forgejo/vendor/github.com/go-xorm/xorm/session.go
2016-11-04 08:43:11 +01:00

4145 lines
116 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

// Copyright 2015 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package xorm
import (
"database/sql"
"database/sql/driver"
"encoding/json"
"errors"
"fmt"
"hash/crc32"
"reflect"
"strconv"
"strings"
"time"
"github.com/go-xorm/builder"
"github.com/go-xorm/core"
)
// Session keep a pointer to sql.DB and provides all execution of all
// kind of database operations.
type Session struct {
db *core.DB
Engine *Engine
Tx *core.Tx
Statement Statement
IsAutoCommit bool
IsCommitedOrRollbacked bool
TransType string
IsAutoClose bool
// Automatically reset the statement after operations that execute a SQL
// query such as Count(), Find(), Get(), ...
AutoResetStatement bool
// !nashtsai! storing these beans due to yet committed tx
afterInsertBeans map[interface{}]*[]func(interface{})
afterUpdateBeans map[interface{}]*[]func(interface{})
afterDeleteBeans map[interface{}]*[]func(interface{})
// --
beforeClosures []func(interface{})
afterClosures []func(interface{})
prepareStmt bool
stmtCache map[uint32]*core.Stmt //key: hash.Hash32 of (queryStr, len(queryStr))
cascadeDeep int
// !evalphobia! stored the last executed query on this session
//beforeSQLExec func(string, ...interface{})
lastSQL string
lastSQLArgs []interface{}
}
// Clone copy all the session's content and return a new session
func (session *Session) Clone() *Session {
var sess = *session
return &sess
}
// Init reset the session as the init status.
func (session *Session) Init() {
session.Statement.Init()
session.Statement.Engine = session.Engine
session.IsAutoCommit = true
session.IsCommitedOrRollbacked = false
session.IsAutoClose = false
session.AutoResetStatement = true
session.prepareStmt = false
// !nashtsai! is lazy init better?
session.afterInsertBeans = make(map[interface{}]*[]func(interface{}), 0)
session.afterUpdateBeans = make(map[interface{}]*[]func(interface{}), 0)
session.afterDeleteBeans = make(map[interface{}]*[]func(interface{}), 0)
session.beforeClosures = make([]func(interface{}), 0)
session.afterClosures = make([]func(interface{}), 0)
session.lastSQL = ""
session.lastSQLArgs = []interface{}{}
}
// Close release the connection from pool
func (session *Session) Close() {
for _, v := range session.stmtCache {
v.Close()
}
if session.db != nil {
// When Close be called, if session is a transaction and do not call
// Commit or Rollback, then call Rollback.
if session.Tx != nil && !session.IsCommitedOrRollbacked {
session.Rollback()
}
session.Tx = nil
session.stmtCache = nil
session.Init()
session.db = nil
}
}
func (session *Session) resetStatement() {
if session.AutoResetStatement {
session.Statement.Init()
}
}
// Prepare set a flag to session that should be prepare statment before execute query
func (session *Session) Prepare() *Session {
session.prepareStmt = true
return session
}
// Sql !DEPRECIATED! will be deprecated, please use SQL instead.
func (session *Session) Sql(query string, args ...interface{}) *Session {
return session.SQL(query, args...)
}
// SQL provides raw sql input parameter. When you have a complex SQL statement
// and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
func (session *Session) SQL(query interface{}, args ...interface{}) *Session {
session.Statement.SQL(query, args...)
return session
}
// Where provides custom query condition.
func (session *Session) Where(query interface{}, args ...interface{}) *Session {
session.Statement.Where(query, args...)
return session
}
// And provides custom query condition.
func (session *Session) And(query interface{}, args ...interface{}) *Session {
session.Statement.And(query, args...)
return session
}
// Or provides custom query condition.
func (session *Session) Or(query interface{}, args ...interface{}) *Session {
session.Statement.Or(query, args...)
return session
}
// Id will be deprecated, please use ID instead
func (session *Session) Id(id interface{}) *Session {
session.Statement.Id(id)
return session
}
// ID provides converting id as a query condition
func (session *Session) ID(id interface{}) *Session {
session.Statement.Id(id)
return session
}
// Before Apply before Processor, affected bean is passed to closure arg
func (session *Session) Before(closures func(interface{})) *Session {
if closures != nil {
session.beforeClosures = append(session.beforeClosures, closures)
}
return session
}
// After Apply after Processor, affected bean is passed to closure arg
func (session *Session) After(closures func(interface{})) *Session {
if closures != nil {
session.afterClosures = append(session.afterClosures, closures)
}
return session
}
// Table can input a string or pointer to struct for special a table to operate.
func (session *Session) Table(tableNameOrBean interface{}) *Session {
session.Statement.Table(tableNameOrBean)
return session
}
// Alias set the table alias
func (session *Session) Alias(alias string) *Session {
session.Statement.Alias(alias)
return session
}
// In provides a query string like "id in (1, 2, 3)"
func (session *Session) In(column string, args ...interface{}) *Session {
session.Statement.In(column, args...)
return session
}
// NotIn provides a query string like "id in (1, 2, 3)"
func (session *Session) NotIn(column string, args ...interface{}) *Session {
session.Statement.NotIn(column, args...)
return session
}
// Incr provides a query string like "count = count + 1"
func (session *Session) Incr(column string, arg ...interface{}) *Session {
session.Statement.Incr(column, arg...)
return session
}
// Decr provides a query string like "count = count - 1"
func (session *Session) Decr(column string, arg ...interface{}) *Session {
session.Statement.Decr(column, arg...)
return session
}
// SetExpr provides a query string like "column = {expression}"
func (session *Session) SetExpr(column string, expression string) *Session {
session.Statement.SetExpr(column, expression)
return session
}
// Select provides some columns to special
func (session *Session) Select(str string) *Session {
session.Statement.Select(str)
return session
}
// Cols provides some columns to special
func (session *Session) Cols(columns ...string) *Session {
session.Statement.Cols(columns...)
return session
}
// AllCols ask all columns
func (session *Session) AllCols() *Session {
session.Statement.AllCols()
return session
}
// MustCols specify some columns must use even if they are empty
func (session *Session) MustCols(columns ...string) *Session {
session.Statement.MustCols(columns...)
return session
}
// NoCascade indicate that no cascade load child object
func (session *Session) NoCascade() *Session {
session.Statement.UseCascade = false
return session
}
// UseBool 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 paramters, it will use all the bool field of struct, or
// it will use paramters's columns
func (session *Session) UseBool(columns ...string) *Session {
session.Statement.UseBool(columns...)
return session
}
// 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 (session *Session) Distinct(columns ...string) *Session {
session.Statement.Distinct(columns...)
return session
}
// ForUpdate Set Read/Write locking for UPDATE
func (session *Session) ForUpdate() *Session {
session.Statement.IsForUpdate = true
return session
}
// Omit Only not use the paramters as select or update columns
func (session *Session) Omit(columns ...string) *Session {
session.Statement.Omit(columns...)
return session
}
// Nullable Set null when column is zero-value and nullable for update
func (session *Session) Nullable(columns ...string) *Session {
session.Statement.Nullable(columns...)
return session
}
// NoAutoTime means do not automatically give created field and updated field
// the current time on the current session temporarily
func (session *Session) NoAutoTime() *Session {
session.Statement.UseAutoTime = false
return session
}
// NoAutoCondition disable generate SQL condition from beans
func (session *Session) NoAutoCondition(no ...bool) *Session {
session.Statement.NoAutoCondition(no...)
return session
}
// Limit provide limit and offset query condition
func (session *Session) Limit(limit int, start ...int) *Session {
session.Statement.Limit(limit, start...)
return session
}
// OrderBy provide order by query condition, the input parameter is the content
// after order by on a sql statement.
func (session *Session) OrderBy(order string) *Session {
session.Statement.OrderBy(order)
return session
}
// Desc provide desc order by query condition, the input parameters are columns.
func (session *Session) Desc(colNames ...string) *Session {
session.Statement.Desc(colNames...)
return session
}
// Asc provide asc order by query condition, the input parameters are columns.
func (session *Session) Asc(colNames ...string) *Session {
session.Statement.Asc(colNames...)
return session
}
// StoreEngine is only avialble mysql dialect currently
func (session *Session) StoreEngine(storeEngine string) *Session {
session.Statement.StoreEngine = storeEngine
return session
}
// Charset is only avialble mysql dialect currently
func (session *Session) Charset(charset string) *Session {
session.Statement.Charset = charset
return session
}
// Cascade indicates if loading sub Struct
func (session *Session) Cascade(trueOrFalse ...bool) *Session {
if len(trueOrFalse) >= 1 {
session.Statement.UseCascade = trueOrFalse[0]
}
return session
}
// NoCache ask this session do not retrieve data from cache system and
// get data from database directly.
func (session *Session) NoCache() *Session {
session.Statement.UseCache = false
return session
}
// Join join_operator should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
func (session *Session) Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session {
session.Statement.Join(joinOperator, tablename, condition, args...)
return session
}
// GroupBy Generate Group By statement
func (session *Session) GroupBy(keys string) *Session {
session.Statement.GroupBy(keys)
return session
}
// Having Generate Having statement
func (session *Session) Having(conditions string) *Session {
session.Statement.Having(conditions)
return session
}
// DB db return the wrapper of sql.DB
func (session *Session) DB() *core.DB {
if session.db == nil {
session.db = session.Engine.db
session.stmtCache = make(map[uint32]*core.Stmt, 0)
}
return session.db
}
// Cond return session's conditions
func (session *Session) Conds() builder.Cond {
return session.Statement.cond
}
// Begin a transaction
func (session *Session) Begin() error {
if session.IsAutoCommit {
tx, err := session.DB().Begin()
if err != nil {
return err
}
session.IsAutoCommit = false
session.IsCommitedOrRollbacked = false
session.Tx = tx
session.saveLastSQL("BEGIN TRANSACTION")
}
return nil
}
// Rollback When using transaction, you can rollback if any error
func (session *Session) Rollback() error {
if !session.IsAutoCommit && !session.IsCommitedOrRollbacked {
session.saveLastSQL(session.Engine.dialect.RollBackStr())
session.IsCommitedOrRollbacked = true
return session.Tx.Rollback()
}
return nil
}
// Commit When using transaction, Commit will commit all operations.
func (session *Session) Commit() error {
if !session.IsAutoCommit && !session.IsCommitedOrRollbacked {
session.saveLastSQL("COMMIT")
session.IsCommitedOrRollbacked = true
var err error
if err = session.Tx.Commit(); err == nil {
// handle processors after tx committed
closureCallFunc := func(closuresPtr *[]func(interface{}), bean interface{}) {
if closuresPtr != nil {
for _, closure := range *closuresPtr {
closure(bean)
}
}
}
for bean, closuresPtr := range session.afterInsertBeans {
closureCallFunc(closuresPtr, bean)
if processor, ok := interface{}(bean).(AfterInsertProcessor); ok {
processor.AfterInsert()
}
}
for bean, closuresPtr := range session.afterUpdateBeans {
closureCallFunc(closuresPtr, bean)
if processor, ok := interface{}(bean).(AfterUpdateProcessor); ok {
processor.AfterUpdate()
}
}
for bean, closuresPtr := range session.afterDeleteBeans {
closureCallFunc(closuresPtr, bean)
if processor, ok := interface{}(bean).(AfterDeleteProcessor); ok {
processor.AfterDelete()
}
}
cleanUpFunc := func(slices *map[interface{}]*[]func(interface{})) {
if len(*slices) > 0 {
*slices = make(map[interface{}]*[]func(interface{}), 0)
}
}
cleanUpFunc(&session.afterInsertBeans)
cleanUpFunc(&session.afterUpdateBeans)
cleanUpFunc(&session.afterDeleteBeans)
}
return err
}
return nil
}
func cleanupProcessorsClosures(slices *[]func(interface{})) {
if len(*slices) > 0 {
*slices = make([]func(interface{}), 0)
}
}
func (session *Session) scanMapIntoStruct(obj interface{}, objMap map[string][]byte) error {
dataStruct := rValue(obj)
if dataStruct.Kind() != reflect.Struct {
return errors.New("Expected a pointer to a struct")
}
var col *core.Column
session.Statement.setRefValue(dataStruct)
table := session.Statement.RefTable
tableName := session.Statement.tableName
for key, data := range objMap {
if col = table.GetColumn(key); col == nil {
session.Engine.logger.Warnf("struct %v's has not field %v. %v",
table.Type.Name(), key, table.ColumnsSeq())
continue
}
fieldName := col.FieldName
fieldPath := strings.Split(fieldName, ".")
var fieldValue reflect.Value
if len(fieldPath) > 2 {
session.Engine.logger.Error("Unsupported mutliderive", fieldName)
continue
} else if len(fieldPath) == 2 {
parentField := dataStruct.FieldByName(fieldPath[0])
if parentField.IsValid() {
fieldValue = parentField.FieldByName(fieldPath[1])
}
} else {
fieldValue = dataStruct.FieldByName(fieldName)
}
if !fieldValue.IsValid() || !fieldValue.CanSet() {
session.Engine.logger.Warnf("table %v's column %v is not valid or cannot set", tableName, key)
continue
}
err := session.bytes2Value(col, &fieldValue, data)
if err != nil {
return err
}
}
return nil
}
// Execute sql
func (session *Session) innerExec(sqlStr string, args ...interface{}) (sql.Result, error) {
if session.prepareStmt {
stmt, err := session.doPrepare(sqlStr)
if err != nil {
return nil, err
}
res, err := stmt.Exec(args...)
if err != nil {
return nil, err
}
return res, nil
}
return session.DB().Exec(sqlStr, args...)
