6d811bcb14
* Hide not allowed Reactions * filter in query :D * use ` Co-Authored-By: Alexey 〒erentyev <axifnx@gmail.com> * update xorm v0.8.0 -> v0.8.1
1680 lines
45 KiB
Go
1680 lines
45 KiB
Go
// Copyright 2015 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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"bufio"
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"bytes"
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"context"
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"database/sql"
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"encoding/gob"
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"errors"
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"fmt"
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"io"
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"os"
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"reflect"
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"strconv"
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"strings"
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"sync"
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"time"
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"xorm.io/builder"
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"xorm.io/core"
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)
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// Engine is the major struct of xorm, it means a database manager.
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// Commonly, an application only need one engine
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type Engine struct {
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db *core.DB
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dialect core.Dialect
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ColumnMapper core.IMapper
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TableMapper core.IMapper
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TagIdentifier string
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Tables map[reflect.Type]*core.Table
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mutex *sync.RWMutex
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Cacher core.Cacher
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showSQL bool
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showExecTime bool
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logger core.ILogger
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TZLocation *time.Location // The timezone of the application
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DatabaseTZ *time.Location // The timezone of the database
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disableGlobalCache bool
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tagHandlers map[string]tagHandler
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engineGroup *EngineGroup
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cachers map[string]core.Cacher
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cacherLock sync.RWMutex
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defaultContext context.Context
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}
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func (engine *Engine) setCacher(tableName string, cacher core.Cacher) {
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engine.cacherLock.Lock()
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engine.cachers[tableName] = cacher
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engine.cacherLock.Unlock()
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}
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func (engine *Engine) SetCacher(tableName string, cacher core.Cacher) {
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engine.setCacher(tableName, cacher)
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}
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func (engine *Engine) getCacher(tableName string) core.Cacher {
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var cacher core.Cacher
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var ok bool
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engine.cacherLock.RLock()
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cacher, ok = engine.cachers[tableName]
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engine.cacherLock.RUnlock()
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if !ok && !engine.disableGlobalCache {
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cacher = engine.Cacher
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}
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return cacher
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}
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func (engine *Engine) GetCacher(tableName string) core.Cacher {
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return engine.getCacher(tableName)
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}
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// BufferSize sets buffer size for iterate
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func (engine *Engine) BufferSize(size int) *Session {
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session := engine.NewSession()
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session.isAutoClose = true
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return session.BufferSize(size)
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}
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// CondDeleted returns the conditions whether a record is soft deleted.
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func (engine *Engine) CondDeleted(colName string) builder.Cond {
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if engine.dialect.DBType() == core.MSSQL {
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return builder.IsNull{colName}
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}
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return builder.IsNull{colName}.Or(builder.Eq{colName: zeroTime1})
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}
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// ShowSQL show SQL statement or not on logger if log level is great than INFO
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func (engine *Engine) ShowSQL(show ...bool) {
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engine.logger.ShowSQL(show...)
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if len(show) == 0 {
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engine.showSQL = true
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} else {
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engine.showSQL = show[0]
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}
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}
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// ShowExecTime show SQL statement and execute time or not on logger if log level is great than INFO
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func (engine *Engine) ShowExecTime(show ...bool) {
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if len(show) == 0 {
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engine.showExecTime = true
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} else {
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engine.showExecTime = show[0]
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}
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}
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// Logger return the logger interface
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func (engine *Engine) Logger() core.ILogger {
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return engine.logger
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}
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// SetLogger set the new logger
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func (engine *Engine) SetLogger(logger core.ILogger) {
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engine.logger = logger
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engine.showSQL = logger.IsShowSQL()
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engine.dialect.SetLogger(logger)
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}
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// SetLogLevel sets the logger level
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func (engine *Engine) SetLogLevel(level core.LogLevel) {
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engine.logger.SetLevel(level)
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}
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// SetDisableGlobalCache disable global cache or not
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func (engine *Engine) SetDisableGlobalCache(disable bool) {
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if engine.disableGlobalCache != disable {
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engine.disableGlobalCache = disable
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}
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}
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// DriverName return the current sql driver's name
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func (engine *Engine) DriverName() string {
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return engine.dialect.DriverName()
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}
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// DataSourceName return the current connection string
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func (engine *Engine) DataSourceName() string {
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return engine.dialect.DataSourceName()
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}
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// SetMapper set the name mapping rules
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func (engine *Engine) SetMapper(mapper core.IMapper) {
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engine.SetTableMapper(mapper)
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engine.SetColumnMapper(mapper)
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}
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// SetTableMapper set the table name mapping rule
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func (engine *Engine) SetTableMapper(mapper core.IMapper) {
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engine.TableMapper = mapper
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}
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// SetColumnMapper set the column name mapping rule
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func (engine *Engine) SetColumnMapper(mapper core.IMapper) {
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engine.ColumnMapper = mapper
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}
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// SupportInsertMany If engine's database support batch insert records like
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// "insert into user values (name, age), (name, age)".
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// When the return is ture, then engine.Insert(&users) will
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// generate batch sql and exeute.
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func (engine *Engine) SupportInsertMany() bool {
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return engine.dialect.SupportInsertMany()
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}
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func (engine *Engine) quoteColumns(columnStr string) string {
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columns := strings.Split(columnStr, ",")
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for i := 0; i < len(columns); i++ {
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columns[i] = engine.Quote(strings.TrimSpace(columns[i]))
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}
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return strings.Join(columns, ",")
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}
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// Quote Use QuoteStr quote the string sql
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func (engine *Engine) Quote(value string) string {
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value = strings.TrimSpace(value)
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if len(value) == 0 {
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return value
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}
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buf := strings.Builder{}
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engine.QuoteTo(&buf, value)
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return buf.String()
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}
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// QuoteTo quotes string and writes into the buffer
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func (engine *Engine) QuoteTo(buf *strings.Builder, value string) {
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if buf == nil {
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return
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}
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value = strings.TrimSpace(value)
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if value == "" {
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return
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}
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quoteTo(buf, engine.dialect.Quote(""), value)
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}
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func quoteTo(buf *strings.Builder, quotePair string, value string) {
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if len(quotePair) < 2 { // no quote
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_, _ = buf.WriteString(value)
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return
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}
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prefix, suffix := quotePair[0], quotePair[1]
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i := 0
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for i < len(value) {
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// start of a token; might be already quoted
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if value[i] == '.' {
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_ = buf.WriteByte('.')
