Fix #165

11 files changed, 178 insertions, 172 deletions

diff --git a/models/access.go b/models/access.go
index 4a202dc6bc..cf31fc137b 100644
--- a/models/access.go
+++ b/models/access.go
@@ -30,7 +30,7 @@ type Access struct {
 func AddAccess(access *Access) error {
 	access.UserName = strings.ToLower(access.UserName)
 	access.RepoName = strings.ToLower(access.RepoName)
-	_, err := orm.Insert(access)
+	_, err := x.Insert(access)
 	return err
 }
 
@@ -38,13 +38,13 @@ func AddAccess(access *Access) error {
 func UpdateAccess(access *Access) error {
 	access.UserName = strings.ToLower(access.UserName)
 	access.RepoName = strings.ToLower(access.RepoName)
-	_, err := orm.Id(access.Id).Update(access)
+	_, err := x.Id(access.Id).Update(access)
 	return err
 }
 
 // DeleteAccess deletes access record.
 func DeleteAccess(access *Access) error {
-	_, err := orm.Delete(access)
+	_, err := x.Delete(access)
 	return err
 }
 
@@ -67,7 +67,7 @@ func HasAccess(uname, repoName string, mode int) (bool, error) {
 		UserName: strings.ToLower(uname),
 		RepoName: strings.ToLower(repoName),
 	}
-	has, err := orm.Get(access)
+	has, err := x.Get(access)
 	if err != nil {
 		return false, err
 	} else if !has {
diff --git a/models/action.go b/models/action.go
index 2846823386..8ecdf1de16 100644
--- a/models/action.go
+++ b/models/action.go
@@ -209,7 +209,7 @@ func TransferRepoAction(user, newUser *User, repo *Repository) (err error) {
 // GetFeeds returns action list of given user in given context.
 func GetFeeds(userid, offset int64, isProfile bool) ([]*Action, error) {
 	actions := make([]*Action, 0, 20)
-	sess := orm.Limit(20, int(offset)).Desc("id").Where("user_id=?", userid)
+	sess := x.Limit(20, int(offset)).Desc("id").Where("user_id=?", userid)
 	if isProfile {
 		sess.Where("is_private=?", false).And("act_user_id=?", userid)
 	} else {
diff --git a/models/issue.go b/models/issue.go
index 7db728ec3d..11f6dd4ef9 100644
--- a/models/issue.go
+++ b/models/issue.go
@@ -92,7 +92,7 @@ func (i *Issue) GetAssignee() (err error) {
 
 // CreateIssue creates new issue for repository.
 func NewIssue(issue *Issue) (err error) {
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -114,7 +114,7 @@ func NewIssue(issue *Issue) (err error) {
 // GetIssueByIndex returns issue by given index in repository.
 func GetIssueByIndex(rid, index int64) (*Issue, error) {
 	issue := &Issue{RepoId: rid, Index: index}
-	has, err := orm.Get(issue)
+	has, err := x.Get(issue)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -126,7 +126,7 @@ func GetIssueByIndex(rid, index int64) (*Issue, error) {
 // GetIssueById returns an issue by ID.
 func GetIssueById(id int64) (*Issue, error) {
 	issue := &Issue{Id: id}
-	has, err := orm.Get(issue)
+	has, err := x.Get(issue)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -137,7 +137,7 @@ func GetIssueById(id int64) (*Issue, error) {
 
 // GetIssues returns a list of issues by given conditions.
 func GetIssues(uid, rid, pid, mid int64, page int, isClosed bool, labelIds, sortType string) ([]Issue, error) {
-	sess := orm.Limit(20, (page-1)*20)
+	sess := x.Limit(20, (page-1)*20)
 
 	if rid > 0 {
 		sess.Where("repo_id=?", rid).And("is_closed=?", isClosed)
@@ -193,13 +193,13 @@ const (
 // GetIssuesByLabel returns a list of issues by given label and repository.
 func GetIssuesByLabel(repoId int64, label string) ([]*Issue, error) {
 	issues := make([]*Issue, 0, 10)
-	err := orm.Where("repo_id=?", repoId).And("label_ids like '%$" + label + "|%'").Find(&issues)
+	err := x.Where("repo_id=?", repoId).And("label_ids like '%$" + label + "|%'").Find(&issues)
 	return issues, err
 }
 
 // GetIssueCountByPoster returns number of issues of repository by poster.
 func GetIssueCountByPoster(uid, rid int64, isClosed bool) int64 {
-	count, _ := orm.Where("repo_id=?", rid).And("poster_id=?", uid).And("is_closed=?", isClosed).Count(new(Issue))
+	count, _ := x.Where("repo_id=?", rid).And("poster_id=?", uid).And("is_closed=?", isClosed).Count(new(Issue))
 	return count
 }
 
@@ -241,7 +241,7 @@ func NewIssueUserPairs(rid, iid, oid, pid, aid int64, repoName string) (err erro
 			isNeedAddPoster = false
 		}
 		iu.IsAssigned = iu.Uid == aid
-		if _, err = orm.Insert(iu); err != nil {
+		if _, err = x.Insert(iu); err != nil {
 			return err
 		}
 	}
@@ -249,7 +249,7 @@ func NewIssueUserPairs(rid, iid, oid, pid, aid int64, repoName string) (err erro
 		iu.Uid = pid
 		iu.IsPoster = true
 		iu.IsAssigned = iu.Uid == aid
-		if _, err = orm.Insert(iu); err != nil {
+		if _, err = x.Insert(iu); err != nil {
 			return err
 		}
 	}
@@ -270,7 +270,7 @@ func PairsContains(ius []*IssueUser, issueId int64) int {
 // GetIssueUserPairs returns issue-user pairs by given repository and user.
 func GetIssueUserPairs(rid, uid int64, isClosed bool) ([]*IssueUser, error) {
 	ius := make([]*IssueUser, 0, 10)
-	err := orm.Where("is_closed=?", isClosed).Find(&ius, &IssueUser{RepoId: rid, Uid: uid})
+	err := x.Where("is_closed=?", isClosed).Find(&ius, &IssueUser{RepoId: rid, Uid: uid})
 	return ius, err
 }
 