}
func (session *Session) exec(sqlStr string, args ...interface{}) (sql.Result, error) {
for _, filter := range session.Engine.dialect.Filters() {
// TODO: for table name, it's no need to RefTable
sqlStr = filter.Do(sqlStr, session.Engine.dialect, session.Statement.RefTable)
}
session.saveLastSQL(sqlStr, args...)
return session.Engine.logSQLExecutionTime(sqlStr, args, func() (sql.Result, error) {
if session.IsAutoCommit {
// FIXME: oci8 can not auto commit (github.com/mattn/go-oci8)
if session.Engine.dialect.DBType() == core.ORACLE {
session.Begin()
r, err := session.Tx.Exec(sqlStr, args...)
session.Commit()
return r, err
}
return session.innerExec(sqlStr, args...)
}
return session.Tx.Exec(sqlStr, args...)
})
}
// Exec raw sql
func (session *Session) Exec(sqlStr string, args ...interface{}) (sql.Result, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.exec(sqlStr, args...)
}
// CreateTable create a table according a bean
func (session *Session) CreateTable(bean interface{}) error {
v := rValue(bean)
session.Statement.setRefValue(v)
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.createOneTable()
}
// CreateIndexes create indexes
func (session *Session) CreateIndexes(bean interface{}) error {
v := rValue(bean)
session.Statement.setRefValue(v)
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
sqls := session.Statement.genIndexSQL()
for _, sqlStr := range sqls {
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
// CreateUniques create uniques
func (session *Session) CreateUniques(bean interface{}) error {
v := rValue(bean)
session.Statement.setRefValue(v)
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
sqls := session.Statement.genUniqueSQL()
for _, sqlStr := range sqls {
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
func (session *Session) createOneTable() error {
sqlStr := session.Statement.genCreateTableSQL()
_, err := session.exec(sqlStr)
return err
}
// to be deleted
func (session *Session) createAll() error {
if session.IsAutoClose {
defer session.Close()
}
for _, table := range session.Engine.Tables {
session.Statement.RefTable = table
session.Statement.tableName = table.Name
err := session.createOneTable()
session.resetStatement()
if err != nil {
return err
}
}
return nil
}
// DropIndexes drop indexes
func (session *Session) DropIndexes(bean interface{}) error {
v := rValue(bean)
session.Statement.setRefValue(v)
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
sqls := session.Statement.genDelIndexSQL()
for _, sqlStr := range sqls {
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
// DropTable drop table will drop table if exist, if drop failed, it will return error
func (session *Session) DropTable(beanOrTableName interface{}) error {
tableName, err := session.Engine.tableName(beanOrTableName)
if err != nil {
return err
}
var needDrop = true
if !session.Engine.dialect.SupportDropIfExists() {
sqlStr, args := session.Engine.dialect.TableCheckSql(tableName)
results, err := session.query(sqlStr, args...)
if err != nil {
return err
}
needDrop = len(results) > 0
}
if needDrop {
sqlStr := session.Engine.Dialect().DropTableSql(tableName)
_, err = session.exec(sqlStr)
return err
}
return nil
}
func (session *Session) canCache() bool {
if session.Statement.RefTable == nil ||
session.Statement.JoinStr != "" ||
session.Statement.RawSQL != "" ||
!session.Statement.UseCache ||
session.Tx != nil ||
len(session.Statement.selectStr) > 0 {
return false
}
return true
}
func (session *Session) cacheGet(bean interface{}, sqlStr string, args ...interface{}) (has bool, err error) {
// if has no reftable, then don't use cache currently
if !session.canCache() {
return false, ErrCacheFailed
}
for _, filter := range session.Engine.dialect.Filters() {
sqlStr = filter.Do(sqlStr, session.Engine.dialect, session.Statement.RefTable)
}
newsql := session.Statement.convertIDSQL(sqlStr)
if newsql == "" {
return false, ErrCacheFailed
}
cacher := session.Engine.getCacher2(session.Statement.RefTable)
tableName := session.Statement.TableName()
session.Engine.logger.Debug("[cacheGet] find sql:", newsql, args)
ids, err := core.GetCacheSql(cacher, tableName, newsql, args)
table := session.Statement.RefTable
if err != nil {
var res = make([]string, len(table.PrimaryKeys))
rows, err := session.DB().Query(newsql, args...)
if err != nil {
return false, err
}
defer rows.Close()
if rows.Next() {
err = rows.ScanSlice(&res)
if err != nil {
return false, err
}
} else {
return false, ErrCacheFailed
}
var pk core.PK = make([]interface{}, len(table.PrimaryKeys))
for i, col := range table.PKColumns() {
if col.SQLType.IsText() {
pk[i] = res[i]
} else if col.SQLType.IsNumeric() {
n, err := strconv.ParseInt(res[i], 10, 64)
if err != nil {
return false, err
}
pk[i] = n
} else {
return false, errors.New("unsupported")
}
}
ids = []core.PK{pk}
session.Engine.logger.Debug("[cacheGet] cache ids:", newsql, ids)
err = core.PutCacheSql(cacher, ids, tableName, newsql, args)
if err != nil {
return false, err
}
} else {
session.Engine.logger.Debug("[cacheGet] cache hit sql:", newsql)
}
if len(ids) > 0 {
structValue := reflect.Indirect(reflect.ValueOf(bean))
id := ids[0]
session.Engine.logger.Debug("[cacheGet] get bean:", tableName, id)
sid, err := id.ToString()
if err != nil {
return false, err
}
cacheBean := cacher.GetBean(tableName, sid)
if cacheBean == nil {
/*newSession := session.Engine.NewSession()
defer newSession.Close()
cacheBean = reflect.New(structValue.Type()).Interface()
newSession.Id(id).NoCache()
if session.Statement.AltTableName != "" {
newSession.Table(session.Statement.AltTableName)
}
if !session.Statement.UseCascade {
newSession.NoCascade()
}
has, err = newSession.Get(cacheBean)
*/
cacheBean = bean
has, err = session.nocacheGet(cacheBean, sqlStr, args...)
if err != nil || !has {
return has, err
}
session.Engine.logger.Debug("[cacheGet] cache bean:", tableName, id, cacheBean)
cacher.PutBean(tableName, sid, cacheBean)
} else {
session.Engine.logger.Debug("[cacheGet] cache hit bean:", tableName, id, cacheBean)
has = true
}
structValue.Set(reflect.Indirect(reflect.ValueOf(cacheBean)))
return has, nil
}
return false, nil
}
func (session *Session) cacheFind(t reflect.Type, sqlStr string, rowsSlicePtr interface{}, args ...interface{}) (err error) {
if !session.canCache() ||
indexNoCase(sqlStr, "having") != -1 ||
indexNoCase(sqlStr, "group by") != -1 {
return ErrCacheFailed
}
for _, filter := range session.Engine.dialect.Filters() {
sqlStr = filter.Do(sqlStr, session.Engine.dialect, session.Statement.RefTable)
}
newsql := session.Statement.convertIDSQL(sqlStr)
if newsql == "" {
return ErrCacheFailed
}
tableName := session.Statement.TableName()
table := session.Statement.RefTable
cacher := session.Engine.getCacher2(table)
ids, err := core.GetCacheSql(cacher, tableName, newsql, args)
if err != nil {
rows, err := session.DB().Query(newsql, args...)
if err != nil {
return err
}
defer rows.Close()
var i int
ids = make([]core.PK, 0)
for rows.Next() {
i++
if i > 500 {
session.Engine.logger.Debug("[cacheFind] ids length > 500, no cache")
return ErrCacheFailed
}
var res = make([]string, len(table.PrimaryKeys))
err = rows.ScanSlice(&res)
if err != nil {
return err
}
var pk core.PK = make([]interface{}, len(table.PrimaryKeys))
for i, col := range table.PKColumns() {
if col.SQLType.IsNumeric() {
n, err := strconv.ParseInt(res[i], 10, 64)
if err != nil {
return err
}
pk[i] = n
} else if col.SQLType.IsText() {
pk[i] = res[i]
} else {
return errors.New("not supported")
}
}
ids = append(ids, pk)
}
session.Engine.logger.Debug("[cacheFind] cache sql:", ids, tableName, newsql, args)
err = core.PutCacheSql(cacher, ids, tableName, newsql, args)
if err != nil {
return err
}
} else {
session.Engine.logger.Debug("[cacheFind] cache hit sql:", newsql, args)
}
sliceValue := reflect.Indirect(reflect.ValueOf(rowsSlicePtr))
ididxes := make(map[string]int)
var ides []core.PK
var temps = make([]interface{}, len(ids))
for idx, id := range ids {
sid, err := id.ToString()
if err != nil {
return err
}
bean := cacher.GetBean(tableName, sid)
if bean == nil {
ides = append(ides, id)
ididxes[sid] = idx
} else {
session.Engine.logger.Debug("[cacheFind] cache hit bean:", tableName, id, bean)
pk := session.Engine.IdOf(bean)
xid, err := pk.ToString()
if err != nil {
return err
}
if sid != xid {
session.Engine.logger.Error("[cacheFind] error cache", xid, sid, bean)
return ErrCacheFailed
}
temps[idx] = bean
}
}
if len(ides) > 0 {
newSession := session.Engine.NewSession()
defer newSession.Close()
slices := reflect.New(reflect.SliceOf(t))
beans := slices.Interface()
if len(table.PrimaryKeys) == 1 {
ff := make([]interface{}, 0, len(ides))
for _, ie := range ides {
ff = append(ff, ie[0])
}
newSession.In("`"+table.PrimaryKeys[0]+"`", ff...)
} else {
for _, ie := range ides {
cond := builder.NewCond()
for i, name := range table.PrimaryKeys {
cond = cond.And(builder.Eq{"`" + name + "`": ie[i]})
}
newSession.Or(cond)
}
}
err = newSession.NoCache().Find(beans)
if err != nil {
return err
}
vs := reflect.Indirect(reflect.ValueOf(beans))
for i := 0; i < vs.Len(); i++ {
rv := vs.Index(i)
if rv.Kind() != reflect.Ptr {
rv = rv.Addr()
}
id := session.Engine.IdOfV(rv)
sid, err := id.ToString()
if err != nil {
return err
}
bean := rv.Interface()
temps[ididxes[sid]] = bean
session.Engine.logger.Debug("[cacheFind] cache bean:", tableName, id, bean, temps)
cacher.PutBean(tableName, sid, bean)
}
}
for j := 0; j < len(temps); j++ {
bean := temps[j]
if bean == nil {
session.Engine.logger.Warn("[cacheFind] cache no hit:", tableName, ids[j], temps)
// return errors.New("cache error") // !nashtsai! no need to return error, but continue instead
continue
}
if sliceValue.Kind() == reflect.Slice {
if t.Kind() == reflect.Ptr {
sliceValue.Set(reflect.Append(sliceValue, reflect.ValueOf(bean)))
} else {
sliceValue.Set(reflect.Append(sliceValue, reflect.Indirect(reflect.ValueOf(bean))))
}
} else if sliceValue.Kind() == reflect.Map {
var key = ids[j]
keyType := sliceValue.Type().Key()
var ikey interface{}
if len(key) == 1 {
ikey, err = str2PK(fmt.Sprintf("%v", key[0]), keyType)
if err != nil {
return err
}
} else {
if keyType.Kind() != reflect.Slice {
return errors.New("table have multiple primary keys, key is not core.PK or slice")
}
ikey = key
}
if t.Kind() == reflect.Ptr {
sliceValue.SetMapIndex(reflect.ValueOf(ikey), reflect.ValueOf(bean))
} else {
sliceValue.SetMapIndex(reflect.ValueOf(ikey), reflect.Indirect(reflect.ValueOf(bean)))
}
}
}
return nil
}
// IterFunc only use by Iterate
type IterFunc func(idx int, bean interface{}) error
// 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 (session *Session) Rows(bean interface{}) (*Rows, error) {
return newRows(session, bean)
}
// Iterate record by record handle records from table, condiBeans's non-empty fields
// are conditions. beans could be []Struct, []*Struct, map[int64]Struct
// map[int64]*Struct
func (session *Session) Iterate(bean interface{}, fun IterFunc) error {
rows, err := session.Rows(bean)
if err != nil {
return err
}
defer rows.Close()
i := 0
for rows.Next() {
b := reflect.New(rows.beanType).Interface()
err = rows.Scan(b)
if err != nil {
return err
}
err = fun(i, b)
if err != nil {
return err
}
i++
}
return err
}
func (session *Session) doPrepare(sqlStr string) (stmt *core.Stmt, err error) {
crc := crc32.ChecksumIEEE([]byte(sqlStr))
// TODO try hash(sqlStr+len(sqlStr))
var has bool
stmt, has = session.stmtCache[crc]
if !has {
stmt, err = session.DB().Prepare(sqlStr)
if err != nil {
return nil, err
}
session.stmtCache[crc] = stmt
}
return
}
func (session *Session) nocacheGet(bean interface{}, sqlStr string, args ...interface{}) (bool, error) {
var rawRows *core.Rows
var err error
session.queryPreprocess(&sqlStr, args...)
if session.IsAutoCommit {
_, rawRows, err = session.innerQuery(sqlStr, args...)
} else {
rawRows, err = session.Tx.Query(sqlStr, args...)
}
if err != nil {
return false, err
}
defer rawRows.Close()
if rawRows.Next() {
if fields, err := rawRows.Columns(); err == nil {
err = session.row2Bean(rawRows, fields, len(fields), bean)
}
return true, err
}
return false, nil
}
// Get retrieve one record from database, bean's non-empty fields
// will be as conditions
func (session *Session) Get(bean interface{}) (bool, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
session.Statement.setRefValue(rValue(bean))
var sqlStr string
var args []interface{}
if session.Statement.RawSQL == "" {
if len(session.Statement.TableName()) <= 0 {
return false, ErrTableNotFound
}
session.Statement.Limit(1)
sqlStr, args = session.Statement.genGetSQL(bean)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
if session.canCache() {
if cacher := session.Engine.getCacher2(session.Statement.RefTable); cacher != nil &&
!session.Statement.unscoped {
has, err := session.cacheGet(bean, sqlStr, args...)
if err != ErrCacheFailed {
return has, err
}
}
}
return session.nocacheGet(bean, sqlStr, args...)
