activiti:class __ ActivitiIllegalArgumentException:

[fahad1]

I want to attach com.services.AutherticateUser_WS class with my service Task.
<serviceTask id="sid-6A5A3583-D7C9-4188-81BC-58C6C16F681C" name="myService" activiti:class="com.services.AutherticateUser_WS"></serviceTask>

But I am getting the following error
Caused by: org.activiti.engine.ActivitiIllegalArgumentException: com.services.AutherticateUser_WS doesn't implement org.activiti.engine.delegate.JavaDelegate nor org.activiti.engine.impl.pvm.delegate.ActivityBehavior


Infact, my class implements this. Below is the code of my class.


package com.services;

import org.activiti.engine.RuntimeService;
import org.activiti.engine.delegate.DelegateExecution;

import org.activiti.engine.delegate.JavaDelegate;
import org.activiti.engine.impl.pvm.delegate.ActivityBehavior;
import org.activiti.engine.impl.pvm.delegate.ActivityExecution;

public class AutherticateUser_WS implements JavaDelegate, ActivityBehavior {


   @Override
   public void execute(DelegateExecution execution) throws Exception {
      // TODO Auto-generated method stub
      
      System.out.println( " some thing is running ");
      RuntimeService runtimeService = execution.getEngineServices().getRuntimeService();
       runtimeService.startProcessInstanceByKey("process123");
      
   
      
      String group = (String) execution.getVariable("group");
        System.out.println(group);
      
   }

   @Override
   public void execute(ActivityExecution execution) throws Exception {
      // TODO Auto-generated method stub
      System.out.println( "some thing is running ");
      RuntimeService runtimeService = execution.getEngineServices().getRuntimeService();
       runtimeService.startProcessInstanceByKey("process123");
      
   }

}


Any idea to fix this error

[jbarrez]

You only need to implement the ActivityBehaviour class. The JavaDelegate is only a subset of it.

[fahad1]

thanks Dear jbarrez. But I am yet not able to execute it. Now I am only implementing ActivityBehaviour, but still getting the same error
Caused by: org.activiti.engine.ActivitiIllegalArgumentException: fitman.services .AutherticateUser_WS doesn't implement org.activiti.engine.delegate.JavaDelegate nor org.activiti.engine.impl.pvm.delegate.ActivityBehavior
        at org.activiti.engine.impl.bpmn.helper.ClassDelegate.getActivityBehaviorInstance(ClassDelegate.java:143)
        at org.activiti.engine.impl.bpmn.helper.ClassDelegate.execute(ClassDelegate.java:113)


Code of my class is as follows.

import org.activiti.engine.RuntimeService;
import org.activiti.engine.impl.pvm.delegate.ActivityBehavior;
import org.activiti.engine.impl.pvm.delegate.ActivityExecution;

public class AutherticateUser_WS implements   ActivityBehavior  {


@Override
public void execute(ActivityExecution execution) throws Exception {
  // TODO Auto-generated method stub
  System.out.println( " 11 some thing is running ");
  RuntimeService runtimeService = execution.getEngineServices().getRuntimeService();
     runtimeService.startProcessInstanceByKey("process123");
 
}

}

Any hint?  any project code or help for getting started.

[trademak]

Already answered in your other post. It basically says is already in the exception message. You should implement the JavaDelegate interface and not the ActivityBehavior class.

Best regards,

[fahad1]

as jbarrez said. we can implement either class javaDelegate or ActivityBehavior. The JavaDelegate is only a subset of  ActivityBehavior.
anyways, its running now.

thanks for the feedback