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662 lines
19 KiB
662 lines
19 KiB
// Copyright 2017 The Xorm Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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package xorm |
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import ( |
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"database/sql" |
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"database/sql/driver" |
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"encoding/json" |
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"errors" |
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"fmt" |
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"reflect" |
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"strconv" |
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"strings" |
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"time" |
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|
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"github.com/go-xorm/core" |
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) |
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func (session *Session) str2Time(col *core.Column, data string) (outTime time.Time, outErr error) { |
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sdata := strings.TrimSpace(data) |
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var x time.Time |
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var err error |
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var parseLoc = session.engine.DatabaseTZ |
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if col.TimeZone != nil { |
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parseLoc = col.TimeZone |
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} |
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if sdata == zeroTime0 || sdata == zeroTime1 { |
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} else if !strings.ContainsAny(sdata, "- :") { // !nashtsai! has only found that mymysql driver is using this for time type column |
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// time stamp |
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sd, err := strconv.ParseInt(sdata, 10, 64) |
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if err == nil { |
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x = time.Unix(sd, 0) |
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//session.engine.logger.Debugf("time(0) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} else { |
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//session.engine.logger.Debugf("time(0) err key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} |
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} else if len(sdata) > 19 && strings.Contains(sdata, "-") { |
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x, err = time.ParseInLocation(time.RFC3339Nano, sdata, parseLoc) |
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session.engine.logger.Debugf("time(1) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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if err != nil { |
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x, err = time.ParseInLocation("2006-01-02 15:04:05.999999999", sdata, parseLoc) |
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//session.engine.logger.Debugf("time(2) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} |
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if err != nil { |
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x, err = time.ParseInLocation("2006-01-02 15:04:05.9999999 Z07:00", sdata, parseLoc) |
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//session.engine.logger.Debugf("time(3) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} |
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} else if len(sdata) == 19 && strings.Contains(sdata, "-") { |
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x, err = time.ParseInLocation("2006-01-02 15:04:05", sdata, parseLoc) |
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//session.engine.logger.Debugf("time(4) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} else if len(sdata) == 10 && sdata[4] == '-' && sdata[7] == '-' { |
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x, err = time.ParseInLocation("2006-01-02", sdata, parseLoc) |
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//session.engine.logger.Debugf("time(5) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} else if col.SQLType.Name == core.Time { |
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if strings.Contains(sdata, " ") { |
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ssd := strings.Split(sdata, " ") |
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sdata = ssd[1] |
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} |
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sdata = strings.TrimSpace(sdata) |
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if session.engine.dialect.DBType() == core.MYSQL && len(sdata) > 8 { |
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sdata = sdata[len(sdata)-8:] |
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} |
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st := fmt.Sprintf("2006-01-02 %v", sdata) |
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x, err = time.ParseInLocation("2006-01-02 15:04:05", st, parseLoc) |
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//session.engine.logger.Debugf("time(6) key[%v]: %+v | sdata: [%v]\n", col.FieldName, x, sdata) |
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} else { |
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outErr = fmt.Errorf("unsupported time format %v", sdata) |
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return |
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} |
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if err != nil { |
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outErr = fmt.Errorf("unsupported time format %v: %v", sdata, err) |
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return |
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} |
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outTime = x.In(session.engine.TZLocation) |
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return |
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} |
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func (session *Session) byte2Time(col *core.Column, data []byte) (outTime time.Time, outErr error) { |
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return session.str2Time(col, string(data)) |
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} |
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// convert a db data([]byte) to a field value |
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func (session *Session) bytes2Value(col *core.Column, fieldValue *reflect.Value, data []byte) error { |
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if structConvert, ok := fieldValue.Addr().Interface().(core.Conversion); ok { |
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return structConvert.FromDB(data) |
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} |
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if structConvert, ok := fieldValue.Interface().(core.Conversion); ok { |
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return structConvert.FromDB(data) |
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} |
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var v interface{} |
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key := col.Name |
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fieldType := fieldValue.Type() |
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switch fieldType.Kind() { |
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case reflect.Complex64, reflect.Complex128: |
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x := reflect.New(fieldType) |
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if len(data) > 0 { |
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err := json.Unmarshal(data, x.Interface()) |
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if err != nil { |
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session.engine.logger.Error(err) |
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return err |
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} |
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fieldValue.Set(x.Elem()) |
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} |
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case reflect.Slice, reflect.Array, reflect.Map: |
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v = data |
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t := fieldType.Elem() |
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k := t.Kind() |
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if col.SQLType.IsText() { |
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x := reflect.New(fieldType) |
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if len(data) > 0 { |
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err := json.Unmarshal(data, x.Interface()) |
