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Beego/orm/db_oracle.go
2016-03-10 21:23:13 +08:00

97 lines
2.6 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"
"strings"
)
// oracle operators.
var oracleOperators = map[string]string{
"exact": "= ?",
"gt": "> ?",
"gte": ">= ?",
"lt": "< ?",
"lte": "<= ?",
"//iendswith": "LIKE ?",
}
// oracle column field types.
var oracleTypes = map[string]string{
"pk": "NOT NULL PRIMARY KEY",
"bool": "bool",
"string": "VARCHAR2(%d)",
"string-text": "VARCHAR2(%d)",
"time.Time-date": "DATE",
"time.Time": "TIMESTAMP",
"int8": "INTEGER",
"int16": "INTEGER",
"int32": "INTEGER",
"int64": "INTEGER",
"uint8": "INTEGER",
"uint16": "INTEGER",
"uint32": "INTEGER",
"uint64": "INTEGER",
"float64": "NUMBER",
"float64-decimal": "NUMBER(%d, %d)",
}
// oracle dbBaser
type dbBaseOracle struct {
dbBase
}
var _ dbBaser = new(dbBaseOracle)
// create oracle dbBaser.
func newdbBaseOracle() dbBaser {
b := new(dbBaseOracle)
b.ins = b
return b
}
// OperatorSQL get oracle operator.
func (d *dbBaseOracle) OperatorSQL(operator string) string {
return oracleOperators[operator]
}
// DbTypes get oracle table field types.
func (d *dbBaseOracle) DbTypes() map[string]string {
return oracleTypes
}
//ShowTablesQuery show all the tables in database
func (d *dbBaseOracle) ShowTablesQuery() string {
return "SELECT TABLE_NAME FROM USER_TABLES"
}
// Oracle
func (d *dbBaseOracle) ShowColumnsQuery(table string) string {
return fmt.Sprintf("SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS "+
"WHERE TABLE_NAME ='%s'", strings.ToUpper(table))
}
// check index is exist
func (d *dbBaseOracle) IndexExists(db dbQuerier, table string, name string) bool {
row := db.QueryRow("SELECT COUNT(*) FROM USER_IND_COLUMNS, USER_INDEXES "+
"WHERE USER_IND_COLUMNS.INDEX_NAME = USER_INDEXES.INDEX_NAME "+
"AND USER_IND_COLUMNS.TABLE_NAME = ? AND USER_IND_COLUMNS.INDEX_NAME = ?", strings.ToUpper(table), strings.ToUpper(name))
var cnt int
row.Scan(&cnt)
return cnt > 0
}