Null Pointer error when opening an Activiti diagram

pranam — Mon, 26 Mar 2012 06:14:55 GMT

Dear all,I have been modelling a process using Activiti Process Designer on Eclipse and was able to model without issues. But all of a sudden, one of the diagrams stopped opening. If I try to open the diagram in Eclipse getting the below error. Could you please advice? I am using Eclipse Indigo Vers

Re: Null Pointer error when opening an Activiti diagram

ct1 — Sat, 28 Apr 2012 13:02:51 GMT

Sirs:

I did not see a reply to this post.

I experienced the same problem with Eclipse 5.8 using Eclipse Helios Service Release 2, Build id: 20110218-0911.

Pranam,
Did you resolve it yourself? If so, please share what you did?

Thank you.

The bpmn20 file:


<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:smileysurprised:mgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:smileysurprised:mgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
  <process id="B-Process" name="B-Process">
    <documentation>Place documentation for the 'B-Process' process here.</documentation>
    <scriptTask id="bProcessLog" name="B Process Log" scriptFormat="groovy">
      <script><![CDATA[Date now = new Date();
String nowStr = now.format('yyyy/MM/dd HH:mm:ss SSS');
print "B-Process started at $nowStr \n";]]></script>
    </scriptTask>
    <endEvent id="procBTimerEnd" name="ProcB Timer End"></endEvent>
    <sequenceFlow id="flow3" name="" sourceRef="bProcessLog" targetRef="nap"></sequenceFlow>
    <sequenceFlow id="flow4" name="" sourceRef="nap" targetRef="procBTimerEnd"></sequenceFlow>
    <scriptTask id="nap" name="Nap" activiti:async="true" scriptFormat="groovy">
      <script><![CDATA[print "B-Process going to sleep\n";Thread.sleep(5000);print "B-Process is awake now.\n";]]></script>
    </scriptTask>
    <startEvent id="bProcessStart" name="B-Process-Start"></startEvent>
    <sequenceFlow id="flow5" name="" sourceRef="bProcessStart" targetRef="bProcessLog"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_B-Process">
    <bpmndi:BPMNPlane bpmnElement="B-Process" id="BPMNPlane_B-Process">
      <bpmndi:BPMNShape bpmnElement="bProcessLog" id="BPMNShape_bProcessLog">
        <omgdc:Bounds height="55" width="105" x="300" y="160"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="procBTimerEnd" id="BPMNShape_procBTimerEnd">
        <omgdc:Bounds height="35" width="35" x="640" y="170"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="nap" id="BPMNShape_nap">
        <omgdc:Bounds height="55" width="105" x="460" y="160"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="bProcessStart" id="BPMNShape_bProcessStart">
        <omgdc:Bounds height="35" width="35" x="180" y="170"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="405" y="187"></omgdi:waypoint>
        <omgdi:waypoint x="460" y="187"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="565" y="187"></omgdi:waypoint>
        <omgdi:waypoint x="640" y="187"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
        <omgdi:waypoint x="215" y="187"></omgdi:waypoint>
        <omgdi:waypoint x="300" y="187"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

Re: Null Pointer error when opening an Activiti diagram

trademak — Sat, 28 Apr 2012 13:34:37 GMT

Hi,

Please upgrade to Activiti Designer 5.9.1 and Eclipse Indigo. I think this error will not be present there anymore.

Best regard,

Re: Null Pointer error when opening an Activiti diagram

ct1 — Sat, 28 Apr 2012 13:59:14 GMT

Thank you for the quick response.

I am unable to upgrade at this time because my project is to build some load test benchmarks in 5.8 to use in doing load tests in 5.9. The definition of my project prevents me from using 5.9.

Any other ideas?

I appreciate your help.

Re: Null Pointer error when opening an Activiti diagram

trademak — Wed, 02 May 2012 09:34:36 GMT

Hi,

The Activiti Designer 5.9.1 can also be used for Activiti 5.8 without any problems.

Best regards,

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