Flowable源码注释（七十一）人类任务活动行为类

最新推荐文章于 2024-05-21 11:40:04 发布

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最新推荐文章于 2024-05-21 11:40:04 发布 · 584 阅读

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#flowable #源码注释 #流程引擎

本文深入探讨Flowable 6.7.2中的人类任务活动行为类HumanTaskActivityBehavior。通过源码注释，解析该类在流程引擎中的作用和实现细节，为理解Flowable的工作原理提供帮助。

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

HumanTaskActivityBehavior 人类任务活动行为类

/**
 * 人类任务活动行为
 *
 * @author Joram Barrez
 */
public class HumanTaskActivityBehavior extends TaskActivityBehavior implements PlanItemActivityBehavior, CmmnActivityWithMigrationContextBehavior {
   
   

    protected HumanTask humanTask;

    public HumanTaskActivityBehavior(HumanTask humanTask) {
   
   
        super(humanTask.isBlocking(), humanTask.getBlockingExpression());
        this.humanTask = humanTask;
    }

    @Override
    public void execute(CommandContext commandContext, PlanItemInstanceEntity planItemInstanceEntity) {
   
   
        execute(commandContext, planItemInstanceEntity, null);
    }
    
    @Override
    public void execute(CommandContext commandContext, PlanItemInstanceEntity planItemInstanceEntity, MigrationContext migrationContext) {
   
   
        if (evaluateIsBlocking(planItemInstanceEntity)) {
   
   
            CmmnEngineConfiguration cmmnEngineConfiguration = CommandContextUtil.getCmmnEngineConfiguration(commandContext);
            TaskService taskService = cmmnEngineConfiguration.getTaskServiceConfiguration().getTaskService();
            ExpressionManager expressionManager = CommandContextUtil.getExpressionManager(commandContext);

            TaskEntity taskEntity = taskService.createTask();

            taskEntity.setScopeId(planItemInstanceEntity.getCaseInstanceId());
            taskEntity.setSubScopeId(planItemInstanceEntity.getId());
            taskEntity.setScopeDefinitionId(planItemInstanceEntity.getCaseDefinitionId());
            taskEntity.setScopeType(ScopeTypes.CMMN);
            taskEntity.setTenantId(planItemInstanceEntity.getTenantId());

            // 如果此计划项（任务）属于某个阶段，请设置阶段实例id
            taskEntity.setPropagatedStageInstanceId(planItemInstanceEntity.getStageInstanceId());

            taskEntity.setTaskDefinitionKey(humanTask.getId());

            String taskName = humanTask.getName();
            if (planItemInstanceEntity.getName() != null) {
   
   
                taskName = planItemInstanceEntity.getName();
            }
            
            CreateHumanTaskBeforeContext beforeContext = new CreateHumanTaskBeforeContext(humanTask, planItemInstanceEntity, taskName,
                    humanTask.getDocumentation(), humanTask.getDueDate(), humanTask.getPriority(), humanTask.getCategory(), 
                    humanTask.getFormKey(), humanTask.getAssignee(), humanTask.getOwner(), 
                    humanTask.getCandidateUsers(), humanTask.getCandidateGroups());
            
            if (cmmnEngineConfiguration.getCreateHumanTaskInterceptor() != null) {
   
   
                cmmnEngineConfiguration.getCreateHumanTaskInterceptor().beforeCreateHumanTask(beforeContext);
            }
            
            handleTaskName(planItemInstanceEntity, expressionManager, taskEntity, beforeContext);
            handleTaskDescription(planItemInstanceEntity, expressionManager, taskEntity, beforeContext);
            handleAssignee(planItemInstanceEntity, taskService, expressionManager, taskEntity, beforeContext, migrationContext);
            handleOwner(planItemInstanceEntity, taskService, expressionManager, taskEntity, beforeContext);
            handlePriority(planItemInstanceEntity, expressionManager, taskEntity, beforeContext);
            handleFormKey(planItemInstanceEntity, expressionManager, taskEntity, beforeContext);
            handleDueDate(commandContext, planItemInstanceEntity, expressionManager, taskEntity, beforeContext);
            handleCategory(planItemInstanceEntity, expressionManager, taskEntity, beforeContext);

            TaskHelper.insertTask(taskEntity, true, cmmnEngineConfiguration);
            
            if (cmmnEngineConfiguration.isLoggingSessionEnabled()) {
   
   
                CmmnLoggingSessionUtil.addLoggingData(CmmnLoggingSessionConstants.TYPE_HUMAN_TASK_CREATE, "Human task '" + 
                                taskEntity.getName() + "' created", taskEntity, planItemInstanceEntity, cmmnEngineConfiguration.getObjectMapper());
                
                if (StringUtils.isNotEmpty(taskEntity.getAssignee())) {
   
   
                    ObjectNode loggingNode = CmmnLoggingSessionUtil.fillBasicTaskLoggingData("Set task assignee value to " + 
                            taskEntity.getAssignee(), taskEntity, planItemInstanceEntity, cmmnEngineConfiguration.getObjectMapper());
                    loggingNode.put("taskAssignee", taskEntity.getAssignee());
                    LoggingSessionUtil.addLoggingData(CmmnLoggingSessionConstants.TYPE_HUMAN_TASK_SET_ASSIGNEE, loggingNode, ScopeTypes.CMMN);
                }
                
                if (StringUtils.isNotEmpty(taskEntity