Java Code Examples for org.activiti.engine.impl.el.ExpressionManager#createExpression()

public void completing(DelegateExecution execution, DelegateExecution subProcessInstance) throws Exception {
  // only data. no control flow available on this execution.

  ExpressionManager expressionManager = Context.getProcessEngineConfiguration().getExpressionManager();

  // copy process variables
  ExecutionEntity executionEntity = (ExecutionEntity) execution;
  CallActivity callActivity = (CallActivity) executionEntity.getCurrentFlowElement();
  for (IOParameter ioParameter : callActivity.getOutParameters()) {
    Object value = null;
    if (StringUtils.isNotEmpty(ioParameter.getSourceExpression())) {
      Expression expression = expressionManager.createExpression(ioParameter.getSourceExpression().trim());
      value = expression.getValue(subProcessInstance);

    } else {
      value = subProcessInstance.getVariable(ioParameter.getSource());
    }
    execution.setVariable(ioParameter.getTarget(), value);
  }
}
 

protected AbstractDataAssociation createDataInputAssociation(DataAssociation dataAssociationElement) {
  if (dataAssociationElement.getAssignments().isEmpty()) {
    return new MessageImplicitDataInputAssociation(dataAssociationElement.getSourceRef(), dataAssociationElement.getTargetRef());
  } else {
    SimpleDataInputAssociation dataAssociation = new SimpleDataInputAssociation(dataAssociationElement.getSourceRef(), dataAssociationElement.getTargetRef());
    ExpressionManager expressionManager = Context.getProcessEngineConfiguration().getExpressionManager();
    
    for (org.activiti.bpmn.model.Assignment assignmentElement : dataAssociationElement.getAssignments()) {
      if (StringUtils.isNotEmpty(assignmentElement.getFrom()) && StringUtils.isNotEmpty(assignmentElement.getTo())) {
        Expression from = expressionManager.createExpression(assignmentElement.getFrom());
        Expression to = expressionManager.createExpression(assignmentElement.getTo());
        Assignment assignment = new Assignment(from, to);
        dataAssociation.addAssignment(assignment);
      }
    }
    return dataAssociation;
  }
}
 

/**
 * Creates an {@link Expression} for the {@link FieldExtension}.
 */
public static Expression createExpressionForField(FieldExtension fieldExtension) {
  if (StringUtils.isNotEmpty(fieldExtension.getExpression())) {
    ExpressionManager expressionManager = Context.getProcessEngineConfiguration().getExpressionManager();
    return expressionManager.createExpression(fieldExtension.getExpression());
  } else {
    return new FixedValue(fieldExtension.getStringValue());
  }
}
 

public void parseConfiguration(List<org.activiti.bpmn.model.FormProperty> formProperties, String formKey, DeploymentEntity deployment, ProcessDefinition processDefinition) {
  this.deploymentId = deployment.getId();

  ExpressionManager expressionManager = Context.getProcessEngineConfiguration().getExpressionManager();

  if (StringUtils.isNotEmpty(formKey)) {
    this.formKey = expressionManager.createExpression(formKey);
  }

  FormTypes formTypes = Context.getProcessEngineConfiguration().getFormTypes();

  for (org.activiti.bpmn.model.FormProperty formProperty : formProperties) {
    FormPropertyHandler formPropertyHandler = new FormPropertyHandler();
    formPropertyHandler.setId(formProperty.getId());
    formPropertyHandler.setName(formProperty.getName());

    AbstractFormType type = formTypes.parseFormPropertyType(formProperty);
    formPropertyHandler.setType(type);
    formPropertyHandler.setRequired(formProperty.isRequired());
    formPropertyHandler.setReadable(formProperty.isReadable());
    formPropertyHandler.setWritable(formProperty.isWriteable());
    formPropertyHandler.setVariableName(formProperty.getVariable());

    if (StringUtils.isNotEmpty(formProperty.getExpression())) {
      Expression expression = expressionManager.createExpression(formProperty.getExpression());
      formPropertyHandler.setVariableExpression(expression);
    }

    if (StringUtils.isNotEmpty(formProperty.getDefaultExpression())) {
      Expression defaultExpression = expressionManager.createExpression(formProperty.getDefaultExpression());
      formPropertyHandler.setDefaultExpression(defaultExpression);
    }

    formPropertyHandlers.add(formPropertyHandler);
  }
}
 

protected AbstractDataAssociation createDataOutputAssociation(DataAssociation dataAssociationElement) {
  if (StringUtils.isNotEmpty(dataAssociationElement.getSourceRef())) {
    return new MessageImplicitDataOutputAssociation(dataAssociationElement.getTargetRef(), dataAssociationElement.getSourceRef());
  } else {
    ExpressionManager expressionManager = Context.getProcessEngineConfiguration().getExpressionManager();
    Expression transformation = expressionManager.createExpression(dataAssociationElement.getTransformation());
    AbstractDataAssociation dataOutputAssociation = new TransformationDataOutputAssociation(null, dataAssociationElement.getTargetRef(), transformation);
    return dataOutputAssociation;
  }
}
 

@Override
protected void executeParse(BpmnParse bpmnParse, SequenceFlow sequenceFlow) {

    ScopeImpl scope = bpmnParse.getCurrentScope();

    ActivityImpl sourceActivity = scope.findActivity(sequenceFlow.getSourceRef());
    ActivityImpl destinationActivity = scope.findActivity(sequenceFlow.getTargetRef());

    Expression skipExpression;
    if (StringUtils.isNotEmpty(sequenceFlow.getSkipExpression())) {
        ExpressionManager expressionManager = bpmnParse.getExpressionManager();
        skipExpression = expressionManager.createExpression(sequenceFlow.getSkipExpression());
    } else {
        skipExpression = null;
    }

