Spring AOP question

[Ra Carter]

I am on the first chapter of Spring in Action and I am trying to learn the AOP part now. What I am trying to do is make marge speak after homer eats, but it is not doing that now. The contents of my simpsons.xml file is below, see any problems?

<?xml version="1.0" encoding="UTF-8"?>
 
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans <a href="http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" target="_blank" rel="nofollow">http://www.springframework.org/schema/beans/spring-beans-2.0.xsd</a>
   <a href="http://www.springframework.org/schema/aop" target="_blank" rel="nofollow">http://www.springframework.org/schema/aop</a> <a href="http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">" target="_blank" rel="nofollow">http://www.springframework.org/schema/aop/spring-aop-2.0.xsd"></a>
    
    <bean id="homer" class="com.acme.Homer" />
    
    <bean id="marge" class="com.acme.Marge">
        <property name="friend" ref="homer" />
    </bean>
    
    <aop:config>
        <aop:aspect ref="marge">
            <aop :p ointcut id="eatPointcut" expression="execution(* *.eat(..))"/>
            <aop:after-returning method="speak" pointcut-ref="eatPointcut"/>
        </aop:aspect>
    </aop:config>
    
</beans>

Both marge and homer inherit from a Simpsons abstract class which defines these two methods

public abstract void eat(Object object);
 
public abstract void speak();

[ December 22, 2007: Message edited by: Ra Carter ]

[Aditya Jha]

Hi,

If you could tell us what kind of problem you're facing, may be we will be able to help you.

In particular, you may share if it produces a compile-time error, a run-time stack-trace, or if the advice is simply not getting executed at all without any apparent errors.

Just a suggestion - I usually define my pointcut(s) by using <aop: pointcut> element(s) directly inside <aop:config> element (In your example, the <aop: pointcut> element is inside the <aop:aspect> element). Later on, I declare <aop:aspect> elements inside the same <aop:config> element to define the aspects. This works well for me!

Regards,

- Aditya Jha
[ January 01, 2008: Message edited by: Aditya N Jha ]