Description of problem:

In certain szenarios using a custom workitemhandler causes errors when saving a process model with the custom workitemhandler in it.


Version-Release number of selected component (if applicable):

6.2

Steps to Reproduce:
1) Create Class  

public class LightWorkItemHandler {

 

 public void abortWorkItem(WorkItem wi, WorkItemManager wim) {

       System.out.println("Oh no, my item aborted..");

  }


  public void executeWorkItem(WorkItem wi, WorkItemManager wim) { 

       wim.completeWorkItem(wi.getId(), null);

  }

}


2)  Imported it to the repository via "Authoring" -> "Artefact Repository"

  

3) Add to my project as a project dependency


4) Registered in ./jboss-eap-6.4/standalone/deployments/business-central.war/WEB-INF/classes/META-INF/kie-wb-deployment-descriptor.xml


       <workItemHandler name="LightController" type="new com.redhat.demo.iotdemo.LightWorkItemHandler()"/>


5) Created new Work Item Definition

import org.drools.core.process.core.datatype.impl.type.StringDataType;

import org.drools.core.process.core.datatype.impl.type.ObjectDataType;

[

  [

    "name" : "LightController", 

    "results" : [ 

        "Result" : new ObjectDataType("java.util.Map") 

    ], 

    "displayName" : "My LightController", 

    "icon" : "../../../../../../../../../global/defaultlogicon.gif" 

  ]

]



Actual results:
bpm_1      | 20:35:00,424 ERROR [org.jbpm.designer.bpmn2.impl.Bpmn2JsonUnmarshaller] (http-/0.0.0.0:8080-7) 0

bpm_1      | 20:35:00,427 ERROR [stderr] (http-/0.0.0.0:8080-7) java.lang.NullPointerException

bpm_1      | 20:35:00,428 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.eclipse.bpmn2.util.Bpmn2ResourceImpl.setIdEvenIfSet(Bpmn2ResourceImpl.java:157)

bpm_1      | 20:35:00,429 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.eclipse.bpmn2.util.Bpmn2ResourceImpl.prepareSave(Bpmn2ResourceImpl.java:126)

bpm_1      | 20:35:00,430 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.jbpm.designer.bpmn2.resource.JBPMBpmn2ResourceImpl.createXMLSave(JBPMBpmn2ResourceImpl.java:58)

bpm_1      | 20:35:00,431 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doSave(XMLResourceImpl.java:192)

bpm_1      | 20:35:00,431 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1406)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.jbpm.designer.web.profile.impl.JbpmProfileImpl$1.parseModel(JbpmProfileImpl.java:238)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.jbpm.designer.repository.servlet.AssetServiceServlet.doPost(AssetServiceServlet.java:121)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.uberfire.ext.security.server.SecureHeadersFilter.doFilter(SecureHeadersFilter.java:53)

bpm_1      | 20:35:00,432 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.uberfire.ext.security.server.SecurityIntegrationFilter.doFilter(SecurityIntegrationFilter.java:45)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:512)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)

bpm_1      | 20:35:00,433 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)

bpm_1      | 20:35:00,434 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)

bpm_1      | 20:35:00,434 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:150)

bpm_1      | 20:35:00,434 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)

bpm_1      | 20:35:00,434 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:419)

bpm_1      | 20:35:00,434 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)

bpm_1      | 20:35:00,434 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)

bpm_1      | 20:35:00,435 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:854)

bpm_1      | 20:35:00,437 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653)

bpm_1      | 20:35:00,438 ERROR [stderr] (http-/0.0.0.0:8080-7) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926)

bpm_1      | 20:35:00,439 ERROR [stderr] (http-/0.0.0.0:8080-7) at java.lang.Thread.run(Thread.java:745)

bpm_1      | 20:35:00,440 ERROR [org.jbpm.designer.repository.servlet.AssetServiceServlet] (http-/0.0.0.0:8080-7) Error storing asset: null

Expected results:


Additional info: