mirror of
https://github.com/astaxie/beego.git
synced 2024-11-22 22:30:54 +00:00
453 lines
10 KiB
Go
453 lines
10 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package orm
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
)
|
|
|
|
var errSkipField = errors.New("skip field")
|
|
|
|
// field info collection
|
|
type fields struct {
|
|
pk *fieldInfo
|
|
columns map[string]*fieldInfo
|
|
fields map[string]*fieldInfo
|
|
fieldsLow map[string]*fieldInfo
|
|
fieldsByType map[int][]*fieldInfo
|
|
fieldsRel []*fieldInfo
|
|
fieldsReverse []*fieldInfo
|
|
fieldsDB []*fieldInfo
|
|
rels []*fieldInfo
|
|
orders []string
|
|
dbcols []string
|
|
}
|
|
|
|
// add field info
|
|
func (f *fields) Add(fi *fieldInfo) (added bool) {
|
|
if f.fields[fi.name] == nil && f.columns[fi.column] == nil {
|
|
f.columns[fi.column] = fi
|
|
f.fields[fi.name] = fi
|
|
f.fieldsLow[strings.ToLower(fi.name)] = fi
|
|
} else {
|
|
return
|
|
}
|
|
if _, ok := f.fieldsByType[fi.fieldType]; ok == false {
|
|
f.fieldsByType[fi.fieldType] = make([]*fieldInfo, 0)
|
|
}
|
|
f.fieldsByType[fi.fieldType] = append(f.fieldsByType[fi.fieldType], fi)
|
|
f.orders = append(f.orders, fi.column)
|
|
if fi.dbcol {
|
|
f.dbcols = append(f.dbcols, fi.column)
|
|
f.fieldsDB = append(f.fieldsDB, fi)
|
|
}
|
|
if fi.rel {
|
|
f.fieldsRel = append(f.fieldsRel, fi)
|
|
}
|
|
if fi.reverse {
|
|
f.fieldsReverse = append(f.fieldsReverse, fi)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// get field info by name
|
|
func (f *fields) GetByName(name string) *fieldInfo {
|
|
return f.fields[name]
|
|
}
|
|
|
|
// get field info by column name
|
|
func (f *fields) GetByColumn(column string) *fieldInfo {
|
|
return f.columns[column]
|
|
}
|
|
|
|
// get field info by string, name is prior
|
|
func (f *fields) GetByAny(name string) (*fieldInfo, bool) {
|
|
if fi, ok := f.fields[name]; ok {
|
|
return fi, ok
|
|
}
|
|
if fi, ok := f.fieldsLow[strings.ToLower(name)]; ok {
|
|
return fi, ok
|
|
}
|
|
if fi, ok := f.columns[name]; ok {
|
|
return fi, ok
|
|
}
|
|
return nil, false
|
|
}
|
|
|
|
// create new field info collection
|
|
func newFields() *fields {
|
|
f := new(fields)
|
|
f.fields = make(map[string]*fieldInfo)
|
|
f.fieldsLow = make(map[string]*fieldInfo)
|
|
f.columns = make(map[string]*fieldInfo)
|
|
f.fieldsByType = make(map[int][]*fieldInfo)
|
|
return f
|
|
}
|
|
|
|
// single field info
|
|
type fieldInfo struct {
|
|
mi *modelInfo
|
|
fieldIndex int
|
|
fieldType int
|
|
dbcol bool
|
|
inModel bool
|
|
name string
|
|
fullName string
|
|
column string
|
|
addrValue reflect.Value
|
|
sf reflect.StructField
|
|
auto bool
|
|
pk bool
|
|
null bool
|
|
index bool
|
|
unique bool
|
|
colDefault bool
|
|
initial StrTo
|
|
size int
|
|
autoNow bool
|
|
autoNowAdd bool
|
|
rel bool
|
|
reverse bool
|
|
reverseField string
|
|
reverseFieldInfo *fieldInfo
|
|
reverseFieldInfoTwo *fieldInfo
|
|
reverseFieldInfoM2M *fieldInfo
|
|
relTable string
|
|
relThrough string
|
|
relThroughModelInfo *modelInfo
|
|
relModelInfo *modelInfo
|
|
digits int
|
|
decimals int
|
|
isFielder bool
|
|
onDelete string
|
|
}
|
|
|
|
// new field info
|
|
func newFieldInfo(mi *modelInfo, field reflect.Value, sf reflect.StructField) (fi *fieldInfo, err error) {
|
|
var (
|
|
tag string
|
|
tagValue string
|
|
initial StrTo
|
|
fieldType int
|
|
attrs map[string]bool
|
|
tags map[string]string
|
|
addrField reflect.Value
|
|
)
|
|
|
|
fi = new(fieldInfo)
|
|
|
|
addrField = field
|
|
if field.CanAddr() && field.Kind() != reflect.Ptr {
|
|
addrField = field.Addr()
|
|
