forked from Shiloh/githaven
111 lines
2.8 KiB
Go
Vendored
111 lines
2.8 KiB
Go
Vendored
// Copyright 2019 The Xorm Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package schemas
|
|
|
|
import (
|
|
"errors"
|
|
"reflect"
|
|
"strconv"
|
|
"time"
|
|
)
|
|
|
|
// enumerates all database mapping way
|
|
const (
|
|
TWOSIDES = iota + 1
|
|
ONLYTODB
|
|
ONLYFROMDB
|
|
)
|
|
|
|
// Column defines database column
|
|
type Column struct {
|
|
Name string
|
|
TableName string
|
|
FieldName string // Available only when parsed from a struct
|
|
FieldIndex []int // Available only when parsed from a struct
|
|
SQLType SQLType
|
|
IsJSON bool
|
|
Length int
|
|
Length2 int
|
|
Nullable bool
|
|
Default string
|
|
Indexes map[string]int
|
|
IsPrimaryKey bool
|
|
IsAutoIncrement bool
|
|
MapType int
|
|
IsCreated bool
|
|
IsUpdated bool
|
|
IsDeleted bool
|
|
IsCascade bool
|
|
IsVersion bool
|
|
DefaultIsEmpty bool // false means column has no default set, but not default value is empty
|
|
EnumOptions map[string]int
|
|
SetOptions map[string]int
|
|
DisableTimeZone bool
|
|
TimeZone *time.Location // column specified time zone
|
|
Comment string
|
|
}
|
|
|
|
// NewColumn creates a new column
|
|
func NewColumn(name, fieldName string, sqlType SQLType, len1, len2 int, nullable bool) *Column {
|
|
return &Column{
|
|
Name: name,
|
|
IsJSON: sqlType.IsJson(),
|
|
TableName: "",
|
|
FieldName: fieldName,
|
|
SQLType: sqlType,
|
|
Length: len1,
|
|
Length2: len2,
|
|
Nullable: nullable,
|
|
Default: "",
|
|
Indexes: make(map[string]int),
|
|
IsPrimaryKey: false,
|
|
IsAutoIncrement: false,
|
|
MapType: TWOSIDES,
|
|
IsCreated: false,
|
|
IsUpdated: false,
|
|
IsDeleted: false,
|
|
IsCascade: false,
|
|
IsVersion: false,
|
|
DefaultIsEmpty: true, // default should be no default
|
|
EnumOptions: make(map[string]int),
|
|
Comment: "",
|
|
}
|
|
}
|
|
|
|
// ValueOf returns column's filed of struct's value
|
|
func (col *Column) ValueOf(bean interface{}) (*reflect.Value, error) {
|
|
dataStruct := reflect.Indirect(reflect.ValueOf(bean))
|
|
return col.ValueOfV(&dataStruct)
|
|
}
|
|
|
|
// ValueOfV returns column's filed of struct's value accept reflevt value
|
|
func (col *Column) ValueOfV(dataStruct *reflect.Value) (*reflect.Value, error) {
|
|
var v = *dataStruct
|
|
for _, i := range col.FieldIndex {
|
|
if v.Kind() == reflect.Ptr {
|
|
if v.IsNil() {
|
|
v.Set(reflect.New(v.Type().Elem()))
|
|
}
|
|
v = v.Elem()
|
|
}
|
|
v = v.FieldByIndex([]int{i})
|
|
}
|
|
return &v, nil
|
|
}
|
|
|
|
// ConvertID converts id content to suitable type according column type
|
|
func (col *Column) ConvertID(sid string) (interface{}, error) {
|
|
if col.SQLType.IsNumeric() {
|
|
n, err := strconv.ParseInt(sid, 10, 64)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return n, nil
|
|
} else if col.SQLType.IsText() {
|
|
return sid, nil
|
|
}
|
|
return nil, errors.New("not supported")
|
|
}
|