@@ -285,7 +285,7 @@ func GetIssueUserPairsByRepoIds(rids []int64, isClosed bool, page int) ([]*Issue
 	cond := strings.TrimSuffix(buf.String(), " OR ")
 
 	ius := make([]*IssueUser, 0, 10)
-	sess := orm.Limit(20, (page-1)*20).Where("is_closed=?", isClosed)
+	sess := x.Limit(20, (page-1)*20).Where("is_closed=?", isClosed)
 	if len(cond) > 0 {
 		sess.And(cond)
 	}
@@ -296,7 +296,7 @@ func GetIssueUserPairsByRepoIds(rids []int64, isClosed bool, page int) ([]*Issue
 // GetIssueUserPairsByMode returns issue-user pairs by given repository and user.
 func GetIssueUserPairsByMode(uid, rid int64, isClosed bool, page, filterMode int) ([]*IssueUser, error) {
 	ius := make([]*IssueUser, 0, 10)
-	sess := orm.Limit(20, (page-1)*20).Where("uid=?", uid).And("is_closed=?", isClosed)
+	sess := x.Limit(20, (page-1)*20).Where("uid=?", uid).And("is_closed=?", isClosed)
 	if rid > 0 {
 		sess.And("repo_id=?", rid)
 	}
@@ -335,7 +335,7 @@ func GetIssueStats(rid, uid int64, isShowClosed bool, filterMode int) *IssueStat
 	issue := new(Issue)
 	tmpSess := &xorm.Session{}
 
-	sess := orm.Where("repo_id=?", rid)
+	sess := x.Where("repo_id=?", rid)
 	*tmpSess = *sess
 	stats.OpenCount, _ = tmpSess.And("is_closed=?", false).Count(issue)
 	*tmpSess = *sess
@@ -347,7 +347,7 @@ func GetIssueStats(rid, uid int64, isShowClosed bool, filterMode int) *IssueStat
 	}
 
 	if filterMode != FM_MENTION {
-		sess = orm.Where("repo_id=?", rid)
+		sess = x.Where("repo_id=?", rid)
 		switch filterMode {
 		case FM_ASSIGN:
 			sess.And("assignee_id=?", uid)
@@ -361,16 +361,16 @@ func GetIssueStats(rid, uid int64, isShowClosed bool, filterMode int) *IssueStat
 		*tmpSess = *sess
 		stats.ClosedCount, _ = tmpSess.And("is_closed=?", true).Count(issue)
 	} else {
-		sess := orm.Where("repo_id=?", rid).And("uid=?", uid).And("is_mentioned=?", true)
+		sess := x.Where("repo_id=?", rid).And("uid=?", uid).And("is_mentioned=?", true)
 		*tmpSess = *sess
 		stats.OpenCount, _ = tmpSess.And("is_closed=?", false).Count(new(IssueUser))
 		*tmpSess = *sess
 		stats.ClosedCount, _ = tmpSess.And("is_closed=?", true).Count(new(IssueUser))
 	}
 nofilter:
-	stats.AssignCount, _ = orm.Where("repo_id=?", rid).And("is_closed=?", isShowClosed).And("assignee_id=?", uid).Count(issue)
-	stats.CreateCount, _ = orm.Where("repo_id=?", rid).And("is_closed=?", isShowClosed).And("poster_id=?", uid).Count(issue)
-	stats.MentionCount, _ = orm.Where("repo_id=?", rid).And("uid=?", uid).And("is_closed=?", isShowClosed).And("is_mentioned=?", true).Count(new(IssueUser))
+	stats.AssignCount, _ = x.Where("repo_id=?", rid).And("is_closed=?", isShowClosed).And("assignee_id=?", uid).Count(issue)
+	stats.CreateCount, _ = x.Where("repo_id=?", rid).And("is_closed=?", isShowClosed).And("poster_id=?", uid).Count(issue)
+	stats.MentionCount, _ = x.Where("repo_id=?", rid).And("uid=?", uid).And("is_closed=?", isShowClosed).And("is_mentioned=?", true).Count(new(IssueUser))
 	return stats
 }
 
@@ -378,28 +378,28 @@ nofilter:
 func GetUserIssueStats(uid int64, filterMode int) *IssueStats {
 	stats := &IssueStats{}
 	issue := new(Issue)
-	stats.AssignCount, _ = orm.Where("assignee_id=?", uid).And("is_closed=?", false).Count(issue)
-	stats.CreateCount, _ = orm.Where("poster_id=?", uid).And("is_closed=?", false).Count(issue)
+	stats.AssignCount, _ = x.Where("assignee_id=?", uid).And("is_closed=?", false).Count(issue)
+	stats.CreateCount, _ = x.Where("poster_id=?", uid).And("is_closed=?", false).Count(issue)
 	return stats
 }
 
 // UpdateIssue updates information of issue.
 func UpdateIssue(issue *Issue) error {
-	_, err := orm.Id(issue.Id).AllCols().Update(issue)
+	_, err := x.Id(issue.Id).AllCols().Update(issue)
 	return err
 }
 
 // UpdateIssueUserByStatus updates issue-user pairs by issue status.
 func UpdateIssueUserPairsByStatus(iid int64, isClosed bool) error {
 	rawSql := "UPDATE `issue_user` SET is_closed = ? WHERE issue_id = ?"
-	_, err := orm.Exec(rawSql, isClosed, iid)
+	_, err := x.Exec(rawSql, isClosed, iid)
 	return err
 }
 
 // UpdateIssueUserPairByAssignee updates issue-user pair for assigning.
 func UpdateIssueUserPairByAssignee(aid, iid int64) error {
 	rawSql := "UPDATE `issue_user` SET is_assigned = ? WHERE issue_id = ?"
-	if _, err := orm.Exec(rawSql, false, iid); err != nil {
+	if _, err := x.Exec(rawSql, false, iid); err != nil {
 		return err
 	}
 
@@ -408,14 +408,14 @@ func UpdateIssueUserPairByAssignee(aid, iid int64) error {
 		return nil
 	}
 	rawSql = "UPDATE `issue_user` SET is_assigned = true WHERE uid = ? AND issue_id = ?"
-	_, err := orm.Exec(rawSql, aid, iid)
+	_, err := x.Exec(rawSql, aid, iid)
 	return err
 }
 
 // UpdateIssueUserPairByRead updates issue-user pair for reading.
 func UpdateIssueUserPairByRead(uid, iid int64) error {
 	rawSql := "UPDATE `issue_user` SET is_read = ? WHERE uid = ? AND issue_id = ?"
-	_, err := orm.Exec(rawSql, true, uid, iid)
+	_, err := x.Exec(rawSql, true, uid, iid)
 	return err
 }
 
@@ -423,16 +423,16 @@ func UpdateIssueUserPairByRead(uid, iid int64) error {
 func UpdateIssueUserPairsByMentions(uids []int64, iid int64) error {
 	for _, uid := range uids {
 		iu := &IssueUser{Uid: uid, IssueId: iid}
-		has, err := orm.Get(iu)
+		has, err := x.Get(iu)
 		if err != nil {
 			return err
 		}
 
 		iu.IsMentioned = true
 		if has {
-			_, err = orm.Id(iu.Id).AllCols().Update(iu)
+			_, err = x.Id(iu.Id).AllCols().Update(iu)
 		} else {
-			_, err = orm.Insert(iu)
+			_, err = x.Insert(iu)
 		}
 		if err != nil {
 			return err
@@ -467,7 +467,7 @@ func (m *Label) CalOpenIssues() {
 