if _, ok := addrField.Interface().(Fielder); !ok {
|
|
if field.Kind() == reflect.Slice {
|
|
addrField = field
|
|
}
|
|
}
|
|
}
|
|
|
|
parseStructTag(sf.Tag.Get(defaultStructTagName), &attrs, &tags)
|
|
|
|
if _, ok := attrs["-"]; ok {
|
|
return nil, errSkipField
|
|
}
|
|
|
|
digits := tags["digits"]
|
|
decimals := tags["decimals"]
|
|
size := tags["size"]
|
|
onDelete := tags["on_delete"]
|
|
|
|
initial.Clear()
|
|
if v, ok := tags["default"]; ok {
|
|
initial.Set(v)
|
|
}
|
|
|
|
checkType:
|
|
switch f := addrField.Interface().(type) {
|
|
case Fielder:
|
|
fi.isFielder = true
|
|
if field.Kind() == reflect.Ptr {
|
|
err = fmt.Errorf("the model Fielder can not be use ptr")
|
|
goto end
|
|
}
|
|
fieldType = f.FieldType()
|
|
if fieldType&IsRelField > 0 {
|
|
err = fmt.Errorf("unsupport rel type custom field")
|
|
goto end
|
|
}
|
|
default:
|
|
tag = "rel"
|
|
tagValue = tags[tag]
|
|
if tagValue != "" {
|
|
switch tagValue {
|
|
case "fk":
|
|
fieldType = RelForeignKey
|
|
break checkType
|
|
case "one":
|
|
fieldType = RelOneToOne
|
|
break checkType
|
|
case "m2m":
|
|
fieldType = RelManyToMany
|
|
if tv := tags["rel_table"]; tv != "" {
|
|
fi.relTable = tv
|
|
} else if tv := tags["rel_through"]; tv != "" {
|
|
fi.relThrough = tv
|
|
}
|
|
break checkType
|
|
default:
|
|
err = fmt.Errorf("error")
|
|
goto wrongTag
|
|
}
|
|
}
|
|
tag = "reverse"
|
|
tagValue = tags[tag]
|
|
if tagValue != "" {
|
|
switch tagValue {
|
|
case "one":
|
|
fieldType = RelReverseOne
|
|
break checkType
|
|
case "many":
|
|
fieldType = RelReverseMany
|
|
if tv := tags["rel_table"]; tv != "" {
|
|
fi.relTable = tv
|
|
} else if tv := tags["rel_through"]; tv != "" {
|
|
fi.relThrough = tv
|
|
}
|
|
break checkType
|
|
default:
|
|
err = fmt.Errorf("error")
|
|
goto wrongTag
|
|
}
|
|
}
|
|
|
|
fieldType, err = getFieldType(addrField)
|
|
if err != nil {
|
|
goto end
|
|
}
|
|
if fieldType == TypeCharField && tags["type"] == "text" {
|
|
fieldType = TypeTextField
|
|
}
|
|
if fieldType == TypeFloatField && (digits != "" || decimals != "") {
|
|
fieldType = TypeDecimalField
|
|
}
|
|
if fieldType == TypeDateTimeField && tags["type"] == "date" {
|
|
fieldType = TypeDateField
|
|
}
|
|
}
|
|
|
|
switch fieldType {
|
|
case RelForeignKey, RelOneToOne, RelReverseOne:
|
|
if field.Kind() != reflect.Ptr {
|
|
err = fmt.Errorf("rel/reverse:one field must be *%s", field.Type().Name())
|
|
goto end
|
|
}
|
|
case RelManyToMany, RelReverseMany:
|
|
if field.Kind() != reflect.Slice {
|
|
err = fmt.Errorf("rel/reverse:many field must be slice")
|
|
goto end
|
|
} else {
|
|
if field.Type().Elem().Kind() != reflect.Ptr {
|
|
err = fmt.Errorf("rel/reverse:many slice must be []*%s", field.Type().Elem().Name())
|
|
goto end
|
|
}
|
|
}
|
|
}
|
|
|
|
if fieldType&IsFieldType == 0 {
|
|
err = fmt.Errorf("wrong field type")
|
|
goto end
|
|
}
|
|
|
|
fi.fieldType = fieldType
|
|
fi.name = sf.Name
|
|
fi.column = getColumnName(fieldType, addrField, sf, tags["column"])
|
|
fi.addrValue = addrField
|
|
fi.sf = sf
|
|
fi.fullName = mi.fullName + "." + sf.Name
|
|
|
|
fi.null = attrs["null"]
|
|
fi.index = attrs["index"]
|
|
fi.auto = attrs["auto"]
|
|
fi.pk = attrs["pk"]
|
|
fi.unique = attrs["unique"]
|
|
|
|
// Mark object property if there is attribute "default" in the orm configuration
|
|
if _, ok := tags["default"]; ok {
|
|
fi.colDefault = true
|
|
}
|
|
|
|
switch fieldType {
|
|
case RelManyToMany, RelReverseMany, RelReverseOne:
|
|
fi.null = false
|
|
fi.index = false
|
|
fi.auto = false
|
|
fi.pk = false
|
|
fi.unique = false