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i++
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} else if value[i] == prefix || value[i] == '`' {
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// Has quotes; skip/normalize `name` to prefix+name+sufix
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var ch byte
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if value[i] == prefix {
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ch = suffix
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} else {
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ch = '`'
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}
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i++
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_ = buf.WriteByte(prefix)
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for ; i < len(value) && value[i] != ch; i++ {
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_ = buf.WriteByte(value[i])
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}
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_ = buf.WriteByte(suffix)
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i++
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} else {
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// Requires quotes
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_ = buf.WriteByte(prefix)
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for ; i < len(value) && value[i] != '.'; i++ {
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_ = buf.WriteByte(value[i])
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}
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_ = buf.WriteByte(suffix)
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}
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}
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}
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func (engine *Engine) quote(sql string) string {
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return engine.dialect.Quote(sql)
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}
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// SqlType will be deprecated, please use SQLType instead
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//
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// Deprecated: use SQLType instead
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func (engine *Engine) SqlType(c *core.Column) string {
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return engine.SQLType(c)
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}
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// SQLType A simple wrapper to dialect's core.SqlType method
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func (engine *Engine) SQLType(c *core.Column) string {
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return engine.dialect.SqlType(c)
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}
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// AutoIncrStr Database's autoincrement statement
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func (engine *Engine) AutoIncrStr() string {
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return engine.dialect.AutoIncrStr()
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}
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// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
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func (engine *Engine) SetConnMaxLifetime(d time.Duration) {
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engine.db.SetConnMaxLifetime(d)
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}
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// SetMaxOpenConns is only available for go 1.2+
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func (engine *Engine) SetMaxOpenConns(conns int) {
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engine.db.SetMaxOpenConns(conns)
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}
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// SetMaxIdleConns set the max idle connections on pool, default is 2
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func (engine *Engine) SetMaxIdleConns(conns int) {
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engine.db.SetMaxIdleConns(conns)
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}
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// SetDefaultCacher set the default cacher. Xorm's default not enable cacher.
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func (engine *Engine) SetDefaultCacher(cacher core.Cacher) {
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engine.Cacher = cacher
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}
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// GetDefaultCacher returns the default cacher
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func (engine *Engine) GetDefaultCacher() core.Cacher {
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return engine.Cacher
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}
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// NoCache If you has set default cacher, and you want temporilly stop use cache,
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// you can use NoCache()
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func (engine *Engine) NoCache() *Session {
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session := engine.NewSession()
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session.isAutoClose = true
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return session.NoCache()
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}
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// NoCascade If you do not want to auto cascade load object
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func (engine *Engine) NoCascade() *Session {
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session := engine.NewSession()
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session.isAutoClose = true
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return session.NoCascade()
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}
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// MapCacher Set a table use a special cacher
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func (engine *Engine) MapCacher(bean interface{}, cacher core.Cacher) error {
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engine.setCacher(engine.TableName(bean, true), cacher)
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return nil
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}
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// NewDB provides an interface to operate database directly
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func (engine *Engine) NewDB() (*core.DB, error) {
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return core.OpenDialect(engine.dialect)
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}
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// DB return the wrapper of sql.DB
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func (engine *Engine) DB() *core.DB {
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return engine.db
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}
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// Dialect return database dialect
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func (engine *Engine) Dialect() core.Dialect {
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return engine.dialect
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}
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// NewSession New a session
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func (engine *Engine) NewSession() *Session {
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session := &Session{engine: engine}
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session.Init()
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return session
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}
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// Close the engine
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func (engine *Engine) Close() error {
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return engine.db.Close()
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}
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// Ping tests if database is alive
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func (engine *Engine) Ping() error {
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session := engine.NewSession()
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defer session.Close()
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return session.Ping()
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}
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// logSQL save sql
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func (engine *Engine) logSQL(sqlStr string, sqlArgs ...interface{}) {
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if engine.showSQL && !engine.showExecTime {
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if len(sqlArgs) > 0 {
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engine.logger.Infof("[SQL] %v %#v", sqlStr, sqlArgs)
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} else {
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engine.logger.Infof("[SQL] %v", sqlStr)
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}
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}
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}
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// Sql provides raw sql input parameter. When you have a complex SQL statement
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// and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
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//
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// Deprecated: use SQL instead.
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func (engine *Engine) Sql(querystring string, args ...interface{}) *Session {
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return engine.SQL(querystring, args...)
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}
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// SQL method let's you manually write raw SQL and operate
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// For example:
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//
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// engine.SQL("select * from user").Find(&users)
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//
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// This code will execute "select * from user" and set the records to users
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func (engine *Engine) SQL(query interface{}, args ...interface{}) *Session {
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session := engine.NewSession()
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session.isAutoClose = true
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return session.SQL(query, args...)
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}
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// NoAutoTime Default if your struct has "created" or "updated" filed tag, the fields
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// will automatically be filled with current time when Insert or Update
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// invoked. Call NoAutoTime if you dont' want to fill automatically.
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func (engine *Engine) NoAutoTime() *Session {
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session := engine.NewSession()
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session.isAutoClose = true
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return session.NoAutoTime()
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}
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// NoAutoCondition disable auto generate Where condition from bean or not
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func (engine *Engine) NoAutoCondition(no ...bool) *Session {
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session := engine.NewSession()
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session.isAutoClose = true
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return session.NoAutoCondition(no...)
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}
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func (engine *Engine) loadTableInfo(table *core.Table) error {
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colSeq, cols, err := engine.dialect.GetColumns(table.Name)
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if err != nil {
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return err
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}
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for _, name := range colSeq {
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table.AddColumn(cols[name])
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}
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indexes, err := engine.dialect.GetIndexes(table.Name)
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if err != nil {
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return err
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}
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table.Indexes = indexes
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for _, index := range indexes {
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for _, name := range index.Cols {
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if col := table.GetColumn(name); col != nil {
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col.Indexes[index.Name] = index.Type
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} else {
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return fmt.Errorf("Unknown col %s in index %v of table %v, columns %v", name, index.Name, table.Name, table.ColumnsSeq())
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}
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}
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}
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return nil
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}
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// DBMetas Retrieve all tables, columns, indexes' informations from database.
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func (engine *Engine) DBMetas() ([]*core.Table, error) {
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tables, err := engine.dialect.GetTables()
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if err != nil {
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return nil, err
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}
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for _, table := range tables {
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if err = engine.loadTableInfo(table); err != nil {
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return nil, err
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}
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}
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return tables, nil
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}
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// DumpAllToFile dump database all table structs and data to a file
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func (engine *Engine) DumpAllToFile(fp string, tp ...core.DbType) error {
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f, err := os.Create(fp)
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if err != nil {
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return err
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}
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defer f.Close()
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return engine.DumpAll(f, tp...)