 // NewLabel creates new label of repository.
 func NewLabel(l *Label) error {
-	_, err := orm.Insert(l)
+	_, err := x.Insert(l)
 	return err
 }
 
@@ -478,7 +478,7 @@ func GetLabelById(id int64) (*Label, error) {
 	}
 
 	l := &Label{Id: id}
-	has, err := orm.Get(l)
+	has, err := x.Get(l)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -490,13 +490,13 @@ func GetLabelById(id int64) (*Label, error) {
 // GetLabels returns a list of labels of given repository ID.
 func GetLabels(repoId int64) ([]*Label, error) {
 	labels := make([]*Label, 0, 10)
-	err := orm.Where("repo_id=?", repoId).Find(&labels)
+	err := x.Where("repo_id=?", repoId).Find(&labels)
 	return labels, err
 }
 
 // UpdateLabel updates label information.
 func UpdateLabel(l *Label) error {
-	_, err := orm.Id(l.Id).Update(l)
+	_, err := x.Id(l.Id).Update(l)
 	return err
 }
 
@@ -516,7 +516,7 @@ func DeleteLabel(repoId int64, strId string) error {
 		return err
 	}
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -569,7 +569,7 @@ func (m *Milestone) CalOpenIssues() {
 
 // NewMilestone creates new milestone of repository.
 func NewMilestone(m *Milestone) (err error) {
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -591,7 +591,7 @@ func NewMilestone(m *Milestone) (err error) {
 // GetMilestoneById returns the milestone by given ID.
 func GetMilestoneById(id int64) (*Milestone, error) {
 	m := &Milestone{Id: id}
-	has, err := orm.Get(m)
+	has, err := x.Get(m)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -603,7 +603,7 @@ func GetMilestoneById(id int64) (*Milestone, error) {
 // GetMilestoneByIndex returns the milestone of given repository and index.
 func GetMilestoneByIndex(repoId, idx int64) (*Milestone, error) {
 	m := &Milestone{RepoId: repoId, Index: idx}
-	has, err := orm.Get(m)
+	has, err := x.Get(m)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -615,13 +615,13 @@ func GetMilestoneByIndex(repoId, idx int64) (*Milestone, error) {
 // GetMilestones returns a list of milestones of given repository and status.
 func GetMilestones(repoId int64, isClosed bool) ([]*Milestone, error) {
 	miles := make([]*Milestone, 0, 10)
-	err := orm.Where("repo_id=?", repoId).And("is_closed=?", isClosed).Find(&miles)
+	err := x.Where("repo_id=?", repoId).And("is_closed=?", isClosed).Find(&miles)
 	return miles, err
 }
 
 // UpdateMilestone updates information of given milestone.
 func UpdateMilestone(m *Milestone) error {
-	_, err := orm.Id(m.Id).Update(m)
+	_, err := x.Id(m.Id).Update(m)
 	return err
 }
 
@@ -632,7 +632,7 @@ func ChangeMilestoneStatus(m *Milestone, isClosed bool) (err error) {
 		return err
 	}
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -658,7 +658,7 @@ func ChangeMilestoneStatus(m *Milestone, isClosed bool) (err error) {
 
 // ChangeMilestoneAssign changes assignment of milestone for issue.
 func ChangeMilestoneAssign(oldMid, mid int64, issue *Issue) (err error) {
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -717,7 +717,7 @@ func ChangeMilestoneAssign(oldMid, mid int64, issue *Issue) (err error) {
 
 // DeleteMilestone deletes a milestone.
 func DeleteMilestone(m *Milestone) (err error) {
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -777,7 +777,7 @@ type Comment struct {
 
 // CreateComment creates comment of issue or commit.
 func CreateComment(userId, repoId, issueId, commitId, line int64, cmtType int, content string) error {
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err := sess.Begin(); err != nil {
 		return err
@@ -816,6 +816,6 @@ func CreateComment(userId, repoId, issueId, commitId, line int64, cmtType int, c
 // GetIssueComments returns list of comment by given issue id.
 func GetIssueComments(issueId int64) ([]Comment, error) {
 	comments := make([]Comment, 0, 10)
-	err := orm.Asc("created").Find(&comments, &Comment{IssueId: issueId})
+	err := x.Asc("created").Find(&comments, &Comment{IssueId: issueId})
 	return comments, err
 }
diff --git a/models/login.go b/models/login.go
index 863ba44e20..98c5c64e40 100644
--- a/models/login.go
+++ b/models/login.go
@@ -109,19 +109,19 @@ func (source *LoginSource) BeforeSet(colName string, val xorm.Cell) {
 }
 
 func CreateSource(source *LoginSource) error {
-	_, err := orm.Insert(source)
+	_, err := x.Insert(source)
 	return err
 }
 
 func GetAuths() ([]*LoginSource, error) {
 	var auths = make([]*LoginSource, 0, 5)
-	err := orm.Find(&auths)
+	err := x.Find(&auths)
 	return auths, err
 }
 
 func GetLoginSourceById(id int64) (*LoginSource, error) {
 	source := new(LoginSource)
-	has, err := orm.Id(id).Get(source)
+	has, err := x.Id(id).Get(source)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -131,19 +131,19 @@ func GetLoginSourceById(id int64) (*LoginSource, error) {
 }
 
 func UpdateSource(source *LoginSource) error {
-	_, err := orm.Id(source.Id).AllCols().Update(source)
+	_, err := x.Id(source.Id).AllCols().Update(source)
 	return err
 }
 
 func DelLoginSource(source *LoginSource) error {
-	cnt, err := orm.Count(&User{LoginSource: source.Id})
+	cnt, err := x.Count(&User{LoginSource: source.Id})
 	if err != nil {
 		return err
 	}
 	if cnt > 0 {
 		return ErrAuthenticationUserUsed
 	}
-	_, err = orm.Id(source.Id).Delete(&LoginSource{})
+	_, err = x.Id(source.Id).Delete(&LoginSource{})
 	return err
 }
 
@@ -156,7 +156,7 @@ func UserSignIn(uname, passwd string) (*User, error) {
 		u = &User{LowerName: strings.ToLower(uname)}
 	}
 