}
// Count counts the records. bean's non-empty fields
// are conditions.
func (session *Session) Count(bean interface{}) (int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if session.Statement.RawSQL == "" {
sqlStr, args = session.Statement.genCountSQL(bean)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var total int64
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).Scan(&total)
} else {
err = session.Tx.QueryRow(sqlStr, args...).Scan(&total)
}
if err != nil {
return 0, err
}
return total, nil
}
// Sum call sum some column. bean's non-empty fields are conditions.
func (session *Session) Sum(bean interface{}, columnName string) (float64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if len(session.Statement.RawSQL) == 0 {
sqlStr, args = session.Statement.genSumSQL(bean, columnName)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var res float64
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).Scan(&res)
} else {
err = session.Tx.QueryRow(sqlStr, args...).Scan(&res)
}
if err != nil {
return 0, err
}
return res, nil
}
// Sums call sum some columns. bean's non-empty fields are conditions.
func (session *Session) Sums(bean interface{}, columnNames ...string) ([]float64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if len(session.Statement.RawSQL) == 0 {
sqlStr, args = session.Statement.genSumSQL(bean, columnNames...)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var res = make([]float64, len(columnNames), len(columnNames))
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).ScanSlice(&res)
} else {
err = session.Tx.QueryRow(sqlStr, args...).ScanSlice(&res)
}
if err != nil {
return nil, err
}
return res, nil
}
// SumsInt sum specify columns and return as []int64 instead of []float64
func (session *Session) SumsInt(bean interface{}, columnNames ...string) ([]int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var sqlStr string
var args []interface{}
if len(session.Statement.RawSQL) == 0 {
sqlStr, args = session.Statement.genSumSQL(bean, columnNames...)
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
session.queryPreprocess(&sqlStr, args...)
var err error
var res = make([]int64, 0, len(columnNames))
if session.IsAutoCommit {
err = session.DB().QueryRow(sqlStr, args...).ScanSlice(&res)
} else {
err = session.Tx.QueryRow(sqlStr, args...).ScanSlice(&res)
}
if err != nil {
return nil, err
}
return res, nil
}
func (session *Session) noCacheFind(sliceValue reflect.Value, sqlStr string, args ...interface{}) error {
var rawRows *core.Rows
var err error
session.queryPreprocess(&sqlStr, args...)
if session.IsAutoCommit {
_, rawRows, err = session.innerQuery(sqlStr, args...)
} else {
rawRows, err = session.Tx.Query(sqlStr, args...)
}
if err != nil {
return err
}
defer rawRows.Close()
fields, err := rawRows.Columns()
if err != nil {
return err
}
var newElemFunc func() reflect.Value
sliceElementType := sliceValue.Type().Elem()
if sliceElementType.Kind() == reflect.Ptr {
newElemFunc = func() reflect.Value {
return reflect.New(sliceElementType.Elem())
}
} else {
newElemFunc = func() reflect.Value {
return reflect.New(sliceElementType)
}
}
var sliceValueSetFunc func(*reflect.Value)
if sliceValue.Kind() == reflect.Slice {
if sliceElementType.Kind() == reflect.Ptr {
sliceValueSetFunc = func(newValue *reflect.Value) {
sliceValue.Set(reflect.Append(sliceValue, reflect.ValueOf(newValue.Interface())))
}
} else {
sliceValueSetFunc = func(newValue *reflect.Value) {
sliceValue.Set(reflect.Append(sliceValue, reflect.Indirect(reflect.ValueOf(newValue.Interface()))))
}
}
}
var newValue = newElemFunc()
dataStruct := rValue(newValue.Interface())
if dataStruct.Kind() != reflect.Struct {
return errors.New("Expected a pointer to a struct")
}
return session.rows2Beans(rawRows, fields, len(fields), session.Engine.autoMapType(dataStruct), newElemFunc, sliceValueSetFunc)
}
// Find retrieve records from table, condiBeans's non-empty fields
// are conditions. beans could be []Struct, []*Struct, map[int64]Struct
// map[int64]*Struct
func (session *Session) Find(rowsSlicePtr interface{}, condiBean ...interface{}) error {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
sliceValue := reflect.Indirect(reflect.ValueOf(rowsSlicePtr))
if sliceValue.Kind() != reflect.Slice && sliceValue.Kind() != reflect.Map {
return errors.New("needs a pointer to a slice or a map")
}
sliceElementType := sliceValue.Type().Elem()
if session.Statement.RefTable == nil {
if sliceElementType.Kind() == reflect.Ptr {
if sliceElementType.Elem().Kind() == reflect.Struct {
pv := reflect.New(sliceElementType.Elem())
session.Statement.setRefValue(pv.Elem())
} else {
return errors.New("slice type")
}
} else if sliceElementType.Kind() == reflect.Struct {
pv := reflect.New(sliceElementType)
session.Statement.setRefValue(pv.Elem())
} else {
return errors.New("slice type")
}
}
var table = session.Statement.RefTable
var addedTableName = (len(session.Statement.JoinStr) > 0)
var autoCond builder.Cond
if !session.Statement.noAutoCondition && len(condiBean) > 0 {
var err error
autoCond, err = session.Statement.buildConds(table, condiBean[0], true, true, false, true, addedTableName)
if err != nil {
panic(err)
}
} else {
// !oinume! Add "<col> IS NULL" to WHERE whatever condiBean is given.
// See https://github.com/go-xorm/xorm/issues/179
if col := table.DeletedColumn(); col != nil && !session.Statement.unscoped { // tag "deleted" is enabled
var colName = session.Engine.Quote(col.Name)
if addedTableName {
var nm = session.Statement.TableName()
if len(session.Statement.TableAlias) > 0 {
nm = session.Statement.TableAlias
}
colName = session.Engine.Quote(nm) + "." + colName
}
autoCond = builder.IsNull{colName}.Or(builder.Eq{colName: "0001-01-01 00:00:00"})
}
}
var sqlStr string
var args []interface{}
if session.Statement.RawSQL == "" {
if len(session.Statement.TableName()) <= 0 {
return ErrTableNotFound
}
var columnStr = session.Statement.ColumnStr
if len(session.Statement.selectStr) > 0 {
columnStr = session.Statement.selectStr
} else {
if session.Statement.JoinStr == "" {
if columnStr == "" {
if session.Statement.GroupByStr != "" {
columnStr = session.Statement.Engine.Quote(strings.Replace(session.Statement.GroupByStr, ",", session.Engine.Quote(","), -1))
} else {
columnStr = session.Statement.genColumnStr()
}
}
} else {
if columnStr == "" {
if session.Statement.GroupByStr != "" {
columnStr = session.Statement.Engine.Quote(strings.Replace(session.Statement.GroupByStr, ",", session.Engine.Quote(","), -1))
} else {
columnStr = "*"
}
}
}
}
condSQL, condArgs, _ := builder.ToSQL(session.Statement.cond.And(autoCond))
args = append(session.Statement.joinArgs, condArgs...)
sqlStr = session.Statement.genSelectSQL(columnStr, condSQL)
// for mssql and use limit
qs := strings.Count(sqlStr, "?")
if len(args)*2 == qs {
args = append(args, args...)
}
} else {
sqlStr = session.Statement.RawSQL
args = session.Statement.RawParams
}
var err error
if session.canCache() {
if cacher := session.Engine.getCacher2(table); cacher != nil &&
!session.Statement.IsDistinct &&
!session.Statement.unscoped {
err = session.cacheFind(sliceElementType, sqlStr, rowsSlicePtr, args...)
if err != ErrCacheFailed {
return err
}
err = nil // !nashtsai! reset err to nil for ErrCacheFailed
session.Engine.logger.Warn("Cache Find Failed")
}
}
if sliceValue.Kind() != reflect.Map {
return session.noCacheFind(sliceValue, sqlStr, args...)
}
resultsSlice, err := session.query(sqlStr, args...)
if err != nil {
return err
}
keyType := sliceValue.Type().Key()
for _, results := range resultsSlice {
var newValue reflect.Value
if sliceElementType.Kind() == reflect.Ptr {
newValue = reflect.New(sliceElementType.Elem())
} else {
newValue = reflect.New(sliceElementType)
}
err := session.scanMapIntoStruct(newValue.Interface(), results)
if err != nil {
return err
}
var key interface{}
// if there is only one pk, we can put the id as map key.
if len(table.PrimaryKeys) == 1 {
key, err = str2PK(string(results[table.PrimaryKeys[0]]), keyType)
if err != nil {
return err
}
} else {
if keyType.Kind() != reflect.Slice {
panic("don't support multiple primary key's map has non-slice key type")
} else {
var keys core.PK = make([]interface{}, 0, len(table.PrimaryKeys))
for _, pk := range table.PrimaryKeys {
skey, err := str2PK(string(results[pk]), keyType)
if err != nil {
return err
}
keys = append(keys, skey)
}
key = keys
}
}
if sliceElementType.Kind() == reflect.Ptr {
sliceValue.SetMapIndex(reflect.ValueOf(key), reflect.ValueOf(newValue.Interface()))
} else {
sliceValue.SetMapIndex(reflect.ValueOf(key), reflect.Indirect(reflect.ValueOf(newValue.Interface())))
}
}
return nil
}
// Ping test if database is ok
func (session *Session) Ping() error {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.DB().Ping()
}
// IsTableExist if a table is exist
func (session *Session) IsTableExist(beanOrTableName interface{}) (bool, error) {
tableName, err := session.Engine.tableName(beanOrTableName)
if err != nil {
return false, err
}
return session.isTableExist(tableName)
}
func (session *Session) isTableExist(tableName string) (bool, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
sqlStr, args := session.Engine.dialect.TableCheckSql(tableName)
results, err := session.query(sqlStr, args...)
return len(results) > 0, err
}
// IsTableEmpty if table have any records
func (session *Session) IsTableEmpty(bean interface{}) (bool, error) {
v := rValue(bean)
t := v.Type()
if t.Kind() == reflect.String {
return session.isTableEmpty(bean.(string))
} else if t.Kind() == reflect.Struct {
rows, err := session.Count(bean)
return rows == 0, err
}
return false, errors.New("bean should be a struct or struct's point")
}
func (session *Session) isTableEmpty(tableName string) (bool, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var total int64
sql := fmt.Sprintf("select count(*) from %s", session.Engine.Quote(tableName))
err := session.DB().QueryRow(sql).Scan(&total)
session.saveLastSQL(sql)
if err != nil {
return true, err
}
return total == 0, nil
}
func (session *Session) isIndexExist(tableName, idxName string, unique bool) (bool, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
var idx string
if unique {
idx = uniqueName(tableName, idxName)
} else {
idx = indexName(tableName, idxName)
}
sqlStr, args := session.Engine.dialect.IndexCheckSql(tableName, idx)
results, err := session.query(sqlStr, args...)
return len(results) > 0, err
}
// find if index is exist according cols
func (session *Session) isIndexExist2(tableName string, cols []string, unique bool) (bool, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
indexes, err := session.Engine.dialect.GetIndexes(tableName)
if err != nil {
return false, err
}
for _, index := range indexes {
if sliceEq(index.Cols, cols) {
if unique {
return index.Type == core.UniqueType, nil
}
return index.Type == core.IndexType, nil
}
}
return false, nil
}
func (session *Session) addColumn(colName string) error {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
col := session.Statement.RefTable.GetColumn(colName)
sql, args := session.Statement.genAddColumnStr(col)
_, err := session.exec(sql, args...)
