdata)-8:]
 		}
 
 		st := fmt.Sprintf("2006-01-02 %v", sdata)
-		x, err = time.ParseInLocation("2006-01-02 15:04:05", st, session.Engine.TZLocation)
-		session.Engine.logger.Debugf("time(6) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
+		x, err = time.ParseInLocation("2006-01-02 15:04:05", st, parseLoc)
+		//session.engine.logger.Debugf("time(6) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
 	} else {
 		outErr = fmt.Errorf("unsupported time format %v", sdata)
 		return
@@ -80,7 +77,7 @@ func (session *Session) str2Time(col *core.Column, data string) (outTime time.Ti
 		outErr = fmt.Errorf("unsupported time format %v: %v", sdata, err)
 		return
 	}
-	outTime = x
+	outTime = x.In(session.engine.TZLocation)
 	return
 }
 
@@ -108,7 +105,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 		if len(data) > 0 {
 			err := json.Unmarshal(data, x.Interface())
 			if err != nil {
-				session.Engine.logger.Error(err)
+				session.engine.logger.Error(err)
 				return err
 			}
 			fieldValue.Set(x.Elem())
@@ -122,7 +119,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			if len(data) > 0 {
 				err := json.Unmarshal(data, x.Interface())
 				if err != nil {
-					session.Engine.logger.Error(err)
+					session.engine.logger.Error(err)
 					return err
 				}
 				fieldValue.Set(x.Elem())
@@ -135,7 +132,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 				if len(data) > 0 {
 					err := json.Unmarshal(data, x.Interface())
 					if err != nil {
-						session.Engine.logger.Error(err)
+						session.engine.logger.Error(err)
 						return err
 					}
 					fieldValue.Set(x.Elem())
@@ -147,8 +144,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 	case reflect.String:
 		fieldValue.SetString(string(data))
 	case reflect.Bool:
-		d := string(data)
-		v, err := strconv.ParseBool(d)
+		v, err := asBool(data)
 		if err != nil {
 			return fmt.Errorf("arg %v as bool: %s", key, err.Error())
 		}
@@ -159,7 +155,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 		var err error
 		// for mysql, when use bit, it returned \x01
 		if col.SQLType.Name == core.Bit &&
-			session.Engine.dialect.DBType() == core.MYSQL { // !nashtsai! TODO dialect needs to provide conversion interface API
+			session.engine.dialect.DBType() == core.MYSQL { // !nashtsai! TODO dialect needs to provide conversion interface API
 			if len(data) == 1 {
 				x = int64(data[0])
 			} else {
@@ -207,41 +203,39 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 				}
 				v = x
 				fieldValue.Set(reflect.ValueOf(v).Convert(fieldType))
-			} else if session.Statement.UseCascade {
-				table := session.Engine.autoMapType(*fieldValue)
-				if table != nil {
-					// TODO: current only support 1 primary key
-					if len(table.PrimaryKeys) > 1 {
-						panic("unsupported composited primary key cascade")
-					}
-					var pk = make(core.PK, len(table.PrimaryKeys))
-					rawValueType := table.ColumnType(table.PKColumns()[0].FieldName)
-					var err error
-					pk[0], err = str2PK(string(data), rawValueType)
+			} else if session.statement.UseCascade {
+				table, err := session.engine.autoMapType(*fieldValue)
+				if err != nil {
+					return err
+				}
+
+				// TODO: current only support 1 primary key
+				if len(table.PrimaryKeys) > 1 {
+					return errors.New("unsupported composited primary key cascade")
+				}
+
+				var pk = make(core.PK, len(table.PrimaryKeys))
+				rawValueType := table.ColumnType(table.PKColumns()[0].FieldName)
+				pk[0], err = str2PK(string(data), rawValueType)
+				if err != nil {
+					return err
+				}
+
+				if !isPKZero(pk) {
+					// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
+					// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
+					// property to be fetched lazily
+					structInter := reflect.New(fieldValue.Type())
+					has, err := session.ID(pk).NoCascade().get(structInter.Interface())
 					if err != nil {
 						return err
 					}
-
-					if !isPKZero(pk) {
-						// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
-						// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
-						// property to be fetched lazily
-						structInter := reflect.New(fieldValue.Type())
-						newsession := session.Engine.NewSession()
-						defer newsession.Close()
-						has, err := newsession.Id(pk).NoCascade().Get(structInter.Interface())
-						if err != nil {
-							return err
-						}
-						if has {
-							v = structInter.Elem().Interface()
-							fieldValue.Set(reflect.ValueOf(v))
-						} else {
-							return errors.New("cascade obj is not exist")
-						}
+					if has {
+						v = structInter.Elem().Interface()
+						fieldValue.Set(reflect.ValueOf(v))
+					} else {
+						return errors.New("cascade obj is not exist")
 					}
-				} else {
-					return fmt.Errorf("unsupported struct type in Scan: %s", fieldValue.Type().String())
 				}
 			}
 		}
@@ -267,7 +261,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			if len(data) > 0 {
 				err := json.Unmarshal(data, &x)
 				if err != nil {
-					session.Engine.logger.Error(err)
+					session.engine.logger.Error(err)
 					return err
 				}
 				fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
