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NullPointerException in MethodJoinPointGenerator

created by Sebastien Pennec in JBoss AOP - View the full discussion

Hi!

 

I'm experiencing a strange problem with JBoss AOP, with JBoss 5.1.0 EAP.

 

Here is a part of my aop.xml file, in the bootstrap directory:

 

   <bean name="AspectManager" class="org.jboss.aop.deployers.AspectManagerJDK5">

          .....

      <property name="enableLoadtimeWeaving">true</property>

      <property name="include">org.jacorb.poa,com.myCompany.util.bus.mdb.</property>

          .....

          </bean>

 

In a jar that is in the deploy directory, I have a jboss-aop.xml file that contains:

 

<aop>

  ...

          <interceptor name="jmsOnMessageInterceptor" class="com.myCompany.util.jms.OnMessageInterceptor" />

          <bind pointcut="execution(public void $instanceof{javax.jms.MessageListener}->onMessage(javax.jms.Message))">

    <interceptor-ref name="jmsOnMessageInterceptor" />

          </bind>

</aop>

 

In the same jar, I have a class that implements the org.jboss.aop.advice.Interceptor interface and simply logs something (for the moment).

 

In the server logs, I can see the following lines:

 

12:28:37,817 DEBUG [Instrumentor] trying to transform com.myCompany.util.bus.mdb.BusMDBBean

...

12:28:37,958 DEBUG [JoinpointSimpleClassifier] javassist.CtMethod@3a509631[public onMessage (Ljavax/jms/Message;)V] method execution joinpoint matches pointcut: execution(public void $instanceof{javax.jms.MessageListener}->onMessage(javax.jms.Message))

12:28:38,942 DEBUG [Instrumentor] was com.myCompany.util.bus.mdb.BusMDBBean converted: true

12:28:39,192 ERROR [SuperClassesFirstWeavingStrategy] java.lang.RuntimeException: Error converting class

...

 

And when the onMessage method is called, I see the following exception:

 

Caused by: java.lang.NullPointerException

          at org.jboss.aop.instrument.MethodJoinPointGenerator.<init>(MethodJoinPointGenerator.java:78)

          at org.jboss.aop.GeneratedClassAdvisor$ClassAdvisorStrategy.getJoinPointGenerator(GeneratedClassAdvisor.java:1314)

          at org.jboss.aop.GeneratedClassAdvisor.getJoinPointGenerator(GeneratedClassAdvisor.java:781)

          at org.jboss.aop.GeneratedClassAdvisor.fullWorkFinalizeMethodChain(GeneratedClassAdvisor.java:635)

          at org.jboss.aop.GeneratedClassAdvisor.finalizeMethodChain(GeneratedClassAdvisor.java:599)

          at org.jboss.aop.GeneratedClassAdvisor.finalizeChains(GeneratedClassAdvisor.java:580)

          at org.jboss.aop.ClassAdvisor.createInterceptorChains(ClassAdvisor.java:609)

          at org.jboss.aop.GeneratedClassAdvisor.access$201(GeneratedClassAdvisor.java:65)

          at org.jboss.aop.GeneratedClassAdvisor$ClassAdvisorStrategy.createInterceptorChains(GeneratedClassAdvisor.java:1306)

          at org.jboss.aop.GeneratedClassAdvisor.createInterceptorChains(GeneratedClassAdvisor.java:410)

          at org.jboss.aop.ClassAdvisor$1.run(ClassAdvisor.java:306)

          at java.security.AccessController.doPrivileged(Native Method)

          at org.jboss.aop.ClassAdvisor.attachClass(ClassAdvisor.java:276)

          at org.jboss.aop.AspectManager.initialiseClassAdvisor(AspectManager.java:754)

          at org.jboss.aop.GeneratedClassAdvisor$ClassAdvisorStrategy.initialise(GeneratedClassAdvisor.java:1294)

          at org.jboss.aop.GeneratedClassAdvisor.initialise(GeneratedClassAdvisor.java:146)

          at com.myCompany.util.bus.mdb.BusMDBBean$BusMDBBeanAdvisor.initialise(BusMDBBean$BusMDBBeanAdvisor.java)

          at com.myCompany.util.bus.mdb.BusMDBBean$BusMDBBeanAdvisor.<init>(BusMDBBean$BusMDBBeanAdvisor.java)

          at com.myCompany.util.bus.mdb.BusMDBBean.<clinit>(BusMDBBean.java)

 

Can anybody help me out? Is there a point that I have missed?

 

 

Thanks!

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