return err
}
func (session *Session) addIndex(tableName, idxName string) error {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
index := session.Statement.RefTable.Indexes[idxName]
sqlStr := session.Engine.dialect.CreateIndexSql(tableName, index)
_, err := session.exec(sqlStr)
return err
}
func (session *Session) addUnique(tableName, uqeName string) error {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
index := session.Statement.RefTable.Indexes[uqeName]
sqlStr := session.Engine.dialect.CreateIndexSql(tableName, index)
_, err := session.exec(sqlStr)
return err
}
// To be deleted
func (session *Session) dropAll() error {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
for _, table := range session.Engine.Tables {
session.Statement.Init()
session.Statement.RefTable = table
sqlStr := session.Engine.Dialect().DropTableSql(session.Statement.TableName())
_, err := session.exec(sqlStr)
if err != nil {
return err
}
}
return nil
}
func (session *Session) getField(dataStruct *reflect.Value, key string, table *core.Table, idx int) *reflect.Value {
var col *core.Column
if col = table.GetColumnIdx(key, idx); col == nil {
//session.Engine.logger.Warnf("table %v has no column %v. %v", table.Name, key, table.ColumnsSeq())
return nil
}
fieldValue, err := col.ValueOfV(dataStruct)
if err != nil {
session.Engine.logger.Error(err)
return nil
}
if !fieldValue.IsValid() || !fieldValue.CanSet() {
session.Engine.logger.Warnf("table %v's column %v is not valid or cannot set", table.Name, key)
return nil
}
return fieldValue
}
// Cell cell is a result of one column field
type Cell *interface{}
func (session *Session) rows2Beans(rows *core.Rows, fields []string, fieldsCount int,
table *core.Table, newElemFunc func() reflect.Value,
sliceValueSetFunc func(*reflect.Value)) error {
for rows.Next() {
var newValue = newElemFunc()
bean := newValue.Interface()
dataStruct := rValue(bean)
err := session._row2Bean(rows, fields, fieldsCount, bean, &dataStruct, table)
if err != nil {
return err
}
sliceValueSetFunc(&newValue)
}
return nil
}
func (session *Session) row2Bean(rows *core.Rows, fields []string, fieldsCount int, bean interface{}) error {
dataStruct := rValue(bean)
if dataStruct.Kind() != reflect.Struct {
return errors.New("Expected a pointer to a struct")
}
session.Statement.setRefValue(dataStruct)
return session._row2Bean(rows, fields, fieldsCount, bean, &dataStruct, session.Statement.RefTable)
}
func (session *Session) _row2Bean(rows *core.Rows, fields []string, fieldsCount int, bean interface{}, dataStruct *reflect.Value, table *core.Table) error {
scanResults := make([]interface{}, fieldsCount)
for i := 0; i < len(fields); i++ {
var cell interface{}
scanResults[i] = &cell
}
if err := rows.Scan(scanResults...); err != nil {
return err
}
if b, hasBeforeSet := bean.(BeforeSetProcessor); hasBeforeSet {
for ii, key := range fields {
b.BeforeSet(key, Cell(scanResults[ii].(*interface{})))
}
}
defer func() {
if b, hasAfterSet := bean.(AfterSetProcessor); hasAfterSet {
for ii, key := range fields {
b.AfterSet(key, Cell(scanResults[ii].(*interface{})))
}
}
}()
var tempMap = make(map[string]int)
for ii, key := range fields {
var idx int
var ok bool
var lKey = strings.ToLower(key)
if idx, ok = tempMap[lKey]; !ok {
idx = 0
} else {
idx = idx + 1
}
tempMap[lKey] = idx
if fieldValue := session.getField(dataStruct, key, table, idx); fieldValue != nil {
rawValue := reflect.Indirect(reflect.ValueOf(scanResults[ii]))
// if row is null then ignore
if rawValue.Interface() == nil {
continue
}
if fieldValue.CanAddr() {
if structConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
if data, err := value2Bytes(&rawValue); err == nil {
structConvert.FromDB(data)
} else {
session.Engine.logger.Error(err)
}
continue
}
}
if _, ok := fieldValue.Interface().(core.Conversion); ok {
if data, err := value2Bytes(&rawValue); err == nil {
if fieldValue.Kind() == reflect.Ptr && fieldValue.IsNil() {
fieldValue.Set(reflect.New(fieldValue.Type().Elem()))
}
fieldValue.Interface().(core.Conversion).FromDB(data)
} else {
session.Engine.logger.Error(err)
}
continue
}
rawValueType := reflect.TypeOf(rawValue.Interface())
vv := reflect.ValueOf(rawValue.Interface())
fieldType := fieldValue.Type()
hasAssigned := false
col := table.GetColumnIdx(key, idx)
if col.SQLType.IsJson() {
var bs []byte
if rawValueType.Kind() == reflect.String {
bs = []byte(vv.String())
} else if rawValueType.ConvertibleTo(core.BytesType) {
bs = vv.Bytes()
} else {
return fmt.Errorf("unsupported database data type: %s %v", key, rawValueType.Kind())
}
hasAssigned = true
if len(bs) > 0 {
if fieldValue.CanAddr() {
err := json.Unmarshal(bs, fieldValue.Addr().Interface())
if err != nil {
session.Engine.logger.Error(key, err)
return err
}
} else {
x := reflect.New(fieldType)
err := json.Unmarshal(bs, x.Interface())
if err != nil {
session.Engine.logger.Error(key, err)
return err
}
fieldValue.Set(x.Elem())
}
}
continue
}
switch fieldType.Kind() {
case reflect.Complex64, reflect.Complex128:
// TODO: reimplement this
var bs []byte
if rawValueType.Kind() == reflect.String {
bs = []byte(vv.String())
} else if rawValueType.ConvertibleTo(core.BytesType) {
bs = vv.Bytes()
}
hasAssigned = true
if len(bs) > 0 {
if fieldValue.CanAddr() {
err := json.Unmarshal(bs, fieldValue.Addr().Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
} else {
x := reflect.New(fieldType)
err := json.Unmarshal(bs, x.Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(x.Elem())
}
}
case reflect.Slice, reflect.Array:
switch rawValueType.Kind() {
case reflect.Slice, reflect.Array:
switch rawValueType.Elem().Kind() {
case reflect.Uint8:
if fieldType.Elem().Kind() == reflect.Uint8 {
hasAssigned = true
fieldValue.Set(vv)
}
}
}
case reflect.String:
if rawValueType.Kind() == reflect.String {
hasAssigned = true
fieldValue.SetString(vv.String())
}
case reflect.Bool:
if rawValueType.Kind() == reflect.Bool {
hasAssigned = true
fieldValue.SetBool(vv.Bool())
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
switch rawValueType.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
hasAssigned = true
fieldValue.SetInt(vv.Int())
}
case reflect.Float32, reflect.Float64:
switch rawValueType.Kind() {
case reflect.Float32, reflect.Float64:
hasAssigned = true
fieldValue.SetFloat(vv.Float())
}
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
switch rawValueType.Kind() {
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
hasAssigned = true
fieldValue.SetUint(vv.Uint())
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
hasAssigned = true
fieldValue.SetUint(uint64(vv.Int()))
}
case reflect.Struct:
if fieldType.ConvertibleTo(core.TimeType) {
if rawValueType == core.TimeType {
hasAssigned = true
t := vv.Convert(core.TimeType).Interface().(time.Time)
z, _ := t.Zone()
if len(z) == 0 || t.Year() == 0 { // !nashtsai! HACK tmp work around for lib/pq doesn't properly time with location
dbTZ := session.Engine.DatabaseTZ
if dbTZ == nil {
dbTZ = time.Local
}
session.Engine.logger.Debugf("empty zone key[%v] : %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(),
t.Minute(), t.Second(), t.Nanosecond(), dbTZ)
}
// !nashtsai! convert to engine location
if col.TimeZone == nil {
t = t.In(session.Engine.TZLocation)
} else {
t = t.In(col.TimeZone)
}
fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
// t = fieldValue.Interface().(time.Time)
// z, _ = t.Zone()
// session.Engine.LogDebug("fieldValue key[%v]: %v | zone: %v | location: %+v\n", key, t, z, *t.Location())
} else if rawValueType == core.IntType || rawValueType == core.Int64Type ||
rawValueType == core.Int32Type {
hasAssigned = true
var tz *time.Location
if col.TimeZone == nil {
tz = session.Engine.TZLocation
} else {
tz = col.TimeZone
}
t := time.Unix(vv.Int(), 0).In(tz)
//vv = reflect.ValueOf(t)
fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
} else {
if d, ok := vv.Interface().([]uint8); ok {
hasAssigned = true
t, err := session.byte2Time(col, d)
if err != nil {
session.Engine.logger.Error("byte2Time error:", err.Error())
hasAssigned = false
} else {
fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
}
} else if d, ok := vv.Interface().(string); ok {
hasAssigned = true
t, err := session.str2Time(col, d)
if err != nil {
session.Engine.logger.Error("byte2Time error:", err.Error())
hasAssigned = false
} else {
fieldValue.Set(reflect.ValueOf(t).Convert(fieldType))
}
} else {
panic(fmt.Sprintf("rawValueType is %v, value is %v", rawValueType, vv.Interface()))
}
}
} else if nulVal, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
// !<winxxp>! 增加支持sql.Scanner接口的结构如sql.NullString
hasAssigned = true
if err := nulVal.Scan(vv.Interface()); err != nil {
session.Engine.logger.Error("sql.Sanner error:", err.Error())
hasAssigned = false
}
} else if col.SQLType.IsJson() {
if rawValueType.Kind() == reflect.String {
hasAssigned = true
x := reflect.New(fieldType)
if len([]byte(vv.String())) > 0 {
err := json.Unmarshal([]byte(vv.String()), x.Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(x.Elem())
}
} else if rawValueType.Kind() == reflect.Slice {
hasAssigned = true
x := reflect.New(fieldType)
if len(vv.Bytes()) > 0 {
err := json.Unmarshal(vv.Bytes(), x.Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(x.Elem())
}
}
} else if session.Statement.UseCascade {
table := session.Engine.autoMapType(*fieldValue)
if table != nil {
hasAssigned = true
if len(table.PrimaryKeys) != 1 {
panic("unsupported non or composited primary key cascade")
}
var pk = make(core.PK, len(table.PrimaryKeys))
switch rawValueType.Kind() {
case reflect.Int64:
pk[0] = vv.Int()
case reflect.Int:
pk[0] = int(vv.Int())
case reflect.Int32:
pk[0] = int32(vv.Int())
case reflect.Int16:
pk[0] = int16(vv.Int())
case reflect.Int8:
pk[0] = int8(vv.Int())
case reflect.Uint64:
pk[0] = vv.Uint()
case reflect.Uint:
pk[0] = uint(vv.Uint())
case reflect.Uint32:
pk[0] = uint32(vv.Uint())
case reflect.Uint16:
pk[0] = uint16(vv.Uint())
case reflect.Uint8:
pk[0] = uint8(vv.Uint())
case reflect.String:
pk[0] = vv.String()
case reflect.Slice:
pk[0], _ = strconv.ParseInt(string(rawValue.Interface().([]byte)), 10, 64)
default:
panic(fmt.Sprintf("unsupported primary key type: %v, %v", rawValueType, fieldValue))
}
if !isPKZero(pk) {
// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
// property to be fetched lazily
structInter := reflect.New(fieldValue.Type())
newsession := session.Engine.NewSession()
defer newsession.Close()
has, err := newsession.Id(pk).NoCascade().Get(structInter.Interface())
if err != nil {
return err
}
if has {
//v := structInter.Elem().Interface()
//fieldValue.Set(reflect.ValueOf(v))
fieldValue.Set(structInter.Elem())
} else {
return errors.New("cascade obj is not exist")
}
}
} else {
session.Engine.logger.Error("unsupported struct type in Scan: ", fieldValue.Type().String())
}
}
case reflect.Ptr:
// !nashtsai! TODO merge duplicated codes above
//typeStr := fieldType.String()
switch fieldType {
// following types case matching ptr's native type, therefore assign ptr directly
case core.PtrStringType:
if rawValueType.Kind() == reflect.String {
x := vv.String()
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrBoolType:
if rawValueType.Kind() == reflect.Bool {
x := vv.Bool()
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrTimeType:
if rawValueType == core.PtrTimeType {
hasAssigned = true
var x = rawValue.Interface().(time.Time)
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrFloat64Type:
if rawValueType.Kind() == reflect.Float64 {
x := vv.Float()
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrUint64Type:
if rawValueType.Kind() == reflect.Int64 {
var x = uint64(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrInt64Type:
if rawValueType.Kind() == reflect.Int64 {
x := vv.Int()
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrFloat32Type:
if rawValueType.Kind() == reflect.Float64 {
var x = float32(vv.Float())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrIntType:
if rawValueType.Kind() == reflect.Int64 {
var x = int(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrInt32Type:
if rawValueType.Kind() == reflect.Int64 {
var x = int32(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrInt8Type:
if rawValueType.Kind() == reflect.Int64 {
var x = int8(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrInt16Type:
if rawValueType.Kind() == reflect.Int64 {
var x = int16(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrUintType:
if rawValueType.Kind() == reflect.Int64 {
var x = uint(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.PtrUint32Type:
if rawValueType.Kind() == reflect.Int64 {
var x = uint32(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.Uint8Type:
if rawValueType.Kind() == reflect.Int64 {
var x = uint8(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.Uint16Type:
if rawValueType.Kind() == reflect.Int64 {
var x = uint16(vv.Int())
hasAssigned = true
fieldValue.Set(reflect.ValueOf(&x))
}
case core.Complex64Type:
var x complex64
if len([]byte(vv.String())) > 0 {
err := json.Unmarshal([]byte(vv.String()), &x)
if err != nil {
session.Engine.logger.Error(err)
} else {
fieldValue.Set(reflect.ValueOf(&x))
}
}
hasAssigned = true
case core.Complex128Type:
var x complex128
if len([]byte(vv.String())) > 0 {
err := json.Unmarshal([]byte(vv.String()), &x)
if err != nil {
session.Engine.logger.Error(err)
} else {
fieldValue.Set(reflect.ValueOf(&x))
}
}
hasAssigned = true
} // switch fieldType
// default:
// session.Engine.LogError("unsupported type in Scan: ", reflect.TypeOf(v).String())
} // switch fieldType.Kind()
// !nashtsai! for value can't be assigned directly fallback to convert to []byte then back to value
if !hasAssigned {
data, err := value2Bytes(&rawValue)
if err == nil {
session.bytes2Value(col, fieldValue, data)
} else {
session.Engine.logger.Error(err.Error())
}
}
}
}
return nil
}
func (session *Session) queryPreprocess(sqlStr *string, paramStr ...interface{}) {
for _, filter := range session.Engine.dialect.Filters() {
*sqlStr = filter.Do(*sqlStr, session.Engine.dialect, session.Statement.RefTable)
}
session.saveLastSQL(*sqlStr, paramStr...)
}
func (session *Session) query(sqlStr string, paramStr ...interface{}) (resultsSlice []map[string][]byte, err error) {
session.queryPreprocess(&sqlStr, paramStr...)
if session.IsAutoCommit {
return session.innerQuery2(sqlStr, paramStr...)
}
return session.txQuery(session.Tx, sqlStr, paramStr...)
}
func (session *Session) txQuery(tx *core.Tx, sqlStr string, params ...interface{}) (resultsSlice []map[string][]byte, err error) {
rows, err := tx.Query(sqlStr, params...)
if err != nil {
return nil, err
}
defer rows.Close()
return rows2maps(rows)
}
func (session *Session) innerQuery(sqlStr string, params ...interface{}) (*core.Stmt, *core.Rows, error) {
var callback func() (*core.Stmt, *core.Rows, error)
if session.prepareStmt {
callback = func() (*core.Stmt, *core.Rows, error) {
stmt, err := session.doPrepare(sqlStr)
if err != nil {
return nil, nil, err
}
rows, err := stmt.Query(params...)
if err != nil {
return nil, nil, err
}
return stmt, rows, nil
}
} else {
callback = func() (*core.Stmt, *core.Rows, error) {
rows, err := session.DB().Query(sqlStr, params...)
if err != nil {
return nil, nil, err
}
return nil, rows, err
}
}
stmt, rows, err := session.Engine.logSQLQueryTime(sqlStr, params, callback)
if err != nil {
return nil, nil, err
}
return stmt, rows, nil
}
func (session *Session) innerQuery2(sqlStr string, params ...interface{}) ([]map[string][]byte, error) {
_, rows, err := session.innerQuery(sqlStr, params...)
if rows != nil {
defer rows.Close()
}
if err != nil {
return nil, err
}
return rows2maps(rows)
}
// Query a raw sql and return records as []map[string][]byte
func (session *Session) Query(sqlStr string, paramStr ...interface{}) (resultsSlice []map[string][]byte, err error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.query(sqlStr, paramStr...)
