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spring core advanced : strategy pattern

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haerong22
2021-11-12 01:59:01 +09:00
parent 24836b84a8
commit 61721c7844
8 changed files with 219 additions and 0 deletions
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99
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/ContextV1Test.java Normal file
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package com.example.advanced.trace.strategy;
import com.example.advanced.trace.strategy.code.strategy.ContextV1;
import com.example.advanced.trace.strategy.code.strategy.Strategy;
import com.example.advanced.trace.strategy.code.strategy.StrategyLogic1;
import com.example.advanced.trace.strategy.code.strategy.StrategyLogic2;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
@Slf4j
public class ContextV1Test {
@Test
void strategyV0() {
logic1();
logic2();
}
private void logic1() {
long startTime = System.currentTimeMillis();
// 비즈니스 로직 실행
log.info("비즈니스 로직 실행1");
long endTime = System.currentTimeMillis();
long resultTime = endTime - startTime;
log.info("resultTime={}", resultTime);
}
private void logic2() {
long startTime = System.currentTimeMillis();
// 비즈니스 로직 실행
log.info("비즈니스 로직 실행2");
long endTime = System.currentTimeMillis();
long resultTime = endTime - startTime;
log.info("resultTime={}", resultTime);
}
/**
* 전략 패턴 사용
*/
@Test
void strategyV1() {
ContextV1 contextV1 = new ContextV1(new StrategyLogic1());
contextV1.execute();
ContextV1 contextV2 = new ContextV1(new StrategyLogic2());
contextV2.execute();
}
@Test
void strategyV2() {
Strategy strategyLogic1 = new Strategy() {
@Override
public void call() {
log.info("비즈니스 로직1 실행");
}
};
ContextV1 contextV1 = new ContextV1(strategyLogic1);
log.info("strategyLogic1={}", strategyLogic1.getClass());
contextV1.execute();
Strategy strategyLogic2 = new Strategy() {
@Override
public void call() {
log.info("비즈니스 로직2 실행");
}
};
ContextV1 contextV2 = new ContextV1(strategyLogic2);
log.info("strategyLogic2={}", strategyLogic2.getClass());
contextV2.execute();
}
@Test
void strategyV3() {
ContextV1 contextV1 = new ContextV1(new Strategy() {
@Override
public void call() {
log.info("비즈니스 로직1 실행");
}
});
contextV1.execute();
ContextV1 contextV2 = new ContextV1(new Strategy() {
@Override
public void call() {
log.info("비즈니스 로직2 실행");
}
});
contextV2.execute();
}
@Test
void strategyV4() {
ContextV1 contextV1 = new ContextV1(() -> log.info("비즈니스 로직1 실행"));
contextV1.execute();
ContextV1 contextV2 = new ContextV1(() -> log.info("비즈니스 로직2 실행"));
contextV2.execute();
}
}

48
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/ContextV2Test.java Normal file
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package com.example.advanced.trace.strategy;
import com.example.advanced.trace.strategy.code.strategy.ContextV2;
import com.example.advanced.trace.strategy.code.strategy.Strategy;
import com.example.advanced.trace.strategy.code.strategy.StrategyLogic1;
import com.example.advanced.trace.strategy.code.strategy.StrategyLogic2;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import javax.naming.Context;
@Slf4j
public class ContextV2Test {
/**
* 전략 패턴 적용
*/
@Test
void strategyV1() {
ContextV2 context = new ContextV2();
context.execute(new StrategyLogic1());
context.execute(new StrategyLogic2());
}
@Test
void strategyV2() {
ContextV2 context = new ContextV2();
context.execute(new Strategy() {
@Override
public void call() {
log.info("비즈니스 로직1 실행");
}
});
context.execute(new Strategy() {
@Override
public void call() {
log.info("비즈니스 로직2 실행");
}
});
}
@Test
void strategyV3() {
ContextV2 context = new ContextV2();
context.execute(() -> log.info("비즈니스 로직1 실행"));
context.execute(() -> log.info("비즈니스 로직2 실행"));
}
}

25
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/code/strategy/ContextV1.java Normal file
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package com.example.advanced.trace.strategy.code.strategy;
import lombok.extern.slf4j.Slf4j;
/**
* 필드에 전략을 보관하는 방식
*/
@Slf4j
public class ContextV1 {
private final Strategy strategy;
public ContextV1(Strategy strategy) {
this.strategy = strategy;
}
public void execute() {
long startTime = System.currentTimeMillis();
// 비즈니스 로직 실행
strategy.call();
long endTime = System.currentTimeMillis();
long resultTime = endTime - startTime;
log.info("resultTime={}", resultTime);
}
}

19
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/code/strategy/ContextV2.java Normal file
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package com.example.advanced.trace.strategy.code.strategy;
import lombok.extern.slf4j.Slf4j;
/**
* 전략을 파라미터로 전달 받는 방식
*/
@Slf4j
public class ContextV2 {
public void execute(Strategy strategy) {
long startTime = System.currentTimeMillis();
// 비즈니스 로직 실행
strategy.call();
long endTime = System.currentTimeMillis();
long resultTime = endTime - startTime;
log.info("resultTime={}", resultTime);
}
}

5
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/code/strategy/Strategy.java Normal file
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package com.example.advanced.trace.strategy.code.strategy;
public interface Strategy {
void call();
}

11
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/code/strategy/StrategyLogic1.java Normal file
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@@ -0,0 +1,11 @@
package com.example.advanced.trace.strategy.code.strategy;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class StrategyLogic1 implements Strategy{
@Override
public void call() {
log.info("비즈니스 로직1 실행");
}
}

11
spring-core/advanced/src/test/java/com/example/advanced/trace/strategy/code/strategy/StrategyLogic2.java Normal file
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package com.example.advanced.trace.strategy.code.strategy;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class StrategyLogic2 implements Strategy{
@Override
public void call() {
log.info("비즈니스 로직2 실행");
}
}

1
spring-core/advanced/src/test/java/com/example/advanced/trace/template/TemplateMethodTest.java
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@@ -32,6 +32,7 @@ public class TemplateMethodTest {
long resultTime = endTime - startTime;
log.info("resultTime={}", resultTime);
}
/**
* 템플릿 메서드 패턴 적용
*/