Flowable源码注释(七十四)案例任务活动行为

本文深入探讨了Flowable 6.7.2版本中CaseTaskActivityBehavior的源码注释,通过链接提供了详细注解的GitHub仓库,帮助读者理解流程引擎中案例任务活动的行为。

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

CaseTaskActivityBehavior 案例任务活动行为

/**
 * 案例任务活动行为
 * 使用案例服务任务启动CMMN案例
 *
 * @author Tijs Rademakers
 * @author Joram Barrez
 */
public class CaseTaskActivityBehavior extends AbstractBpmnActivityBehavior implements SubProcessActivityBehavior {
   

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

    private static final long serialVersionUID = 1L;

    @Override
    public void execute(DelegateExecution execution) {
   

        ExecutionEntity executionEntity = (ExecutionEntity) execution;
        CaseServiceTask caseServiceTask = (CaseServiceTask) executionEntity.getCurrentFlowElement();

        CommandContext commandContext = CommandContextUtil.getCommandContext();

        ProcessEngineConfigurationImpl processEngineConfiguration = CommandContextUtil.getProcessEngineConfiguration(commandContext);
        ExecutionEntityManager executionEntityManager = CommandContextUtil.getExecutionEntityManager(commandContext);
        ExpressionManager expressionManager = processEngineConfiguration.getExpressionManager();
        CaseInstanceService caseInstanceService = processEngineConfiguration.getCaseInstanceService();

        // 要使用case service任务,需要在流程引擎配置中提供CaseInstanceService实现
        if (caseInstanceService == null) {
   
            throw new FlowableException("To use the case service task a CaseInstanceService implementation needs to be available in the process engine configuration");
        }

        String businessKey = null;
        if (!StringUtils.isEmpty(caseServiceTask.getBusinessKey())) {
   
            Expression expression = expressionManager.createExpression(caseServiceT
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