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345 lines
10 KiB
345 lines
10 KiB
// Copyright 2016 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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import (
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"errors"
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"fmt"
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"reflect"
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"strconv"
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"strings"
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"github.com/go-xorm/builder"
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"github.com/go-xorm/core"
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)
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func (session *Session) cacheUpdate(sqlStr string, args ...interface{}) error {
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if session.Statement.RefTable == nil ||
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session.Tx != nil {
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return ErrCacheFailed
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}
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oldhead, newsql := session.Statement.convertUpdateSQL(sqlStr)
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if newsql == "" {
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return ErrCacheFailed
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}
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for _, filter := range session.Engine.dialect.Filters() {
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newsql = filter.Do(newsql, session.Engine.dialect, session.Statement.RefTable)
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}
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session.Engine.logger.Debug("[cacheUpdate] new sql", oldhead, newsql)
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var nStart int
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if len(args) > 0 {
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if strings.Index(sqlStr, "?") > -1 {
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nStart = strings.Count(oldhead, "?")
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} else {
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// only for pq, TODO: if any other databse?
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nStart = strings.Count(oldhead, "$")
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}
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}
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table := session.Statement.RefTable
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cacher := session.Engine.getCacher2(table)
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tableName := session.Statement.TableName()
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session.Engine.logger.Debug("[cacheUpdate] get cache sql", newsql, args[nStart:])
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ids, err := core.GetCacheSql(cacher, tableName, newsql, args[nStart:])
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if err != nil {
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rows, err := session.DB().Query(newsql, args[nStart:]...)
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if err != nil {
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return err
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}
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defer rows.Close()
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ids = make([]core.PK, 0)
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for rows.Next() {
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var res = make([]string, len(table.PrimaryKeys))
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err = rows.ScanSlice(&res)
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if err != nil {
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return err
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}
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var pk core.PK = make([]interface{}, len(table.PrimaryKeys))
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for i, col := range table.PKColumns() {
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if col.SQLType.IsNumeric() {
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n, err := strconv.ParseInt(res[i], 10, 64)
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if err != nil {
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return err
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}
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pk[i] = n
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} else if col.SQLType.IsText() {
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pk[i] = res[i]
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} else {
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return errors.New("not supported")
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}
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}
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ids = append(ids, pk)
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}
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session.Engine.logger.Debug("[cacheUpdate] find updated id", ids)
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} /*else {
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session.Engine.LogDebug("[xorm:cacheUpdate] del cached sql:", tableName, newsql, args)
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cacher.DelIds(tableName, genSqlKey(newsql, args))
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}*/
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for _, id := range ids {
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sid, err := id.ToString()
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if err != nil {
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return err
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}
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if bean := cacher.GetBean(tableName, sid); bean != nil {
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sqls := splitNNoCase(sqlStr, "where", 2)
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if len(sqls) == 0 || len(sqls) > 2 {
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return ErrCacheFailed
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}
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sqls = splitNNoCase(sqls[0], "set", 2)
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if len(sqls) != 2 {
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return ErrCacheFailed
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}
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kvs := strings.Split(strings.TrimSpace(sqls[1]), ",")
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for idx, kv := range kvs {
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sps := strings.SplitN(kv, "=", 2)
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sps2 := strings.Split(sps[0], ".")
