BPMN2:

S - <O> - Script Task - <X> - E

       +<=-----------------+

Script Task:

ProcessInstance p = kcontext.getProcessInstance();

Long c = (Long) ((RuleFlowProcessInstance)p).getVariable("counter");

System.out.println(c + " - Hello jBPM 7.7.0 !");

((RuleFlowProcessInstance)p).setVariable("counter", new Long(c + 1));

X: Exclusive Gateway - Condition to go to E

ProcessInstance p = kcontext.getProcessInstance();

Long c = (Long) ((RuleFlowProcessInstance)p).getVariable("counter");

return (c > 300);

System.out:

1 - Hello jBPM 7.7.0 !

2 - Hello jBPM 7.7.0 !

     :

272 - Hello jBPM 7.7.0 !

273 - Hello jBPM 7.7.0 !

Exception in thread "main" java.lang.StackOverflowError

at java.nio.CharBuffer.wrap(CharBuffer.java:373)

at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:265)

at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125)

at java.io.OutputStreamWriter.write(OutputStreamWriter.java:207)

at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:129)

at java.io.PrintStream.write(PrintStream.java:526)

at java.io.PrintStream.print(PrintStream.java:669)

at java.io.PrintStream.println(PrintStream.java:806)

at com.sample.Process_com$u46$sample$u46$HelloL1214852879.action0(Process_com$u46$sample$u46$HelloL1214852879.java:17)

at com.sample.Process_com$u46$sample$u46$HelloL1214852879Action0Invoker.execute(Process_com$u46$sample$u46$HelloL1214852879Action0Invoker.java:14)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.executeAction(NodeInstanceImpl.java:213)

at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:47)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:186)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:380)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:339)

at org.jbpm.workflow.instance.node.JoinInstance.triggerCompleted(JoinInstance.java:268)

at org.jbpm.workflow.instance.node.JoinInstance.internalTrigger(JoinInstance.java:132)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:186)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:380)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:395)

at org.jbpm.workflow.instance.node.SplitInstance.executeStrategy(SplitInstance.java:116)

at org.jbpm.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:62)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:186)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:380)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:339)

at org.jbpm.workflow.instance.node.ActionNodeInstance.triggerCompleted(ActionNodeInstance.java:60)

at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:56)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:186)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:380)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:339)

at org.jbpm.workflow.instance.node.JoinInstance.triggerCompleted(JoinInstance.java:268)

at org.jbpm.workflow.instance.node.JoinInstance.internalTrigger(JoinInstance.java:132)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:186)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:380)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:395)

at org.jbpm.workflow.instance.node.SplitInstance.executeStrategy(SplitInstance.java:116)

at org.jbpm.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:62)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:186)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:380)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:339)

:

(stacktrace of the same pattern are continuous)

jBPM: 7.7.0

Java SE 8 (32 bit)