@@ -278,7 +272,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			if len(data) > 0 {
 				err := json.Unmarshal(data, &x)
 				if err != nil {
-					session.Engine.logger.Error(err)
+					session.engine.logger.Error(err)
 					return err
 				}
 				fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
@@ -350,7 +344,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			var err error
 			// for mysql, when use bit, it returned \x01
 			if col.SQLType.Name == core.Bit &&
-				strings.Contains(session.Engine.DriverName(), "mysql") {
+				strings.Contains(session.engine.DriverName(), "mysql") {
 				if len(data) == 1 {
 					x = int64(data[0])
 				} else {
@@ -375,7 +369,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			var err error
 			// for mysql, when use bit, it returned \x01
 			if col.SQLType.Name == core.Bit &&
-				strings.Contains(session.Engine.DriverName(), "mysql") {
+				strings.Contains(session.engine.DriverName(), "mysql") {
 				if len(data) == 1 {
 					x = int(data[0])
 				} else {
@@ -403,7 +397,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			var err error
 			// for mysql, when use bit, it returned \x01
 			if col.SQLType.Name == core.Bit &&
-				session.Engine.dialect.DBType() == core.MYSQL {
+				session.engine.dialect.DBType() == core.MYSQL {
 				if len(data) == 1 {
 					x = int32(data[0])
 				} else {
@@ -431,7 +425,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			var err error
 			// for mysql, when use bit, it returned \x01
 			if col.SQLType.Name == core.Bit &&
-				strings.Contains(session.Engine.DriverName(), "mysql") {
+				strings.Contains(session.engine.DriverName(), "mysql") {
 				if len(data) == 1 {
 					x = int8(data[0])
 				} else {
@@ -459,7 +453,7 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 			var err error
 			// for mysql, when use bit, it returned \x01
 			if col.SQLType.Name == core.Bit &&
-				strings.Contains(session.Engine.DriverName(), "mysql") {
+				strings.Contains(session.engine.DriverName(), "mysql") {
 				if len(data) == 1 {
 					x = int16(data[0])
 				} else {
@@ -491,37 +485,37 @@ func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value,
 				v = x
 				fieldValue.Set(reflect.ValueOf(&x))
 			default:
-				if session.Statement.UseCascade {
+				if session.statement.UseCascade {
 					structInter := reflect.New(fieldType.Elem())
-					table := session.Engine.autoMapType(structInter.Elem())
-					if table != nil {
-						if len(table.PrimaryKeys) > 1 {
-							panic("unsupported composited primary key cascade")
-						}
-						var pk = make(core.PK, len(table.PrimaryKeys))
-						var err error
-						rawValueType := table.ColumnType(table.PKColumns()[0].FieldName)
-						pk[0], err = str2PK(string(data), rawValueType)
+					table, err := session.engine.autoMapType(structInter.Elem())
+					if err != nil {
+						return err
+					}
+
+					if len(table.PrimaryKeys) > 1 {
+						return errors.New("unsupported composited primary key cascade")
+					}
+
+					var pk = make(core.PK, len(table.PrimaryKeys))
+					rawValueType := table.ColumnType(table.PKColumns()[0].FieldName)
+					pk[0], err = str2PK(string(data), rawValueType)
+					if err != nil {
+						return err
+					}
+
+					if !isPKZero(pk) {
+						// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
+						// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
+						// property to be fetched lazily
+						has, err := session.ID(pk).NoCascade().get(structInter.Interface())
 						if err != nil {
 							return err
 						}
-
-						if !isPKZero(pk) {
-							// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
-							// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
-							// property to be fetched lazily
-							newsession := session.Engine.NewSession()
-							defer newsession.Close()
-							has, err := newsession.Id(pk).NoCascade().Get(structInter.Interface())
-							if err != nil {
-								return err
-							}
-							if has {
-								v = structInter.Interface()
-								fieldValue.Set(reflect.ValueOf(v))
-							} else {
-								return errors.New("cascade obj is not exist")
-							}
+						if has {
+							v = structInter.Interface()
+							fieldValue.Set(reflect.ValueOf(v))
+						} else {
+							return errors.New("cascade obj is not exist")
 						}
 					}
 				} else {
@@ -570,7 +564,7 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 		if fieldValue.IsNil() {
 			return nil, nil
 		} else if !fieldValue.IsValid() {
-			session.Engine.logger.Warn("the field[", col.FieldName, "] is invalid")
+			session.engine.logger.Warn("the field[", col.FieldName, "] is invalid")
 			return nil, nil
 		} else {
 			// !nashtsai! deference pointer type to instance type
@@ -588,12 +582,7 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 	case reflect.Struct:
 		if fieldType.ConvertibleTo(core.TimeType) {
 			t := fieldValue.Convert(core.TimeType).Interface().(time.Time)
-			if session.Engine.dialect.DBType() == core.MSSQL {
-				if t.IsZero() {
-					return nil, nil
-				}
-			}
-			tf := session.Engine.FormatTime(col.SQLType.Name, t)
+			tf := session.engine.formatColTime(col, t)
 			return tf, nil
 		}
 
