617 lines
14 KiB
Go
617 lines
14 KiB
Go
// Copyright 2015 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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import (
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"errors"
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"fmt"
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"reflect"
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"sort"
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"strconv"
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"strings"
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"time"
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"github.com/go-xorm/core"
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)
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// str2PK convert string value to primary key value according to tp
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func str2PKValue(s string, tp reflect.Type) (reflect.Value, error) {
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var err error
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var result interface{}
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var defReturn = reflect.Zero(tp)
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switch tp.Kind() {
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case reflect.Int:
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result, err = strconv.Atoi(s)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as int: %s", s, err.Error())
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}
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case reflect.Int8:
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x, err := strconv.Atoi(s)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as int8: %s", s, err.Error())
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}
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result = int8(x)
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case reflect.Int16:
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x, err := strconv.Atoi(s)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as int16: %s", s, err.Error())
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}
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result = int16(x)
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case reflect.Int32:
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x, err := strconv.Atoi(s)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as int32: %s", s, err.Error())
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}
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result = int32(x)
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case reflect.Int64:
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result, err = strconv.ParseInt(s, 10, 64)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as int64: %s", s, err.Error())
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}
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case reflect.Uint:
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x, err := strconv.ParseUint(s, 10, 64)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as uint: %s", s, err.Error())
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}
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result = uint(x)
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case reflect.Uint8:
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x, err := strconv.ParseUint(s, 10, 64)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as uint8: %s", s, err.Error())
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}
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result = uint8(x)
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case reflect.Uint16:
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x, err := strconv.ParseUint(s, 10, 64)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as uint16: %s", s, err.Error())
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}
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result = uint16(x)
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case reflect.Uint32:
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x, err := strconv.ParseUint(s, 10, 64)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as uint32: %s", s, err.Error())
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}
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result = uint32(x)
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case reflect.Uint64:
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result, err = strconv.ParseUint(s, 10, 64)
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if err != nil {
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return defReturn, fmt.Errorf("convert %s as uint64: %s", s, err.Error())
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}
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case reflect.String:
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result = s
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default:
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return defReturn, errors.New("unsupported convert type")
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}
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return reflect.ValueOf(result).Convert(tp), nil
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}
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func str2PK(s string, tp reflect.Type) (interface{}, error) {
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v, err := str2PKValue(s, tp)
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if err != nil {
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return nil, err
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}
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return v.Interface(), nil
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}
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func splitTag(tag string) (tags []string) {
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tag = strings.TrimSpace(tag)
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var hasQuote = false
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var lastIdx = 0
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for i, t := range tag {
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if t == '\'' {
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hasQuote = !hasQuote
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} else if t == ' ' {
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if lastIdx < i && !hasQuote {
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tags = append(tags, strings.TrimSpace(tag[lastIdx:i]))
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lastIdx = i + 1
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}
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}
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}
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if lastIdx < len(tag) {
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tags = append(tags, strings.TrimSpace(tag[lastIdx:]))
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}
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return
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}
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type zeroable interface {
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IsZero() bool
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}
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func isZero(k interface{}) bool {
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switch k.(type) {
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case int:
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return k.(int) == 0
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case int8:
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return k.(int8) == 0
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case int16:
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return k.(int16) == 0
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case int32:
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return k.(int32) == 0
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case int64:
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return k.(int64) == 0
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case uint:
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return k.(uint) == 0
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case uint8:
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return k.(uint8) == 0
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case uint16:
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return k.(uint16) == 0
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case uint32:
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return k.(uint32) == 0
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case uint64:
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return k.(uint64) == 0
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case float32:
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return k.(float32) == 0
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case float64:
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return k.(float64) == 0
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case bool:
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return k.(bool) == false
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case string:
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return k.(string) == ""
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case zeroable:
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return k.(zeroable).IsZero()
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}
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return false
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}
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func isStructZero(v reflect.Value) bool {
