ing

registry/registry.go

@@ -24,6 +24,7 @@ type ComponentRegistry interface {
 	RegisterResource(name string, resource interface{}) error
 
 	GetInstance(t reflect.Type) interface{}
+	GetInstances(ts []reflect.Type) []interface{}
 	GetInstanceByName(name string) interface{}
 	GetInstancesByAnnotationName(n string) []interface{}
 }
@@ -186,6 +187,23 @@ func (cr *defaultComponentRegistry) GetInstanceByName(name string) interface{} {
 	return nil
 }
 
+// GetInstances returns instance of annotated
+// n must be name of registered annotation
+func GetInstances(ts []reflect.Type) []interface{} {
+	return registry.GetInstances(ts)
+}
+func (cr *defaultComponentRegistry) GetInstances(ts []reflect.Type) []interface{} {
+	instances := make([]interface{}, 0)
+
+	for _, t := range ts {
+		if i := cr.GetInstance(t); nil != i {
+			instances = append(instances, i)
+		}
+	}
+
+	return instances
+}
+
 // GetInstancesByAnnotationName returns instance of annotated
 // n must be name of registered annotation
 func GetInstancesByAnnotationName(n string) []interface{} {

registry/registry_test.go

@@ -27,8 +27,13 @@ func TestRegisterType(t *testing.T) {
 	css := GetInstancesByAnnotationName(cdia.ComponentTag)
 	log.Printf("%v", css)
 
-	cs := GetInstance(reflect.TypeOf((*CService)(nil))).(*CService)
+	css2 := GetInstances([]reflect.Type{
+		reflect.TypeOf((*AService)(nil)),
+		reflect.TypeOf((*BService)(nil)),
+	})
+	log.Printf("%v", css2)
 
+	cs := GetInstance(reflect.TypeOf((*CService)(nil))).(*CService)
 	log.Printf("%v", cs)
 
 }