Why stackoverflow occurs?
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)