mirror of
https://github.com/astaxie/beego.git
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184 lines
4.9 KiB
Go
184 lines
4.9 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package orm
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import (
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"fmt"
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"reflect"
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"strings"
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)
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// mysql operators.
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var mysqlOperators = map[string]string{
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"exact": "= ?",
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"iexact": "LIKE ?",
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"contains": "LIKE BINARY ?",
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"icontains": "LIKE ?",
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// "regex": "REGEXP BINARY ?",
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// "iregex": "REGEXP ?",
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"gt": "> ?",
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"gte": ">= ?",
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"lt": "< ?",
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"lte": "<= ?",
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"eq": "= ?",
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"ne": "!= ?",
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"startswith": "LIKE BINARY ?",
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"endswith": "LIKE BINARY ?",
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"istartswith": "LIKE ?",
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"iendswith": "LIKE ?",
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}
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// mysql column field types.
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var mysqlTypes = map[string]string{
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"auto": "AUTO_INCREMENT NOT NULL PRIMARY KEY",
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"pk": "NOT NULL PRIMARY KEY",
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"bool": "bool",
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"string": "varchar(%d)",
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"string-char": "char(%d)",
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"string-text": "longtext",
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"time.Time-date": "date",
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"time.Time": "datetime",
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"int8": "tinyint",
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"int16": "smallint",
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"int32": "integer",
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"int64": "bigint",
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"uint8": "tinyint unsigned",
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"uint16": "smallint unsigned",
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"uint32": "integer unsigned",
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"uint64": "bigint unsigned",
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"float64": "double precision",
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"float64-decimal": "numeric(%d, %d)",
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}
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// mysql dbBaser implementation.
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type dbBaseMysql struct {
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dbBase
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}
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var _ dbBaser = new(dbBaseMysql)
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// get mysql operator.
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func (d *dbBaseMysql) OperatorSQL(operator string) string {
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return mysqlOperators[operator]
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}
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// get mysql table field types.
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func (d *dbBaseMysql) DbTypes() map[string]string {
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return mysqlTypes
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}
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// show table sql for mysql.
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func (d *dbBaseMysql) ShowTablesQuery() string {
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return "SELECT table_name FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema = DATABASE()"
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}
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// show columns sql of table for mysql.
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func (d *dbBaseMysql) ShowColumnsQuery(table string) string {
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return fmt.Sprintf("SELECT COLUMN_NAME, COLUMN_TYPE, IS_NULLABLE FROM information_schema.columns "+
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"WHERE table_schema = DATABASE() AND table_name = '%s'", table)
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}
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// execute sql to check index exist.
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func (d *dbBaseMysql) IndexExists(db dbQuerier, table string, name string) bool {
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row := db.QueryRow("SELECT count(*) FROM information_schema.statistics "+
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"WHERE table_schema = DATABASE() AND table_name = ? AND index_name = ?", table, name)
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var cnt int
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row.Scan(&cnt)
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return cnt > 0
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}
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// InsertOrUpdate a row
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// If your primary key or unique column conflict will update
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// If no will insert
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// Add "`" for mysql sql building
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func (d *dbBaseMysql) InsertOrUpdate(q dbQuerier, mi *modelInfo, ind reflect.Value, a *alias, args ...string) (int64, error) {
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var iouStr string
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argsMap := map[string]string{}
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iouStr = "ON DUPLICATE KEY UPDATE"
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//Get on the key-value pairs
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for _, v := range args {
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kv := strings.Split(v, "=")
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if len(kv) == 2 {
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argsMap[strings.ToLower(kv[0])] = kv[1]
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}
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}
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isMulti := false
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names := make([]string, 0, len(mi.fields.dbcols)-1)
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Q := d.ins.TableQuote()
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values, _, err := d.collectValues(mi, ind, mi.fields.dbcols, true, true, &names, a.TZ)
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if err != nil {
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return 0, err
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}
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marks := make([]string, len(names))
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updateValues := make([]interface{}, 0)
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updates := make([]string, len(names))
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for i, v := range names {
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marks[i] = "?"
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valueStr := argsMap[strings.ToLower(v)]
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if valueStr != "" {
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updates[i] = "`" + v + "`" + "=" + valueStr
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} else {
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updates[i] = "`" + v + "`" + "=?"
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updateValues = append(updateValues, values[i])
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}
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}
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values = append(values, updateValues...)
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sep := fmt.Sprintf("%s, %s", Q, Q)
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qmarks := strings.Join(marks, ", ")
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qupdates := strings.Join(updates, ", ")
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columns := strings.Join(names, sep)
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multi := len(values) / len(names)
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if isMulti {
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qmarks = strings.Repeat(qmarks+"), (", multi-1) + qmarks
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}
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//conflitValue maybe is a int,can`t use fmt.Sprintf
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query := fmt.Sprintf("INSERT INTO %s%s%s (%s%s%s) VALUES (%s) %s "+qupdates, Q, mi.table, Q, Q, columns, Q, qmarks, iouStr)
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d.ins.ReplaceMarks(&query)
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if isMulti || !d.ins.HasReturningID(mi, &query) {
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res, err := q.Exec(query, values...)
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if err == nil {
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if isMulti {
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return res.RowsAffected()
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}
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return res.LastInsertId()
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}
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return 0, err
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}
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row := q.QueryRow(query, values...)
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var id int64
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err = row.Scan(&id)
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return id, err
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}
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// create new mysql dbBaser.
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func newdbBaseMysql() dbBaser {
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b := new(dbBaseMysql)
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b.ins = b
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return b
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}
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