Dynamic Pointcut Example

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


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

    public void foo(int x) {
        System.out.println("Invoked foo() with: "  +x);
    }
    
    public void bar() { 
        System.out.println("Invoked bar()");
    }
}


///////////////////////////////////////////////////////////////////////////////////////
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class SimpleAdvice implements MethodInterceptor {

    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.println(">> Invoking " + invocation.getMethod().getName());
        Object retVal = invocation.proceed();
        System.out.println(">> Done");
        return retVal;
    }

}


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

import org.springframework.aop.ClassFilter;
import org.springframework.aop.support.DynamicMethodMatcherPointcut;

public class SimpleDynamicPointcut extends DynamicMethodMatcherPointcut {

    public boolean matches(Method method, Class cls) {
        System.out.println("Static check for " + method.getName());
        return ("foo".equals(method.getName()));
    }

    public boolean matches(Method method, Class cls, Object[] args) {
        System.out.println("Dynamic check for " + method.getName());

        int x = ((Integer) args[0]).intValue();

        return (x != 100);
    }

    public ClassFilter getClassFilter() {
        return new ClassFilter() {

            public boolean matches(Class cls) {
                return (cls == SampleBean.class);
            }
        };
    }
}
///////////////////////////////////////////////////////////////////////////////////////
import org.springframework.aop.Advisor;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.DefaultPointcutAdvisor;

public class DynamicPointcutExample {

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

        // create advisor
        Advisor advisor = new DefaultPointcutAdvisor(
                new SimpleDynamicPointcut(), new SimpleAdvice());
        
        // create proxy
        ProxyFactory pf = new ProxyFactory();
        pf.setTarget(target);
        pf.addAdvisor(advisor);
        SampleBean proxy = (SampleBean)pf.getProxy();
        
        proxy.foo(1);
        proxy.foo(10);
        proxy.foo(100);
        
        proxy.bar();
        proxy.bar();
        proxy.bar();
    }
}

DynamicPointcutExample.zip( 1,481 k)

1.	Profiling Example
2.	Introduction Config Example
3.	Security Example
4.	Simple After Returning Advice
5.	Simple Before Advice
6.	Simple Throws Advice
7.	Composable Pointcut Example
8.	Control Flow Example
9.	Hello World With Pointcut
10.	Spring Aspect Introduction Example
11.	Static Pointcut Example
12.	Name Pointcut Example
13.	Name Pointcut Using Advisor
14.	Proxy Factory Bean Example
15.	Proxy Perf Test
16.	Regexp Pointcut Example
17.	After Advice Example
18.	AspectJ Example from Pro Spring
19.	Aspect Hello World Example

Dynamic Pointcut Example : Spring Aspect « Spring « Java

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