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}
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// DumpAll dump database all table structs and data to w
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func (engine *Engine) DumpAll(w io.Writer, tp ...core.DbType) error {
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tables, err := engine.DBMetas()
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if err != nil {
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return err
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}
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return engine.DumpTables(tables, w, tp...)
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}
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// DumpTablesToFile dump specified tables to SQL file.
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func (engine *Engine) DumpTablesToFile(tables []*core.Table, fp string, tp ...core.DbType) error {
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f, err := os.Create(fp)
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if err != nil {
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return err
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}
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defer f.Close()
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return engine.DumpTables(tables, f, tp...)
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}
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// DumpTables dump specify tables to io.Writer
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func (engine *Engine) DumpTables(tables []*core.Table, w io.Writer, tp ...core.DbType) error {
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return engine.dumpTables(tables, w, tp...)
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}
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// dumpTables dump database all table structs and data to w with specify db type
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func (engine *Engine) dumpTables(tables []*core.Table, w io.Writer, tp ...core.DbType) error {
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var dialect core.Dialect
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var distDBName string
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if len(tp) == 0 {
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dialect = engine.dialect
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distDBName = string(engine.dialect.DBType())
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} else {
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dialect = core.QueryDialect(tp[0])
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if dialect == nil {
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return errors.New("Unsupported database type")
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}
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dialect.Init(nil, engine.dialect.URI(), "", "")
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distDBName = string(tp[0])
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}
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_, err := io.WriteString(w, fmt.Sprintf("/*Generated by xorm v%s %s, from %s to %s*/\n\n",
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Version, time.Now().In(engine.TZLocation).Format("2006-01-02 15:04:05"), engine.dialect.DBType(), strings.ToUpper(distDBName)))
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if err != nil {
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return err
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}
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for i, table := range tables {
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if i > 0 {
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_, err = io.WriteString(w, "\n")
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if err != nil {
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return err
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}
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}
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_, err = io.WriteString(w, dialect.CreateTableSql(table, "", table.StoreEngine, "")+";\n")
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if err != nil {
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return err
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}
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for _, index := range table.Indexes {
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_, err = io.WriteString(w, dialect.CreateIndexSql(table.Name, index)+";\n")
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if err != nil {
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return err
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}
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}
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cols := table.ColumnsSeq()
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colNames := engine.dialect.Quote(strings.Join(cols, engine.dialect.Quote(", ")))
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destColNames := dialect.Quote(strings.Join(cols, dialect.Quote(", ")))
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rows, err := engine.DB().Query("SELECT " + colNames + " FROM " + engine.Quote(table.Name))
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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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for rows.Next() {
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dest := make([]interface{}, len(cols))
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err = rows.ScanSlice(&dest)
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if err != nil {
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return err
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}
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_, err = io.WriteString(w, "INSERT INTO "+dialect.Quote(table.Name)+" ("+destColNames+") VALUES (")
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if err != nil {
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return err
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}
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var temp string
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for i, d := range dest {
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col := table.GetColumn(cols[i])
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if col == nil {
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return errors.New("unknow column error")
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}
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if d == nil {
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temp += ", NULL"
|
|
} else if col.SQLType.IsText() || col.SQLType.IsTime() {
|
|
var v = fmt.Sprintf("%s", d)
|
|
if strings.HasSuffix(v, " +0000 UTC") {
|
|
temp += fmt.Sprintf(", '%s'", v[0:len(v)-len(" +0000 UTC")])
|
|
} else {
|
|
temp += ", '" + strings.Replace(v, "'", "''", -1) + "'"
|
|
}
|
|
} else if col.SQLType.IsBlob() {
|
|
if reflect.TypeOf(d).Kind() == reflect.Slice {
|
|
temp += fmt.Sprintf(", %s", dialect.FormatBytes(d.([]byte)))
|
|
} else if reflect.TypeOf(d).Kind() == reflect.String {
|
|
temp += fmt.Sprintf(", '%s'", d.(string))
|
|
}
|
|
} else if col.SQLType.IsNumeric() {
|
|
switch reflect.TypeOf(d).Kind() {
|
|
case reflect.Slice:
|
|
if col.SQLType.Name == core.Bool {
|
|
temp += fmt.Sprintf(", %v", strconv.FormatBool(d.([]byte)[0] != byte('0')))
|
|
} else {
|
|
temp += fmt.Sprintf(", %s", string(d.([]byte)))
|
|
}
|
|
case reflect.Int16, reflect.Int8, reflect.Int32, reflect.Int64, reflect.Int:
|
|
if col.SQLType.Name == core.Bool {
|
|
temp += fmt.Sprintf(", %v", strconv.FormatBool(reflect.ValueOf(d).Int() > 0))
|
|
} else {
|
|
temp += fmt.Sprintf(", %v", d)
|
|
}
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
if col.SQLType.Name == core.Bool {
|
|
temp += fmt.Sprintf(", %v", strconv.FormatBool(reflect.ValueOf(d).Uint() > 0))
|
|
} else {
|
|
temp += fmt.Sprintf(", %v", d)
|
|
}
|
|
default:
|
|
temp += fmt.Sprintf(", %v", d)
|
|
}
|
|
} else {
|
|
s := fmt.Sprintf("%v", d)
|
|
if strings.Contains(s, ":") || strings.Contains(s, "-") {
|
|
if strings.HasSuffix(s, " +0000 UTC") {
|
|
temp += fmt.Sprintf(", '%s'", s[0:len(s)-len(" +0000 UTC")])
|
|
} else {
|
|
temp += fmt.Sprintf(", '%s'", s)
|
|
}
|
|
} else {
|
|
temp += fmt.Sprintf(", %s", s)
|
|
}
|
|
}
|
|
}
|
|
_, err = io.WriteString(w, temp[2:]+");\n")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// FIXME: Hack for postgres
|
|
if string(dialect.DBType()) == core.POSTGRES && table.AutoIncrColumn() != nil {
|
|
_, err = io.WriteString(w, "SELECT setval('"+table.Name+"_id_seq', COALESCE((SELECT MAX("+table.AutoIncrColumn().Name+") + 1 FROM "+dialect.Quote(table.Name)+"), 1), false);\n")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Cascade use cascade or not
|
|
func (engine *Engine) Cascade(trueOrFalse ...bool) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Cascade(trueOrFalse...)
