forked from gitea/gitea
83 lines
2.4 KiB
Go
83 lines
2.4 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"fmt"
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"code.gitea.io/gitea/modules/setting"
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"xorm.io/xorm"
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)
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func increaseLanguageField(x *xorm.Engine) error {
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type LanguageStat struct {
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RepoID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
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Language string `xorm:"VARCHAR(50) UNIQUE(s) INDEX NOT NULL"`
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}
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if err := x.Sync2(new(LanguageStat)); err != nil {
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return err
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}
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if setting.Database.UseSQLite3 {
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// SQLite maps VARCHAR to TEXT without size so we're done
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return nil
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}
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// need to get the correct type for the new column
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inferredTable, err := x.TableInfo(new(LanguageStat))
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if err != nil {
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return err
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}
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column := inferredTable.GetColumn("language")
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sqlType := x.Dialect().SQLType(column)
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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return err
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}
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switch {
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case setting.Database.UseMySQL:
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE language_stat MODIFY COLUMN language %s", sqlType)); err != nil {
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return err
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}
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case setting.Database.UseMSSQL:
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// Yet again MSSQL just has to be awkward.
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// Here we have to drop the constraints first and then rebuild them
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constraints := make([]string, 0)
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if err := sess.SQL(`SELECT i.name AS Name
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FROM sys.indexes i INNER JOIN sys.index_columns ic
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ON i.index_id = ic.index_id AND i.object_id = ic.object_id
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INNER JOIN sys.tables AS t
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ON t.object_id = i.object_id
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INNER JOIN sys.columns c
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ON t.object_id = c.object_id AND ic.column_id = c.column_id
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WHERE t.name = 'language_stat' AND c.name = 'language'`).Find(&constraints); err != nil {
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return fmt.Errorf("Find constraints: %v", err)
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}
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for _, constraint := range constraints {
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if _, err := sess.Exec(fmt.Sprintf("DROP INDEX [%s] ON `language_stat`", constraint)); err != nil {
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return fmt.Errorf("Drop table `language_stat` constraint `%s`: %v", constraint, err)
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}
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}
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE language_stat ALTER COLUMN language %s", sqlType)); err != nil {
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return err
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}
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// Finally restore the constraint
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if err := sess.CreateUniques(new(LanguageStat)); err != nil {
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return err
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}
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case setting.Database.UsePostgreSQL:
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE language_stat ALTER COLUMN language TYPE %s", sqlType)); err != nil {
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return err
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}
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}
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return sess.Commit()
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}
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