TaskNode ClassCastException

[tibocu]

I run a trivial example.

The token is located on a TaskNode. I checked.

1 Token token = processInstance.getRootToken();
2 Node node = token.getNode();
3 TaskNode taskNode = (TaskNode)node;

The node is not a TaskNode, but an hibernate proxy, and I get the following exception on line 3:
java.lang.ClassCastException: org.jbpm.graph.def.Node$$EnhancerByCGLIB$$cdd399be

J2SE 5 application
jBpm 3.1

Any idea ?

[tibocu]

Strange,

If of write:
1 Token token = processInstance.getRootToken();
2 Node node = processDefinition.getNode(token.getNode().getName());
3 TaskNode taskNode = (TaskNode)node;

It works !

It looks that the Node returned by the token is not correctly instanciated.

Something I didn't get or a bug ?

[tibocu]

Fixed by writing:

1 Token token = processInstance.getRootToken();
2 TaskNode taskNode = (TaskNode)jbpmContext.
getSession().
load(TaskNode.class, token.getNode().getId());

See:
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=73123

[tom.baeyens]

this is one of the hibernate limitations of using proxies. see hibernate reference manual for more info.

reloading through the session is indeed the best approach.

regards, tom.