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colName := sps2[len(sps2)-1]
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if strings.Contains(colName, "`") {
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colName = strings.TrimSpace(strings.Replace(colName, "`", "", -1))
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} else if strings.Contains(colName, session.Engine.QuoteStr()) {
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colName = strings.TrimSpace(strings.Replace(colName, session.Engine.QuoteStr(), "", -1))
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} else {
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session.Engine.logger.Debug("[cacheUpdate] cannot find column", tableName, colName)
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return ErrCacheFailed
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}
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if col := table.GetColumn(colName); col != nil {
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fieldValue, err := col.ValueOf(bean)
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if err != nil {
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session.Engine.logger.Error(err)
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} else {
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session.Engine.logger.Debug("[cacheUpdate] set bean field", bean, colName, fieldValue.Interface())
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if col.IsVersion && session.Statement.checkVersion {
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fieldValue.SetInt(fieldValue.Int() + 1)
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} else {
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fieldValue.Set(reflect.ValueOf(args[idx]))
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}
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}
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} else {
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session.Engine.logger.Errorf("[cacheUpdate] ERROR: column %v is not table %v's",
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colName, table.Name)
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}
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}
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session.Engine.logger.Debug("[cacheUpdate] update cache", tableName, id, bean)
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cacher.PutBean(tableName, sid, bean)
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}
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}
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session.Engine.logger.Debug("[cacheUpdate] clear cached table sql:", tableName)
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cacher.ClearIds(tableName)
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return nil
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}
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// Update records, bean's non-empty fields are updated contents,
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// condiBean' non-empty filds are conditions
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// CAUTION:
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// 1.bool will defaultly be updated content nor conditions
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// You should call UseBool if you have bool to use.
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// 2.float32 & float64 may be not inexact as conditions
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func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int64, error) {
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defer session.resetStatement()
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if session.IsAutoClose {
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defer session.Close()
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}
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v := rValue(bean)
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t := v.Type()
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var colNames []string
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var args []interface{}
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// handle before update processors
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for _, closure := range session.beforeClosures {
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closure(bean)
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}
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cleanupProcessorsClosures(&session.beforeClosures) // cleanup after used
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if processor, ok := interface{}(bean).(BeforeUpdateProcessor); ok {
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processor.BeforeUpdate()
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}
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// --
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var err error
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var isMap = t.Kind() == reflect.Map
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var isStruct = t.Kind() == reflect.Struct
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if isStruct {
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session.Statement.setRefValue(v)
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if len(session.Statement.TableName()) <= 0 {
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return 0, ErrTableNotFound
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}
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if session.Statement.ColumnStr == "" {
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colNames, args = buildUpdates(session.Engine, session.Statement.RefTable, bean, false, false,
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false, false, session.Statement.allUseBool, session.Statement.useAllCols,
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session.Statement.mustColumnMap, session.Statement.nullableMap,
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session.Statement.columnMap, true, session.Statement.unscoped)
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} else {
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colNames, args, err = genCols(session.Statement.RefTable, session, bean, true, true)
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if err != nil {
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return 0, err
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}
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}
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} else if isMap {
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colNames = make([]string, 0)
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args = make([]interface{}, 0)
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bValue := reflect.Indirect(reflect.ValueOf(bean))
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for _, v := range bValue.MapKeys() {
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colNames = append(colNames, session.Engine.Quote(v.String())+" = ?")
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args = append(args, bValue.MapIndex(v).Interface())
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}
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} else {
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return 0, ErrParamsType
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}
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table := session.Statement.RefTable
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if session.Statement.UseAutoTime && table != nil && table.Updated != "" {
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colNames = append(colNames, session.Engine.Quote(table.Updated)+" = ?")
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col := table.UpdatedColumn()
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val, t := session.Engine.NowTime2(col.SQLType.Name)
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args = append(args, val)
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var colName = col.Name
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if isStruct {
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session.afterClosures = append(session.afterClosures, func(bean interface{}) {
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col := table.GetColumn(colName)
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setColumnTime(bean, col, t)
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})
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}
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}
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//for update action to like "column = column + ?"
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incColumns := session.Statement.getInc()
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for _, v := range incColumns {
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colNames = append(colNames, session.Engine.Quote(v.colName)+" = "+session.Engine.Quote(v.colName)+" + ?")
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args = append(args, v.arg)
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}
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//for update action to like "column = column - ?"
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decColumns := session.Statement.getDec()
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for _, v := range decColumns {
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colNames = append(colNames, session.Engine.Quote(v.colName)+" = "+session.Engine.Quote(v.colName)+" - ?")
