Description of problem:

A SerializationException is experienced when using a List type in a human task for BPM Suite 6.1.0. It is similar to the error reported in [1]. However, it is initially related to the model class generated as follows:

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org.kie.services.client.serialization.SerializationException: Unable to marshall JaxbCommandsRequest instance.
...
Caused by: javax.xml.bind.MarshalException
 - with linked exception:
[com.sun.istack.SAXException2: class com.capitalone.Answer nor any of its super class is known to this context.

-> full error here: http://pastebin.test.redhat.com/287380
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After adding the class as a extra jaxb class, the error has changed:

addExtraJaxbClasses(new Class[] { com.sample.Answer.class })

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org.kie.remote.client.api.exception.RemoteApiException: IllegalStateException thrown with message 'Could not unmarshall user-defined class instance parameter of type 'jaxbListWrapper'':
java.lang.IllegalStateException: Could not unmarshall user-defined class instance parameter of type 'jaxbListWrapper'

-> full error here: http://pastebin.test.redhat.com/287381
_____________________________________________________________________

It should be fixed in 6.1.

[1] https://developer.jboss.org/thread/249814


Version-Release number of selected component (if applicable):

BPM Suite 6.1


How reproducible:

Always


Steps to Reproduce:

1. attached you can find projects.zip; download and unzip it;
2. jaxblist-model: build it and add it as a Artifact Repository in bc;
3. jaxblist-kjar: build this jar and upload it to bc. Create a deployment unit using this kjar ( you will have to fill out KieBase and KieSession as KieBase and KieSession respectively).  
4. example-rest-client: Import it to JBDS and use the tests here to start a process then attempt to complete a task, that is where the error will occur;
5. the user used by the HT is bpmsAdmin;


Actual results:

As the sample has included in CompleteTask61 as follows:

.addDeploymentId(deploymentId).addExtraJaxbClasses(new Class[] { com.sample.Answer.class })

You will see the jaxbListWrapper http://pastebin.test.redhat.com/287381.

But please also test it without this extra jaxb class and you will see 

So you will see http://pastebin.test.redhat.com/287380.


Expected results:

it should work without adding those extra jaxb classes.


Additional info: