topic Exception while executing a class associated with user task in Alfresco Archive

Exception while executing a class associated with user task

vijayd — Thu, 13 Mar 2014 06:25:17 GMT

I have associated a class to a user task and that task is assigned to kermit. Now when kermit commits the task, the class must be instantiate and execute ; But, I am getting an exception unable to instantiate a class "demo.tasklistener.DemoTaskListener" on activiti explorer and following error on th

Re: Exception while executing a class associated with user task

martin_grofcik — Thu, 13 Mar 2014 06:40:47 GMT

Hi,


Caused by: org.activiti.engine.ActivitiException: Exception while invoking TaskListener: demo.tasklistener.DemoTaskListener doesn't implement interface org.activiti.engine.delegate.TaskListener

DemoTaskListener should implement TaskListener interface.

Regards
Martin

Re: Exception while executing a class associated with user task

vijayd — Mon, 17 Mar 2014 04:36:56 GMT

Hi,
This is my class, you can see DemoTaskListener has implemented TaskListener interface :

package demo.tasklistener;

import org.activiti.engine.delegate.DelegateTask;
import org.activiti.engine.delegate.TaskListener;

public class DemoTaskListener implements TaskListener {

private static final long serialVersionUID = 1L;

@Override
public void notify(DelegateTask arg0) {

System.out.println("\n\n\n\t\t\tTaskListener Executed….\n\n\n");
}

}

Re: Exception while executing a class associated with user task

martin_grofcik — Mon, 17 Mar 2014 07:32:56 GMT

Hi Vijay.
In that case you could follow existing working example and try to compare what is different in yours… to find an error.
One example could be
org.activiti.engine.test.bpmn.usertask.UserTaskTest#testCompleteAfterParallelGateway

an activiti sources.
Regards
Martin