mirror of
https://github.com/astaxie/beego.git
synced 2024-11-23 03:40:55 +00:00
105 lines
3.0 KiB
Go
105 lines
3.0 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package orm
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
// mysql operators.
|
|
var mysqlOperators = map[string]string{
|
|
"exact": "= ?",
|
|
"iexact": "LIKE ?",
|
|
"contains": "LIKE BINARY ?",
|
|
"icontains": "LIKE ?",
|
|
// "regex": "REGEXP BINARY ?",
|
|
// "iregex": "REGEXP ?",
|
|
"gt": "> ?",
|
|
"gte": ">= ?",
|
|
"lt": "< ?",
|
|
"lte": "<= ?",
|
|
"eq": "= ?",
|
|
"ne": "!= ?",
|
|
"startswith": "LIKE BINARY ?",
|
|
"endswith": "LIKE BINARY ?",
|
|
"istartswith": "LIKE ?",
|
|
"iendswith": "LIKE ?",
|
|
}
|
|
|
|
// mysql column field types.
|
|
var mysqlTypes = map[string]string{
|
|
"auto": "AUTO_INCREMENT NOT NULL PRIMARY KEY",
|
|
"pk": "NOT NULL PRIMARY KEY",
|
|
"bool": "bool",
|
|
"string": "varchar(%d)",
|
|
"string-text": "longtext",
|
|
"time.Time-date": "date",
|
|
"time.Time": "datetime",
|
|
"int8": "tinyint",
|
|
"int16": "smallint",
|
|
"int32": "integer",
|
|
"int64": "bigint",
|
|
"uint8": "tinyint unsigned",
|
|
"uint16": "smallint unsigned",
|
|
"uint32": "integer unsigned",
|
|
"uint64": "bigint unsigned",
|
|
"float64": "double precision",
|
|
"float64-decimal": "numeric(%d, %d)",
|
|
}
|
|
|
|
// mysql dbBaser implementation.
|
|
type dbBaseMysql struct {
|
|
dbBase
|
|
}
|
|
|
|
var _ dbBaser = new(dbBaseMysql)
|
|
|
|
// get mysql operator.
|
|
func (d *dbBaseMysql) OperatorSQL(operator string) string {
|
|
return mysqlOperators[operator]
|
|
}
|
|
|
|
// get mysql table field types.
|
|
func (d *dbBaseMysql) DbTypes() map[string]string {
|
|
return mysqlTypes
|
|
}
|
|
|
|
// show table sql for mysql.
|
|
func (d *dbBaseMysql) ShowTablesQuery() string {
|
|
return "SELECT table_name FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema = DATABASE()"
|
|
}
|
|
|
|
// show columns sql of table for mysql.
|
|
func (d *dbBaseMysql) ShowColumnsQuery(table string) string {
|
|
return fmt.Sprintf("SELECT COLUMN_NAME, COLUMN_TYPE, IS_NULLABLE FROM information_schema.columns "+
|
|
"WHERE table_schema = DATABASE() AND table_name = '%s'", table)
|
|
}
|
|
|
|
// execute sql to check index exist.
|
|
func (d *dbBaseMysql) IndexExists(db dbQuerier, table string, name string) bool {
|
|
row := db.QueryRow("SELECT count(*) FROM information_schema.statistics "+
|
|
"WHERE table_schema = DATABASE() AND table_name = ? AND index_name = ?", table, name)
|
|
var cnt int
|
|
row.Scan(&cnt)
|
|
return cnt > 0
|
|
}
|
|
|
|
// create new mysql dbBaser.
|
|
func newdbBaseMysql() dbBaser {
|
|
b := new(dbBaseMysql)
|
|
b.ins = b
|
|
return b
|
|
}
|