Flowable源码注释（六十三）网关活动行为类（下）

最新推荐文章于 2024-03-02 12:22:18 发布

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最新推荐文章于 2024-03-02 12:22:18 发布 · 669 阅读

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#Flowable #源码注释 #流程引擎

本文深入解析Flowable流程引擎中两种关键的网关活动行为——包容网关和并行网关。通过注释Flowable-6.7.2源码，了解InclusiveGatewayActivityBehavior和ParallelGatewayActivityBehavior的实现细节及其在流程中的作用。

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Flowable-6.7.2 源码注释地址：https://github.com/solojin/flowable-6.7.2-annotated

InclusiveGatewayActivityBehavior 包容网关活动行为类

/**
 * 包容网关活动行为类
 * Implementation of the Inclusive Gateway/OR gateway/inclusive data-based gateway as defined in the BPMN specification.
 *
 * @author Tijs Rademakers
 * @author Tom Van Buskirk
 * @author Joram Barrez
 */
public class InclusiveGatewayActivityBehavior extends GatewayActivityBehavior implements InactiveActivityBehavior {
   
   

    private static final long serialVersionUID = 1L;

    private static final Logger LOGGER = LoggerFactory.getLogger(InclusiveGatewayActivityBehavior.class.getName());

    @Override
    public void execute(DelegateExecution execution) {
   
   
        // 加入包容网关的工作如下：
        // 当执行进入时，它将被停止。
        //
        // 所有未激活的执行都保留在包容性网关中，直到所有可以到达包容性网关的执行都到达它。
        //
        // 在执行更改时重复此检查，直到未激活执行离开网关。

        execution.inactivate();
        executeInclusiveGatewayLogic((ExecutionEntity) execution, false);
    }

    @Override
    public void executeInactive(ExecutionEntity executionEntity) {
   
   
        executeInclusiveGatewayLogic(executionEntity, true);
    }

    protected void executeInclusiveGatewayLogic(ExecutionEntity execution, boolean inactiveCheck) {
   
   
        CommandContext commandContext = Context.getCommandContext();
        ExecutionEntityManager executionEntityManager = CommandContextUtil.getExecutionEntityManager(commandContext);

        lockFirstParentScope(execution);

        Collection<ExecutionEntity> allExecutions = executionEntityManager.findChildExecutionsByProcessInstanceId(execution.getProcessInstanceId());
        Iterator<ExecutionEntity> executionIterator = allExecutions.iterator();
        boolean oneExecutionCanReachGatewayInstance = false;
        while (!oneExecutionCanReachGatewayInstance && executionIterator.hasNext()) {
   
   
            ExecutionEntity executionEntity = executionIterator.next();
            if (!executionEntity.getActivityId().equals(execution.getCurrentActivityId())) {
   
   
                if (ExecutionGraphUtil.isReachable(execution.getProcessDefinitionId(), executionEntity.getActivityId(), execution.getCurrentActivityId())) {
   
   
                    // 在相同的执行路径中检查
                    if (executionEntity.getParentId().equals(