Service task problem with rc1

[frauke]

Hello everybody,

after I switched to the new version 5.0-rc1 I get the following error message with a serviceTask:

org.activiti.engine.ActivitiException: 'class', 'type', or 'expression' attribute is mandatory on serviceTask | de/vps/act/process/ButtonTestProcess3.bpmn20.xml | line 34 | column 69
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But the BPMN definition did not change and it was ok with beta2.
Here is the definition:

        <serviceTask id="t3" name="T3" activiti:class="de.vps.act.process.DummyActivitiTask" />
‍‍‍

Do you have any idea what the problem could be?

Frauke

[frederikherema1]

No need to use the activiti-namespace prefix on attributes anymore. Just use this:

<serviceTask id="t3" name="T3" class="de.vps.act.process.DummyActivitiTask" />

Woops, was too fast. This comment only applies for custom activiti-elements

[frederikherema1]

The custom BPMN extentions-namespace uri has switched from "http://activiti.org/bpmn-extensions" to "http://activiti.org/bpmn"

Be sure to use this in your root element:

<definitions
  xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
  xmlns:activiti="http://activiti.org/bpmn"
  targetNamespace="Examples">

[frauke]

ok, that works.
I hope you don't do that with every new release, though 

[frederikherema1]

We won't I promise

Since this was the RC1-release, this was the right time to make sure we are pleased with how everything is named. After the GA we want to keep all this core-stuff as stable as possible.

[asbachb]

I'm afraid that i am facing the same problem - but can not solve it with the tips in this thread:

My XML:

<?xml version="1.0" encoding="UTF-8"?>
<definitions id="definitions"
  xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
  xmlns:activiti="http://activiti.org/bpmn"
  targetNamespace="Examples">
<process id="helloworld" name="helloworld">
  <startEvent id="startevent1" name="Start"></startEvent>
  <serviceTask id="servicetask1" name="Service Task"
   activiti:class="de.asbach.alldeakz.bpmn.task.HelloServiceTask"></serviceTask>
  <sequenceFlow id="flow1" name="" sourceRef="startevent1"
   targetRef="servicetask1"></sequenceFlow>
  <sequenceFlow id="flow2" name="" sourceRef="servicetask1"
   targetRef="endevent1"></sequenceFlow>
  <endEvent id="endevent1" name="End"></endEvent>
</process>
</definitions>
Inovking with:
public void testBPMNProcess() throws Exception {
  ProcessEngine processEngine = new ProcessEngineBuilder()
  .configureFromPropertiesResource("activiti.properties")
  .buildProcessEngine();

  RepositoryService reposity = processEngine.getRepositoryService();
  reposity
   .createDeployment()
   //.addClasspathResource("example.xml")
   .addClasspathResource("step_by_step.bpmn20.xml")
   .deploy();
 
  ProcessInstance pi = processEngine
   .getRuntimeService()
   .startProcessInstanceByKey("helloworld");
But get the error:
org.activiti.engine.ActivitiException: 'class' or 'expr' attribute is mandatory on serviceTask

May you can give me a hint.

[jbarrez]

Which version of Activiti are you using?

The error seems to be the output of an exception from a previous release, while the namespace declaration is the latest one.

[asbachb]

Thanks for your suggestions. I updated the designer but forget to update the version in the pom file. Sorry for that.