Java Code Examples for org.flowable.bpmn.model.Process#findParent()

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Example 1
Source File: EndEventValidator.java    From flowable-engine with Apache License 2.0 8 votes vote down vote up 
@Override
protected void executeValidation(BpmnModel bpmnModel, Process process, List<ValidationError> errors) {
    List<EndEvent> endEvents = process.findFlowElementsOfType(EndEvent.class);
    for (EndEvent endEvent : endEvents) {
        if (endEvent.getEventDefinitions() != null && !endEvent.getEventDefinitions().isEmpty()) {

            EventDefinition eventDefinition = endEvent.getEventDefinitions().get(0);

            // Error end event
            if (eventDefinition instanceof CancelEventDefinition) {

                FlowElementsContainer parent = process.findParent(endEvent);
                if (!(parent instanceof Transaction)) {
                    addError(errors, Problems.END_EVENT_CANCEL_ONLY_INSIDE_TRANSACTION, process, endEvent, "end event with cancelEventDefinition only supported inside transaction subprocess");
                }

            }

        }
    }
}
Example 2
Source File: ExecutionGraphUtil.java    From flowable-engine with Apache License 2.0 4 votes vote down vote up 
public static boolean isReachable(Process process, FlowNode sourceElement, FlowNode targetElement, Set<String> visitedElements) {
    
    // Special case: start events in an event subprocess might exist as an execution and are most likely be able to reach the target
    // when the target is in the event subprocess, but should be ignored as they are not 'real' runtime executions (but rather waiting for a trigger)
    if (sourceElement instanceof StartEvent && isInEventSubprocess(sourceElement)) {
        return false;
    }

    // No outgoing seq flow: could be the end of eg . the process or an embedded subprocess
    if (sourceElement.getOutgoingFlows().size() == 0) {
        visitedElements.add(sourceElement.getId());

        FlowElementsContainer parentElement = process.findParent(sourceElement);
        if (parentElement instanceof SubProcess) {
            sourceElement = (SubProcess) parentElement;
        } else {
            return false;
        }
    }

    if (sourceElement.getId().equals(targetElement.getId())) {
        return true;
    }

    // To avoid infinite looping, we must capture every node we visit
    // and check before going further in the graph if we have already
    // visited the node.
    visitedElements.add(sourceElement.getId());

    List<SequenceFlow> sequenceFlows = sourceElement.getOutgoingFlows();
    if (sequenceFlows != null && sequenceFlows.size() > 0) {
        for (SequenceFlow sequenceFlow : sequenceFlows) {
            String targetRef = sequenceFlow.getTargetRef();
            FlowNode sequenceFlowTarget = (FlowNode) process.getFlowElement(targetRef, true);
            if (sequenceFlowTarget != null && !visitedElements.contains(sequenceFlowTarget.getId())) {
                boolean reachable = isReachable(process, sequenceFlowTarget, targetElement, visitedElements);

                if (reachable) {
                    return true;
                }
            }
        }
    }

    return false;
}