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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package v1_13 //nolint
import (
"fmt"
"code.gitea.io/gitea/modules/setting"
"xorm.io/xorm"
)
func IncreaseLanguageField(x *xorm.Engine) error {
type LanguageStat struct {
RepoID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
Language string `xorm:"VARCHAR(50) UNIQUE(s) INDEX NOT NULL"`
}
if err := x.Sync2(new(LanguageStat)); err != nil {
return err
}
if setting.Database.Type.IsSQLite3() {
// SQLite maps VARCHAR to TEXT without size so we're done
return nil
}
// need to get the correct type for the new column
inferredTable, err := x.TableInfo(new(LanguageStat))
if err != nil {
return err
}
column := inferredTable.GetColumn("language")
sqlType := x.Dialect().SQLType(column)
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
switch {
case setting.Database.Type.IsMySQL():
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE language_stat MODIFY COLUMN language %s", sqlType)); err != nil {
return err
}
case setting.Database.Type.IsMSSQL():
// Yet again MSSQL just has to be awkward.
// Here we have to drop the constraints first and then rebuild them
constraints := make([]string, 0)
if err := sess.SQL(`SELECT i.name AS Name
FROM sys.indexes i INNER JOIN sys.index_columns ic
ON i.index_id = ic.index_id AND i.object_id = ic.object_id
INNER JOIN sys.tables AS t
ON t.object_id = i.object_id
INNER JOIN sys.columns c
ON t.object_id = c.object_id AND ic.column_id = c.column_id
WHERE t.name = 'language_stat' AND c.name = 'language'`).Find(&constraints); err != nil {
return fmt.Errorf("Find constraints: %w", err)
}
for _, constraint := range constraints {
if _, err := sess.Exec(fmt.Sprintf("DROP INDEX [%s] ON `language_stat`", constraint)); err != nil {
return fmt.Errorf("Drop table `language_stat` constraint `%s`: %w", constraint, err)
}
}
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE language_stat ALTER COLUMN language %s", sqlType)); err != nil {
return err
}
// Finally restore the constraint
if err := sess.CreateUniques(new(LanguageStat)); err != nil {
return err
}
case setting.Database.Type.IsPostgreSQL():
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE language_stat ALTER COLUMN language TYPE %s", sqlType)); err != nil {
return err
}
}
return sess.Commit()
}
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