mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-06 09:20:25 +08:00
41 lines
1.0 KiB
Go
41 lines
1.0 KiB
Go
package postgres
|
||
|
||
import (
|
||
"fmt"
|
||
"io"
|
||
"mayfly-go/internal/db/dbm/dbi"
|
||
"regexp"
|
||
"strings"
|
||
)
|
||
|
||
var (
|
||
// 提取pg默认值， 如：'id'::varchar 提取id ； '-1'::integer 提取-1
|
||
defaultValueRegexp = regexp.MustCompile(`'([^']*)'`)
|
||
)
|
||
|
||
func FixColumnDefault(column *dbi.Column) {
|
||
// 如果默认值带冒号，如：'id'::varchar
|
||
if column.ColumnDefault != "" && strings.Contains(column.ColumnDefault, "::") && !strings.HasPrefix(column.ColumnDefault, "nextval") {
|
||
match := defaultValueRegexp.FindStringSubmatch(column.ColumnDefault)
|
||
if len(match) > 1 {
|
||
column.ColumnDefault = match[1]
|
||
}
|
||
}
|
||
}
|
||
|
||
type DumpHelper struct {
|
||
dbi.DefaultDumpHelper
|
||
}
|
||
|
||
func (dh *DumpHelper) AfterInsert(writer io.Writer, tableName string, columns []dbi.Column) {
|
||
// 设置自增序列当前值
|
||
for _, column := range columns {
|
||
if column.AutoIncrement {
|
||
seq := fmt.Sprintf("SELECT setval('%s_%s_seq', (SELECT max(%s) FROM %s));\n", tableName, column.ColumnName, column.ColumnName, tableName)
|
||
writer.Write([]byte(seq))
|
||
}
|
||
}
|
||
|
||
writer.Write([]byte("COMMIT;\n"))
|
||
}
|