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ProcessContext Throwing NPE
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created by <a href="https://community.jboss.org/people/roxy1987">roxy1987</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/801365#801365">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi community,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have run into an issue trying to set a variable.</p><p>What I want is to set a variable while completing a task. The following is what I do : </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java"><font color="darkgreen">//Just before task complete I call the following code.</font>
StatefulKnowledgeSession kSession = BpmRepositoryConfig.createSession();
  ProcessContext kContext = <font color="navy"><b>new</b></font> ProcessContext(kSession);
  ProcessInstance processInstance = kSession.getProcessInstance(taskData.getProcessInstanceId());
  logger.info(<font color="red">"ProcInst : "</font>+processInstance.getId());
  kContext.setProcessInstance(processInstance);
  <font color="navy"><b>for</b></font> (Entry<String, Object> entry : map.entrySet())
  <font color="navy">{</font>
      logger.info(entry.getKey() + <font color="red">"/"</font> + entry.getValue());
      <font color="navy"><b>if</b></font>(!(kContext == <font color="navy"><b>null</b></font>))
       kContext.setVariable(entry.getKey(), entry.getValue());
      <font color="navy"><b>else</b></font>
       logger.severe(<font color="red">"KContext is Null"</font>);
  <font color="navy">}</font>
 
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>KContext is not null. But it throws the following NPE : </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">[3/7/13 10:47:46:951 COT] 00000110 SystemErr     R java.lang.NullPointerException
[3/7/13 10:47:46:951 COT] 00000110 SystemErr     R  at org.jbpm.process.instance.impl.ProcessInstanceImpl.getProcess(ProcessInstanceImpl.java:68)
[3/7/13 10:47:46:951 COT] 00000110 SystemErr     R  at org.jbpm.process.instance.impl.ProcessInstanceImpl.getContextInstance(ProcessInstanceImpl.java:133)
[3/7/13 10:47:46:951 COT] 00000110 SystemErr     R  at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.setVariable(WorkflowProcessInstanceImpl.java:238)
[3/7/13 10:47:46:951 COT] 00000110 SystemErr     R  at org.drools.spi.ProcessContext.setVariable(ProcessContext.java:68)
[3/7/13 10:47:46:951 COT] 00000110 SystemErr     R  at pe.com.bcp.model.BpmAPI.createTaskVariables(Unknown Source)
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Need help please. And other ideas to create task variables are welcome. Thanks.</p></div>
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