[jboss-user] [jBPM] New message: "org.jbpm.bpmn.model.BpmnProcessDefinition cannot be cast to org.jbpm.api.ProcessDefinitionImpl"

[Michele Mauro]

User development,

A new message was posted in the thread "org.jbpm.bpmn.model.BpmnProcessDefinition cannot be cast to org.jbpm.api.ProcessDefinitionImpl":

http://community.jboss.org/message/526106#526106

Author  : Michele Mauro
Profile : http://community.jboss.org/people/MicheleMauro

Message:
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Hi all!
 
I'm porting an application from jbpm3 to jbpm4, replacing the necessary parts. Our main goal is to be able to run BPMN2 diagrams. I have Spring 3 integration set up and all that, but I'm stumbling on an error I can't explain. I have searched google and the jira to no avail...
 
The setup:
I deploy the vacation process:
 
 String key = repo.createDeployment().addResourceFromClasspath(
          "processes/vacationrequest.bpmn.xml").deploy();
      System.out.println("Deployed: " + key);
      List<Deployment> deps = repo.createDeploymentQuery().list();
      for (Deployment d : deps)
        System.out.println(d.getId() + " " + d.getName() + " " + d.getState());
 
And everything goes fine. When I go querying for that process definition, however, I get:
 
Code:
 
    Deployment d=repo.createDeploymentQuery().list().get(0);
    String key= d.getId();    
    List<ProcessDefinition> list = repo.createProcessDefinitionQuery()
        .deploymentId(key).list();
 
Exception:
 
java.lang.ClassCastException: org.jbpm.bpmn.model.BpmnProcessDefinition cannot be cast to org.jbpm.api.ProcessDefinitionImpl
 at org.jbpm.pvm.internal.query.ProcessDefinitionQueryImpl.execute(ProcessDefinitionQueryImpl.java:72)
 at org.jbpm.pvm.internal.query.AbstractQuery.execute(AbstractQuery.java:87)
 at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
 at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)
 at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
 at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
 at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)
 at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)
 at org.jbpm.pvm.internal.query.AbstractQuery.untypedList(AbstractQuery.java:68)
 at org.jbpm.pvm.internal.query.ProcessDefinitionQueryImpl.list(ProcessDefinitionQueryImpl.java:141)
 at my.company.app.service.ContextRefreshListener.onApplicationEvent(ContextRefreshListener.java:46)
....
 
I can't understand why: the types are compatible. A classloader issue? but how?
 
The setup is quite trivial:
Hypersonic db - Spring 3 - Jetty webserver launched with mvn jetty:run
 
Anyone has a clue?
 
Thank you in advance,
 
Michele Mauro

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