|
|
}
|
|
|
|
// Where method provide a condition query
|
|
func (engine *Engine) Where(query interface{}, args ...interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Where(query, args...)
|
|
}
|
|
|
|
// Id will be deprecated, please use ID instead
|
|
func (engine *Engine) Id(id interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Id(id)
|
|
}
|
|
|
|
// ID method provoide a condition as (id) = ?
|
|
func (engine *Engine) ID(id interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.ID(id)
|
|
}
|
|
|
|
// Before apply before Processor, affected bean is passed to closure arg
|
|
func (engine *Engine) Before(closures func(interface{})) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Before(closures)
|
|
}
|
|
|
|
// After apply after insert Processor, affected bean is passed to closure arg
|
|
func (engine *Engine) After(closures func(interface{})) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.After(closures)
|
|
}
|
|
|
|
// Charset set charset when create table, only support mysql now
|
|
func (engine *Engine) Charset(charset string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Charset(charset)
|
|
}
|
|
|
|
// StoreEngine set store engine when create table, only support mysql now
|
|
func (engine *Engine) StoreEngine(storeEngine string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.StoreEngine(storeEngine)
|
|
}
|
|
|
|
// Distinct use for distinct columns. Caution: when you are using cache,
|
|
// distinct will not be cached because cache system need id,
|
|
// but distinct will not provide id
|
|
func (engine *Engine) Distinct(columns ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Distinct(columns...)
|
|
}
|
|
|
|
// Select customerize your select columns or contents
|
|
func (engine *Engine) Select(str string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Select(str)
|
|
}
|
|
|
|
// Cols only use the parameters as select or update columns
|
|
func (engine *Engine) Cols(columns ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Cols(columns...)
|
|
}
|
|
|
|
// AllCols indicates that all columns should be use
|
|
func (engine *Engine) AllCols() *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.AllCols()
|
|
}
|
|
|
|
// MustCols specify some columns must use even if they are empty
|
|
func (engine *Engine) MustCols(columns ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.MustCols(columns...)
|
|
}
|
|
|
|
// UseBool xorm automatically retrieve condition according struct, but
|
|
// if struct has bool field, it will ignore them. So use UseBool
|
|
// to tell system to do not ignore them.
|
|
// If no parameters, it will use all the bool field of struct, or
|
|
// it will use parameters's columns
|
|
func (engine *Engine) UseBool(columns ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.UseBool(columns...)
|
|
}
|
|
|
|
// Omit only not use the parameters as select or update columns
|
|
func (engine *Engine) Omit(columns ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Omit(columns...)
|
|
}
|
|
|
|
// Nullable set null when column is zero-value and nullable for update
|
|
func (engine *Engine) Nullable(columns ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Nullable(columns...)
|
|
}
|
|
|
|
// In will generate "column IN (?, ?)"
|
|
func (engine *Engine) In(column string, args ...interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.In(column, args...)
|
|
}
|
|
|
|
// NotIn will generate "column NOT IN (?, ?)"
|
|
func (engine *Engine) NotIn(column string, args ...interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.NotIn(column, args...)
|
|
}
|
|
|
|
// Incr provides a update string like "column = column + ?"
|
|
func (engine *Engine) Incr(column string, arg ...interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Incr(column, arg...)
|
|
}
|
|
|
|
// Decr provides a update string like "column = column - ?"
|
|
func (engine *Engine) Decr(column string, arg ...interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Decr(column, arg...)
|
|
}
|
|
|
|
// SetExpr provides a update string like "column = {expression}"
|
|
func (engine *Engine) SetExpr(column string, expression interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.SetExpr(column, expression)
|
|
}
|
|
|
|
// Table temporarily change the Get, Find, Update's table
|
|
func (engine *Engine) Table(tableNameOrBean interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Table(tableNameOrBean)
|
|
}
|
|
|
|
// Alias set the table alias
|
|
func (engine *Engine) Alias(alias string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Alias(alias)
|
|
}
|
|
|
|
// Limit will generate "LIMIT start, limit"
|
|
func (engine *Engine) Limit(limit int, start ...int) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Limit(limit, start...)
|
|
}
|
|
|
|
// Desc will generate "ORDER BY column1 DESC, column2 DESC"
|
|
func (engine *Engine) Desc(colNames ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Desc(colNames...)
|
|
}
|
|
|
|
// Asc will generate "ORDER BY column1,column2 Asc"
|
|
// This method can chainable use.
|
|
//
|
|
// engine.Desc("name").Asc("age").Find(&users)
|
|
// // SELECT * FROM user ORDER BY name DESC, age ASC
|
|
//
|
|
func (engine *Engine) Asc(colNames ...string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Asc(colNames...)
|
|
}
|
|
|
|
// OrderBy will generate "ORDER BY order"
|
|
func (engine *Engine) OrderBy(order string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.OrderBy(order)
|
|
}
|
|
|
|
// Prepare enables prepare statement
|
|
func (engine *Engine) Prepare() *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Prepare()
|
|
}
|
|
|
|
// Join the join_operator should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
|
|
func (engine *Engine) Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Join(joinOperator, tablename, condition, args...)