}
// =============================
// for string
// =============================
func (session *Session) query2(sqlStr string, paramStr ...interface{}) (resultsSlice []map[string]string, err error) {
session.queryPreprocess(&sqlStr, paramStr...)
if session.IsAutoCommit {
return query2(session.DB(), sqlStr, paramStr...)
}
return txQuery2(session.Tx, sqlStr, paramStr...)
}
// Insert insert one or more beans
func (session *Session) Insert(beans ...interface{}) (int64, error) {
var affected int64
var err error
if session.IsAutoClose {
defer session.Close()
}
for _, bean := range beans {
sliceValue := reflect.Indirect(reflect.ValueOf(bean))
if sliceValue.Kind() == reflect.Slice {
size := sliceValue.Len()
if size > 0 {
if session.Engine.SupportInsertMany() {
cnt, err := session.innerInsertMulti(bean)
session.resetStatement()
if err != nil {
return affected, err
}
affected += cnt
} else {
for i := 0; i < size; i++ {
cnt, err := session.innerInsert(sliceValue.Index(i).Interface())
session.resetStatement()
if err != nil {
return affected, err
}
affected += cnt
}
}
}
} else {
cnt, err := session.innerInsert(bean)
session.resetStatement()
if err != nil {
return affected, err
}
affected += cnt
}
}
return affected, err
}
func (session *Session) innerInsertMulti(rowsSlicePtr interface{}) (int64, error) {
sliceValue := reflect.Indirect(reflect.ValueOf(rowsSlicePtr))
if sliceValue.Kind() != reflect.Slice {
return 0, errors.New("needs a pointer to a slice")
}
if sliceValue.Len() <= 0 {
return 0, errors.New("could not insert a empty slice")
}
session.Statement.setRefValue(sliceValue.Index(0))
if len(session.Statement.TableName()) <= 0 {
return 0, ErrTableNotFound
}
table := session.Statement.RefTable
size := sliceValue.Len()
var colNames []string
var colMultiPlaces []string
var args []interface{}
var cols []*core.Column
for i := 0; i < size; i++ {
v := sliceValue.Index(i)
vv := reflect.Indirect(v)
elemValue := v.Interface()
var colPlaces []string
// handle BeforeInsertProcessor
// !nashtsai! does user expect it's same slice to passed closure when using Before()/After() when insert multi??
for _, closure := range session.beforeClosures {
closure(elemValue)
}
if processor, ok := interface{}(elemValue).(BeforeInsertProcessor); ok {
processor.BeforeInsert()
}
// --
if i == 0 {
for _, col := range table.Columns() {
ptrFieldValue, err := col.ValueOfV(&vv)
if err != nil {
return 0, err
}
fieldValue := *ptrFieldValue
if col.IsAutoIncrement && isZero(fieldValue.Interface()) {
continue
}
if col.MapType == core.ONLYFROMDB {
continue
}
if col.IsDeleted {
continue
}
if session.Statement.ColumnStr != "" {
if _, ok := session.Statement.columnMap[strings.ToLower(col.Name)]; !ok {
continue
}
}
if session.Statement.OmitStr != "" {
if _, ok := session.Statement.columnMap[strings.ToLower(col.Name)]; ok {
continue
}
}
if (col.IsCreated || col.IsUpdated) && session.Statement.UseAutoTime {
val, t := session.Engine.NowTime2(col.SQLType.Name)
args = append(args, val)
var colName = col.Name
session.afterClosures = append(session.afterClosures, func(bean interface{}) {
col := table.GetColumn(colName)
setColumnTime(bean, col, t)
})
} else if col.IsVersion && session.Statement.checkVersion {
args = append(args, 1)
var colName = col.Name
session.afterClosures = append(session.afterClosures, func(bean interface{}) {
col := table.GetColumn(colName)
setColumnInt(bean, col, 1)
})
} else {
arg, err := session.value2Interface(col, fieldValue)
if err != nil {
return 0, err
}
args = append(args, arg)
}
colNames = append(colNames, col.Name)
cols = append(cols, col)
colPlaces = append(colPlaces, "?")
}
} else {
for _, col := range cols {
ptrFieldValue, err := col.ValueOfV(&vv)
if err != nil {
return 0, err
}
fieldValue := *ptrFieldValue
if col.IsAutoIncrement && isZero(fieldValue.Interface()) {
continue
}
if col.MapType == core.ONLYFROMDB {
continue
}
if col.IsDeleted {
continue
}
if session.Statement.ColumnStr != "" {
if _, ok := session.Statement.columnMap[strings.ToLower(col.Name)]; !ok {
continue
}
}
if session.Statement.OmitStr != "" {
if _, ok := session.Statement.columnMap[strings.ToLower(col.Name)]; ok {
continue
}
}
if (col.IsCreated || col.IsUpdated) && session.Statement.UseAutoTime {
val, t := session.Engine.NowTime2(col.SQLType.Name)
args = append(args, val)
var colName = col.Name
session.afterClosures = append(session.afterClosures, func(bean interface{}) {
col := table.GetColumn(colName)
setColumnTime(bean, col, t)
})
} else if col.IsVersion && session.Statement.checkVersion {
args = append(args, 1)
var colName = col.Name
session.afterClosures = append(session.afterClosures, func(bean interface{}) {
col := table.GetColumn(colName)
setColumnInt(bean, col, 1)
})
} else {
arg, err := session.value2Interface(col, fieldValue)
if err != nil {
return 0, err
}
args = append(args, arg)
}
colPlaces = append(colPlaces, "?")
}
}
colMultiPlaces = append(colMultiPlaces, strings.Join(colPlaces, ", "))
}
cleanupProcessorsClosures(&session.beforeClosures)
statement := fmt.Sprintf("INSERT INTO %s (%v%v%v) VALUES (%v)",
session.Engine.Quote(session.Statement.TableName()),
session.Engine.QuoteStr(),
strings.Join(colNames, session.Engine.QuoteStr()+", "+session.Engine.QuoteStr()),
session.Engine.QuoteStr(),
strings.Join(colMultiPlaces, "),("))
res, err := session.exec(statement, args...)
if err != nil {
return 0, err
}
if cacher := session.Engine.getCacher2(table); cacher != nil && session.Statement.UseCache {
session.cacheInsert(session.Statement.TableName())
}
lenAfterClosures := len(session.afterClosures)
for i := 0; i < size; i++ {
elemValue := reflect.Indirect(sliceValue.Index(i)).Addr().Interface()
// handle AfterInsertProcessor
if session.IsAutoCommit {
// !nashtsai! does user expect it's same slice to passed closure when using Before()/After() when insert multi??
for _, closure := range session.afterClosures {
closure(elemValue)
}
if processor, ok := interface{}(elemValue).(AfterInsertProcessor); ok {
processor.AfterInsert()
}
} else {
if lenAfterClosures > 0 {
if value, has := session.afterInsertBeans[elemValue]; has && value != nil {
*value = append(*value, session.afterClosures...)
} else {
afterClosures := make([]func(interface{}), lenAfterClosures)
copy(afterClosures, session.afterClosures)
session.afterInsertBeans[elemValue] = &afterClosures
}
} else {
if _, ok := interface{}(elemValue).(AfterInsertProcessor); ok {
session.afterInsertBeans[elemValue] = nil
}
}
}
}
cleanupProcessorsClosures(&session.afterClosures)
return res.RowsAffected()
}
// InsertMulti insert multiple records
func (session *Session) InsertMulti(rowsSlicePtr interface{}) (int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
sliceValue := reflect.Indirect(reflect.ValueOf(rowsSlicePtr))
if sliceValue.Kind() != reflect.Slice {
return 0, ErrParamsType
}
if sliceValue.Len() <= 0 {
return 0, nil
}
return session.innerInsertMulti(rowsSlicePtr)
}
func (session *Session) str2Time(col *core.Column, data string) (outTime time.Time, outErr error) {
sdata := strings.TrimSpace(data)
var x time.Time
var err error
if sdata == "0000-00-00 00:00:00" ||
sdata == "0001-01-01 00:00:00" {
} else if !strings.ContainsAny(sdata, "- :") { // !nashtsai! has only found that mymysql driver is using this for time type column
// time stamp
sd, err := strconv.ParseInt(sdata, 10, 64)
if err == nil {
x = time.Unix(sd, 0)
// !nashtsai! HACK mymysql driver is casuing Local location being change to CHAT and cause wrong time conversion
if col.TimeZone == nil {
x = x.In(session.Engine.TZLocation)
} else {
x = x.In(col.TimeZone)
}
session.Engine.logger.Debugf("time(0) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
} else {
session.Engine.logger.Debugf("time(0) err key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
}
} else if len(sdata) > 19 && strings.Contains(sdata, "-") {
x, err = time.ParseInLocation(time.RFC3339Nano, sdata, session.Engine.TZLocation)
session.Engine.logger.Debugf("time(1) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
if err != nil {
x, err = time.ParseInLocation("2006-01-02 15:04:05.999999999", sdata, session.Engine.TZLocation)
session.Engine.logger.Debugf("time(2) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
}
if err != nil {
x, err = time.ParseInLocation("2006-01-02 15:04:05.9999999 Z07:00", sdata, session.Engine.TZLocation)
session.Engine.logger.Debugf("time(3) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
}
} else if len(sdata) == 19 && strings.Contains(sdata, "-") {
x, err = time.ParseInLocation("2006-01-02 15:04:05", sdata, session.Engine.TZLocation)
session.Engine.logger.Debugf("time(4) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
} else if len(sdata) == 10 && sdata[4] == '-' && sdata[7] == '-' {
x, err = time.ParseInLocation("2006-01-02", sdata, session.Engine.TZLocation)
session.Engine.logger.Debugf("time(5) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
} else if col.SQLType.Name == core.Time {
if strings.Contains(sdata, " ") {
ssd := strings.Split(sdata, " ")
sdata = ssd[1]
}
sdata = strings.TrimSpace(sdata)
if session.Engine.dialect.DBType() == core.MYSQL && len(sdata) > 8 {
sdata = sdata[len(sdata)-8:]
}
st := fmt.Sprintf("2006-01-02 %v", sdata)
x, err = time.ParseInLocation("2006-01-02 15:04:05", st, session.Engine.TZLocation)
session.Engine.logger.Debugf("time(6) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata)
} else {
outErr = fmt.Errorf("unsupported time format %v", sdata)
return
}
if err != nil {
outErr = fmt.Errorf("unsupported time format %v: %v", sdata, err)
return
}
outTime = x
return
}
func (session *Session) byte2Time(col *core.Column, data []byte) (outTime time.Time, outErr error) {
return session.str2Time(col, string(data))
}
// convert a db data([]byte) to a field value
func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value, data []byte) error {
if structConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
return structConvert.FromDB(data)
}
if structConvert, ok := fieldValue.Interface().(core.Conversion); ok {
return structConvert.FromDB(data)
}
var v interface{}
key := col.Name
fieldType := fieldValue.Type()
switch fieldType.Kind() {
case reflect.Complex64, reflect.Complex128:
x := reflect.New(fieldType)
if len(data) > 0 {
err := json.Unmarshal(data, x.Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(x.Elem())
}
case reflect.Slice, reflect.Array, reflect.Map:
v = data
t := fieldType.Elem()
k := t.Kind()
if col.SQLType.IsText() {
x := reflect.New(fieldType)
if len(data) > 0 {
err := json.Unmarshal(data, x.Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(x.Elem())
}
} else if col.SQLType.IsBlob() {
if k == reflect.Uint8 {
fieldValue.Set(reflect.ValueOf(v))
} else {
x := reflect.New(fieldType)
if len(data) > 0 {
err := json.Unmarshal(data, x.Interface())
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(x.Elem())
}
}
} else {
return ErrUnSupportedType
}
case reflect.String:
fieldValue.SetString(string(data))
case reflect.Bool:
d := string(data)
v, err := strconv.ParseBool(d)
if err != nil {
return fmt.Errorf("arg %v as bool: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(v))
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
sdata := string(data)
var x int64
var err error
// for mysql, when use bit, it returned \x01
if col.SQLType.Name == core.Bit &&
session.Engine.dialect.DBType() == core.MYSQL { // !nashtsai! TODO dialect needs to provide conversion interface API
if len(data) == 1 {
x = int64(data[0])
} else {
x = 0
}
} else if strings.HasPrefix(sdata, "0x") {
x, err = strconv.ParseInt(sdata, 16, 64)
} else if strings.HasPrefix(sdata, "0") {
x, err = strconv.ParseInt(sdata, 8, 64)
} else if strings.EqualFold(sdata, "true") {
x = 1
} else if strings.EqualFold(sdata, "false") {
x = 0
} else {
x, err = strconv.ParseInt(sdata, 10, 64)
}
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.SetInt(x)
case reflect.Float32, reflect.Float64:
x, err := strconv.ParseFloat(string(data), 64)
if err != nil {
return fmt.Errorf("arg %v as float64: %s", key, err.Error())
}
fieldValue.SetFloat(x)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
x, err := strconv.ParseUint(string(data), 10, 64)
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.SetUint(x)
//Currently only support Time type
case reflect.Struct:
// !<winxxp>! 增加支持sql.Scanner接口的结构如sql.NullString
if nulVal, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
if err := nulVal.Scan(data); err != nil {
return fmt.Errorf("sql.Scan(%v) failed: %s ", data, err.Error())
}
} else {
if fieldType.ConvertibleTo(core.TimeType) {
x, err := session.byte2Time(col, data)
if err != nil {
return err
}
v = x
fieldValue.Set(reflect.ValueOf(v).Convert(fieldType))
} else if session.Statement.UseCascade {
table := session.Engine.autoMapType(*fieldValue)
if table != nil {