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if !v.IsValid() {
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return true
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}
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for i := 0; i < v.NumField(); i++ {
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field := v.Field(i)
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switch field.Kind() {
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case reflect.Ptr:
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field = field.Elem()
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fallthrough
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case reflect.Struct:
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if !isStructZero(field) {
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return false
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}
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default:
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if field.CanInterface() && !isZero(field.Interface()) {
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return false
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}
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}
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}
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return true
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}
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func isArrayValueZero(v reflect.Value) bool {
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if !v.IsValid() || v.Len() == 0 {
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return true
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}
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for i := 0; i < v.Len(); i++ {
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if !isZero(v.Index(i).Interface()) {
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return false
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}
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}
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return true
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}
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func int64ToIntValue(id int64, tp reflect.Type) reflect.Value {
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var v interface{}
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switch tp.Kind() {
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case reflect.Int16:
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v = int16(id)
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case reflect.Int32:
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v = int32(id)
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case reflect.Int:
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v = int(id)
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case reflect.Int64:
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v = id
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case reflect.Uint16:
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v = uint16(id)
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case reflect.Uint32:
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v = uint32(id)
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case reflect.Uint64:
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v = uint64(id)
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case reflect.Uint:
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v = uint(id)
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}
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return reflect.ValueOf(v).Convert(tp)
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}
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func int64ToInt(id int64, tp reflect.Type) interface{} {
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return int64ToIntValue(id, tp).Interface()
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}
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func isPKZero(pk core.PK) bool {
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for _, k := range pk {
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if isZero(k) {
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return true
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}
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}
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return false
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}
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func indexNoCase(s, sep string) int {
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return strings.Index(strings.ToLower(s), strings.ToLower(sep))
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}
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func splitNoCase(s, sep string) []string {
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idx := indexNoCase(s, sep)
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if idx < 0 {
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return []string{s}
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}
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return strings.Split(s, s[idx:idx+len(sep)])
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}
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func splitNNoCase(s, sep string, n int) []string {
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idx := indexNoCase(s, sep)
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if idx < 0 {
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return []string{s}
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}
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return strings.SplitN(s, s[idx:idx+len(sep)], n)
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}
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func makeArray(elem string, count int) []string {
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res := make([]string, count)
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for i := 0; i < count; i++ {
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res[i] = elem
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}
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return res
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}
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func rValue(bean interface{}) reflect.Value {
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return reflect.Indirect(reflect.ValueOf(bean))
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}
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func rType(bean interface{}) reflect.Type {
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sliceValue := reflect.Indirect(reflect.ValueOf(bean))
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//return reflect.TypeOf(sliceValue.Interface())
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return sliceValue.Type()
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}
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func structName(v reflect.Type) string {
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for v.Kind() == reflect.Ptr {
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v = v.Elem()
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}
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return v.Name()
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}
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func col2NewCols(columns ...string) []string {
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newColumns := make([]string, 0, len(columns))
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for _, col := range columns {
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col = strings.Replace(col, "`", "", -1)
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col = strings.Replace(col, `"`, "", -1)
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ccols := strings.Split(col, ",")
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for _, c := range ccols {
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newColumns = append(newColumns, strings.TrimSpace(c))
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}
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}
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return newColumns
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}
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func sliceEq(left, right []string) bool {
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if len(left) != len(right) {
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return false
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}
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sort.Sort(sort.StringSlice(left))
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sort.Sort(sort.StringSlice(right))
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for i := 0; i < len(left); i++ {
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if left[i] != right[i] {
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return false
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}
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}
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return true
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}
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func reflect2value(rawValue *reflect.Value) (str string, err error) {
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aa := reflect.TypeOf((*rawValue).Interface())
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vv := reflect.ValueOf((*rawValue).Interface())
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switch aa.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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str = strconv.FormatInt(vv.Int(), 10)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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str = strconv.FormatUint(vv.Uint(), 10)