|
|
}
|
|
|
|
// GroupBy generate group by statement
|
|
func (engine *Engine) GroupBy(keys string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.GroupBy(keys)
|
|
}
|
|
|
|
// Having generate having statement
|
|
func (engine *Engine) Having(conditions string) *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Having(conditions)
|
|
}
|
|
|
|
// UnMapType removes the datbase mapper of a type
|
|
func (engine *Engine) UnMapType(t reflect.Type) {
|
|
engine.mutex.Lock()
|
|
defer engine.mutex.Unlock()
|
|
delete(engine.Tables, t)
|
|
}
|
|
|
|
func (engine *Engine) autoMapType(v reflect.Value) (*core.Table, error) {
|
|
t := v.Type()
|
|
engine.mutex.Lock()
|
|
defer engine.mutex.Unlock()
|
|
table, ok := engine.Tables[t]
|
|
if !ok {
|
|
var err error
|
|
table, err = engine.mapType(v)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
engine.Tables[t] = table
|
|
if engine.Cacher != nil {
|
|
if v.CanAddr() {
|
|
engine.GobRegister(v.Addr().Interface())
|
|
} else {
|
|
engine.GobRegister(v.Interface())
|
|
}
|
|
}
|
|
}
|
|
return table, nil
|
|
}
|
|
|
|
// GobRegister register one struct to gob for cache use
|
|
func (engine *Engine) GobRegister(v interface{}) *Engine {
|
|
gob.Register(v)
|
|
return engine
|
|
}
|
|
|
|
// Table table struct
|
|
type Table struct {
|
|
*core.Table
|
|
Name string
|
|
}
|
|
|
|
// IsValid if table is valid
|
|
func (t *Table) IsValid() bool {
|
|
return t.Table != nil && len(t.Name) > 0
|
|
}
|
|
|
|
// TableInfo get table info according to bean's content
|
|
func (engine *Engine) TableInfo(bean interface{}) *Table {
|
|
v := rValue(bean)
|
|
tb, err := engine.autoMapType(v)
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
}
|
|
return &Table{tb, engine.TableName(bean)}
|
|
}
|
|
|
|
func addIndex(indexName string, table *core.Table, col *core.Column, indexType int) {
|
|
if index, ok := table.Indexes[indexName]; ok {
|
|
index.AddColumn(col.Name)
|
|
col.Indexes[index.Name] = indexType
|
|
} else {
|
|
index := core.NewIndex(indexName, indexType)
|
|
index.AddColumn(col.Name)
|
|
table.AddIndex(index)
|
|
col.Indexes[index.Name] = indexType
|
|
}
|
|
}
|
|
|
|
// TableName table name interface to define customerize table name
|
|
type TableName interface {
|
|
TableName() string
|
|
}
|
|
|
|
var (
|
|
tpTableName = reflect.TypeOf((*TableName)(nil)).Elem()
|
|
)
|
|
|
|
func (engine *Engine) mapType(v reflect.Value) (*core.Table, error) {
|
|
t := v.Type()
|
|
table := core.NewEmptyTable()
|
|
table.Type = t
|
|
table.Name = engine.tbNameForMap(v)
|
|
|
|
var idFieldColName string
|
|
var hasCacheTag, hasNoCacheTag bool
|
|
|
|
for i := 0; i < t.NumField(); i++ {
|
|
tag := t.Field(i).Tag
|
|
|
|
ormTagStr := tag.Get(engine.TagIdentifier)
|
|
var col *core.Column
|
|
fieldValue := v.Field(i)
|
|
fieldType := fieldValue.Type()
|
|
|
|
if ormTagStr != "" {
|
|
col = &core.Column{
|
|
FieldName: t.Field(i).Name,
|
|
Nullable: true,
|
|
IsPrimaryKey: false,
|
|
IsAutoIncrement: false,
|
|
MapType: core.TWOSIDES,
|
|
Indexes: make(map[string]int),
|
|
DefaultIsEmpty: true,
|
|
}
|
|
tags := splitTag(ormTagStr)
|
|
|
|
if len(tags) > 0 {
|
|
if tags[0] == "-" {
|
|
continue
|
|
}
|
|
|
|
var ctx = tagContext{
|
|
table: table,
|
|
col: col,
|
|
fieldValue: fieldValue,
|
|
indexNames: make(map[string]int),
|
|
engine: engine,
|
|
}
|
|
|
|
if strings.HasPrefix(strings.ToUpper(tags[0]), "EXTENDS") {
|
|
pStart := strings.Index(tags[0], "(")
|
|
if pStart > -1 && strings.HasSuffix(tags[0], ")") {
|
|
var tagPrefix = strings.TrimFunc(tags[0][pStart+1:len(tags[0])-1], func(r rune) bool {
|
|
return r == '\'' || r == '"'
|
|
})
|
|
|
|
ctx.params = []string{tagPrefix}
|
|
}
|
|
|
|
if err := ExtendsTagHandler(&ctx); err != nil {
|
|
return nil, err
|
|
}
|
|
continue
|
|
}
|
|
|
|
for j, key := range tags {
|
|
if ctx.ignoreNext {
|
|
ctx.ignoreNext = false
|
|
continue
|
|
}
|
|
|
|
k := strings.ToUpper(key)
|
|
ctx.tagName = k
|
|
ctx.params = []string{}
|
|
|
|
pStart := strings.Index(k, "(")
|
|
if pStart == 0 {
|
|
return nil, errors.New("( could not be the first charactor")
|
|
}
|
|
if pStart > -1 {
|
|
if !strings.HasSuffix(k, ")") {
|
|
return nil, fmt.Errorf("field %s tag %s cannot match ) charactor", col.FieldName, key)
|
|
}
|
|
|
|
ctx.tagName = k[:pStart]
|
|
ctx.params = strings.Split(key[pStart+1:len(k)-1], ",")
|
|
}
|
|
|
|
if j > 0 {
|
|
ctx.preTag = strings.ToUpper(tags[j-1])
|
|
}
|
|
if j < len(tags)-1 {
|
|
ctx.nextTag = tags[j+1]
|
|
} else {
|
|
ctx.nextTag = ""
|
|
}
|
|
|
|
if h, ok := engine.tagHandlers[ctx.tagName]; ok {
|
|
if err := h(&ctx); err != nil {
|
|
return nil, err
|
|
}
|
|
} else {
|
|
if strings.HasPrefix(key, "'") && strings.HasSuffix(key, "'") {
|
|
col.Name = key[1 : len(key)-1]
|
|
} else {
|
|
col.Name = key
|
|
}
|
|
}
|
|
|
|
if ctx.hasCacheTag {
|
|
hasCacheTag = true
|
|
}
|
|
if ctx.hasNoCacheTag {
|
|
hasNoCacheTag = true
|
|
}
|
|
}
|
|
|
|
if col.SQLType.Name == "" {
|
|
col.SQLType = core.Type2SQLType(fieldType)
|
|
}
|
|
engine.dialect.SqlType(col)
|
|
if col.Length == 0 {
|
|
col.Length = col.SQLType.DefaultLength
|
|
}
|
|
if col.Length2 == 0 {
|
|
col.Length2 = col.SQLType.DefaultLength2
|
|
}
|
|
if col.Name == "" {
|
|
col.Name = engine.ColumnMapper.Obj2Table(t.Field(i).Name)
|
|
}
|
|
|
|
if ctx.isUnique {
|
|
ctx.indexNames[col.Name] = core.UniqueType
|
|
} else if ctx.isIndex {
|
|
ctx.indexNames[col.Name] = core.IndexType
|
|
}
|
|
|
|
for indexName, indexType := range ctx.indexNames {
|
|
addIndex(indexName, table, col, indexType)
|
|
}
|
|
}
|
|
} else {
|
|