// TODO: current only support 1 primary key
if len(table.PrimaryKeys) > 1 {
panic("unsupported composited primary key cascade")
}
var pk = make(core.PK, len(table.PrimaryKeys))
rawValueType := table.ColumnType(table.PKColumns()[0].FieldName)
var err error
pk[0], err = str2PK(string(data), rawValueType)
if err != nil {
return err
}
if !isPKZero(pk) {
// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
// property to be fetched lazily
structInter := reflect.New(fieldValue.Type())
newsession := session.Engine.NewSession()
defer newsession.Close()
has, err := newsession.Id(pk).NoCascade().Get(structInter.Interface())
if err != nil {
return err
}
if has {
v = structInter.Elem().Interface()
fieldValue.Set(reflect.ValueOf(v))
} else {
return errors.New("cascade obj is not exist")
}
}
} else {
return fmt.Errorf("unsupported struct type in Scan: %s", fieldValue.Type().String())
}
}
}
case reflect.Ptr:
// !nashtsai! TODO merge duplicated codes above
//typeStr := fieldType.String()
switch fieldType.Elem().Kind() {
// case "*string":
case core.StringType.Kind():
x := string(data)
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*bool":
case core.BoolType.Kind():
d := string(data)
v, err := strconv.ParseBool(d)
if err != nil {
return fmt.Errorf("arg %v as bool: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&v).Convert(fieldType))
// case "*complex64":
case core.Complex64Type.Kind():
var x complex64
if len(data) > 0 {
err := json.Unmarshal(data, &x)
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
}
// case "*complex128":
case core.Complex128Type.Kind():
var x complex128
if len(data) > 0 {
err := json.Unmarshal(data, &x)
if err != nil {
session.Engine.logger.Error(err)
return err
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
}
// case "*float64":
case core.Float64Type.Kind():
x, err := strconv.ParseFloat(string(data), 64)
if err != nil {
return fmt.Errorf("arg %v as float64: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*float32":
case core.Float32Type.Kind():
var x float32
x1, err := strconv.ParseFloat(string(data), 32)
if err != nil {
return fmt.Errorf("arg %v as float32: %s", key, err.Error())
}
x = float32(x1)
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*uint64":
case core.Uint64Type.Kind():
var x uint64
x, err := strconv.ParseUint(string(data), 10, 64)
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*uint":
case core.UintType.Kind():
var x uint
x1, err := strconv.ParseUint(string(data), 10, 64)
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
x = uint(x1)
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*uint32":
case core.Uint32Type.Kind():
var x uint32
x1, err := strconv.ParseUint(string(data), 10, 64)
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
x = uint32(x1)
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*uint8":
case core.Uint8Type.Kind():
var x uint8
x1, err := strconv.ParseUint(string(data), 10, 64)
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
x = uint8(x1)
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*uint16":
case core.Uint16Type.Kind():
var x uint16
x1, err := strconv.ParseUint(string(data), 10, 64)
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
x = uint16(x1)
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*int64":
case core.Int64Type.Kind():
sdata := string(data)
var x int64
var err error
// for mysql, when use bit, it returned \x01
if col.SQLType.Name == core.Bit &&
strings.Contains(session.Engine.DriverName(), "mysql") {
if len(data) == 1 {
x = int64(data[0])
} else {
x = 0
}
} else if strings.HasPrefix(sdata, "0x") {
x, err = strconv.ParseInt(sdata, 16, 64)
} else if strings.HasPrefix(sdata, "0") {
x, err = strconv.ParseInt(sdata, 8, 64)
} else {
x, err = strconv.ParseInt(sdata, 10, 64)
}
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*int":
case core.IntType.Kind():
sdata := string(data)
var x int
var x1 int64
var err error
// for mysql, when use bit, it returned \x01
if col.SQLType.Name == core.Bit &&
strings.Contains(session.Engine.DriverName(), "mysql") {
if len(data) == 1 {
x = int(data[0])
} else {
x = 0
}
} else if strings.HasPrefix(sdata, "0x") {
x1, err = strconv.ParseInt(sdata, 16, 64)
x = int(x1)
} else if strings.HasPrefix(sdata, "0") {
x1, err = strconv.ParseInt(sdata, 8, 64)
x = int(x1)
} else {
x1, err = strconv.ParseInt(sdata, 10, 64)
x = int(x1)
}
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*int32":
case core.Int32Type.Kind():
sdata := string(data)
var x int32
var x1 int64
var err error
// for mysql, when use bit, it returned \x01
if col.SQLType.Name == core.Bit &&
session.Engine.dialect.DBType() == core.MYSQL {
if len(data) == 1 {
x = int32(data[0])
} else {
x = 0
}
} else if strings.HasPrefix(sdata, "0x") {
x1, err = strconv.ParseInt(sdata, 16, 64)
x = int32(x1)
} else if strings.HasPrefix(sdata, "0") {
x1, err = strconv.ParseInt(sdata, 8, 64)
x = int32(x1)
} else {
x1, err = strconv.ParseInt(sdata, 10, 64)
x = int32(x1)
}
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*int8":
case core.Int8Type.Kind():
sdata := string(data)
var x int8
var x1 int64
var err error
// for mysql, when use bit, it returned \x01
if col.SQLType.Name == core.Bit &&
strings.Contains(session.Engine.DriverName(), "mysql") {
if len(data) == 1 {
x = int8(data[0])
} else {
x = 0
}
} else if strings.HasPrefix(sdata, "0x") {
x1, err = strconv.ParseInt(sdata, 16, 64)
x = int8(x1)
} else if strings.HasPrefix(sdata, "0") {
x1, err = strconv.ParseInt(sdata, 8, 64)
x = int8(x1)
} else {
x1, err = strconv.ParseInt(sdata, 10, 64)
x = int8(x1)
}
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*int16":
case core.Int16Type.Kind():
sdata := string(data)
var x int16
var x1 int64
var err error
// for mysql, when use bit, it returned \x01
if col.SQLType.Name == core.Bit &&
strings.Contains(session.Engine.DriverName(), "mysql") {
if len(data) == 1 {
x = int16(data[0])
} else {
x = 0
}
} else if strings.HasPrefix(sdata, "0x") {
x1, err = strconv.ParseInt(sdata, 16, 64)
x = int16(x1)
} else if strings.HasPrefix(sdata, "0") {
x1, err = strconv.ParseInt(sdata, 8, 64)
x = int16(x1)
} else {
x1, err = strconv.ParseInt(sdata, 10, 64)
x = int16(x1)
}
if err != nil {
return fmt.Errorf("arg %v as int: %s", key, err.Error())
}
fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType))
// case "*SomeStruct":
case reflect.Struct:
switch fieldType {
// case "*.time.Time":
case core.PtrTimeType:
x, err := session.byte2Time(col, data)
if err != nil {
return err
}
v = x
fieldValue.Set(reflect.ValueOf(&x))
default:
if session.Statement.UseCascade {
structInter := reflect.New(fieldType.Elem())
table := session.Engine.autoMapType(structInter.Elem())
if table != nil {
if len(table.PrimaryKeys) > 1 {
panic("unsupported composited primary key cascade")
}
var pk = make(core.PK, len(table.PrimaryKeys))
var err error
rawValueType := table.ColumnType(table.PKColumns()[0].FieldName)
pk[0], err = str2PK(string(data), rawValueType)
if err != nil {
return err
}
if !isPKZero(pk) {
// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch
// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne
// property to be fetched lazily
newsession := session.Engine.NewSession()
defer newsession.Close()
has, err := newsession.Id(pk).NoCascade().Get(structInter.Interface())
if err != nil {
return err
}
if has {
v = structInter.Interface()
fieldValue.Set(reflect.ValueOf(v))
} else {
return errors.New("cascade obj is not exist")
}
}
}
} else {
return fmt.Errorf("unsupported struct type in Scan: %s", fieldValue.Type().String())
}
}
default:
return fmt.Errorf("unsupported type in Scan: %s", fieldValue.Type().String())
}
default:
return fmt.Errorf("unsupported type in Scan: %s", fieldValue.Type().String())
}
return nil
}
// convert a field value of a struct to interface for put into db
func (session *Session) value2Interface(col *core.Column, fieldValue reflect.Value) (interface{}, error) {
if fieldValue.CanAddr() {
if fieldConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok {
data, err := fieldConvert.ToDB()
if err != nil {
return 0, err
}
return string(data), nil
}
}
if fieldConvert, ok := fieldValue.Interface().(core.Conversion); ok {
data, err := fieldConvert.ToDB()
if err != nil {
return 0, err
}
return string(data), nil
}
fieldType := fieldValue.Type()
k := fieldType.Kind()
if k == reflect.Ptr {
if fieldValue.IsNil() {
return nil, nil
} else if !fieldValue.IsValid() {
session.Engine.logger.Warn("the field[", col.FieldName, "] is invalid")
return nil, nil
} else {
// !nashtsai! deference pointer type to instance type
fieldValue = fieldValue.Elem()
fieldType = fieldValue.Type()
k = fieldType.Kind()
}
}
switch k {
case reflect.Bool:
return fieldValue.Bool(), nil
case reflect.String:
return fieldValue.String(), nil
case reflect.Struct:
if fieldType.ConvertibleTo(core.TimeType) {
t := fieldValue.Convert(core.TimeType).Interface().(time.Time)
if session.Engine.dialect.DBType() == core.MSSQL {
if t.IsZero() {
return nil, nil
}
}
tf := session.Engine.FormatTime(col.SQLType.Name, t)
return tf, nil
}
if !col.SQLType.IsJson() {
// !<winxxp>! 增加支持driver.Valuer接口的结构如sql.NullString
if v, ok := fieldValue.Interface().(driver.Valuer); ok {
return v.Value()
}
fieldTable := session.Engine.autoMapType(fieldValue)
if len(fieldTable.PrimaryKeys) == 1 {
pkField := reflect.Indirect(fieldValue).FieldByName(fieldTable.PKColumns()[0].FieldName)
return pkField.Interface(), nil
}
return 0, fmt.Errorf("no primary key for col %v", col.Name)
}
if col.SQLType.IsText() {
bytes, err := json.Marshal(fieldValue.Interface())
if err != nil {
session.Engine.logger.Error(err)
return 0, err
}
return string(bytes), nil
} else if col.SQLType.IsBlob() {
bytes, err := json.Marshal(fieldValue.Interface())
if err != nil {
session.Engine.logger.Error(err)
return 0, err
}
return bytes, nil
}
return nil, fmt.Errorf("Unsupported type %v", fieldValue.Type())
case reflect.Complex64, reflect.Complex128:
bytes, err := json.Marshal(fieldValue.Interface())
if err != nil {
session.Engine.logger.Error(err)
return 0, err
}
return string(bytes), nil
case reflect.Array, reflect.Slice, reflect.Map:
if !fieldValue.IsValid() {
return fieldValue.Interface(), nil
}
if col.SQLType.IsText() {
bytes, err := json.Marshal(fieldValue.Interface())
if err != nil {
session.Engine.logger.Error(err)
return 0, err
}
return string(bytes), nil
} else if col.SQLType.IsBlob() {
var bytes []byte
var err error
if (k == reflect.Array || k == reflect.Slice) &&
(fieldValue.Type().Elem().Kind() == reflect.Uint8) {
bytes = fieldValue.Bytes()
} else {
bytes, err = json.Marshal(fieldValue.Interface())
if err != nil {
session.Engine.logger.Error(err)
return 0, err
}
}
return bytes, nil
}
return nil, ErrUnSupportedType
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return int64(fieldValue.Uint()), nil
default:
return fieldValue.Interface(), nil
}
}
func (session *Session) innerInsert(bean interface{}) (int64, error) {
session.Statement.setRefValue(rValue(bean))
if len(session.Statement.TableName()) <= 0 {
return 0, ErrTableNotFound
}
table := session.Statement.RefTable
// handle BeforeInsertProcessor
for _, closure := range session.beforeClosures {
closure(bean)
}
cleanupProcessorsClosures(&session.beforeClosures) // cleanup after used
if processor, ok := interface{}(bean).(BeforeInsertProcessor); ok {
processor.BeforeInsert()
}
// --
colNames, args, err := genCols(session.Statement.RefTable, session, bean, false, false)
if err != nil {
return 0, err
}
// insert expr columns, override if exists
exprColumns := session.Statement.getExpr()
exprColVals := make([]string, 0, len(exprColumns))
for _, v := range exprColumns {
// remove the expr columns
for i, colName := range colNames {
if colName == v.colName {
colNames = append(colNames[:i], colNames[i+1:]...)
args = append(args[:i], args[i+1:]...)
}
}
// append expr column to the end
colNames = append(colNames, v.colName)
exprColVals = append(exprColVals, v.expr)
}
colPlaces := strings.Repeat("?, ", len(colNames)-len(exprColumns))
if len(exprColVals) > 0 {
colPlaces = colPlaces + strings.Join(exprColVals, ", ")
} else {
colPlaces = colPlaces[0 : len(colPlaces)-2]
}
sqlStr := fmt.Sprintf("INSERT INTO %s (%v%v%v) VALUES (%v)",
session.Engine.Quote(session.Statement.TableName()),
session.Engine.QuoteStr(),
strings.Join(colNames, session.Engine.Quote(", ")),
session.Engine.QuoteStr(),
colPlaces)
handleAfterInsertProcessorFunc := func(bean interface{}) {
if session.IsAutoCommit {
for _, closure := range session.afterClosures {
closure(bean)
}
if processor, ok := interface{}(bean).(AfterInsertProcessor); ok {
processor.AfterInsert()
}
} else {
lenAfterClosures := len(session.afterClosures)
if lenAfterClosures > 0 {
if value, has := session.afterInsertBeans[bean]; has && value != nil {
*value = append(*value, session.afterClosures...)
