有这样的设计模式吗？ 怎么称呼它？

Question

I have such design:

public interface MyInterface {
    public abstract List<Sth> getSth();
}

public class MyConcreteImplementation implements MyInterface {
    private ConcreteSth mSth = new ConcreteSth();

    public List<Sth> getSth(){
        return mSth.getSth(additionalParams); 
    }
}

Purpose of code above is to provide unified method to be called from other classes.

Can this be called a pattern? If so how to name it?

Answer 1

It looks to me like an Adapter . It adapts ConcreteSth to MyInterface .

Anyway, if it does the work you expect from it, you should be asking about whether it's a pattern only out of curiousity.

Answer 2

You are just following basic object oriented design here . This looks like simple Composition to me and if you are really keen on a design pattern I could stretch it to being a form of delegate .

Answer 3

Adapter

Purpose of code above is to provide unified method to be called from other classes.

That's really sound like Adapter. You want to have a certain class adapted to your interface. The interface here is MyInterface and the adaptee is ConcreteSth .

Answer 4

我将其称为适配器：它在现有接口（即ConcreteSth ）周围包装了另一个方法（ MyInterface.getSth ），而没有更改功能。

Answer 5

Factory method?

The essence of the Factory method Pattern is to "Define an interface for creating an object, but let the subclasses decide which class to instantiate. The Factory method lets a class defer instantiation to subclasses."

http://en.wikipedia.org/wiki/Factory_method_pattern