flowableプロセスノードの順序データの取得

4547 ワード
java 
 /***
     *   bpmnmodel           
     * @param processInstanceId
     * @param taskList
     * @param flowElements
     * @param workflowRequestFormData
     * @param curFlowElement
     */
    private void getTaskList(String processInstanceId, List taskList, Collection flowElements, Map workflowRequestFormData, FlowElement curFlowElement) {
        if (curFlowElement == null && taskList.size() == 0) {
            //      UserTask
            FlowElement startElement = flowElements.stream().filter(flowElement -> flowElement instanceof StartEvent).collect(Collectors.toList()).get(0);
            List outgoingFlows = ((StartEvent) startElement).getOutgoingFlows();
            String targetRef = outgoingFlows.get(0).getTargetRef();
            //   ID  FlowElement
            FlowElement targetElementOfStartElement = getFlowElement(flowElements, targetRef);
            if (targetElementOfStartElement instanceof UserTask) {
                this.getTaskList(processInstanceId, taskList, flowElements, workflowRequestFormData, targetElementOfStartElement);
            }

        } else if (curFlowElement instanceof UserTask) {
            //   Usertask       
            taskList.add(curFlowElement);
            String targetRef = "";
            List outgoingFlows = ((UserTask) curFlowElement).getOutgoingFlows();
            if (outgoingFlows.size() == 1) {
                targetRef = outgoingFlows.get(0).getTargetRef();
            } else {
                //         sequenceFlow 
                SequenceFlow sequenceFlow = getSequenceFlow(workflowRequestFormData, outgoingFlows);
                if (sequenceFlow != null) {
                    targetRef = sequenceFlow.getTargetRef();
                }
            }
            //   ID  FlowElement
            FlowElement targetElement = getFlowElement(flowElements, targetRef);

            this.getTaskList(processInstanceId, taskList, flowElements, workflowRequestFormData, targetElement);
        } else if (curFlowElement instanceof ExclusiveGateway) {
            String targetRef = "";
            //        ，       sequenceFlow   FlowElement
            List exclusiveGatewayOutgoingFlows = ((ExclusiveGateway) curFlowElement).getOutgoingFlows();
            //         sequenceFlow 
            SequenceFlow sequenceFlow = getSequenceFlow(workflowRequestFormData, exclusiveGatewayOutgoingFlows);
            if (sequenceFlow != null) {
                targetRef = sequenceFlow.getTargetRef();
            }
            //   ID  FlowElement
            FlowElement targetElement = getFlowElement(flowElements, targetRef);

            this.getTaskList(processInstanceId, taskList, flowElements, workflowRequestFormData, targetElement);
        }
    }

/***
     *   ID  FlowElement
     * @param flowElements
     * @param targetRef
     * @return
     */
    private FlowElement getFlowElement(Collection flowElements, String targetRef) {
        List targetFlowElements = flowElements.stream().filter(
                flowElement -> !StringUtils.isEmpty(flowElement.getId()) && flowElement.getId().equals(targetRef)
        ).collect(Collectors.toList());
        if (targetFlowElements.size() > 0) {
            return targetFlowElements.get(0);
        }
        return null;
    }

  /***
     *         sequenceFlow 
     * @param workflowRequestFormData
     * @param outgoingFlows
     * @return
     */
    private SequenceFlow getSequenceFlow(Map workflowRequestFormData, List outgoingFlows) {

        List sequenceFlows = outgoingFlows.stream().filter(item -> {
            Object execConditionExpressionResult = null;
            boolean re = false;
            try {
                execConditionExpressionResult = this.getElValue(item.getConditionExpression(), workflowRequestFormData);
            } catch (Exception e) {
                e.printStackTrace();
            }
            if (execConditionExpressionResult.equals("true")) {
                re = true;
            }
            return (Boolean) execConditionExpressionResult;
        }).collect(Collectors.toList());
        if (sequenceFlows.size() > 0) {
            return sequenceFlows.get(0);

        }
        return null;
    }
try、catch、finallyがreturnを返す問題について
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