var sqlType core.SQLType
|
|
if fieldValue.CanAddr() {
|
|
if _, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
|
|
sqlType = core.SQLType{Name: core.Text}
|
|
}
|
|
}
|
|
if _, ok := fieldValue.Interface().(core.Conversion); ok {
|
|
sqlType = core.SQLType{Name: core.Text}
|
|
} else {
|
|
sqlType = core.Type2SQLType(fieldType)
|
|
}
|
|
col = core.NewColumn(engine.ColumnMapper.Obj2Table(t.Field(i).Name),
|
|
t.Field(i).Name, sqlType, sqlType.DefaultLength,
|
|
sqlType.DefaultLength2, true)
|
|
|
|
if fieldType.Kind() == reflect.Int64 && (strings.ToUpper(col.FieldName) == "ID" || strings.HasSuffix(strings.ToUpper(col.FieldName), ".ID")) {
|
|
idFieldColName = col.Name
|
|
}
|
|
}
|
|
if col.IsAutoIncrement {
|
|
col.Nullable = false
|
|
}
|
|
|
|
table.AddColumn(col)
|
|
|
|
} // end for
|
|
|
|
if idFieldColName != "" && len(table.PrimaryKeys) == 0 {
|
|
col := table.GetColumn(idFieldColName)
|
|
col.IsPrimaryKey = true
|
|
col.IsAutoIncrement = true
|
|
col.Nullable = false
|
|
table.PrimaryKeys = append(table.PrimaryKeys, col.Name)
|
|
table.AutoIncrement = col.Name
|
|
}
|
|
|
|
if hasCacheTag {
|
|
if engine.Cacher != nil { // !nash! use engine's cacher if provided
|
|
engine.logger.Info("enable cache on table:", table.Name)
|
|
engine.setCacher(table.Name, engine.Cacher)
|
|
} else {
|
|
engine.logger.Info("enable LRU cache on table:", table.Name)
|
|
engine.setCacher(table.Name, NewLRUCacher2(NewMemoryStore(), time.Hour, 10000))
|
|
}
|
|
}
|
|
if hasNoCacheTag {
|
|
engine.logger.Info("disable cache on table:", table.Name)
|
|
engine.setCacher(table.Name, nil)
|
|
}
|
|
|
|
return table, nil
|
|
}
|
|
|
|
// IsTableEmpty if a table has any reocrd
|
|
func (engine *Engine) IsTableEmpty(bean interface{}) (bool, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.IsTableEmpty(bean)
|
|
}
|
|
|
|
// IsTableExist if a table is exist
|
|
func (engine *Engine) IsTableExist(beanOrTableName interface{}) (bool, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.IsTableExist(beanOrTableName)
|
|
}
|
|
|
|
// IdOf get id from one struct
|
|
//
|
|
// Deprecated: use IDOf instead.
|
|
func (engine *Engine) IdOf(bean interface{}) core.PK {
|
|
return engine.IDOf(bean)
|
|
}
|
|
|
|
// IDOf get id from one struct
|
|
func (engine *Engine) IDOf(bean interface{}) core.PK {
|
|
return engine.IdOfV(reflect.ValueOf(bean))
|
|
}
|
|
|
|
// IdOfV get id from one value of struct
|
|
//
|
|
// Deprecated: use IDOfV instead.
|
|
func (engine *Engine) IdOfV(rv reflect.Value) core.PK {
|
|
return engine.IDOfV(rv)
|
|
}
|
|
|
|
// IDOfV get id from one value of struct
|
|
func (engine *Engine) IDOfV(rv reflect.Value) core.PK {
|
|
pk, err := engine.idOfV(rv)
|
|
if err != nil {
|
|
engine.logger.Error(err)
|
|
return nil
|
|
}
|
|
return pk
|
|
}
|
|
|
|
func (engine *Engine) idOfV(rv reflect.Value) (core.PK, error) {
|
|
v := reflect.Indirect(rv)
|
|
table, err := engine.autoMapType(v)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
pk := make([]interface{}, len(table.PrimaryKeys))
|
|
for i, col := range table.PKColumns() {
|
|
var err error
|
|
|
|
fieldName := col.FieldName
|
|
for {
|
|
parts := strings.SplitN(fieldName, ".", 2)
|
|
if len(parts) == 1 {
|
|
break
|
|
}
|
|
|
|
v = v.FieldByName(parts[0])
|
|
if v.Kind() == reflect.Ptr {
|
|
v = v.Elem()
|
|
}
|
|
if v.Kind() != reflect.Struct {
|
|
return nil, ErrUnSupportedType
|
|
}
|
|
fieldName = parts[1]
|
|
}
|
|
|
|
pkField := v.FieldByName(fieldName)
|
|
switch pkField.Kind() {
|
|
case reflect.String:
|
|
pk[i], err = engine.idTypeAssertion(col, pkField.String())
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
pk[i], err = engine.idTypeAssertion(col, strconv.FormatInt(pkField.Int(), 10))
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
// id of uint will be converted to int64
|
|
pk[i], err = engine.idTypeAssertion(col, strconv.FormatUint(pkField.Uint(), 10))
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return core.PK(pk), nil
|
|
}
|
|
|
|
func (engine *Engine) idTypeAssertion(col *core.Column, sid string) (interface{}, error) {
|
|
if col.SQLType.IsNumeric() {
|
|
n, err := strconv.ParseInt(sid, 10, 64)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return n, nil
|
|
} else if col.SQLType.IsText() {
|
|
return sid, nil
|
|
} else {
|
|
return nil, errors.New("not supported")
|
|
}
|
|
}
|
|
|
|
// CreateIndexes create indexes
|
|
func (engine *Engine) CreateIndexes(bean interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.CreateIndexes(bean)
|
|
}
|
|
|
|
// CreateUniques create uniques
|
|
func (engine *Engine) CreateUniques(bean interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.CreateUniques(bean)
|
|
}
|
|
|
|
// ClearCacheBean if enabled cache, clear the cache bean
|
|
func (engine *Engine) ClearCacheBean(bean interface{}, id string) error {
|
|
tableName := engine.TableName(bean)
|
|
cacher := engine.getCacher(tableName)
|
|
if cacher != nil {
|
|
cacher.ClearIds(tableName)
|
|
cacher.DelBean(tableName, id)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ClearCache if enabled cache, clear some tables' cache
|
|
func (engine *Engine) ClearCache(beans ...interface{}) error {
|
|
for _, bean := range beans {
|
|
tableName := engine.TableName(bean)
|
|
cacher := engine.getCacher(tableName)
|
|
if cacher != nil {
|
|
cacher.ClearIds(tableName)
|
|
cacher.ClearBeans(tableName)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Sync the new struct changes to database, this method will automatically add
|
|
// table, column, index, unique. but will not delete or change anything.