@@ -603,7 +592,10 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 				return v.Value()
 			}
 
-			fieldTable := session.Engine.autoMapType(fieldValue)
+			fieldTable, err := session.engine.autoMapType(fieldValue)
+			if err != nil {
+				return nil, err
+			}
 			if len(fieldTable.PrimaryKeys) == 1 {
 				pkField := reflect.Indirect(fieldValue).FieldByName(fieldTable.PKColumns()[0].FieldName)
 				return pkField.Interface(), nil
@@ -614,14 +606,14 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 		if col.SQLType.IsText() {
 			bytes, err := json.Marshal(fieldValue.Interface())
 			if err != nil {
-				session.Engine.logger.Error(err)
+				session.engine.logger.Error(err)
 				return 0, err
 			}
 			return string(bytes), nil
 		} else if col.SQLType.IsBlob() {
 			bytes, err := json.Marshal(fieldValue.Interface())
 			if err != nil {
-				session.Engine.logger.Error(err)
+				session.engine.logger.Error(err)
 				return 0, err
 			}
 			return bytes, nil
@@ -630,7 +622,7 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 	case reflect.Complex64, reflect.Complex128:
 		bytes, err := json.Marshal(fieldValue.Interface())
 		if err != nil {
-			session.Engine.logger.Error(err)
+			session.engine.logger.Error(err)
 			return 0, err
 		}
 		return string(bytes), nil
@@ -642,7 +634,7 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 		if col.SQLType.IsText() {
 			bytes, err := json.Marshal(fieldValue.Interface())
 			if err != nil {
-				session.Engine.logger.Error(err)
+				session.engine.logger.Error(err)
 				return 0, err
 			}
 			return string(bytes), nil
@@ -655,7 +647,7 @@ func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Val
 			} else {
 				bytes, err = json.Marshal(fieldValue.Interface())
 				if err != nil {
-					session.Engine.logger.Error(err)
+					session.engine.logger.Error(err)
 					return 0, err
 				}
 			}

vendor/github.com/go-xorm/xorm/session_delete.go

@@ -12,26 +12,26 @@ import (
 	"github.com/go-xorm/core"
 )
 
