golang mapper 数据深拷贝
2022-10-27
deep copy and automica mapping
Mapper
golang 数据深拷贝的类库,支持数据自动映射。 map to struct, struct to map, struct to struct.
Install
go get -u github.com/rentiansheng/mapper
Getting Started
package main
import (
"context"
"fmt"
"github.com/rentiansheng/mapper"
)
type testCopyStructInline struct {
A string
b string
}
type testCopyStructSrc struct {
Int int
AliasCopy string `json:"alias_copy"`
privateString string
Strings []string
testCopyStructInline
}
type testCopyStructDst struct {
Int int
Copy string `json:"alias_copy"`
privateString string
Strings []string
testCopyStructInline
}
func main() {
src := testCopyStructSrc{
Int: 100,
AliasCopy: "alias copy",
privateString: "private",
Strings: []string{"item", "item"},
testCopyStructInline: testCopyStructInline{
A: "inline a",
b: "inline b private",
},
}
dst := testCopyStructDst{}
err := mapper.AllMapper(context.TODO(), src, &dst)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("struct.Int field ", src.Int == dst.Int)
fmt.Println("struct.AliasCopy field ", src.AliasCopy == dst.Copy)
fmt.Println("struct.privateString field ", src.privateString == dst.privateString)
fmt.Println("struct.Strings field ", len(src.Strings) == len(dst.Strings))
fmt.Println("struct.testCopyStructInline.A field ", len(src.A) == len(dst.A))
fmt.Println("struct.testCopyStructInline.B field ", len(src.b) == len(dst.b))
// test deep copy
src.Strings[0] = "change item"
fmt.Println("struct.Strings deep copy test ", src.Strings[0] != dst.Strings[0])
}
Features
- 支持struct私有字段自动映射
- 支持slice 自动映射
- 支持按照字段名自动映射
- 支持按照tag 自动映射
- 支持struct 到map 自动映射
- 支持map 到 struct 自动映射
- 支持[]byte to string
- 数据类型自动识别
- 支持 数据 to interface 自动映射
- 实现[]*Type to []Type
- 实现[]Type to []*Type
- 使用struct tag 别名拷贝
json:"aa,copy=bb"