-	has, err := orm.Get(u)
+	has, err := x.Get(u)
 	if err != nil {
 		return nil, err
 	}
@@ -182,7 +182,7 @@ func UserSignIn(uname, passwd string) (*User, error) {
 	} else {
 		if !has {
 			var sources []LoginSource
-			if err = orm.UseBool().Find(&sources,
+			if err = x.UseBool().Find(&sources,
 				&LoginSource{IsActived: true, AllowAutoRegister: true}); err != nil {
 				return nil, err
 			}
@@ -209,7 +209,7 @@ func UserSignIn(uname, passwd string) (*User, error) {
 		}
 
 		var source LoginSource
-		hasSource, err := orm.Id(u.LoginSource).Get(&source)
+		hasSource, err := x.Id(u.LoginSource).Get(&source)
 		if err != nil {
 			return nil, err
 		} else if !hasSource {
diff --git a/models/models.go b/models/models.go
index a59c051712..d6273d7f98 100644
--- a/models/models.go
+++ b/models/models.go
@@ -18,7 +18,7 @@ import (
 )
 
 var (
-	orm    *xorm.Engine
+	x      *xorm.Engine
 	tables []interface{}
 
 	HasEngine bool
@@ -88,7 +88,7 @@ func NewTestEngine(x *xorm.Engine) (err error) {
 func SetEngine() (err error) {
 	switch DbCfg.Type {
 	case "mysql":
-		orm, err = xorm.NewEngine("mysql", fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8",
+		x, err = xorm.NewEngine("mysql", fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8",
 			DbCfg.User, DbCfg.Pwd, DbCfg.Host, DbCfg.Name))
 	case "postgres":
 		var host, port = "127.0.0.1", "5432"
@@ -99,11 +99,11 @@ func SetEngine() (err error) {
 		if len(fields) > 1 && len(strings.TrimSpace(fields[1])) > 0 {
 			port = fields[1]
 		}
-		orm, err = xorm.NewEngine("postgres", fmt.Sprintf("user=%s password=%s host=%s port=%s dbname=%s sslmode=%s",
+		x, err = xorm.NewEngine("postgres", fmt.Sprintf("user=%s password=%s host=%s port=%s dbname=%s sslmode=%s",
 			DbCfg.User, DbCfg.Pwd, host, port, DbCfg.Name, DbCfg.SslMode))
 	case "sqlite3":
 		os.MkdirAll(path.Dir(DbCfg.Path), os.ModePerm)
-		orm, err = xorm.NewEngine("sqlite3", DbCfg.Path)
+		x, err = xorm.NewEngine("sqlite3", DbCfg.Path)
 	default:
 		return fmt.Errorf("Unknown database type: %s", DbCfg.Type)
 	}
@@ -120,11 +120,11 @@ func SetEngine() (err error) {
 	if err != nil {
 		return fmt.Errorf("models.init(fail to create xorm.log): %v", err)
 	}
-	orm.Logger = xorm.NewSimpleLogger(f)
+	x.Logger = xorm.NewSimpleLogger(f)
 
-	orm.ShowSQL = true
-	orm.ShowDebug = true
-	orm.ShowErr = true
+	x.ShowSQL = true
+	x.ShowDebug = true
+	x.ShowErr = true
 	return nil
 }
 
@@ -132,7 +132,7 @@ func NewEngine() (err error) {
 	if err = SetEngine(); err != nil {
 		return err
 	}
-	if err = orm.Sync(tables...); err != nil {
+	if err = x.Sync2(tables...); err != nil {
 		return fmt.Errorf("sync database struct error: %v\n", err)
 	}
 	return nil
@@ -147,24 +147,24 @@ type Statistic struct {
 }
 
 func GetStatistic() (stats Statistic) {
-	stats.Counter.User, _ = orm.Count(new(User))
-	stats.Counter.PublicKey, _ = orm.Count(new(PublicKey))
-	stats.Counter.Repo, _ = orm.Count(new(Repository))
-	stats.Counter.Watch, _ = orm.Count(new(Watch))
-	stats.Counter.Action, _ = orm.Count(new(Action))
-	stats.Counter.Access, _ = orm.Count(new(Access))
-	stats.Counter.Issue, _ = orm.Count(new(Issue))
-	stats.Counter.Comment, _ = orm.Count(new(Comment))
-	stats.Counter.Mirror, _ = orm.Count(new(Mirror))
-	stats.Counter.Oauth, _ = orm.Count(new(Oauth2))
-	stats.Counter.Release, _ = orm.Count(new(Release))
-	stats.Counter.LoginSource, _ = orm.Count(new(LoginSource))
-	stats.Counter.Webhook, _ = orm.Count(new(Webhook))
-	stats.Counter.Milestone, _ = orm.Count(new(Milestone))
+	stats.Counter.User, _ = x.Count(new(User))
+	stats.Counter.PublicKey, _ = x.Count(new(PublicKey))
+	stats.Counter.Repo, _ = x.Count(new(Repository))
+	stats.Counter.Watch, _ = x.Count(new(Watch))
+	stats.Counter.Action, _ = x.Count(new(Action))
+	stats.Counter.Access, _ = x.Count(new(Access))
+	stats.Counter.Issue, _ = x.Count(new(Issue))
+	stats.Counter.Comment, _ = x.Count(new(Comment))
+	stats.Counter.Mirror, _ = x.Count(new(Mirror))
+	stats.Counter.Oauth, _ = x.Count(new(Oauth2))
+	stats.Counter.Release, _ = x.Count(new(Release))
+	stats.Counter.LoginSource, _ = x.Count(new(LoginSource))
+	stats.Counter.Webhook, _ = x.Count(new(Webhook))
+	stats.Counter.Milestone, _ = x.Count(new(Milestone))
 	return
 }
 
 // DumpDatabase dumps all data from database to file system.
 func DumpDatabase(filePath string) error {
-	return orm.DumpAllToFile(filePath)
+	return x.DumpAllToFile(filePath)
 }
diff --git a/models/oauth2.go b/models/oauth2.go
index 61044d6882..4b024a26e4 100644
--- a/models/oauth2.go
+++ b/models/oauth2.go
@@ -8,16 +8,16 @@ import (
 	"errors"
 )
 
-// OT: Oauth2 Type
+type OauthType int
+
 const (
-	OT_GITHUB = iota + 1
-	OT_GOOGLE
-	OT_TWITTER
-	OT_QQ
-	OT_WEIBO
-	OT_BITBUCKET
-	OT_OSCHINA
-	OT_FACEBOOK
+	GITHUB OauthType = iota + 1
+	GOOGLE
+	TWITTER
+	QQ
+	WEIBO
+	BITBUCKET
+	FACEBOOK
 )
 
 var (
@@ -35,18 +35,18 @@ type Oauth2 struct {
 }
 
 func BindUserOauth2(userId, oauthId int64) error {
-	_, err := orm.Id(oauthId).Update(&Oauth2{Uid: userId})
+	_, err := x.Id(oauthId).Update(&Oauth2{Uid: userId})
 	return err
 }
 
 func AddOauth2(oa *Oauth2) error {
-	_, err := orm.Insert(oa)
+	_, err := x.Insert(oa)
 	return err
 }
 
 func GetOauth2(identity string) (oa *Oauth2, err error) {
 	oa = &Oauth2{Identity: identity}
-	isExist, err := orm.Get(oa)
+	isExist, err := x.Get(oa)
 	if err != nil {
 		return
 	} else if !isExist {
@@ -60,7 +60,7 @@ func GetOauth2(identity string) (oa *Oauth2, err error) {
 
 func GetOauth2ById(id int64) (oa *Oauth2, err error) {
 	oa = new(Oauth2)
-	has, err := orm.Id(id).Get(oa)
+	has, err := x.Id(id).Get(oa)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -71,18 +71,18 @@ func GetOauth2ById(id int64) (oa *Oauth2, err error) {
 