-func (session *Session) cacheDelete(sqlStr string, args ...interface{}) error {
-	if session.Statement.RefTable == nil ||
-		session.Tx != nil {
+func (session *Session) cacheDelete(table *core.Table, tableName, sqlStr string, args ...interface{}) error {
+	if table == nil ||
+		session.tx != nil {
 		return ErrCacheFailed
 	}
 
-	for _, filter := range session.Engine.dialect.Filters() {
-		sqlStr = filter.Do(sqlStr, session.Engine.dialect, session.Statement.RefTable)
+	for _, filter := range session.engine.dialect.Filters() {
+		sqlStr = filter.Do(sqlStr, session.engine.dialect, table)
 	}
 
-	newsql := session.Statement.convertIDSQL(sqlStr)
+	newsql := session.statement.convertIDSQL(sqlStr)
 	if newsql == "" {
 		return ErrCacheFailed
 	}
 
-	cacher := session.Engine.getCacher2(session.Statement.RefTable)
-	tableName := session.Statement.TableName()
+	cacher := session.engine.getCacher2(table)
+	pkColumns := table.PKColumns()
 	ids, err := core.GetCacheSql(cacher, tableName, newsql, args)
 	if err != nil {
-		resultsSlice, err := session.query(newsql, args...)
+		resultsSlice, err := session.queryBytes(newsql, args...)
 		if err != nil {
 			return err
 		}
@@ -40,7 +40,7 @@ func (session *Session) cacheDelete(sqlStr string, args ...interface{}) error {
 			for _, data := range resultsSlice {
 				var id int64
 				var pk core.PK = make([]interface{}, 0)
-				for _, col := range session.Statement.RefTable.PKColumns() {
+				for _, col := range pkColumns {
 					if v, ok := data[col.Name]; !ok {
 						return errors.New("no id")
 					} else if col.SQLType.IsText() {
@@ -58,33 +58,30 @@ func (session *Session) cacheDelete(sqlStr string, args ...interface{}) error {
 				ids = append(ids, pk)
 			}
 		}
-	} /*else {
-	    session.Engine.LogDebug("delete cache sql %v", newsql)
-	    cacher.DelIds(tableName, genSqlKey(newsql, args))
-	}*/
+	}
 
 	for _, id := range ids {
-		session.Engine.logger.Debug("[cacheDelete] delete cache obj", tableName, id)
+		session.engine.logger.Debug("[cacheDelete] delete cache obj:", tableName, id)
 		sid, err := id.ToString()
 		if err != nil {
 			return err
 		}
 		cacher.DelBean(tableName, sid)
 	}
-	session.Engine.logger.Debug("[cacheDelete] clear cache sql", tableName)
+	session.engine.logger.Debug("[cacheDelete] clear cache table:", tableName)
 	cacher.ClearIds(tableName)
 	return nil
 }
 
 // Delete records, bean's non-empty fields are conditions
 func (session *Session) Delete(bean interface{}) (int64, error) {
-	defer session.resetStatement()
-	if session.IsAutoClose {
+	if session.isAutoClose {
 		defer session.Close()
 	}
 
-	session.Statement.setRefValue(rValue(bean))
-	var table = session.Statement.RefTable
+	if err := session.statement.setRefValue(rValue(bean)); err != nil {
+		return 0, err
+	}
 
 	// handle before delete processors
 	for _, closure := range session.beforeClosures {
@@ -96,13 +93,17 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 		processor.BeforeDelete()
 	}
 
-	// --
-	condSQL, condArgs, _ := session.Statement.genConds(bean)
-	if len(condSQL) == 0 && session.Statement.LimitN == 0 {
+	condSQL, condArgs, err := session.statement.genConds(bean)
+	if err != nil {
+		return 0, err
+	}
+	if len(condSQL) == 0 && session.statement.LimitN == 0 {
 		return 0, ErrNeedDeletedCond
 	}
 
