java code for Composable Pointcut

/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/

//////////////////////////////////////////////////////////////////////////////////
import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class SimpleBeforeAdvice implements MethodBeforeAdvice {


public void before(Method method, Object[] args, Object target)
throws Throwable {
System.out.println("Before method: " + method);
}

}


//////////////////////////////////////////////////////////////////////////////////
public class SampleBean {

public String getName() {
return "Rob Harrop";
}

public void setName(String name) {

}

public int getAge() {
return 100;
}
}



//////////////////////////////////////////////////////////////////////////////////
import java.lang.reflect.Method;

import org.springframework.aop.Advisor;
import org.springframework.aop.ClassFilter;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.ComposablePointcut;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.aop.support.StaticMethodMatcher;

public class ComposablePointcutExample {

public static void main(String[] args) {
// create target
SampleBean target = new SampleBean();


ComposablePointcut pc = new ComposablePointcut(ClassFilter.TRUE,
new GetterMethodMatcher());

System.out.println("Test 1");
SampleBean proxy = getProxy(pc, target);
testInvoke(proxy);

System.out.println("Test 2");
pc.union(new SetterMethodMatcher());
proxy = getProxy(pc, target);
testInvoke(proxy);

System.out.println("Test 3");
pc.intersection(new GetAgeMethodMatcher());
proxy = getProxy(pc, target);
testInvoke(proxy);

}

private static SampleBean getProxy(ComposablePointcut pc, SampleBean target) {
// create the advisor

Advisor advisor = new DefaultPointcutAdvisor(pc,
new SimpleBeforeAdvice());

// create the proxy
ProxyFactory pf = new ProxyFactory();
pf.setTarget(target);
pf.addAdvisor(advisor);

return (SampleBean) pf.getProxy();
}

private static void testInvoke(SampleBean proxy) {
proxy.getAge();
proxy.getName();
proxy.setName("Rob Harrop");
}

private static class GetterMethodMatcher extends StaticMethodMatcher {

public boolean matches(Method method, Class cls) {
return (method.getName().startsWith("get"));
}

}

private static class GetAgeMethodMatcher extends StaticMethodMatcher {
public boolean matches(Method method, Class cls) {
return "getAge".equals(method.getName());
}
}

private static class SetterMethodMatcher extends StaticMethodMatcher {

public boolean matches(Method method, Class cls) {
return (method.getName().startsWith("set"));
}

}
}