|
|
// If you change some field, you should change the database manually.
|
|
func (engine *Engine) Sync(beans ...interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
|
|
for _, bean := range beans {
|
|
v := rValue(bean)
|
|
tableNameNoSchema := engine.TableName(bean)
|
|
table, err := engine.autoMapType(v)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
isExist, err := session.Table(bean).isTableExist(tableNameNoSchema)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !isExist {
|
|
err = session.createTable(bean)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
/*isEmpty, err := engine.IsEmptyTable(bean)
|
|
if err != nil {
|
|
return err
|
|
}*/
|
|
var isEmpty bool
|
|
if isEmpty {
|
|
err = session.dropTable(bean)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = session.createTable(bean)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
for _, col := range table.Columns() {
|
|
isExist, err := engine.dialect.IsColumnExist(tableNameNoSchema, col.Name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !isExist {
|
|
if err := session.statement.setRefBean(bean); err != nil {
|
|
return err
|
|
}
|
|
err = session.addColumn(col.Name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
for name, index := range table.Indexes {
|
|
if err := session.statement.setRefBean(bean); err != nil {
|
|
return err
|
|
}
|
|
if index.Type == core.UniqueType {
|
|
isExist, err := session.isIndexExist2(tableNameNoSchema, index.Cols, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !isExist {
|
|
if err := session.statement.setRefBean(bean); err != nil {
|
|
return err
|
|
}
|
|
|
|
err = session.addUnique(tableNameNoSchema, name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
} else if index.Type == core.IndexType {
|
|
isExist, err := session.isIndexExist2(tableNameNoSchema, index.Cols, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !isExist {
|
|
if err := session.statement.setRefBean(bean); err != nil {
|
|
return err
|
|
}
|
|
|
|
err = session.addIndex(tableNameNoSchema, name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
} else {
|
|
return errors.New("unknow index type")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Sync2 synchronize structs to database tables
|
|
func (engine *Engine) Sync2(beans ...interface{}) error {
|
|
s := engine.NewSession()
|
|
defer s.Close()
|
|
return s.Sync2(beans...)
|
|
}
|
|
|
|
// CreateTables create tabls according bean
|
|
func (engine *Engine) CreateTables(beans ...interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
|
|
err := session.Begin()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, bean := range beans {
|
|
err = session.createTable(bean)
|
|
if err != nil {
|
|
session.Rollback()
|
|
return err
|
|
}
|
|
}
|
|
return session.Commit()
|
|
}
|
|
|
|
// DropTables drop specify tables
|
|
func (engine *Engine) DropTables(beans ...interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
|
|
err := session.Begin()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, bean := range beans {
|
|
err = session.dropTable(bean)
|
|
if err != nil {
|
|
session.Rollback()
|
|
return err
|
|
}
|
|
}
|
|
return session.Commit()
|
|
}
|
|
|
|
// DropIndexes drop indexes of a table
|
|
func (engine *Engine) DropIndexes(bean interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.DropIndexes(bean)
|
|
}
|
|
|
|
// Exec raw sql
|
|
func (engine *Engine) Exec(sqlOrArgs ...interface{}) (sql.Result, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Exec(sqlOrArgs...)
|
|
}
|
|
|
|
// Query a raw sql and return records as []map[string][]byte
|
|
func (engine *Engine) Query(sqlOrArgs ...interface{}) (resultsSlice []map[string][]byte, err error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Query(sqlOrArgs...)
|
|
}
|
|
|
|
// QueryString runs a raw sql and return records as []map[string]string
|
|
func (engine *Engine) QueryString(sqlOrArgs ...interface{}) ([]map[string]string, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.QueryString(sqlOrArgs...)
|
|
}
|
|
|
|
// QueryInterface runs a raw sql and return records as []map[string]interface{}
|
|
func (engine *Engine) QueryInterface(sqlOrArgs ...interface{}) ([]map[string]interface{}, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.QueryInterface(sqlOrArgs...)
|
|
}
|
|
|
|
// Insert one or more records
|
|
func (engine *Engine) Insert(beans ...interface{}) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Insert(beans...)
|
|
}
|
|
|
|
// InsertOne insert only one record
|
|
func (engine *Engine) InsertOne(bean interface{}) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.InsertOne(bean)
|
|
}
|
|
|
|
// Update records, bean's non-empty fields are updated contents,
|
|
// condiBean' non-empty filds are conditions
|
|
// CAUTION:
|
|
// 1.bool will defaultly be updated content nor conditions
|
|
// You should call UseBool if you have bool to use.
|
|
// 2.float32 & float64 may be not inexact as conditions
|
|
func (engine *Engine) Update(bean interface{}, condiBeans ...interface{}) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Update(bean, condiBeans...)
|
|
}
|
|
|
|
// Delete records, bean's non-empty fields are conditions
|
|
func (engine *Engine) Delete(bean interface{}) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Delete(bean)
|
|
}
|
|
|
|
// Get retrieve one record from table, bean's non-empty fields
|
|
// are conditions
|
|
func (engine *Engine) Get(bean interface{}) (bool, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Get(bean)
|
|
}
|
|
|
|
// Exist returns true if the record exist otherwise return false
|
|
func (engine *Engine) Exist(bean ...interface{}) (bool, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Exist(bean...)
|
|
}
|
|
|
|
// Find retrieve records from table, condiBeans's non-empty fields
|
|
// are conditions. beans could be []Struct, []*Struct, map[int64]Struct
|
|
// map[int64]*Struct
|
|
func (engine *Engine) Find(beans interface{}, condiBeans ...interface{}) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Find(beans, condiBeans...)
|
|
}
|
|
|
|
// FindAndCount find the results and also return the counts
|
|
func (engine *Engine) FindAndCount(rowsSlicePtr interface{}, condiBean ...interface{}) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.FindAndCount(rowsSlicePtr, condiBean...)
|
|
}
|
|
|
|
// Iterate record by record handle records from table, bean's non-empty fields
|
|
// are conditions.
