interceptor metadata issue

[tterm]

Hello,

There is a problem for me with the interceptors (adding some metadata) during an EJB3 method invocation. I thought it is an issue with the serialization framework so had a conversation with Clebert before in this forum: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=89387.

So I will give an abstract. The complete stacktrace and code snippets are given in the serialization forum.

I created an clientside and an serverside interceptor. The clientside interceptor put a string in the SimpleMetaData with the default payload key MARSHALLED and the serverside interceptor should read this data. So if I do this I get allways a ClassCastException (shown in the other forum) with JBoss-4.0.4 and newer but not with JBoss-4.0.3SP1 (That works fine). If I set the payload key to AS_IS then it works fine with the newest version.

I would like to know what I do wrong or understand wrong that I allways get this ClassCastException?

If you need more information, testcases (I added a url where you can find a complete example) ore something please let me know.

Thanks in advance,
Thomas Termin

[clebert.suconic]

Can you provide a code snipped on how you set the String on PayLoad.


Also... a question to EJB3 guys:

is it legal (specwise) to use Payload on interceptors?

If it is, what the semantic of doing so? I mean... we could set any object inside, or only MarshalledValues?


Clebert

[tterm]

The interceptors (org.jboss.aop.advice.Interceptor) are requested during an ejb3 method call. The client side interceptor code is the following:

public class ExampleClientInterceptor implements Interceptor, Serializable {
 private static Logger logger = Logger.getLogger(ExampleClientInterceptor.class);

 public String getName() {
 return "ExampleClientInterceptor";
 }

 public Object invoke(Invocation invocation) throws Throwable {
 logger.debug("Client: request");
 SimpleMetaData metaData = invocation.getMetaData();
 metaData.addMetaData("tag", "attr", "Hello JBoss;-)");
 Object obj = invocation.invokeNext();
 logger.debug("Client: response");
 return obj;
 }
}

If I do an EJB3 request I get allways this exception:

java.lang.ClassCastException: org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput
 org.jboss.aop.util.MarshalledValue.writeExternal(MarshalledValue.java:190)
 org.jboss.serial.persister.ExternalizePersister.writeData(ExternalizePersister.java:58)
 org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.jav
a:275)
 org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:3
86)
 org.jboss.aop.metadata.SimpleMetaData.writeExternal(SimpleMetaData.java:226)
 org.jboss.serial.persister.ExternalizePersister.writeData(ExternalizePersister.java:58)
 org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.jav
a:275)
 org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:3
86)
 org.jboss.aop.joinpoint.MethodInvocation.writeExternal(MethodInvocation.java:321)
 org.jboss.serial.persister.ExternalizePersister.writeData(ExternalizePersister.java:58)
 org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.jav
a:275)
 org.jboss.serial.objectmetamodel.DataContainer$DataContainerOutput.writeObject(DataContainer.java:3
86)
 org.jboss.serial.io.MarshalledObjectForLocalCalls.<init>(MarshalledObjectForLocalCalls.java:38)
 org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:53)
 org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 de.fh_wiesbaden.cs.vs.jboss_ejb3_instrumentation.interceptor.client.ARMRunningClient.invoke(ARMRunn
ingClient.java:248)
 de.fh_wiesbaden.cs.vs.jboss_ejb3_instrumentation.interceptor.client.ClientARMInterceptor.invoke(Cli
entARMInterceptor.java:94)
 org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 de.fh_wiesbaden.cs.vs.jboss_ejb3_instrumentation.interceptor.client.ClientGetCorrelatorFromThreadLo
calInterceptor.invoke(ClientGetCorrelatorFromThreadLocalInterceptor.java:43)
 org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 org.jboss.ejb3.stateless.StatelessClusteredProxy.invoke(StatelessClusteredProxy.java:100)
 $Proxy92.getCategory(Unknown Source)
 de.fh_wiesbaden.cs.vs.xpetstore.web.struts.action.category.CategoryAction.doExecute(CategoryAction.
java:48)
 de.fh_wiesbaden.cs.vs.xpetstore.web.struts.action.BaseAction.execute(BaseAction.java:78)
 org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:446)
 org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:266)
 org.apache.struts.action.ActionServlet.process(ActionServlet.java:1292)
 org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 de.fh_wiesbaden.cs.vs.xpetstore.web.filter.SignOnFilter.doFilter(SignOnFilter.java:128)
 com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(Unknown Source)
 com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(Unknown Source)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

If I set the last parameter (Payload.KEY) for the addMetaData() method to 'AS_IS' then it works fine in jboss-4.0.4 and also 4.0.5. If the default payload key is MARSHALLED then it crashes with the ClassCastException.

Regards,
Thomas Termin

[tterm]

Hello,

no answers until now. :-) Would be more information helpful? I can provide testcases and all that if necessary!

Regards,
Thomas Termin

[tterm]

Hello,

I'm still interested in this problem. So could me at least somebody say why it works for JBoss-4.0.3SP1 but not for the later versions?

The problem is if I have a remote ejb client and a local webapp and I would set the Payload key to MARSHALLED the it would be crash for the webapp. Otherwise if I would set it to AS_IS then my metadata would be ignored for the remote client.

Regards,
Thomas Termin