|
|
default:
|
|
fi.dbcol = true
|
|
}
|
|
|
|
switch fieldType {
|
|
case RelForeignKey, RelOneToOne, RelManyToMany:
|
|
fi.rel = true
|
|
if fieldType == RelOneToOne {
|
|
fi.unique = true
|
|
}
|
|
case RelReverseMany, RelReverseOne:
|
|
fi.reverse = true
|
|
}
|
|
|
|
if fi.rel && fi.dbcol {
|
|
switch onDelete {
|
|
case odCascade, odDoNothing:
|
|
case odSetDefault:
|
|
if initial.Exist() == false {
|
|
err = errors.New("on_delete: set_default need set field a default value")
|
|
goto end
|
|
}
|
|
case odSetNULL:
|
|
if fi.null == false {
|
|
err = errors.New("on_delete: set_null need set field null")
|
|
goto end
|
|
}
|
|
default:
|
|
if onDelete == "" {
|
|
onDelete = odCascade
|
|
} else {
|
|
err = fmt.Errorf("on_delete value expected choice in `cascade,set_null,set_default,do_nothing`, unknown `%s`", onDelete)
|
|
goto end
|
|
}
|
|
}
|
|
|
|
fi.onDelete = onDelete
|
|
}
|
|
|
|
switch fieldType {
|
|
case TypeBooleanField:
|
|
case TypeCharField:
|
|
if size != "" {
|
|
v, e := StrTo(size).Int32()
|
|
if e != nil {
|
|
err = fmt.Errorf("wrong size value `%s`", size)
|
|
} else {
|
|
fi.size = int(v)
|
|
}
|
|
} else {
|
|
fi.size = 255
|
|
}
|
|
case TypeTextField:
|
|
fi.index = false
|
|
fi.unique = false
|
|
case TypeDateField, TypeDateTimeField:
|
|
if attrs["auto_now"] {
|
|
fi.autoNow = true
|
|
} else if attrs["auto_now_add"] {
|
|
fi.autoNowAdd = true
|
|
}
|
|
case TypeFloatField:
|
|
case TypeDecimalField:
|
|
d1 := digits
|
|
d2 := decimals
|
|
v1, er1 := StrTo(d1).Int8()
|
|
v2, er2 := StrTo(d2).Int8()
|
|
if er1 != nil || er2 != nil {
|
|
err = fmt.Errorf("wrong digits/decimals value %s/%s", d2, d1)
|
|
goto end
|
|
}
|
|
fi.digits = int(v1)
|
|
fi.decimals = int(v2)
|
|
default:
|
|
switch {
|
|
case fieldType&IsIntegerField > 0:
|
|
case fieldType&IsRelField > 0:
|
|
}
|
|
}
|
|
|
|
if fieldType&IsIntegerField == 0 {
|
|
if fi.auto {
|
|
err = fmt.Errorf("non-integer type cannot set auto")
|
|
goto end
|
|
}
|
|
}
|
|
|
|
if fi.auto || fi.pk {
|
|
if fi.auto {
|
|
|
|
switch addrField.Elem().Kind() {
|
|
case reflect.Int, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint32, reflect.Uint64:
|
|
default:
|
|
err = fmt.Errorf("auto primary key only support int, int32, int64, uint, uint32, uint64 but found `%s`", addrField.Elem().Kind())
|
|
goto end
|
|
}
|
|
|
|
fi.pk = true
|
|
}
|
|
fi.null = false
|
|
fi.index = false
|
|
fi.unique = false
|
|
}
|
|
|
|
if fi.unique {
|
|
fi.index = false
|
|
}
|
|
|
|
if fi.auto || fi.pk || fi.unique || fieldType == TypeDateField || fieldType == TypeDateTimeField {
|
|
// can not set default
|
|
initial.Clear()
|
|
}
|
|
|
|
if initial.Exist() {
|
|
v := initial
|
|
switch fieldType {
|
|
case TypeBooleanField:
|
|
_, err = v.Bool()
|
|
case TypeFloatField, TypeDecimalField:
|
|
_, err = v.Float64()
|
|
case TypeBitField:
|
|
_, err = v.Int8()
|
|
case TypeSmallIntegerField:
|
|
_, err = v.Int16()
|
|
case TypeIntegerField:
|
|
_, err = v.Int32()
|
|
case TypeBigIntegerField:
|
|
_, err = v.Int64()
|
|
case TypePositiveBitField:
|
|
_, err = v.Uint8()
|
|
case TypePositiveSmallIntegerField:
|
|
_, err = v.Uint16()
|
|
case TypePositiveIntegerField:
|
|
_, err = v.Uint32()
|
|
case TypePositiveBigIntegerField:
|
|
_, err = v.Uint64()
|
|
}
|
|
if err != nil {
|
|
tag, tagValue = "default", tags["default"]
|
|
goto wrongTag
|
|
}
|
|
}
|
|
|
|
fi.initial = initial
|
|
end:
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return
|
|
wrongTag:
|
|
return nil, fmt.Errorf("wrong tag format: `%s:\"%s\"`, %s", tag, tagValue, err)
|
|
}
|