Source Code : Composable Pointcut Example

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Composable Pointcut Example

/*
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"));
        }

    }
}
           
       

Thank with us