|
|
func (engine *Engine) Iterate(bean interface{}, fun IterFunc) error {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Iterate(bean, fun)
|
|
}
|
|
|
|
// Rows return sql.Rows compatible Rows obj, as a forward Iterator object for iterating record by record, bean's non-empty fields
|
|
// are conditions.
|
|
func (engine *Engine) Rows(bean interface{}) (*Rows, error) {
|
|
session := engine.NewSession()
|
|
return session.Rows(bean)
|
|
}
|
|
|
|
// Count counts the records. bean's non-empty fields are conditions.
|
|
func (engine *Engine) Count(bean ...interface{}) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Count(bean...)
|
|
}
|
|
|
|
// Sum sum the records by some column. bean's non-empty fields are conditions.
|
|
func (engine *Engine) Sum(bean interface{}, colName string) (float64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Sum(bean, colName)
|
|
}
|
|
|
|
// SumInt sum the records by some column. bean's non-empty fields are conditions.
|
|
func (engine *Engine) SumInt(bean interface{}, colName string) (int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.SumInt(bean, colName)
|
|
}
|
|
|
|
// Sums sum the records by some columns. bean's non-empty fields are conditions.
|
|
func (engine *Engine) Sums(bean interface{}, colNames ...string) ([]float64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.Sums(bean, colNames...)
|
|
}
|
|
|
|
// SumsInt like Sums but return slice of int64 instead of float64.
|
|
func (engine *Engine) SumsInt(bean interface{}, colNames ...string) ([]int64, error) {
|
|
session := engine.NewSession()
|
|
defer session.Close()
|
|
return session.SumsInt(bean, colNames...)
|
|
}
|
|
|
|
// ImportFile SQL DDL file
|
|
func (engine *Engine) ImportFile(ddlPath string) ([]sql.Result, error) {
|
|
file, err := os.Open(ddlPath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
return engine.Import(file)
|
|
}
|
|
|
|
// Import SQL DDL from io.Reader
|
|
func (engine *Engine) Import(r io.Reader) ([]sql.Result, error) {
|
|
var results []sql.Result
|
|
var lastError error
|
|
scanner := bufio.NewScanner(r)
|
|
|
|
semiColSpliter := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
|
|
if atEOF && len(data) == 0 {
|
|
return 0, nil, nil
|
|
}
|
|
if i := bytes.IndexByte(data, ';'); i >= 0 {
|
|
return i + 1, data[0:i], nil
|
|
}
|
|
// If we're at EOF, we have a final, non-terminated line. Return it.
|
|
if atEOF {
|
|
return len(data), data, nil
|
|
}
|
|
// Request more data.
|
|
return 0, nil, nil
|
|
}
|
|
|
|
scanner.Split(semiColSpliter)
|
|
|
|
for scanner.Scan() {
|
|
query := strings.Trim(scanner.Text(), " \t\n\r")
|
|
if len(query) > 0 {
|
|
engine.logSQL(query)
|
|
result, err := engine.DB().Exec(query)
|
|
results = append(results, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
}
|
|
|
|
return results, lastError
|
|
}
|
|
|
|
// nowTime return current time
|
|
func (engine *Engine) nowTime(col *core.Column) (interface{}, time.Time) {
|
|
t := time.Now()
|
|
var tz = engine.DatabaseTZ
|
|
if !col.DisableTimeZone && col.TimeZone != nil {
|
|
tz = col.TimeZone
|
|
}
|
|
return engine.formatTime(col.SQLType.Name, t.In(tz)), t.In(engine.TZLocation)
|
|
}
|
|
|
|
func (engine *Engine) formatColTime(col *core.Column, t time.Time) (v interface{}) {
|
|
if t.IsZero() {
|
|
if col.Nullable {
|
|
return nil
|
|
}
|
|
return ""
|
|
}
|
|
|
|
if col.TimeZone != nil {
|
|
return engine.formatTime(col.SQLType.Name, t.In(col.TimeZone))
|
|
}
|
|
return engine.formatTime(col.SQLType.Name, t.In(engine.DatabaseTZ))
|
|
}
|
|
|
|
// formatTime format time as column type
|
|
func (engine *Engine) formatTime(sqlTypeName string, t time.Time) (v interface{}) {
|
|
switch sqlTypeName {
|
|
case core.Time:
|
|
s := t.Format("2006-01-02 15:04:05") // time.RFC3339
|
|
v = s[11:19]
|
|
case core.Date:
|
|
v = t.Format("2006-01-02")
|
|
case core.DateTime, core.TimeStamp:
|
|
v = t.Format("2006-01-02 15:04:05")
|
|
case core.TimeStampz:
|
|
if engine.dialect.DBType() == core.MSSQL {
|
|
v = t.Format("2006-01-02T15:04:05.9999999Z07:00")
|
|
} else {
|
|
v = t.Format(time.RFC3339Nano)
|
|
}
|
|
case core.BigInt, core.Int:
|
|
v = t.Unix()
|
|
default:
|
|
v = t
|
|
}
|
|
return
|
|
}
|
|
|
|
// GetColumnMapper returns the column name mapper
|
|
func (engine *Engine) GetColumnMapper() core.IMapper {
|
|
return engine.ColumnMapper
|
|
}
|
|
|
|
// GetTableMapper returns the table name mapper
|
|
func (engine *Engine) GetTableMapper() core.IMapper {
|
|
return engine.TableMapper
|
|
}
|
|
|
|
// GetTZLocation returns time zone of the application
|
|
func (engine *Engine) GetTZLocation() *time.Location {
|
|
return engine.TZLocation
|
|
}
|
|
|
|
// SetTZLocation sets time zone of the application
|
|
func (engine *Engine) SetTZLocation(tz *time.Location) {
|
|
engine.TZLocation = tz
|
|
}
|
|
|
|
// GetTZDatabase returns time zone of the database
|
|
func (engine *Engine) GetTZDatabase() *time.Location {
|
|
return engine.DatabaseTZ
|
|
}
|
|
|
|
// SetTZDatabase sets time zone of the database
|
|
func (engine *Engine) SetTZDatabase(tz *time.Location) {
|
|
engine.DatabaseTZ = tz
|
|
}
|
|
|
|
// SetSchema sets the schema of database
|
|
func (engine *Engine) SetSchema(schema string) {
|
|
engine.dialect.URI().Schema = schema
|
|
}
|
|
|
|
// Unscoped always disable struct tag "deleted"
|
|
func (engine *Engine) Unscoped() *Session {
|
|
session := engine.NewSession()
|
|
session.isAutoClose = true
|
|
return session.Unscoped()
|
|
}
|