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if err != nil { |
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session.engine.logger.Error(err) |
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return err |
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} |
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fieldValue.Set(x.Elem()) |
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} |
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} else if col.SQLType.IsBlob() { |
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if k == reflect.Uint8 { |
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fieldValue.Set(reflect.ValueOf(v)) |
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} else { |
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x := reflect.New(fieldType) |
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if len(data) > 0 { |
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err := json.Unmarshal(data, x.Interface()) |
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if err != nil { |
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session.engine.logger.Error(err) |
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return err |
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} |
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fieldValue.Set(x.Elem()) |
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} |
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} |
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} else { |
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return ErrUnSupportedType |
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} |
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case reflect.String: |
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fieldValue.SetString(string(data)) |
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case reflect.Bool: |
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v, err := asBool(data) |
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if err != nil { |
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return fmt.Errorf("arg %v as bool: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(v)) |
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: |
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sdata := string(data) |
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var x int64 |
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var err error |
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// for mysql, when use bit, it returned \x01 |
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if col.SQLType.Name == core.Bit && |
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session.engine.dialect.DBType() == core.MYSQL { // !nashtsai! TODO dialect needs to provide conversion interface API |
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if len(data) == 1 { |
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x = int64(data[0]) |
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} else { |
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x = 0 |
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} |
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} else if strings.HasPrefix(sdata, "0x") { |
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x, err = strconv.ParseInt(sdata, 16, 64) |
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} else if strings.HasPrefix(sdata, "0") { |
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x, err = strconv.ParseInt(sdata, 8, 64) |
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} else if strings.EqualFold(sdata, "true") { |
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x = 1 |
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} else if strings.EqualFold(sdata, "false") { |
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x = 0 |
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} else { |
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x, err = strconv.ParseInt(sdata, 10, 64) |
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} |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.SetInt(x) |
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case reflect.Float32, reflect.Float64: |
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x, err := strconv.ParseFloat(string(data), 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as float64: %s", key, err.Error()) |
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} |
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fieldValue.SetFloat(x) |
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case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint: |
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x, err := strconv.ParseUint(string(data), 10, 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.SetUint(x) |
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//Currently only support Time type |
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case reflect.Struct: |
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// !<winxxp>! 增加支持sql.Scanner接口的结构，如sql.NullString |
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if nulVal, ok := fieldValue.Addr().Interface().(sql.Scanner); ok { |
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if err := nulVal.Scan(data); err != nil { |
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return fmt.Errorf("sql.Scan(%v) failed: %s ", data, err.Error()) |
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} |
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} else { |
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if fieldType.ConvertibleTo(core.TimeType) { |
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x, err := session.byte2Time(col, data) |
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if err != nil { |
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return err |
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} |
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v = x |
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fieldValue.Set(reflect.ValueOf(v).Convert(fieldType)) |
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} else if session.statement.UseCascade { |
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table, err := session.engine.autoMapType(*fieldValue) |
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if err != nil { |
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return err |
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} |
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// TODO: current only support 1 primary key |
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if len(table.PrimaryKeys) > 1 { |
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return errors.New("unsupported composited primary key cascade") |
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} |
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var pk = make(core.PK, len(table.PrimaryKeys)) |
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rawValueType := table.ColumnType(table.PKColumns()[0].FieldName) |
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pk[0], err = str2PK(string(data), rawValueType) |
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if err != nil { |
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return err |
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} |
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if !isPKZero(pk) { |
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// !nashtsai! TODO for hasOne relationship, it's preferred to use join query for eager fetch |
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// however, also need to consider adding a 'lazy' attribute to xorm tag which allow hasOne |
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// property to be fetched lazily |
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structInter := reflect.New(fieldValue.Type()) |
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has, err := session.ID(pk).NoCascade().get(structInter.Interface()) |
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if err != nil { |
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return err |
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} |
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if has { |
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v = structInter.Elem().Interface() |
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fieldValue.Set(reflect.ValueOf(v)) |
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} else { |
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return errors.New("cascade obj is not exist") |
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} |
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} |
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} |
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} |
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case reflect.Ptr: |
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// !nashtsai! TODO merge duplicated codes above |
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//typeStr := fieldType.String() |
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switch fieldType.Elem().Kind() { |
