Mega Code Archive
Composable Pointcut Example
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/*
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"));
}
}
}
ComposablePointcutExample.zip( 1,482 k)
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