Flowable源码注释（六十二）网关活动行为类（上）

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已于 2022-03-09 21:06:48 修改 · 825 阅读

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#flowable #源码注释 #流程引擎

于 2022-03-09 20:58:29 首次发布

本文深入探讨Flowable流程引擎中网关活动的行为，包括GatewayActivityBehavior抽象类以及 ExclusiveGatewayActivityBehavior 和 EventBasedGatewayActivityBehavior 的实现细节。通过源码注释，帮助理解流程控制的关键逻辑。

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

GatewayActivityBehavior 网关活动行为抽象类

/**
 * 网关活动行为抽象类
 * 用于所有网关活动实现的超类。
 * 
 * @author Joram Barrez
 */
public abstract class GatewayActivityBehavior extends FlowNodeActivityBehavior {
   
   

    private static final long serialVersionUID = 1L;

    protected void lockFirstParentScope(DelegateExecution execution) {
   
   

        ExecutionEntityManager executionEntityManager = CommandContextUtil.getExecutionEntityManager();

        boolean found = false;
        ExecutionEntity parentScopeExecution = null;
        ExecutionEntity currentExecution = (ExecutionEntity) execution;
        while (!found && currentExecution != null && currentExecution.getParentId() != null) {
   
   
            parentScopeExecution = executionEntityManager.findById(currentExecution.getParentId());
            if (parentScopeExecution != null && parentScopeExecution.isScope()) {
   
   
                found = true;
            }
            currentExecution = parentScopeExecution;
        }

        parentScopeExecution.forceUpdate();
    }

}

ExclusiveGatewayActivityBehavior 独占网关活动行为类

/**
 * 独占网关活动行为类
 * 实现BPMN规范中定义的独占网关/XOR网关/基于数据

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