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// case "*string": |
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case core.StringType.Kind(): |
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x := string(data) |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*bool": |
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case core.BoolType.Kind(): |
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d := string(data) |
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v, err := strconv.ParseBool(d) |
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if err != nil { |
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return fmt.Errorf("arg %v as bool: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&v).Convert(fieldType)) |
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// case "*complex64": |
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case core.Complex64Type.Kind(): |
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var x complex64 |
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if len(data) > 0 { |
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err := json.Unmarshal(data, &x) |
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if err != nil { |
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session.engine.logger.Error(err) |
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return err |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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} |
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// case "*complex128": |
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case core.Complex128Type.Kind(): |
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var x complex128 |
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if len(data) > 0 { |
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err := json.Unmarshal(data, &x) |
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if err != nil { |
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session.engine.logger.Error(err) |
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return err |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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} |
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// case "*float64": |
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case core.Float64Type.Kind(): |
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x, err := strconv.ParseFloat(string(data), 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as float64: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*float32": |
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case core.Float32Type.Kind(): |
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var x float32 |
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x1, err := strconv.ParseFloat(string(data), 32) |
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if err != nil { |
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return fmt.Errorf("arg %v as float32: %s", key, err.Error()) |
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} |
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x = float32(x1) |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*uint64": |
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case core.Uint64Type.Kind(): |
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var x uint64 |
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x, err := strconv.ParseUint(string(data), 10, 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*uint": |
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case core.UintType.Kind(): |
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var x uint |
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x1, err := strconv.ParseUint(string(data), 10, 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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x = uint(x1) |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*uint32": |
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case core.Uint32Type.Kind(): |
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var x uint32 |
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x1, err := strconv.ParseUint(string(data), 10, 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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x = uint32(x1) |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*uint8": |
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case core.Uint8Type.Kind(): |
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var x uint8 |
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x1, err := strconv.ParseUint(string(data), 10, 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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x = uint8(x1) |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*uint16": |
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case core.Uint16Type.Kind(): |
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var x uint16 |
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x1, err := strconv.ParseUint(string(data), 10, 64) |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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x = uint16(x1) |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*int64": |
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case core.Int64Type.Kind(): |
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sdata := string(data) |
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var x int64 |
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var err error |
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// for mysql, when use bit, it returned \x01 |
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if col.SQLType.Name == core.Bit && |
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strings.Contains(session.engine.DriverName(), "mysql") { |
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if len(data) == 1 { |
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x = int64(data[0]) |
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} else { |
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x = 0 |
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} |
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} else if strings.HasPrefix(sdata, "0x") { |
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x, err = strconv.ParseInt(sdata, 16, 64) |
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} else if strings.HasPrefix(sdata, "0") { |
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x, err = strconv.ParseInt(sdata, 8, 64) |
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} else { |
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x, err = strconv.ParseInt(sdata, 10, 64) |
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} |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*int": |
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case core.IntType.Kind(): |
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sdata := string(data) |
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var x int |
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var x1 int64 |
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var err error |
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// for mysql, when use bit, it returned \x01 |
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if col.SQLType.Name == core.Bit && |
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strings.Contains(session.engine.DriverName(), "mysql") { |
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if len(data) == 1 { |
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x = int(data[0]) |
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} else { |
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x = 0 |
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} |
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} else if strings.HasPrefix(sdata, "0x") { |
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x1, err = strconv.ParseInt(sdata, 16, 64) |
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x = int(x1) |
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} else if strings.HasPrefix(sdata, "0") { |
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x1, err = strconv.ParseInt(sdata, 8, 64) |
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x = int(x1) |
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} else { |
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x1, err = strconv.ParseInt(sdata, 10, 64) |
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x = int(x1) |
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} |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*int32": |
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case core.Int32Type.Kind(): |
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sdata := string(data) |
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var x int32 |
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var x1 int64 |
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var err error |
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// for mysql, when use bit, it returned \x01 |