-	var tableName = session.Engine.Quote(session.Statement.TableName())
+	var tableNameNoQuote = session.statement.TableName()
+	var tableName = session.engine.Quote(tableNameNoQuote)
+	var table = session.statement.RefTable
 	var deleteSQL string
 	if len(condSQL) > 0 {
 		deleteSQL = fmt.Sprintf("DELETE FROM %v WHERE %v", tableName, condSQL)
@@ -111,15 +112,15 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 	}
 
 	var orderSQL string
-	if len(session.Statement.OrderStr) > 0 {
-		orderSQL += fmt.Sprintf(" ORDER BY %s", session.Statement.OrderStr)
+	if len(session.statement.OrderStr) > 0 {
+		orderSQL += fmt.Sprintf(" ORDER BY %s", session.statement.OrderStr)
 	}
-	if session.Statement.LimitN > 0 {
-		orderSQL += fmt.Sprintf(" LIMIT %d", session.Statement.LimitN)
+	if session.statement.LimitN > 0 {
+		orderSQL += fmt.Sprintf(" LIMIT %d", session.statement.LimitN)
 	}
 
 	if len(orderSQL) > 0 {
-		switch session.Engine.dialect.DBType() {
+		switch session.engine.dialect.DBType() {
 		case core.POSTGRES:
 			inSQL := fmt.Sprintf("ctid IN (SELECT ctid FROM %s%s)", tableName, orderSQL)
 			if len(condSQL) > 0 {
@@ -144,7 +145,7 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 
 	var realSQL string
 	argsForCache := make([]interface{}, 0, len(condArgs)*2)
-	if session.Statement.unscoped || table.DeletedColumn() == nil { // tag "deleted" is disabled
+	if session.statement.unscoped || table.DeletedColumn() == nil { // tag "deleted" is disabled
 		realSQL = deleteSQL
 		copy(argsForCache, condArgs)
 		argsForCache = append(condArgs, argsForCache...)
@@ -155,12 +156,12 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 
 		deletedColumn := table.DeletedColumn()
 		realSQL = fmt.Sprintf("UPDATE %v SET %v = ? WHERE %v",
-			session.Engine.Quote(session.Statement.TableName()),
-			session.Engine.Quote(deletedColumn.Name),
+			session.engine.Quote(session.statement.TableName()),
+			session.engine.Quote(deletedColumn.Name),
 			condSQL)
 
 		if len(orderSQL) > 0 {
-			switch session.Engine.dialect.DBType() {
+			switch session.engine.dialect.DBType() {
 			case core.POSTGRES:
 				inSQL := fmt.Sprintf("ctid IN (SELECT ctid FROM %s%s)", tableName, orderSQL)
 				if len(condSQL) > 0 {
@@ -183,12 +184,12 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 			}
 		}
 
-		// !oinume! Insert NowTime to the head of session.Statement.Params
+		// !oinume! Insert nowTime to the head of session.statement.Params
 		condArgs = append(condArgs, "")
 		paramsLen := len(condArgs)
 		copy(condArgs[1:paramsLen], condArgs[0:paramsLen-1])
 
-		val, t := session.Engine.NowTime2(deletedColumn.SQLType.Name)
+		val, t := session.engine.nowTime(deletedColumn)
 		condArgs[0] = val
 
 		var colName = deletedColumn.Name
@@ -198,17 +199,18 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 		})
 	}
 
-	if cacher := session.Engine.getCacher2(session.Statement.RefTable); cacher != nil && session.Statement.UseCache {
-		session.cacheDelete(deleteSQL, argsForCache...)
+	if cacher := session.engine.getCacher2(table); cacher != nil && session.statement.UseCache {
+		session.cacheDelete(table, tableNameNoQuote, deleteSQL, argsForCache...)
 	}
 
+	session.statement.RefTable = table
 	res, err := session.exec(realSQL, condArgs...)
 	if err != nil {
 		return 0, err
 	}
 
 	// handle after delete processors
-	if session.IsAutoCommit {
+	if session.isAutoCommit {
 		for _, closure := range session.afterClosures {
 			closure(bean)
 		}