problem with using constranits of split node

[luhong]

Hi,  I am newbie to jBPM and I am using JBPM5.2.

I want to program a split process and get exception messages:

Exception in thread "main" java.lang.IllegalArgumentException: XOR split could not find at least one valid outgoing connection for split null

at org.jbpm.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:98)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:122)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:185)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:150)

at org.jbpm.workflow.instance.node.StartNodeInstance.triggerCompleted(StartNodeInstance.java:49)

at org.jbpm.workflow.instance.node.StartNodeInstance.internalTrigger(StartNodeInstance.java:41)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:122)

at org.jbpm.ruleflow.instance.RuleFlowProcessInstance.internalStart(RuleFlowProcessInstance.java:35)

at org.jbpm.process.instance.impl.ProcessInstanceImpl.start(ProcessInstanceImpl.java:188)

at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.start(WorkflowProcessInstanceImpl.java:303)

at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:168)

at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:138)

at org.jbpm.process.instance.ProcessRuntimeImpl.startProcess(ProcessRuntimeImpl.java:130)

at org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1074)

at org.drools.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:301)

at com.infy.workflow.MainTest.main(MainTest.java:111)

forgive me for my bad english.

Thanks very much.

the source as below:

public class MainTest {
public static void main(String[] args) {
  RuleFlowProcess process = new RuleFlowProcess();
  process.setId("com.infy.login");
  process.setName("login process");

  List<Variable> variables = new ArrayList<Variable>();
  Variable variable = new Variable();
  variable.setName("isLogin");
  BooleanDataType isLogin = new BooleanDataType();
  isLogin.writeValue(true);
  variable.setType(isLogin);
  variables.add(variable);
  process.getVariableScope().setVariables(variables);

  StartNode startNode = new StartNode();
  startNode.setName("Start");
  startNode.setId(1);
  process.addNode(startNode);

  Split splitNode = new Split(Split.TYPE_XOR);
  splitNode.setId(2);
  process.addNode(splitNode);
  new ConnectionImpl(startNode, Node.CONNECTION_DEFAULT_TYPE, splitNode, Node.CONNECTION_DEFAULT_TYPE);

  ActionNode actionNode = new ActionNode();
  actionNode.setName("validUser");
  DroolsAction action = new DroolsConsequenceAction("java", null);
  action.setMetaData("Action", new Action() {
   public void execute(ProcessContext context) throws Exception {
    System.out.println("The user is an valid user.");
   }
  });
  actionNode.setAction(action);
  actionNode.setId(3);
  process.addNode(actionNode);
  Connection validFlow = new ConnectionImpl(splitNode, Node.CONNECTION_DEFAULT_TYPE, actionNode,
    Node.CONNECTION_DEFAULT_TYPE);
  Constraint validConstraint = new RuleConstraintEvaluator();
  validConstraint.setDialect("java");
  validConstraint.setType("code");
  validConstraint.setConstraint("return false;");
  splitNode.setConstraint(validFlow, validConstraint);

  ActionNode actionNode2 = new ActionNode();
  actionNode2.setName("validUser");
  DroolsAction action2 = new DroolsConsequenceAction("java", null);
  action2.setMetaData("Action", new Action() {
   public void execute(ProcessContext context) throws Exception {
    System.out.println("The user is an invalid user.");
   }
  });
  actionNode2.setAction(action2);
  actionNode2.setId(4);
  process.addNode(actionNode2);
  Connection invalidFlow = new ConnectionImpl(splitNode, Node.CONNECTION_DEFAULT_TYPE, actionNode2,
    Node.CONNECTION_DEFAULT_TYPE);
  Constraint invalidConstraint = new RuleConstraintEvaluator();
  invalidConstraint.setDialect("java");
  invalidConstraint.setType("code");
  invalidConstraint.setConstraint("return true;");
  splitNode.setConstraint(invalidFlow, invalidConstraint);

  EndNode endNode = new EndNode();
  endNode.setName("EndNode");
  endNode.setId(5);
  process.addNode(endNode);
  new ConnectionImpl(actionNode, Node.CONNECTION_DEFAULT_TYPE, endNode, Node.CONNECTION_DEFAULT_TYPE);

  EndNode endNode2 = new EndNode();
  endNode2.setName("EndNode2");
  endNode2.setId(6);
  process.addNode(endNode2);
  new ConnectionImpl(actionNode2, Node.CONNECTION_DEFAULT_TYPE, endNode2, Node.CONNECTION_DEFAULT_TYPE);

  KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
  AbstractRuleBase ruleBase = (AbstractRuleBase) ((InternalKnowledgeBase) kbase).getRuleBase();
  ruleBase.addProcess(process);
  StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

  ProcessInstance processInstance = ksession.startProcess("com.infy.login");
}
}

[salaboy21]

As the error mention, your process is reaching an XOR split and it must have a valid path to continue and it's not finding one. Please check your process definition.

Cheers

[luhong]

hi, Mauricio, thanks for your reply.

I know what is the cause of problem. it's my constranits definition is not right. I couldn't find an guide how to define a constranit for split node using process api in the JBPM5.2 user guide.

Could you tell me how to define the constranit or where to find the guide. Thanks.

[08august]

hi ,

can u send me modified code for the above problem, defining a constraints of split node with a java dialect by using process API.

Thanking you

[08august]

can u tell me how to define a constraint for a split node with a java dialect by using process API

  Thanking u