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if col.SQLType.Name == core.Bit && |
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session.engine.dialect.DBType() == core.MYSQL { |
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if len(data) == 1 { |
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x = int32(data[0]) |
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} else { |
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x = 0 |
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} |
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} else if strings.HasPrefix(sdata, "0x") { |
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x1, err = strconv.ParseInt(sdata, 16, 64) |
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x = int32(x1) |
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} else if strings.HasPrefix(sdata, "0") { |
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x1, err = strconv.ParseInt(sdata, 8, 64) |
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x = int32(x1) |
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} else { |
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x1, err = strconv.ParseInt(sdata, 10, 64) |
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x = int32(x1) |
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} |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*int8": |
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case core.Int8Type.Kind(): |
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sdata := string(data) |
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var x int8 |
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var x1 int64 |
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var err error |
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// for mysql, when use bit, it returned \x01 |
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if col.SQLType.Name == core.Bit && |
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strings.Contains(session.engine.DriverName(), "mysql") { |
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if len(data) == 1 { |
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x = int8(data[0]) |
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} else { |
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x = 0 |
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} |
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} else if strings.HasPrefix(sdata, "0x") { |
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x1, err = strconv.ParseInt(sdata, 16, 64) |
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x = int8(x1) |
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} else if strings.HasPrefix(sdata, "0") { |
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x1, err = strconv.ParseInt(sdata, 8, 64) |
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x = int8(x1) |
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} else { |
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x1, err = strconv.ParseInt(sdata, 10, 64) |
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x = int8(x1) |
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} |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*int16": |
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case core.Int16Type.Kind(): |
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sdata := string(data) |
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var x int16 |
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var x1 int64 |
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var err error |
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// for mysql, when use bit, it returned \x01 |
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if col.SQLType.Name == core.Bit && |
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strings.Contains(session.engine.DriverName(), "mysql") { |
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if len(data) == 1 { |
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x = int16(data[0]) |
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} else { |
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x = 0 |
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} |
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} else if strings.HasPrefix(sdata, "0x") { |
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x1, err = strconv.ParseInt(sdata, 16, 64) |
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x = int16(x1) |
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} else if strings.HasPrefix(sdata, "0") { |
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x1, err = strconv.ParseInt(sdata, 8, 64) |
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x = int16(x1) |
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} else { |
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x1, err = strconv.ParseInt(sdata, 10, 64) |
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x = int16(x1) |
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} |
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if err != nil { |
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return fmt.Errorf("arg %v as int: %s", key, err.Error()) |
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} |
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fieldValue.Set(reflect.ValueOf(&x).Convert(fieldType)) |
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// case "*SomeStruct": |
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case reflect.Struct: |
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switch fieldType { |
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// case "*.time.Time": |
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case core.PtrTimeType: |
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x, err := session.byte2Time(col, data) |
|
if err != nil { |
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return err |
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} |
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v = x |
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fieldValue.Set(reflect.ValueOf(&x)) |
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default: |
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if session.statement.UseCascade { |
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structInter := reflect.New(fieldType.Elem()) |
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table, err := session.engine.autoMapType(structInter.Elem()) |
|
if err != nil { |
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return err |
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} |
|
|
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if len(table.PrimaryKeys) > 1 { |
|
return errors.New("unsupported composited primary key cascade") |
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} |
|
|
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var pk = make(core.PK, len(table.PrimaryKeys)) |
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rawValueType := table.ColumnType(table.PKColumns()[0].FieldName) |
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pk[0], err = str2PK(string(data), rawValueType) |
|
if err != nil { |
|
return err |
|
} |
|
|
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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 |
|
has, err := session.ID(pk).NoCascade().get(structInter.Interface()) |
|
if err != nil { |
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return err |
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} |
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if has { |
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v = structInter.Interface() |
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fieldValue.Set(reflect.ValueOf(v)) |
|
} else { |
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return errors.New("cascade obj is not exist") |
|
} |
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} |
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} else { |
|
return fmt.Errorf("unsupported struct type in Scan: %s", fieldValue.Type().String()) |
|
} |
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} |
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default: |
|
return fmt.Errorf("unsupported type in Scan: %s", fieldValue.Type().String()) |
|
} |
|
default: |
|
return fmt.Errorf("unsupported type in Scan: %s", fieldValue.Type().String()) |
|
} |
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|
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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 |
|
} |
|
if col.SQLType.IsBlob() { |
|
return data, nil |
|
} |
|
return string(data), nil |
|
} |
|
} |
|
|
|
if fieldConvert, ok := fieldValue.Interface().(core.Conversion); ok { |
|
data, err := fieldConvert.ToDB() |
|
if err != nil { |
|
return 0, err |
|
} |
|
if col.SQLType.IsBlob() { |
|
return data, nil |
|
} |
|
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) |
|
tf := session.engine.formatColTime(col, 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, err := session.engine.autoMapType(fieldValue) |
|
if err != nil { |
|
return nil, err |
|
} |
|
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 |
|
} |
|
}
|
|
|