diff --git a/ex b/ex
new file mode 100644
index 0000000..b6e6ef9
--- /dev/null
+++ b/ex
@@ -0,0 +1,112 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"reflect"
+
+	"git.loafle.net/prototype/reflection/service"
+)
+
+func main() {
+	var err error
+	r := &Registry{}
+	// if err = r.RegisterType(&Dao{}); nil != err {
+	// 	log.Printf("%v \n", err)
+	// }
+	if err = r.RegisterType(reflect.TypeOf((*service.MemberService)(nil))); nil != err {
+		log.Printf("%v \n", err)
+	}
+	// if err = r.RegisterType(&prsu.UserService{}); nil != err {
+	// 	log.Printf("%v \n", err)
+	// }
+	// if err = r.RegisterType(prsu.UserService{}); nil != err {
+	// 	log.Printf("%v \n", err)
+	// }
+	// if err = r.RegisterFactory(NewService); nil != err {
+	// 	log.Printf("%v \n", err)
+	// }
+
+	// if err = r.RegisterType(&Controller{}); nil != err {
+	// 	log.Printf("%v \n", err)
+	// }
+
+}
+
+func NewService() *Service {
+	return &Service{}
+}
+
+type Registry struct {
+}
+
+func (r *Registry) RegisterType(t reflect.Type) error {
+	// t := reflect.TypeOf(s)
+	if nil == t {
+		return errors.New("can't provide an untyped nil")
+	}
+
+	if !IsType(t, reflect.Struct) {
+		return fmt.Errorf("must provide struct, got %v", t)
+	}
+
+	name, rt := GetTypeName(t)
+	log.Printf("The name of Type: %s", name)
+
+	fN := rt.NumField()
+	for i := 0; i < fN; i++ {
+		f := rt.Field(i)
+		log.Printf("The PkgPath: %s", f.PkgPath)
+		log.Printf("The field[%s] of [%s] is pointer :%v", f.Name, name, f.Type.Kind() == reflect.Ptr)
+		log.Printf("The tag of [%s.%s]: %s", name, f.Name, f.Tag.Get("annotation"))
+	}
+
+	return nil
+}
+
+// func (r *Registry) RegisterFactory(s interface{}) error {
+// 	t := reflect.TypeOf(s)
+// 	if nil == t {
+// 		return errors.New("can't provide an untyped nil")
+// 	}
+
+// 	if !IsType(t, reflect.Func) {
+// 		return fmt.Errorf("must provide constructor function, got %v (type %v)", s, t)
+// 	}
+
+// 	log.Printf("The name of Type: %s", GetTypeName(t))
+// 	log.Printf("The name of Type: %v", t.IsVariadic())
+// 	log.Printf("The name of Type: %s", t.PkgPath())
+// 	log.Printf("The name of Type: %s", GetTypeName(t.Out(0)))
+
+// 	return nil
+// }
+
+type Controller struct {
+	service       *Service               `annotation:"transiant:singleton"`
+	MemberService *service.MemberService `annotation:"transiant:singleton"`
+}
+
+type Service struct {
+	Dao *Dao `annotation:"transiant:singleton"`
+}
+
+type Dao struct {
+}
+
+func IsType(t reflect.Type, kind reflect.Kind) bool {
+	if reflect.Ptr == t.Kind() {
+		return IsType(t.Elem(), kind)
+	}
+
+	return kind == t.Kind()
+}
+
+func GetTypeName(t reflect.Type) (string, reflect.Type) {
+	if reflect.Ptr == t.Kind() {
+		return GetTypeName(t.Elem())
+	}
+
+	return fmt.Sprintf("%s/%s", t.PkgPath(), t.Name()), t
+}