Decorator Pattern - 1

1. 데코레이터 패턴을 이해하기 위한 예제 코드

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2. Component

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public interface Component {

    String operation();
}

 

 

3. RealComponent

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@Slf4j
public class RealComponent implements Component{


    @Override
    public String operation() {
        log.info("Real Component 실행");
        return "data";
    }
}

 

4. Client

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import lombok.extern.slf4j.Slf4j;

@Slf4j
public class DecoratorPatternClient {

    private Component component;

    public DecoratorPatternClient(Component component) {
        this.component = component;
    }

    public void execute(){
        String result = component.operation();
        log.info("result={}", result);
    }

}

 

 

5. Test

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import hello.proxy.pureproxy.decorator.code.Component;
import hello.proxy.pureproxy.decorator.code.DecoratorPatternClient;
import hello.proxy.pureproxy.decorator.code.RealComponent;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;

@Slf4j
public class DecoratorPatternTest {

    @Test
    void noDecorator(){
        Component realComponent = new RealComponent();

        DecoratorPatternClient client = new DecoratorPatternClient(realComponent);

        client.execute();
    }

}

 

 

6. GitHub : 211228 DecoratorePattern1

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GitHub - bsh6463/Spring_Advanced_2