getting node Class type when getting process definition from

[gregoiredx]

Hello,
I'm testing jBPM and it really is a good product.
But I'm stuck with a problem when trying to identify node "real" Class type when the process definition is retrieve from datablase.

More practicallly :
JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext();
try {
ProcessInstance processInstance = jbpmContext.loadProcessInstanceForUpdate(processInstanceId);
Object[] args = {processInstance};
method.invoke(null, args);
} finally {
// Tear down the pojo persistence context.
jbpmContext.close();
}

[gregoiredx]

Sorry I did post before finishing...

Hello,
I'm testing jBPM and it really is a good product.
But I'm stuck with a problem when trying to identify node "real" Class type when the process definition is retrieve from datablase.

More practicallly :
JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext();
try {
ProcessInstance processInstance = jbpmContext.loadProcessInstanceForUpdate(processInstanceId);

processInstance.getRootToken().getNode().getClass();
<= this always has org.jbpm.graph.def.Node$$EnhancerByCGLIB$$a35a6dd8 as value

How could I get the real type (TaskNode, StartState,...)?
(without using the xml definition)

thank you

[tom.baeyens]

just a thought:

Class clazz = processInstance.getRootToken().getNode().getClass();
if (clazz.getName().startsWith(clazz.getSuperClass().getName()) {
 clazz = clazz.getSuperClass();
}

another idea might be

Object o = processInstance.getRootToken().getNode();
if (o.getClass()==o.getClass().getSuperClass()) {
 // it must be a proxy
}

[tom.baeyens]

forget the last one... it's a wrong combination of constructs i used once to implement the equals method of proxyable objects.

[msynovic]

I asked the same question a week ago and didn't get a response. So as far as I know the API doesn't expose this information. The only way we've been able to get that information is to use Hibernate getClass method.

Example

if( Hibernate.getClass(processInstance.getRootToken().getNode()).equals(State.class)) {
 ...
}

[gregoiredx]

thank you, this work just fine.

[faizal.rashid]

this help. but it still not allow me to cast it to the real object. so after looking around, this is the solution that i found :

if (node instanceof HibernateProxy) {
 node = (Node) ((HibernateProxy) node).getHibernateLazyInitializer()
 .getImplementation();
}

then i can do something like :

if (node instanceof TaskNode) {
 taskNode = (TaskNode) node;
}