 // GetOauthByUserId returns list of oauthes that are releated to given user.
 func GetOauthByUserId(uid int64) (oas []*Oauth2, err error) {
-	err = orm.Find(&oas, Oauth2{Uid: uid})
+	err = x.Find(&oas, Oauth2{Uid: uid})
 	return oas, err
 }
 
 // DeleteOauth2ById deletes a oauth2 by ID.
 func DeleteOauth2ById(id int64) error {
-	_, err := orm.Delete(&Oauth2{Id: id})
+	_, err := x.Delete(&Oauth2{Id: id})
 	return err
 }
 
 // CleanUnbindOauth deletes all unbind OAuthes.
 func CleanUnbindOauth() error {
-	_, err := orm.Delete(&Oauth2{Uid: -1})
+	_, err := x.Delete(&Oauth2{Uid: -1})
 	return err
 }
diff --git a/models/publickey.go b/models/publickey.go
index b0021a6880..35768b4893 100644
--- a/models/publickey.go
+++ b/models/publickey.go
@@ -107,7 +107,7 @@ func saveAuthorizedKeyFile(key *PublicKey) error {
 
 // AddPublicKey adds new public key to database and authorized_keys file.
 func AddPublicKey(key *PublicKey) (err error) {
-	has, err := orm.Get(key)
+	has, err := x.Get(key)
 	if err != nil {
 		return err
 	} else if has {
@@ -130,11 +130,11 @@ func AddPublicKey(key *PublicKey) (err error) {
 	key.Fingerprint = strings.Split(stdout, " ")[1]
 
 	// Save SSH key.
-	if _, err = orm.Insert(key); err != nil {
+	if _, err = x.Insert(key); err != nil {
 		return err
 	} else if err = saveAuthorizedKeyFile(key); err != nil {
 		// Roll back.
-		if _, err2 := orm.Delete(key); err2 != nil {
+		if _, err2 := x.Delete(key); err2 != nil {
 			return err2
 		}
 		return err
@@ -146,7 +146,7 @@ func AddPublicKey(key *PublicKey) (err error) {
 // ListPublicKey returns a list of all public keys that user has.
 func ListPublicKey(uid int64) ([]PublicKey, error) {
 	keys := make([]PublicKey, 0, 5)
-	err := orm.Find(&keys, &PublicKey{OwnerId: uid})
+	err := x.Find(&keys, &PublicKey{OwnerId: uid})
 	return keys, err
 }
 
@@ -205,14 +205,14 @@ func rewriteAuthorizedKeys(key *PublicKey, p, tmpP string) error {
 
 // DeletePublicKey deletes SSH key information both in database and authorized_keys file.
 func DeletePublicKey(key *PublicKey) error {
-	has, err := orm.Get(key)
+	has, err := x.Get(key)
 	if err != nil {
 		return err
 	} else if !has {
 		return ErrKeyNotExist
 	}
 
-	if _, err = orm.Delete(key); err != nil {
+	if _, err = x.Delete(key); err != nil {
 		return err
 	}
 
diff --git a/models/release.go b/models/release.go
index 32e8c92cc4..3e1a78118c 100644
--- a/models/release.go
+++ b/models/release.go
@@ -43,7 +43,7 @@ func IsReleaseExist(repoId int64, tagName string) (bool, error) {
 		return false, nil
 	}
 
-	return orm.Get(&Release{RepoId: repoId, LowerTagName: strings.ToLower(tagName)})
+	return x.Get(&Release{RepoId: repoId, LowerTagName: strings.ToLower(tagName)})
 }
 
 func createTag(gitRepo *git.Repository, rel *Release) error {
@@ -86,7 +86,7 @@ func CreateRelease(gitRepo *git.Repository, rel *Release) error {
 		return err
 	}
 	rel.LowerTagName = strings.ToLower(rel.TagName)
-	_, err = orm.InsertOne(rel)
+	_, err = x.InsertOne(rel)
 	return err
 }
 
@@ -100,13 +100,13 @@ func GetRelease(repoId int64, tagName string) (*Release, error) {
 	}
 
 	rel := &Release{RepoId: repoId, LowerTagName: strings.ToLower(tagName)}
-	_, err = orm.Get(rel)
+	_, err = x.Get(rel)
 	return rel, err
 }
 
 // GetReleasesByRepoId returns a list of releases of repository.
 func GetReleasesByRepoId(repoId int64) (rels []*Release, err error) {
-	err = orm.Desc("created").Find(&rels, Release{RepoId: repoId})
+	err = x.Desc("created").Find(&rels, Release{RepoId: repoId})
 	return rels, err
 }
 
@@ -141,6 +141,6 @@ func UpdateRelease(gitRepo *git.Repository, rel *Release) (err error) {
 	if err = createTag(gitRepo, rel); err != nil {
 		return err
 	}
-	_, err = orm.Id(rel.Id).AllCols().Update(rel)
+	_, err = x.Id(rel.Id).AllCols().Update(rel)
 	return err
 }
diff --git a/models/repo.go b/models/repo.go
index 6b98d0e409..4ccaccbf81 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -147,7 +147,7 @@ func (repo *Repository) GetOwner() (err error) {
 // IsRepositoryExist returns true if the repository with given name under user has already existed.
 func IsRepositoryExist(u *User, repoName string) (bool, error) {
 	repo := Repository{OwnerId: u.Id}
-	has, err := orm.Where("lower_name = ?", strings.ToLower(repoName)).Get(&repo)
+	has, err := x.Where("lower_name = ?", strings.ToLower(repoName)).Get(&repo)
 	if err != nil {
 		return has, err
 	} else if !has {
@@ -197,7 +197,7 @@ func MirrorRepository(repoId int64, userName, repoName, repoPath, url string) er
 		return errors.New("git clone --mirror: " + stderr)
 	}
 
-	if _, err = orm.InsertOne(&Mirror{
+	if _, err = x.InsertOne(&Mirror{
 		RepoId:     repoId,
 		RepoName:   strings.ToLower(userName + "/" + repoName),
 		Interval:   24,
@@ -211,7 +211,7 @@ func MirrorRepository(repoId int64, userName, repoName, repoPath, url string) er
 
 func GetMirror(repoId int64) (*Mirror, error) {
 	m := &Mirror{RepoId: repoId}
-	has, err := orm.Get(m)
+	has, err := x.Get(m)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -221,13 +221,13 @@ func GetMirror(repoId int64) (*Mirror, error) {
 }
 
 func UpdateMirror(m *Mirror) error {
-	_, err := orm.Id(m.Id).Update(m)
+	_, err := x.Id(m.Id).Update(m)
 	return err
 }
 