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case reflect.Float32, reflect.Float64:
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str = strconv.FormatFloat(vv.Float(), 'f', -1, 64)
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case reflect.String:
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str = vv.String()
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case reflect.Array, reflect.Slice:
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switch aa.Elem().Kind() {
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case reflect.Uint8:
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data := rawValue.Interface().([]byte)
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str = string(data)
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default:
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err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
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}
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// time type
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case reflect.Struct:
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if aa.ConvertibleTo(core.TimeType) {
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str = vv.Convert(core.TimeType).Interface().(time.Time).Format(time.RFC3339Nano)
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} else {
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err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
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}
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case reflect.Bool:
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str = strconv.FormatBool(vv.Bool())
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case reflect.Complex128, reflect.Complex64:
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str = fmt.Sprintf("%v", vv.Complex())
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/* TODO: unsupported types below
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case reflect.Map:
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case reflect.Ptr:
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case reflect.Uintptr:
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case reflect.UnsafePointer:
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case reflect.Chan, reflect.Func, reflect.Interface:
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*/
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default:
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err = fmt.Errorf("Unsupported struct type %v", vv.Type().Name())
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}
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return
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}
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func value2Bytes(rawValue *reflect.Value) (data []byte, err error) {
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var str string
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str, err = reflect2value(rawValue)
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if err != nil {
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return
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}
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data = []byte(str)
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return
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}
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func value2String(rawValue *reflect.Value) (data string, err error) {
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data, err = reflect2value(rawValue)
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if err != nil {
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return
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}
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return
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}
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func rows2Strings(rows *core.Rows) (resultsSlice []map[string]string, err error) {
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fields, err := rows.Columns()
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if err != nil {
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return nil, err
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}
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for rows.Next() {
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result, err := row2mapStr(rows, fields)
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if err != nil {
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return nil, err
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}
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resultsSlice = append(resultsSlice, result)
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}
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return resultsSlice, nil
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}
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func rows2maps(rows *core.Rows) (resultsSlice []map[string][]byte, err error) {
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fields, err := rows.Columns()
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if err != nil {
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return nil, err
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}
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for rows.Next() {
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result, err := row2map(rows, fields)
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if err != nil {
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return nil, err
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}
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resultsSlice = append(resultsSlice, result)
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}
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return resultsSlice, nil
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}
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func row2map(rows *core.Rows, fields []string) (resultsMap map[string][]byte, err error) {
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result := make(map[string][]byte)
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scanResultContainers := make([]interface{}, len(fields))
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for i := 0; i < len(fields); i++ {
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var scanResultContainer interface{}
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scanResultContainers[i] = &scanResultContainer
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}
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if err := rows.Scan(scanResultContainers...); err != nil {
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return nil, err
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}
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for ii, key := range fields {
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rawValue := reflect.Indirect(reflect.ValueOf(scanResultContainers[ii]))
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//if row is null then ignore
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if rawValue.Interface() == nil {
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//fmt.Println("ignore ...", key, rawValue)
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continue
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}
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if data, err := value2Bytes(&rawValue); err == nil {
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result[key] = data
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} else {
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return nil, err // !nashtsai! REVIEW, should return err or just error log?
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}
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}
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return result, nil
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}
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func row2mapStr(rows *core.Rows, fields []string) (resultsMap map[string]string, err error) {
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result := make(map[string]string)
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scanResultContainers := make([]interface{}, len(fields))
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for i := 0; i < len(fields); i++ {
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var scanResultContainer interface{}
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scanResultContainers[i] = &scanResultContainer
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}
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if err := rows.Scan(scanResultContainers...); err != nil {
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return nil, err
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}
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for ii, key := range fields {
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rawValue := reflect.Indirect(reflect.ValueOf(scanResultContainers[ii]))
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//if row is null then ignore
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if rawValue.Interface() == nil {
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//fmt.Println("ignore ...", key, rawValue)
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continue
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}
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if data, err := value2String(&rawValue); err == nil {
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result[key] = data
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} else {
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return nil, err // !nashtsai! REVIEW, should return err or just error log?