} else {
afterClosures := make([]func(interface{}), lenAfterClosures)
copy(afterClosures, session.afterClosures)
session.afterInsertBeans[bean] = &afterClosures
}
} else {
if _, ok := interface{}(bean).(AfterInsertProcessor); ok {
session.afterInsertBeans[bean] = nil
}
}
}
cleanupProcessorsClosures(&session.afterClosures) // cleanup after used
}
// for postgres, many of them didn't implement lastInsertId, so we should
// implemented it ourself.
if session.Engine.dialect.DBType() == core.ORACLE && len(table.AutoIncrement) > 0 {
//assert table.AutoIncrement != ""
res, err := session.query("select seq_atable.currval from dual", args...)
if err != nil {
return 0, err
}
handleAfterInsertProcessorFunc(bean)
if cacher := session.Engine.getCacher2(table); cacher != nil && session.Statement.UseCache {
session.cacheInsert(session.Statement.TableName())
}
if table.Version != "" && session.Statement.checkVersion {
verValue, err := table.VersionColumn().ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
} else if verValue.IsValid() && verValue.CanSet() {
verValue.SetInt(1)
}
}
if len(res) < 1 {
return 0, errors.New("insert no error but not returned id")
}
idByte := res[0][table.AutoIncrement]
id, err := strconv.ParseInt(string(idByte), 10, 64)
if err != nil || id <= 0 {
return 1, err
}
aiValue, err := table.AutoIncrColumn().ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
}
if aiValue == nil || !aiValue.IsValid() || !aiValue.CanSet() {
return 1, nil
}
aiValue.Set(int64ToIntValue(id, aiValue.Type()))
return 1, nil
} else if session.Engine.dialect.DBType() == core.POSTGRES && len(table.AutoIncrement) > 0 {
//assert table.AutoIncrement != ""
sqlStr = sqlStr + " RETURNING " + session.Engine.Quote(table.AutoIncrement)
res, err := session.query(sqlStr, args...)
if err != nil {
return 0, err
}
handleAfterInsertProcessorFunc(bean)
if cacher := session.Engine.getCacher2(table); cacher != nil && session.Statement.UseCache {
session.cacheInsert(session.Statement.TableName())
}
if table.Version != "" && session.Statement.checkVersion {
verValue, err := table.VersionColumn().ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
} else if verValue.IsValid() && verValue.CanSet() {
verValue.SetInt(1)
}
}
if len(res) < 1 {
return 0, errors.New("insert no error but not returned id")
}
idByte := res[0][table.AutoIncrement]
id, err := strconv.ParseInt(string(idByte), 10, 64)
if err != nil || id <= 0 {
return 1, err
}
aiValue, err := table.AutoIncrColumn().ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
}
if aiValue == nil || !aiValue.IsValid() || !aiValue.CanSet() {
return 1, nil
}
aiValue.Set(int64ToIntValue(id, aiValue.Type()))
return 1, nil
} else {
res, err := session.exec(sqlStr, args...)
if err != nil {
return 0, err
}
defer handleAfterInsertProcessorFunc(bean)
if cacher := session.Engine.getCacher2(table); cacher != nil && session.Statement.UseCache {
session.cacheInsert(session.Statement.TableName())
}
if table.Version != "" && session.Statement.checkVersion {
verValue, err := table.VersionColumn().ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
} else if verValue.IsValid() && verValue.CanSet() {
verValue.SetInt(1)
}
}
if table.AutoIncrement == "" {
return res.RowsAffected()
}
var id int64
id, err = res.LastInsertId()
if err != nil || id <= 0 {
return res.RowsAffected()
}
aiValue, err := table.AutoIncrColumn().ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
}
if aiValue == nil || !aiValue.IsValid() || !aiValue.CanSet() {
return res.RowsAffected()
}
aiValue.Set(int64ToIntValue(id, aiValue.Type()))
return res.RowsAffected()
}
}
// InsertOne insert only one struct into database as a record.
// The in parameter bean must a struct or a point to struct. The return
// parameter is inserted and error
func (session *Session) InsertOne(bean interface{}) (int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
return session.innerInsert(bean)
}
func (session *Session) cacheInsert(tables ...string) error {
if session.Statement.RefTable == nil {
return ErrCacheFailed
}
table := session.Statement.RefTable
cacher := session.Engine.getCacher2(table)
for _, t := range tables {
session.Engine.logger.Debug("[cache] clear sql:", t)
cacher.ClearIds(t)
}
return nil
}
func (session *Session) cacheUpdate(sqlStr string, args ...interface{}) error {
if session.Statement.RefTable == nil ||
session.Tx != nil {
return ErrCacheFailed
}
oldhead, newsql := session.Statement.convertUpdateSQL(sqlStr)
if newsql == "" {
return ErrCacheFailed
}
for _, filter := range session.Engine.dialect.Filters() {
newsql = filter.Do(newsql, session.Engine.dialect, session.Statement.RefTable)
}
session.Engine.logger.Debug("[cacheUpdate] new sql", oldhead, newsql)
var nStart int
if len(args) > 0 {
if strings.Index(sqlStr, "?") > -1 {
nStart = strings.Count(oldhead, "?")
} else {
// only for pq, TODO: if any other databse?
nStart = strings.Count(oldhead, "$")
}
}
table := session.Statement.RefTable
cacher := session.Engine.getCacher2(table)
tableName := session.Statement.TableName()
session.Engine.logger.Debug("[cacheUpdate] get cache sql", newsql, args[nStart:])
ids, err := core.GetCacheSql(cacher, tableName, newsql, args[nStart:])
if err != nil {
rows, err := session.DB().Query(newsql, args[nStart:]...)
if err != nil {
return err
}
defer rows.Close()
ids = make([]core.PK, 0)
for rows.Next() {
var res = make([]string, len(table.PrimaryKeys))
err = rows.ScanSlice(&res)
if err != nil {
return err
}
var pk core.PK = make([]interface{}, len(table.PrimaryKeys))
for i, col := range table.PKColumns() {
if col.SQLType.IsNumeric() {
n, err := strconv.ParseInt(res[i], 10, 64)
if err != nil {
return err
}
pk[i] = n
} else if col.SQLType.IsText() {
pk[i] = res[i]
} else {
return errors.New("not supported")
}
}
ids = append(ids, pk)
}
session.Engine.logger.Debug("[cacheUpdate] find updated id", ids)
} /*else {
session.Engine.LogDebug("[xorm:cacheUpdate] del cached sql:", tableName, newsql, args)
cacher.DelIds(tableName, genSqlKey(newsql, args))
}*/
for _, id := range ids {
sid, err := id.ToString()
if err != nil {
return err
}
if bean := cacher.GetBean(tableName, sid); bean != nil {
sqls := splitNNoCase(sqlStr, "where", 2)
if len(sqls) == 0 || len(sqls) > 2 {
return ErrCacheFailed
}
sqls = splitNNoCase(sqls[0], "set", 2)
if len(sqls) != 2 {
return ErrCacheFailed
}
kvs := strings.Split(strings.TrimSpace(sqls[1]), ",")
for idx, kv := range kvs {
sps := strings.SplitN(kv, "=", 2)
sps2 := strings.Split(sps[0], ".")
colName := sps2[len(sps2)-1]
if strings.Contains(colName, "`") {
colName = strings.TrimSpace(strings.Replace(colName, "`", "", -1))
} else if strings.Contains(colName, session.Engine.QuoteStr()) {
colName = strings.TrimSpace(strings.Replace(colName, session.Engine.QuoteStr(), "", -1))
} else {
session.Engine.logger.Debug("[cacheUpdate] cannot find column", tableName, colName)
return ErrCacheFailed
}
if col := table.GetColumn(colName); col != nil {
fieldValue, err := col.ValueOf(bean)
if err != nil {
session.Engine.logger.Error(err)
} else {
session.Engine.logger.Debug("[cacheUpdate] set bean field", bean, colName, fieldValue.Interface())
if col.IsVersion && session.Statement.checkVersion {
fieldValue.SetInt(fieldValue.Int() + 1)
} else {
fieldValue.Set(reflect.ValueOf(args[idx]))
}
}
} else {
session.Engine.logger.Errorf("[cacheUpdate] ERROR: column %v is not table %v's",
colName, table.Name)
}
}
session.Engine.logger.Debug("[cacheUpdate] update cache", tableName, id, bean)
cacher.PutBean(tableName, sid, bean)
}
}
session.Engine.logger.Debug("[cacheUpdate] clear cached table sql:", tableName)
cacher.ClearIds(tableName)
return nil
}
// 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 (session *Session) Update(bean interface{}, condiBean ...interface{}) (int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
v := rValue(bean)
t := v.Type()
var colNames []string
var args []interface{}
// handle before update processors
for _, closure := range session.beforeClosures {
closure(bean)
}
cleanupProcessorsClosures(&session.beforeClosures) // cleanup after used
if processor, ok := interface{}(bean).(BeforeUpdateProcessor); ok {
processor.BeforeUpdate()
}
// --
var err error
var isMap = t.Kind() == reflect.Map
var isStruct = t.Kind() == reflect.Struct
if isStruct {
session.Statement.setRefValue(v)
if len(session.Statement.TableName()) <= 0 {
return 0, ErrTableNotFound
}
if session.Statement.ColumnStr == "" {
colNames, args = buildUpdates(session.Engine, session.Statement.RefTable, bean, false, false,
false, false, session.Statement.allUseBool, session.Statement.useAllCols,
session.Statement.mustColumnMap, session.Statement.nullableMap,
session.Statement.columnMap, true, session.Statement.unscoped)
} else {
colNames, args, err = genCols(session.Statement.RefTable, session, bean, true, true)
if err != nil {
return 0, err
}
}
} else if isMap {
colNames = make([]string, 0)
args = make([]interface{}, 0)
bValue := reflect.Indirect(reflect.ValueOf(bean))
for _, v := range bValue.MapKeys() {
colNames = append(colNames, session.Engine.Quote(v.String())+" = ?")
args = append(args, bValue.MapIndex(v).Interface())
}
} else {
return 0, ErrParamsType
}
table := session.Statement.RefTable
if session.Statement.UseAutoTime && table != nil && table.Updated != "" {
colNames = append(colNames, session.Engine.Quote(table.Updated)+" = ?")
col := table.UpdatedColumn()
val, t := session.Engine.NowTime2(col.SQLType.Name)
args = append(args, val)
var colName = col.Name
if isStruct {
session.afterClosures = append(session.afterClosures, func(bean interface{}) {
col := table.GetColumn(colName)
setColumnTime(bean, col, t)
})
}
}
//for update action to like "column = column + ?"
incColumns := session.Statement.getInc()
for _, v := range incColumns {
colNames = append(colNames, session.Engine.Quote(v.colName)+" = "+session.Engine.Quote(v.colName)+" + ?")
args = append(args, v.arg)
}
//for update action to like "column = column - ?"
decColumns := session.Statement.getDec()
for _, v := range decColumns {
colNames = append(colNames, session.Engine.Quote(v.colName)+" = "+session.Engine.Quote(v.colName)+" - ?")
args = append(args, v.arg)
}
//for update action to like "column = expression"
exprColumns := session.Statement.getExpr()
for _, v := range exprColumns {
colNames = append(colNames, session.Engine.Quote(v.colName)+" = "+v.expr)
}
session.Statement.processIdParam()
var autoCond builder.Cond
if !session.Statement.noAutoCondition && len(condiBean) > 0 {
var err error
autoCond, err = session.Statement.buildConds(session.Statement.RefTable, condiBean[0], true, true, false, true, false)
if err != nil {
return 0, err
}
}
st := session.Statement
defer session.resetStatement()
var sqlStr string
var condArgs []interface{}
var condSQL string
cond := session.Statement.cond.And(autoCond)
doIncVer := false
var verValue *reflect.Value
if table != nil && table.Version != "" && session.Statement.checkVersion {
verValue, err = table.VersionColumn().ValueOf(bean)
if err != nil {
return 0, err
}
cond = cond.And(builder.Eq{session.Engine.Quote(table.Version): verValue.Interface()})
condSQL, condArgs, _ = builder.ToSQL(cond)
if len(condSQL) > 0 {
condSQL = "WHERE " + condSQL
}
if st.LimitN > 0 {
condSQL = condSQL + fmt.Sprintf(" LIMIT %d", st.LimitN)
}
sqlStr = fmt.Sprintf("UPDATE %v SET %v, %v %v",
session.Engine.Quote(session.Statement.TableName()),
strings.Join(colNames, ", "),
session.Engine.Quote(table.Version)+" = "+session.Engine.Quote(table.Version)+" + 1",
condSQL)
doIncVer = true
} else {
condSQL, condArgs, _ = builder.ToSQL(cond)
if len(condSQL) > 0 {
condSQL = "WHERE " + condSQL
}
if st.LimitN > 0 {
condSQL = condSQL + fmt.Sprintf(" LIMIT %d", st.LimitN)
}
sqlStr = fmt.Sprintf("UPDATE %v SET %v %v",
session.Engine.Quote(session.Statement.TableName()),
strings.Join(colNames, ", "),
condSQL)
}
res, err := session.exec(sqlStr, append(args, condArgs...)...)
if err != nil {
return 0, err
} else if doIncVer {
if verValue != nil && verValue.IsValid() && verValue.CanSet() {
verValue.SetInt(verValue.Int() + 1)
}
}
if table != nil {
if cacher := session.Engine.getCacher2(table); cacher != nil && session.Statement.UseCache {
cacher.ClearIds(session.Statement.TableName())
cacher.ClearBeans(session.Statement.TableName())
}
}
// handle after update processors
if session.IsAutoCommit {
for _, closure := range session.afterClosures {
closure(bean)
}
if processor, ok := interface{}(bean).(AfterUpdateProcessor); ok {
session.Engine.logger.Debug("[event]", session.Statement.TableName(), " has after update processor")
processor.AfterUpdate()
}
} else {
lenAfterClosures := len(session.afterClosures)
if lenAfterClosures > 0 {
if value, has := session.afterUpdateBeans[bean]; has && value != nil {
*value = append(*value, session.afterClosures...)