 // MirrorUpdate checks and updates mirror repositories.
 func MirrorUpdate() {
-	if err := orm.Iterate(new(Mirror), func(idx int, bean interface{}) error {
+	if err := x.Iterate(new(Mirror), func(idx int, bean interface{}) error {
 		m := bean.(*Mirror)
 		if m.NextUpdate.After(time.Now()) {
 			return nil
@@ -481,7 +481,7 @@ func CreateRepository(user *User, name, desc, lang, license string, private, mir
 
 	repoPath := RepoPath(user.Name, repo.Name)
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	sess.Begin()
 
@@ -566,13 +566,13 @@ func CreateRepository(user *User, name, desc, lang, license string, private, mir
 // It also auto-gets corresponding users.
 func GetRepositoriesWithUsers(num, offset int) ([]*Repository, error) {
 	repos := make([]*Repository, 0, num)
-	if err := orm.Limit(num, offset).Asc("id").Find(&repos); err != nil {
+	if err := x.Limit(num, offset).Asc("id").Find(&repos); err != nil {
 		return nil, err
 	}
 
 	for _, repo := range repos {
 		repo.Owner = &User{Id: repo.OwnerId}
-		has, err := orm.Get(repo.Owner)
+		has, err := x.Get(repo.Owner)
 		if err != nil {
 			return nil, err
 		} else if !has {
@@ -597,11 +597,11 @@ func TransferOwnership(user *User, newOwner string, repo *Repository) (err error
 
 	// Update accesses.
 	accesses := make([]Access, 0, 10)
-	if err = orm.Find(&accesses, &Access{RepoName: user.LowerName + "/" + repo.LowerName}); err != nil {
+	if err = x.Find(&accesses, &Access{RepoName: user.LowerName + "/" + repo.LowerName}); err != nil {
 		return err
 	}
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -662,11 +662,11 @@ func TransferOwnership(user *User, newOwner string, repo *Repository) (err error
 func ChangeRepositoryName(userName, oldRepoName, newRepoName string) (err error) {
 	// Update accesses.
 	accesses := make([]Access, 0, 10)
-	if err = orm.Find(&accesses, &Access{RepoName: strings.ToLower(userName + "/" + oldRepoName)}); err != nil {
+	if err = x.Find(&accesses, &Access{RepoName: strings.ToLower(userName + "/" + oldRepoName)}); err != nil {
 		return err
 	}
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -697,21 +697,21 @@ func UpdateRepository(repo *Repository) error {
 	if len(repo.Website) > 255 {
 		repo.Website = repo.Website[:255]
 	}
-	_, err := orm.Id(repo.Id).AllCols().Update(repo)
+	_, err := x.Id(repo.Id).AllCols().Update(repo)
 	return err
 }
 
 // DeleteRepository deletes a repository for a user or orgnaztion.
 func DeleteRepository(userId, repoId int64, userName string) (err error) {
 	repo := &Repository{Id: repoId, OwnerId: userId}
-	has, err := orm.Get(repo)
+	has, err := x.Get(repo)
 	if err != nil {
 		return err
 	} else if !has {
 		return ErrRepoNotExist
 	}
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -750,7 +750,7 @@ func DeleteRepository(userId, repoId int64, userName string) (err error) {
 	}
 
 	// Delete comments.
-	if err = orm.Iterate(&Issue{RepoId: repoId}, func(idx int, bean interface{}) error {
+	if err = x.Iterate(&Issue{RepoId: repoId}, func(idx int, bean interface{}) error {
 		issue := bean.(*Issue)
 		if _, err = sess.Delete(&Comment{IssueId: issue.Id}); err != nil {
 			sess.Rollback()
@@ -785,7 +785,7 @@ func GetRepositoryByName(userId int64, repoName string) (*Repository, error) {
 		OwnerId:   userId,
 		LowerName: strings.ToLower(repoName),
 	}
-	has, err := orm.Get(repo)
+	has, err := x.Get(repo)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -797,7 +797,7 @@ func GetRepositoryByName(userId int64, repoName string) (*Repository, error) {
 // GetRepositoryById returns the repository by given id if exists.
 func GetRepositoryById(id int64) (*Repository, error) {
 	repo := &Repository{}
-	has, err := orm.Id(id).Get(repo)
+	has, err := x.Id(id).Get(repo)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -809,7 +809,7 @@ func GetRepositoryById(id int64) (*Repository, error) {
 // GetRepositories returns a list of repositories of given user.
 func GetRepositories(uid int64, private bool) ([]*Repository, error) {
 	repos := make([]*Repository, 0, 10)
-	sess := orm.Desc("updated")
+	sess := x.Desc("updated")
 	if !private {
 		sess.Where("is_private=?", false)
 	}
@@ -820,19 +820,19 @@ func GetRepositories(uid int64, private bool) ([]*Repository, error) {
 
 // GetRecentUpdatedRepositories returns the list of repositories that are recently updated.
 func GetRecentUpdatedRepositories() (repos []*Repository, err error) {
-	err = orm.Where("is_private=?", false).Limit(5).Desc("updated").Find(&repos)
+	err = x.Where("is_private=?", false).Limit(5).Desc("updated").Find(&repos)
 	return repos, err
 }
 
 // GetRepositoryCount returns the total number of repositories of user.
 func GetRepositoryCount(user *User) (int64, error) {
-	return orm.Count(&Repository{OwnerId: user.Id})
+	return x.Count(&Repository{OwnerId: user.Id})
 }
 
 // GetCollaboratorNames returns a list of user name of repository's collaborators.
 func GetCollaboratorNames(repoName string) ([]string, error) {
 	accesses := make([]*Access, 0, 10)
-	if err := orm.Find(&accesses, &Access{RepoName: strings.ToLower(repoName)}); err != nil {
+	if err := x.Find(&accesses, &Access{RepoName: strings.ToLower(repoName)}); err != nil {
 		return nil, err
 	}
 
@@ -847,7 +847,7 @@ func GetCollaboratorNames(repoName string) ([]string, error) {
 func GetCollaborativeRepos(uname string) ([]*Repository, error) {
 	uname = strings.ToLower(uname)
 	accesses := make([]*Access, 0, 10)
-	if err := orm.Find(&accesses, &Access{UserName: uname}); err != nil {
+	if err := x.Find(&accesses, &Access{UserName: uname}); err != nil {
 		return nil, err
 	}
 
@@ -876,7 +876,7 @@ func GetCollaborativeRepos(uname string) ([]*Repository, error) {
 // GetCollaborators returns a list of users of repository's collaborators.
 func GetCollaborators(repoName string) (us []*User, err error) {
 	accesses := make([]*Access, 0, 10)
-	if err = orm.Find(&accesses, &Access{RepoName: strings.ToLower(repoName)}); err != nil {
+	if err = x.Find(&accesses, &Access{RepoName: strings.ToLower(repoName)}); err != nil {
 		return nil, err
 	}
 
