Control Flow Pointcut Example

Spring AOP Control Flow Pointcut is Similar to AspectJ pointcut, but less powerful. It matches the current call stack. It can be implemented using org.springframework.aop.support.ControlFlowPointcut

SimpleClass.java

package roseindia.net.coltrolFlowpointcut;

public class SimpleClass {
	public void sayHi() {
		System.out.println("Hello Friend");
	}
}

TestAdvice.java

package roseindia.net.coltrolFlowpointcut;

import java.lang.reflect.Method;

import org.aopalliance.intercept.MethodInterceptor;
import org.springframework.aop.MethodBeforeAdvice;

public class TestAdvice implements MethodBeforeAdvice {

	@Override
	public void before(Method method, Object[] boObjects, Object object)
			throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("Calling before " + method);
	}

}

TestControlFlow.java

package roseindia.net.coltrolFlowpointcut;

import org.aopalliance.aop.Advice;
import org.springframework.aop.Advisor;
import org.springframework.aop.ClassFilter;
import org.springframework.aop.MethodMatcher;
import org.springframework.aop.Pointcut;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.ControlFlowPointcut;
import org.springframework.aop.support.DefaultPointcutAdvisor;

public class TestControlFlow {
	public void test() {
		SimpleClass target = new SimpleClass();
		Pointcut pointcut = new ControlFlowPointcut(TestControlFlow.class,
				"controlFlowTest");
		Advice advice = new TestAdvice();
		ProxyFactory proxyFactory = new ProxyFactory();

		Advisor advisor = new DefaultPointcutAdvisor(pointcut, advice);
		proxyFactory.addAdvisor(advisor);
		proxyFactory.setTarget(target);
		SimpleClass simpleProxy = (SimpleClass) proxyFactory.getProxy();
		System.out.println("Calling Normally");
		simpleProxy.sayHi();
		System.out.println("Calling in ControlFlow");
		controlFlowTest(simpleProxy);
	}

	public void controlFlowTest(SimpleClass simpleClass) {
		simpleClass.sayHi();
	}

}

MainClaz.java

package roseindia.net.coltrolFlowpointcut;

public class MainClaz {
	public static void main(String[] args) {
		TestControlFlow testControlFlow = new TestControlFlow();
		testControlFlow.test();
	}
}

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