} else {
afterClosures := make([]func(interface{}), lenAfterClosures)
copy(afterClosures, session.afterClosures)
// FIXME: if bean is a map type, it will panic because map cannot be as map key
session.afterUpdateBeans[bean] = &afterClosures
}
} else {
if _, ok := interface{}(bean).(AfterInsertProcessor); ok {
session.afterUpdateBeans[bean] = nil
}
}
}
cleanupProcessorsClosures(&session.afterClosures) // cleanup after used
// --
return res.RowsAffected()
}
func (session *Session) cacheDelete(sqlStr string, args ...interface{}) error {
if session.Statement.RefTable == nil ||
session.Tx != nil {
return ErrCacheFailed
}
for _, filter := range session.Engine.dialect.Filters() {
sqlStr = filter.Do(sqlStr, session.Engine.dialect, session.Statement.RefTable)
}
newsql := session.Statement.convertIDSQL(sqlStr)
if newsql == "" {
return ErrCacheFailed
}
cacher := session.Engine.getCacher2(session.Statement.RefTable)
tableName := session.Statement.TableName()
ids, err := core.GetCacheSql(cacher, tableName, newsql, args)
if err != nil {
resultsSlice, err := session.query(newsql, args...)
if err != nil {
return err
}
ids = make([]core.PK, 0)
if len(resultsSlice) > 0 {
for _, data := range resultsSlice {
var id int64
var pk core.PK = make([]interface{}, 0)
for _, col := range session.Statement.RefTable.PKColumns() {
if v, ok := data[col.Name]; !ok {
return errors.New("no id")
} else if col.SQLType.IsText() {
pk = append(pk, string(v))
} else if col.SQLType.IsNumeric() {
id, err = strconv.ParseInt(string(v), 10, 64)
if err != nil {
return err
}
pk = append(pk, id)
} else {
return errors.New("not supported primary key type")
}
}
ids = append(ids, pk)
}
}
} /*else {
session.Engine.LogDebug("delete cache sql %v", newsql)
cacher.DelIds(tableName, genSqlKey(newsql, args))
}*/
for _, id := range ids {
session.Engine.logger.Debug("[cacheDelete] delete cache obj", tableName, id)
sid, err := id.ToString()
if err != nil {
return err
}
cacher.DelBean(tableName, sid)
}
session.Engine.logger.Debug("[cacheDelete] clear cache sql", tableName)
cacher.ClearIds(tableName)
return nil
}
// Delete records, bean's non-empty fields are conditions
func (session *Session) Delete(bean interface{}) (int64, error) {
defer session.resetStatement()
if session.IsAutoClose {
defer session.Close()
}
session.Statement.setRefValue(rValue(bean))
var table = session.Statement.RefTable
// handle before delete processors
for _, closure := range session.beforeClosures {
closure(bean)
}
cleanupProcessorsClosures(&session.beforeClosures)
if processor, ok := interface{}(bean).(BeforeDeleteProcessor); ok {
processor.BeforeDelete()
}
// --
condSQL, condArgs, _ := session.Statement.genConds(bean)
if len(condSQL) == 0 && session.Statement.LimitN == 0 {
return 0, ErrNeedDeletedCond
}
var tableName = session.Engine.Quote(session.Statement.TableName())
var deleteSQL string
if len(condSQL) > 0 {
deleteSQL = fmt.Sprintf("DELETE FROM %v WHERE %v", tableName, condSQL)
} else {
deleteSQL = fmt.Sprintf("DELETE FROM %v", tableName)
}
var orderSQL string
if len(session.Statement.OrderStr) > 0 {
orderSQL += fmt.Sprintf(" ORDER BY %s", session.Statement.OrderStr)
}
if session.Statement.LimitN > 0 {
orderSQL += fmt.Sprintf(" LIMIT %d", session.Statement.LimitN)
}
if len(orderSQL) > 0 {
switch session.Engine.dialect.DBType() {
case core.POSTGRES:
inSQL := fmt.Sprintf("ctid IN (SELECT ctid FROM %s%s)", tableName, orderSQL)
if len(condSQL) > 0 {
deleteSQL += " AND " + inSQL
} else {
deleteSQL += " WHERE " + inSQL
}
case core.SQLITE:
inSQL := fmt.Sprintf("rowid IN (SELECT rowid FROM %s%s)", tableName, orderSQL)
if len(condSQL) > 0 {
deleteSQL += " AND " + inSQL
} else {
deleteSQL += " WHERE " + inSQL
}
// TODO: how to handle delete limit on mssql?
case core.MSSQL:
return 0, ErrNotImplemented
default:
deleteSQL += orderSQL
}
}
var realSQL string
argsForCache := make([]interface{}, 0, len(condArgs)*2)
if session.Statement.unscoped || table.DeletedColumn() == nil { // tag "deleted" is disabled
realSQL = deleteSQL
copy(argsForCache, condArgs)
argsForCache = append(condArgs, argsForCache...)
} else {
// !oinume! sqlStrForCache and argsForCache is needed to behave as executing "DELETE FROM ..." for cache.
copy(argsForCache, condArgs)
argsForCache = append(condArgs, argsForCache...)
deletedColumn := table.DeletedColumn()
realSQL = fmt.Sprintf("UPDATE %v SET %v = ? WHERE %v",
session.Engine.Quote(session.Statement.TableName()),
session.Engine.Quote(deletedColumn.Name),
condSQL)
if len(orderSQL) > 0 {
switch session.Engine.dialect.DBType() {
case core.POSTGRES:
inSQL := fmt.Sprintf("ctid IN (SELECT ctid FROM %s%s)", tableName, orderSQL)
if len(condSQL) > 0 {
realSQL += " AND " + inSQL
} else {
realSQL += " WHERE " + inSQL
}
case core.SQLITE:
inSQL := fmt.Sprintf("rowid IN (SELECT rowid FROM %s%s)", tableName, orderSQL)
if len(condSQL) > 0 {
realSQL += " AND " + inSQL
} else {
realSQL += " WHERE " + inSQL
}
// TODO: how to handle delete limit on mssql?
case core.MSSQL:
return 0, ErrNotImplemented
default:
realSQL += orderSQL
}
}
// !oinume! Insert NowTime to the head of session.Statement.Params
condArgs = append(condArgs, "")
paramsLen := len(condArgs)
copy(condArgs[1:paramsLen], condArgs[0:paramsLen-1])
val, t := session.Engine.NowTime2(deletedColumn.SQLType.Name)
condArgs[0] = val
var colName = deletedColumn.Name
session.afterClosures = append(session.afterClosures, func(bean interface{}) {
col := table.GetColumn(colName)
setColumnTime(bean, col, t)
})
}
if cacher := session.Engine.getCacher2(session.Statement.RefTable); cacher != nil && session.Statement.UseCache {
session.cacheDelete(deleteSQL, argsForCache...)
}
res, err := session.exec(realSQL, condArgs...)
if err != nil {
return 0, err
}
// handle after delete processors
if session.IsAutoCommit {
for _, closure := range session.afterClosures {
closure(bean)
}
if processor, ok := interface{}(bean).(AfterDeleteProcessor); ok {
processor.AfterDelete()
}
} else {
lenAfterClosures := len(session.afterClosures)
if lenAfterClosures > 0 {
if value, has := session.afterDeleteBeans[bean]; has && value != nil {
*value = append(*value, session.afterClosures...)
} else {
afterClosures := make([]func(interface{}), lenAfterClosures)
copy(afterClosures, session.afterClosures)
session.afterDeleteBeans[bean] = &afterClosures
}
} else {
if _, ok := interface{}(bean).(AfterInsertProcessor); ok {
session.afterDeleteBeans[bean] = nil
}
}
}
cleanupProcessorsClosures(&session.afterClosures)
// --
return res.RowsAffected()
}
// saveLastSQL stores executed query information
func (session *Session) saveLastSQL(sql string, args ...interface{}) {
session.lastSQL = sql
session.lastSQLArgs = args
session.Engine.logSQL(sql, args...)
}
// LastSQL returns last query information
func (session *Session) LastSQL() (string, []interface{}) {
return session.lastSQL, session.lastSQLArgs
}
// tbName get some table's table name
func (session *Session) tbNameNoSchema(table *core.Table) string {
if len(session.Statement.AltTableName) > 0 {
return session.Statement.AltTableName
}
return table.Name
}
// Sync2 synchronize structs to database tables
func (session *Session) Sync2(beans ...interface{}) error {
engine := session.Engine
tables, err := engine.DBMetas()
if err != nil {
return err
}
var structTables []*core.Table
for _, bean := range beans {
v := rValue(bean)
table := engine.mapType(v)
structTables = append(structTables, table)
var tbName = session.tbNameNoSchema(table)
var oriTable *core.Table
for _, tb := range tables {
if strings.EqualFold(tb.Name, tbName) {
oriTable = tb
break
}
}
if oriTable == nil {
err = session.StoreEngine(session.Statement.StoreEngine).CreateTable(bean)
if err != nil {
return err
}
err = session.CreateUniques(bean)
if err != nil {
return err
}
err = session.CreateIndexes(bean)
if err != nil {
return err
}
} else {
for _, col := range table.Columns() {
var oriCol *core.Column
for _, col2 := range oriTable.Columns() {
if strings.EqualFold(col.Name, col2.Name) {
oriCol = col2
break
}
}
if oriCol != nil {
expectedType := engine.dialect.SqlType(col)
curType := engine.dialect.SqlType(oriCol)
if expectedType != curType {
if expectedType == core.Text &&
strings.HasPrefix(curType, core.Varchar) {
// currently only support mysql & postgres
if engine.dialect.DBType() == core.MYSQL ||
engine.dialect.DBType() == core.POSTGRES {
engine.logger.Infof("Table %s column %s change type from %s to %s\n",
tbName, col.Name, curType, expectedType)
_, err = engine.Exec(engine.dialect.ModifyColumnSql(table.Name, col))
} else {
engine.logger.Warnf("Table %s column %s db type is %s, struct type is %s\n",
tbName, col.Name, curType, expectedType)
}
} else if strings.HasPrefix(curType, core.Varchar) && strings.HasPrefix(expectedType, core.Varchar) {
if engine.dialect.DBType() == core.MYSQL {
if oriCol.Length < col.Length {
engine.logger.Infof("Table %s column %s change type from varchar(%d) to varchar(%d)\n",
tbName, col.Name, oriCol.Length, col.Length)
_, err = engine.Exec(engine.dialect.ModifyColumnSql(table.Name, col))
}
}
} else {
if !(strings.HasPrefix(curType, expectedType) && curType[len(expectedType)] == '(') {
engine.logger.Warnf("Table %s column %s db type is %s, struct type is %s",
tbName, col.Name, curType, expectedType)
}
}
} else if expectedType == core.Varchar {
if engine.dialect.DBType() == core.MYSQL {
if oriCol.Length < col.Length {
engine.logger.Infof("Table %s column %s change type from varchar(%d) to varchar(%d)\n",
tbName, col.Name, oriCol.Length, col.Length)
_, err = engine.Exec(engine.dialect.ModifyColumnSql(table.Name, col))
}
}
}
if col.Default != oriCol.Default {
engine.logger.Warnf("Table %s Column %s db default is %s, struct default is %s",
tbName, col.Name, oriCol.Default, col.Default)
}
if col.Nullable != oriCol.Nullable {
engine.logger.Warnf("Table %s Column %s db nullable is %v, struct nullable is %v",
tbName, col.Name, oriCol.Nullable, col.Nullable)
}
} else {
session := engine.NewSession()
session.Statement.RefTable = table
session.Statement.tableName = tbName
defer session.Close()
err = session.addColumn(col.Name)
}
if err != nil {
return err
}
}
var foundIndexNames = make(map[string]bool)
var addedNames = make(map[string]*core.Index)
for name, index := range table.Indexes {
var oriIndex *core.Index
for name2, index2 := range oriTable.Indexes {
if index.Equal(index2) {
oriIndex = index2
foundIndexNames[name2] = true
break
}
}
if oriIndex != nil {
if oriIndex.Type != index.Type {
sql := engine.dialect.DropIndexSql(tbName, oriIndex)
_, err = engine.Exec(sql)
if err != nil {
return err
}
oriIndex = nil
}
}
if oriIndex == nil {
addedNames[name] = index
}
}
for name2, index2 := range oriTable.Indexes {
if _, ok := foundIndexNames[name2]; !ok {
sql := engine.dialect.DropIndexSql(tbName, index2)
_, err = engine.Exec(sql)
if err != nil {
return err
}
}
}
for name, index := range addedNames {
if index.Type == core.UniqueType {
session := engine.NewSession()
session.Statement.RefTable = table
session.Statement.tableName = tbName
defer session.Close()
err = session.addUnique(tbName, name)
} else if index.Type == core.IndexType {
session := engine.NewSession()
session.Statement.RefTable = table
session.Statement.tableName = tbName
defer session.Close()
err = session.addIndex(tbName, name)
}
if err != nil {
return err
}
}
}
}
for _, table := range tables {
var oriTable *core.Table
for _, structTable := range structTables {
if strings.EqualFold(table.Name, session.tbNameNoSchema(structTable)) {
oriTable = structTable
break
}
}
if oriTable == nil {
//engine.LogWarnf("Table %s has no struct to mapping it", table.Name)
continue
}
for _, colName := range table.ColumnsSeq() {
if oriTable.GetColumn(colName) == nil {
engine.logger.Warnf("Table %s has column %s but struct has not related field", table.Name, colName)
}
}
}
return nil
}
// Unscoped always disable struct tag "deleted"
func (session *Session) Unscoped() *Session {
session.Statement.Unscoped()
return session
}