@@ -900,18 +900,18 @@ type Watch struct {
 // Watch or unwatch repository.
 func WatchRepo(uid, rid int64, watch bool) (err error) {
 	if watch {
-		if _, err = orm.Insert(&Watch{RepoId: rid, UserId: uid}); err != nil {
+		if _, err = x.Insert(&Watch{RepoId: rid, UserId: uid}); err != nil {
 			return err
 		}
 
 		rawSql := "UPDATE `repository` SET num_watches = num_watches + 1 WHERE id = ?"
-		_, err = orm.Exec(rawSql, rid)
+		_, err = x.Exec(rawSql, rid)
 	} else {
-		if _, err = orm.Delete(&Watch{0, uid, rid}); err != nil {
+		if _, err = x.Delete(&Watch{0, uid, rid}); err != nil {
 			return err
 		}
 		rawSql := "UPDATE `repository` SET num_watches = num_watches - 1 WHERE id = ?"
-		_, err = orm.Exec(rawSql, rid)
+		_, err = x.Exec(rawSql, rid)
 	}
 	return err
 }
@@ -919,7 +919,7 @@ func WatchRepo(uid, rid int64, watch bool) (err error) {
 // GetWatchers returns all watchers of given repository.
 func GetWatchers(rid int64) ([]*Watch, error) {
 	watches := make([]*Watch, 0, 10)
-	err := orm.Find(&watches, &Watch{RepoId: rid})
+	err := x.Find(&watches, &Watch{RepoId: rid})
 	return watches, err
 }
 
@@ -933,7 +933,7 @@ func NotifyWatchers(act *Action) error {
 
 	// Add feed for actioner.
 	act.UserId = act.ActUserId
-	if _, err = orm.InsertOne(act); err != nil {
+	if _, err = x.InsertOne(act); err != nil {
 		return errors.New("repo.NotifyWatchers(create action): " + err.Error())
 	}
 
@@ -944,7 +944,7 @@ func NotifyWatchers(act *Action) error {
 
 		act.Id = 0
 		act.UserId = watches[i].UserId
-		if _, err = orm.InsertOne(act); err != nil {
+		if _, err = x.InsertOne(act); err != nil {
 			return errors.New("repo.NotifyWatchers(create action): " + err.Error())
 		}
 	}
@@ -953,7 +953,7 @@ func NotifyWatchers(act *Action) error {
 
 // IsWatching checks if user has watched given repository.
 func IsWatching(uid, rid int64) bool {
-	has, _ := orm.Get(&Watch{0, uid, rid})
+	has, _ := x.Get(&Watch{0, uid, rid})
 	return has
 }
 
diff --git a/models/user.go b/models/user.go
index 04ea1fd692..50d81c942d 100644
--- a/models/user.go
+++ b/models/user.go
@@ -110,7 +110,7 @@ func IsUserExist(name string) (bool, error) {
 	if len(name) == 0 {
 		return false, nil
 	}
-	return orm.Get(&User{LowerName: strings.ToLower(name)})
+	return x.Get(&User{LowerName: strings.ToLower(name)})
 }
 
 // IsEmailUsed returns true if the e-mail has been used.
@@ -118,7 +118,7 @@ func IsEmailUsed(email string) (bool, error) {
 	if len(email) == 0 {
 		return false, nil
 	}
-	return orm.Get(&User{Email: email})
+	return x.Get(&User{Email: email})
 }
 
 // GetUserSalt returns a user salt token
@@ -153,10 +153,10 @@ func RegisterUser(user *User) (*User, error) {
 	user.Rands = GetUserSalt()
 	user.Salt = GetUserSalt()
 	user.EncodePasswd()
-	if _, err = orm.Insert(user); err != nil {
+	if _, err = x.Insert(user); err != nil {
 		return nil, err
 	} else if err = os.MkdirAll(UserPath(user.Name), os.ModePerm); err != nil {
-		if _, err := orm.Id(user.Id).Delete(&User{}); err != nil {
+		if _, err := x.Id(user.Id).Delete(&User{}); err != nil {
 			return nil, errors.New(fmt.Sprintf(
 				"both create userpath %s and delete table record faild: %v", user.Name, err))
 		}
@@ -166,7 +166,7 @@ func RegisterUser(user *User) (*User, error) {
 	if user.Id == 1 {
 		user.IsAdmin = true
 		user.IsActive = true
-		_, err = orm.Id(user.Id).UseBool().Update(user)
+		_, err = x.Id(user.Id).UseBool().Update(user)
 	}
 	return user, err
 }
@@ -174,7 +174,7 @@ func RegisterUser(user *User) (*User, error) {
 // GetUsers returns given number of user objects with offset.
 func GetUsers(num, offset int) ([]User, error) {
 	users := make([]User, 0, num)
-	err := orm.Limit(num, offset).Asc("id").Find(&users)
+	err := x.Limit(num, offset).Asc("id").Find(&users)
 	return users, err
 }
 
@@ -218,11 +218,11 @@ func ChangeUserName(user *User, newUserName string) (err error) {
 
 	// Update accesses of user.
 	accesses := make([]Access, 0, 10)
-	if err = orm.Find(&accesses, &Access{UserName: user.LowerName}); err != nil {
+	if err = x.Find(&accesses, &Access{UserName: user.LowerName}); err != nil {
 		return err
 	}
 
-	sess := orm.NewSession()
+	sess := x.NewSession()
 	defer sess.Close()
 	if err = sess.Begin(); err != nil {
 		return err
@@ -245,7 +245,7 @@ func ChangeUserName(user *User, newUserName string) (err error) {
 	for i := range repos {
 		accesses = make([]Access, 0, 10)
 		// Update accesses of user repository.
-		if err = orm.Find(&accesses, &Access{RepoName: user.LowerName + "/" + repos[i].LowerName}); err != nil {
+		if err = x.Find(&accesses, &Access{RepoName: user.LowerName + "/" + repos[i].LowerName}); err != nil {
 			return err
 		}
 
@@ -278,7 +278,7 @@ func UpdateUser(u *User) (err error) {
 		u.Website = u.Website[:255]
 	}
 
-	_, err = orm.Id(u.Id).AllCols().Update(u)
+	_, err = x.Id(u.Id).AllCols().Update(u)
 	return err
 }
 
@@ -295,33 +295,33 @@ func DeleteUser(user *User) error {
 	// TODO: check issues, other repos' commits
 
 	// Delete all followers.
-	if _, err = orm.Delete(&Follow{FollowId: user.Id}); err != nil {
+	if _, err = x.Delete(&Follow{FollowId: user.Id}); err != nil {
 		return err
 	}
 