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args = append(args, v.arg)
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}
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//for update action to like "column = expression"
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exprColumns := session.Statement.getExpr()
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for _, v := range exprColumns {
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colNames = append(colNames, session.Engine.Quote(v.colName)+" = "+v.expr)
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}
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session.Statement.processIDParam()
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var autoCond builder.Cond
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if !session.Statement.noAutoCondition && len(condiBean) > 0 {
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var err error
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autoCond, err = session.Statement.buildConds(session.Statement.RefTable, condiBean[0], true, true, false, true, false)
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if err != nil {
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return 0, err
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}
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}
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st := session.Statement
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defer session.resetStatement()
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var sqlStr string
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var condArgs []interface{}
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var condSQL string
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cond := session.Statement.cond.And(autoCond)
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doIncVer := false
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var verValue *reflect.Value
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if table != nil && table.Version != "" && session.Statement.checkVersion {
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verValue, err = table.VersionColumn().ValueOf(bean)
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if err != nil {
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return 0, err
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}
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cond = cond.And(builder.Eq{session.Engine.Quote(table.Version): verValue.Interface()})
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condSQL, condArgs, _ = builder.ToSQL(cond)
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if len(condSQL) > 0 {
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condSQL = "WHERE " + condSQL
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}
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if st.LimitN > 0 {
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condSQL = condSQL + fmt.Sprintf(" LIMIT %d", st.LimitN)
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}
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sqlStr = fmt.Sprintf("UPDATE %v SET %v, %v %v",
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session.Engine.Quote(session.Statement.TableName()),
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strings.Join(colNames, ", "),
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session.Engine.Quote(table.Version)+" = "+session.Engine.Quote(table.Version)+" + 1",
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condSQL)
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doIncVer = true
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} else {
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condSQL, condArgs, _ = builder.ToSQL(cond)
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if len(condSQL) > 0 {
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condSQL = "WHERE " + condSQL
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}
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if st.LimitN > 0 {
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condSQL = condSQL + fmt.Sprintf(" LIMIT %d", st.LimitN)
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}
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sqlStr = fmt.Sprintf("UPDATE %v SET %v %v",
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session.Engine.Quote(session.Statement.TableName()),
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strings.Join(colNames, ", "),
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condSQL)
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}
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res, err := session.exec(sqlStr, append(args, condArgs...)...)
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if err != nil {
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return 0, err
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} else if doIncVer {
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if verValue != nil && verValue.IsValid() && verValue.CanSet() {
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verValue.SetInt(verValue.Int() + 1)
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}
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}
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if table != nil {
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if cacher := session.Engine.getCacher2(table); cacher != nil && session.Statement.UseCache {
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cacher.ClearIds(session.Statement.TableName())
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cacher.ClearBeans(session.Statement.TableName())
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}
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}
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// handle after update processors
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if session.IsAutoCommit {
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for _, closure := range session.afterClosures {
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closure(bean)
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}
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if processor, ok := interface{}(bean).(AfterUpdateProcessor); ok {
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session.Engine.logger.Debug("[event]", session.Statement.TableName(), " has after update processor")
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processor.AfterUpdate()
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}
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} else {
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lenAfterClosures := len(session.afterClosures)
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if lenAfterClosures > 0 {
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if value, has := session.afterUpdateBeans[bean]; has && value != nil {
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*value = append(*value, session.afterClosures...)
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} else {
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afterClosures := make([]func(interface{}), lenAfterClosures)
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copy(afterClosures, session.afterClosures)
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// FIXME: if bean is a map type, it will panic because map cannot be as map key
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session.afterUpdateBeans[bean] = &afterClosures
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}
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} else {
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if _, ok := interface{}(bean).(AfterUpdateProcessor); ok {
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session.afterUpdateBeans[bean] = nil
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}
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}
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}
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cleanupProcessorsClosures(&session.afterClosures) // cleanup after used
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// --
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return res.RowsAffected()
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}
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