[jboss-user] [JBoss jBPM] - Re: Exception while executing SubProcess

[suchi1247]

Thank u Martin.I could able to solve that exception now.
but now iam getting NullPointerException.
Below is the modified code and Exception .

  | JbpmConfiguration jbpmConfiguration =JbpmConfiguration.parseResource("hibernate.cfg");
  | 		JbpmContext jbpmContext=jbpmConfiguration.createJbpmContext();
  | 		  try{
  | //		parsing sub process
  | 		ProcessDefinition subProcessDefinition = ProcessDefinition.parseXmlResource("ChildProcess/processdefinition.xml");
  |          jbpmContext.deployProcessDefinition(subProcessDefinition);
  |         System.out.println("subproceess Deployed ");
  |         ProcessDefinition processDefinition = ProcessDefinition.parseXmlResource("MainProcess/processdefinition.xml");
  |     			jbpmContext.deployProcessDefinition(processDefinition);
  | 	System.out.println("Main proceess deployed");
  | 		
  |             	ProcessInstance processInstance = processDefinition.createProcessInstance();
  |       		    System.out.println(" a: "+ processInstance.getRootToken().getNode().getName());
  | 		processInstance.signal();
  | 		System.out.println(" b: "+ processInstance.getRootToken().getNode().getName());
  | 		System.out.println("going to Process State now");
  | 		processInstance.signal();
  | 		System.out.println(" c: "+ processInstance.getRootToken().getNode().getName());
  | 		System.out.println("reached to process State Now");
  | 	
  | 	
  | 		System.out.println(" :  "+ processInstance.getRootToken().getNode().getName());
  | 		
  | 		processInstance.signal();// i expect , signal to end node of main process here. but i got the below exception.
  | 		System.out.println(" d: "+ processInstance.getRootToken().getNode().getName());
  | 		
  | 		  }  	
  | 			catch(Exception e)
  | 			{e.printStackTrace();}
  | 			finally{
  | 				jbpmContext.close();
  | 				}
  | 
 And the exception is 
  |  java.lang.NullPointerException
  |     at org.jbpm.graph.node.ProcessState.leave(ProcessState.java:197)
  |     at org.jbpm.graph.exe.Token.signal(Token.java:194)
  |     at org.jbpm.graph.exe.Token.signal(Token.java:139)
  |     at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:251)
  |     at com.iton.servlets.TestProcessState.doGet(TestProcessState.java:110)
  |     at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
  |     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  |     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  |     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
  |     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
  |     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  |     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  |     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  |     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  |     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
  |     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.ja
  | 
  |     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  |     at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  |     at java.lang.Thread.run(Thread.java:595)
  | 

Plz tell me whats wrong in my code??

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