 	// Delete oauth2.
-	if _, err = orm.Delete(&Oauth2{Uid: user.Id}); err != nil {
+	if _, err = x.Delete(&Oauth2{Uid: user.Id}); err != nil {
 		return err
 	}
 
 	// Delete all feeds.
-	if _, err = orm.Delete(&Action{UserId: user.Id}); err != nil {
+	if _, err = x.Delete(&Action{UserId: user.Id}); err != nil {
 		return err
 	}
 
 	// Delete all watches.
-	if _, err = orm.Delete(&Watch{UserId: user.Id}); err != nil {
+	if _, err = x.Delete(&Watch{UserId: user.Id}); err != nil {
 		return err
 	}
 
 	// Delete all accesses.
-	if _, err = orm.Delete(&Access{UserName: user.LowerName}); err != nil {
+	if _, err = x.Delete(&Access{UserName: user.LowerName}); err != nil {
 		return err
 	}
 
 	// Delete all SSH keys.
 	keys := make([]*PublicKey, 0, 10)
-	if err = orm.Find(&keys, &PublicKey{OwnerId: user.Id}); err != nil {
+	if err = x.Find(&keys, &PublicKey{OwnerId: user.Id}); err != nil {
 		return err
 	}
 	for _, key := range keys {
@@ -335,7 +335,13 @@ func DeleteUser(user *User) error {
 		return err
 	}
 
-	_, err = orm.Delete(user)
+	_, err = x.Delete(user)
+	return err
+}
+
+// DeleteInactivateUsers deletes all inactivate users.
+func DeleteInactivateUsers() error {
+	_, err := x.Where("is_active=?", false).Delete(new(User))
 	return err
 }
 
@@ -347,7 +353,7 @@ func UserPath(userName string) string {
 func GetUserByKeyId(keyId int64) (*User, error) {
 	user := new(User)
 	rawSql := "SELECT a.* FROM `user` AS a, public_key AS b WHERE a.id = b.owner_id AND b.id=?"
-	has, err := orm.Sql(rawSql, keyId).Get(user)
+	has, err := x.Sql(rawSql, keyId).Get(user)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -359,7 +365,7 @@ func GetUserByKeyId(keyId int64) (*User, error) {
 // GetUserById returns the user object by given ID if exists.
 func GetUserById(id int64) (*User, error) {
 	u := new(User)
-	has, err := orm.Id(id).Get(u)
+	has, err := x.Id(id).Get(u)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -374,7 +380,7 @@ func GetUserByName(name string) (*User, error) {
 		return nil, ErrUserNotExist
 	}
 	user := &User{LowerName: strings.ToLower(name)}
-	has, err := orm.Get(user)
+	has, err := x.Get(user)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -415,7 +421,7 @@ func GetUserByEmail(email string) (*User, error) {
 		return nil, ErrUserNotExist
 	}
 	user := &User{Email: strings.ToLower(email)}
-	has, err := orm.Get(user)
+	has, err := x.Get(user)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -439,7 +445,7 @@ func SearchUserByName(key string, limit int) (us []*User, err error) {
 	key = strings.ToLower(key)
 
 	us = make([]*User, 0, limit)
-	err = orm.Limit(limit).Where("lower_name like '%" + key + "%'").Find(&us)
+	err = x.Limit(limit).Where("lower_name like '%" + key + "%'").Find(&us)
 	return us, err
 }
 
@@ -452,7 +458,7 @@ type Follow struct {
 
 // FollowUser marks someone be another's follower.
 func FollowUser(userId int64, followId int64) (err error) {
-	session := orm.NewSession()
+	session := x.NewSession()
 	defer session.Close()
 	session.Begin()
 
@@ -477,7 +483,7 @@ func FollowUser(userId int64, followId int64) (err error) {
 
 // UnFollowUser unmarks someone be another's follower.
 func UnFollowUser(userId int64, unFollowId int64) (err error) {
-	session := orm.NewSession()
+	session := x.NewSession()
 	defer session.Close()
 	session.Begin()
 
diff --git a/models/webhook.go b/models/webhook.go
index ffd47c8f9b..9044befba2 100644
--- a/models/webhook.go
+++ b/models/webhook.go
@@ -68,14 +68,14 @@ func (w *Webhook) HasPushEvent() bool {
 
 // CreateWebhook creates a new web hook.
 func CreateWebhook(w *Webhook) error {
-	_, err := orm.Insert(w)
+	_, err := x.Insert(w)
 	return err
 }
 
 // GetWebhookById returns webhook by given ID.
 func GetWebhookById(hookId int64) (*Webhook, error) {
 	w := &Webhook{Id: hookId}
-	has, err := orm.Get(w)
+	has, err := x.Get(w)
 	if err != nil {
 		return nil, err
 	} else if !has {
@@ -86,25 +86,25 @@ func GetWebhookById(hookId int64) (*Webhook, error) {
 
 // GetActiveWebhooksByRepoId returns all active webhooks of repository.
 func GetActiveWebhooksByRepoId(repoId int64) (ws []*Webhook, err error) {
-	err = orm.Find(&ws, &Webhook{RepoId: repoId, IsActive: true})
+	err = x.Find(&ws, &Webhook{RepoId: repoId, IsActive: true})
 	return ws, err
 }
 
 // GetWebhooksByRepoId returns all webhooks of repository.
 func GetWebhooksByRepoId(repoId int64) (ws []*Webhook, err error) {
-	err = orm.Find(&ws, &Webhook{RepoId: repoId})
+	err = x.Find(&ws, &Webhook{RepoId: repoId})
 	return ws, err
 }
 
 // UpdateWebhook updates information of webhook.
 func UpdateWebhook(w *Webhook) error {
-	_, err := orm.AllCols().Update(w)
+	_, err := x.AllCols().Update(w)
 	return err
 }
 
 // DeleteWebhook deletes webhook of repository.
 func DeleteWebhook(hookId int64) error {
-	_, err := orm.Delete(&Webhook{Id: hookId})
+	_, err := x.Delete(&Webhook{Id: hookId})
 	return err
 }
 
@@ -174,20 +174,20 @@ func CreateHookTask(t *HookTask) error {
 		return err
 	}
 	t.PayloadContent = string(data)
-	_, err = orm.Insert(t)
+	_, err = x.Insert(t)
 	return err
 }
 
 // UpdateHookTask updates information of hook task.
 func UpdateHookTask(t *HookTask) error {
-	_, err := orm.AllCols().Update(t)
+	_, err := x.AllCols().Update(t)
 	return err
 }
 
 // DeliverHooks checks and delivers undelivered hooks.
 func DeliverHooks() {
 	timeout := time.Duration(setting.WebhookDeliverTimeout) * time.Second
-	orm.Where("is_deliveried=?", false).Iterate(new(HookTask),
+	x.Where("is_deliveried=?", false).Iterate(new(HookTask),
 		func(idx int, bean interface{}) error {
 			t := bean.(*HookTask)
 			// Only support JSON now.