44 lines
1.3 KiB
Java
44 lines
1.3 KiB
Java
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package com.ruoyi.flowable.utils;
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import org.flowable.bpmn.converter.BpmnXMLConverter;
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import org.flowable.bpmn.model.BpmnModel;
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import org.flowable.bpmn.model.FlowElement;
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import org.flowable.bpmn.model.Process;
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import org.flowable.bpmn.model.StartEvent;
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import org.flowable.common.engine.impl.util.io.StringStreamSource;
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import java.util.Collection;
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/**
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* @author KonBAI
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* @createTime 2022/3/26 19:04
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*/
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public class ModelUtils {
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private static final BpmnXMLConverter bpmnXMLConverter = new BpmnXMLConverter();
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/**
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* xml转bpmnModel对象
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*
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* @param xml xml
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* @return bpmnModel对象
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*/
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public static BpmnModel getBpmnModel(String xml) {
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return bpmnXMLConverter.convertToBpmnModel(new StringStreamSource(xml), false, false);
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}
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/**
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* 获取开始节点
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*
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* @param model bpmnModel对象
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* @return 开始节点（未找到开始节点，返回null）
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*/
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public static StartEvent getStartEvent(BpmnModel model) {
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Process process = model.getMainProcess();
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Collection<FlowElement> elements = process.getFlowElements();
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return (StartEvent) elements.stream()
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.filter(flowElement -> flowElement instanceof StartEvent)
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.findFirst().orElse(null);
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}
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}
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