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}
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}
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return result, nil
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}
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func txQuery2(tx *core.Tx, sqlStr string, params ...interface{}) ([]map[string]string, error) {
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rows, err := tx.Query(sqlStr, params...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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return rows2Strings(rows)
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}
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func query2(db *core.DB, sqlStr string, params ...interface{}) ([]map[string]string, error) {
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rows, err := db.Query(sqlStr, params...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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return rows2Strings(rows)
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}
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func setColumnInt(bean interface{}, col *core.Column, t int64) {
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v, err := col.ValueOf(bean)
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if err != nil {
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return
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}
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if v.CanSet() {
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switch v.Type().Kind() {
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case reflect.Int, reflect.Int64, reflect.Int32:
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v.SetInt(t)
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case reflect.Uint, reflect.Uint64, reflect.Uint32:
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v.SetUint(uint64(t))
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}
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}
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}
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func setColumnTime(bean interface{}, col *core.Column, t time.Time) {
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v, err := col.ValueOf(bean)
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if err != nil {
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return
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}
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if v.CanSet() {
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switch v.Type().Kind() {
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case reflect.Struct:
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v.Set(reflect.ValueOf(t).Convert(v.Type()))
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case reflect.Int, reflect.Int64, reflect.Int32:
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v.SetInt(t.Unix())
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case reflect.Uint, reflect.Uint64, reflect.Uint32:
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v.SetUint(uint64(t.Unix()))
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}
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}
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}
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func genCols(table *core.Table, session *Session, bean interface{}, useCol bool, includeQuote bool) ([]string, []interface{}, error) {
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colNames := make([]string, 0, len(table.ColumnsSeq()))
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args := make([]interface{}, 0, len(table.ColumnsSeq()))
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for _, col := range table.Columns() {
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if useCol && !col.IsVersion && !col.IsCreated && !col.IsUpdated {
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if _, ok := getFlagForColumn(session.Statement.columnMap, col); !ok {
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continue
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}
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}
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if col.MapType == core.ONLYFROMDB {
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continue
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}
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fieldValuePtr, err := col.ValueOf(bean)
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if err != nil {
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return nil, nil, err
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}
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fieldValue := *fieldValuePtr
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if col.IsAutoIncrement {
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switch fieldValue.Type().Kind() {
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case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int, reflect.Int64:
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if fieldValue.Int() == 0 {
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continue
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}
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case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint, reflect.Uint64:
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if fieldValue.Uint() == 0 {
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continue
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}
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case reflect.String:
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if len(fieldValue.String()) == 0 {
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continue
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}
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}
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}
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if col.IsDeleted {
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continue
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}
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if session.Statement.ColumnStr != "" {
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if _, ok := getFlagForColumn(session.Statement.columnMap, col); !ok {
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continue
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}
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}
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if session.Statement.OmitStr != "" {
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if _, ok := getFlagForColumn(session.Statement.columnMap, col); ok {
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continue
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}
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}
|
|
|
|
// !evalphobia! set fieldValue as nil when column is nullable and zero-value
|
|
if _, ok := getFlagForColumn(session.Statement.nullableMap, col); ok {
|
|
if col.Nullable && isZero(fieldValue.Interface()) {
|
|
var nilValue *int
|
|
fieldValue = reflect.ValueOf(nilValue)
|
|
}
|
|
}
|
|
|
|
if (col.IsCreated || col.IsUpdated) && session.Statement.UseAutoTime /*&& isZero(fieldValue.Interface())*/ {
|
|
// if time is non-empty, then set to auto time
|
|
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)
|
|
} else {
|
|
arg, err := session.value2Interface(col, fieldValue)
|
|
if err != nil {
|
|
return colNames, args, err
|
|
}
|
|
args = append(args, arg)
|
|
}
|
|
|
|
if includeQuote {
|
|
colNames = append(colNames, session.Engine.Quote(col.Name)+" = ?")
|
|
} else {
|
|
colNames = append(colNames, col.Name)
|
|
}
|
|
}
|
|
return colNames, args, nil
|
|
}
|
|
|
|
func indexName(tableName, idxName string) string {
|
|
return fmt.Sprintf("IDX_%v_%v", tableName, idxName)
|
|
}
|
|
|
|
func getFlagForColumn(m map[string]bool, col *core.Column) (val bool, has bool) {
|
|
if len(m) == 0 {
|
|
return false, false
|
|
}
|
|
|
|
n := len(col.Name)
|
|
|
|
for mk := range m {
|
|
if len(mk) != n {
|
|
continue
|
|
}
|
|
if strings.EqualFold(mk, col.Name) {
|
|
return m[mk], true
|
|
}
|
|
}
|
|
|
|
return false, false
|
|
}
|