    TransitionImpl transition = sourceActivity.createOutgoingTransition(sequenceFlow.getId(), skipExpression);
    bpmnParse.getSequenceFlows().put(sequenceFlow.getId(), transition);
    transition.setProperty("name", sequenceFlow.getName());
    transition.setProperty("documentation", sequenceFlow.getDocumentation());
    transition.setDestination(destinationActivity);

    if (StringUtils.isNotEmpty(sequenceFlow.getConditionExpression())) {
        Condition expressionCondition = new UelExpressionCondition(sequenceFlow.getConditionExpression());
        transition.setProperty(PROPERTYNAME_CONDITION_TEXT, sequenceFlow.getConditionExpression());
        transition.setProperty(PROPERTYNAME_CONDITION, expressionCondition);
    }

    createExecutionListenersOnTransition(bpmnParse, sequenceFlow.getExecutionListeners(), transition);

}
 

public void doSkip(DelegateTask delegateTask) {
    delegateTask.getExecution().setVariableLocal(
            "_ACTIVITI_SKIP_EXPRESSION_ENABLED", true);

    TaskDefinition taskDefinition = ((TaskEntity) delegateTask)
            .getTaskDefinition();
    ExpressionManager expressionManager = Context
            .getProcessEngineConfiguration().getExpressionManager();
    Expression expression = expressionManager
            .createExpression("${_ACTIVITI_SKIP_EXPRESSION_ENABLED}");
    taskDefinition.setSkipExpression(expression);
}
 

@Override
public void parseConfiguration(List<org.flowable.bpmn.model.FormProperty> formProperties, String formKey, DeploymentEntity deployment, ProcessDefinition processDefinition) {
    this.deploymentId = deployment.getId();

    ExpressionManager expressionManager = Context
            .getProcessEngineConfiguration()
            .getExpressionManager();

    if (StringUtils.isNotEmpty(formKey)) {
        this.formKey = expressionManager.createExpression(formKey);
    }

    FormTypes formTypes = Context
            .getProcessEngineConfiguration()
            .getFormTypes();

    for (org.flowable.bpmn.model.FormProperty formProperty : formProperties) {
        FormPropertyHandler formPropertyHandler = new FormPropertyHandler();
        formPropertyHandler.setId(formProperty.getId());
        formPropertyHandler.setName(formProperty.getName());

        AbstractFormType type = formTypes.parseFormPropertyType(formProperty);
        formPropertyHandler.setType(type);
        formPropertyHandler.setRequired(formProperty.isRequired());
        formPropertyHandler.setReadable(formProperty.isReadable());
        formPropertyHandler.setWritable(formProperty.isWriteable());
        formPropertyHandler.setVariableName(formProperty.getVariable());

        if (StringUtils.isNotEmpty(formProperty.getExpression())) {
            Expression expression = expressionManager.createExpression(formProperty.getExpression());
            formPropertyHandler.setVariableExpression(expression);
        }

        if (StringUtils.isNotEmpty(formProperty.getDefaultExpression())) {
            Expression defaultExpression = expressionManager.createExpression(formProperty.getDefaultExpression());
            formPropertyHandler.setDefaultExpression(defaultExpression);
        }

        formPropertyHandlers.add(formPropertyHandler);
    }
}
 

protected TimerDeclarationImpl createTimer(BpmnParse bpmnParse, TimerEventDefinition timerEventDefinition, ScopeImpl timerActivity, String jobHandlerType) {
    TimerDeclarationType type = null;
    Expression expression = null;
    Expression endDate = null;
    Expression calendarName = null;
    ExpressionManager expressionManager = bpmnParse.getExpressionManager();
    if (StringUtils.isNotEmpty(timerEventDefinition.getTimeDate())) {
        // TimeDate
        type = TimerDeclarationType.DATE;
        expression = expressionManager.createExpression(timerEventDefinition.getTimeDate());
    } else if (StringUtils.isNotEmpty(timerEventDefinition.getTimeCycle())) {
        // TimeCycle
        type = TimerDeclarationType.CYCLE;
        expression = expressionManager.createExpression(timerEventDefinition.getTimeCycle());
        // support for endDate
        if (StringUtils.isNotEmpty(timerEventDefinition.getEndDate())) {
            endDate = expressionManager.createExpression(timerEventDefinition.getEndDate());
        }
    } else if (StringUtils.isNotEmpty(timerEventDefinition.getTimeDuration())) {
        // TimeDuration
        type = TimerDeclarationType.DURATION;
        expression = expressionManager.createExpression(timerEventDefinition.getTimeDuration());
    }

    if (StringUtils.isNotEmpty(timerEventDefinition.getCalendarName())) {
        calendarName = expressionManager.createExpression(timerEventDefinition.getCalendarName());
    }

    // neither date, cycle or duration configured!
    if (expression == null) {
        LOGGER.warn("Timer needs configuration (either timeDate, timeCycle or timeDuration is needed) ({})", timerActivity.getId());
    }

    String jobHandlerConfiguration = timerActivity.getId();

    if (jobHandlerType.equalsIgnoreCase(TimerExecuteNestedActivityJobHandler.TYPE) ||
            jobHandlerType.equalsIgnoreCase(TimerCatchIntermediateEventJobHandler.TYPE) ||
            jobHandlerType.equalsIgnoreCase(TimerStartEventJobHandler.TYPE)) {
        jobHandlerConfiguration = TimerStartEventJobHandler.createConfiguration(timerActivity.getId(), endDate, calendarName);
    }

    // Parse the timer declaration
    // TODO move the timer declaration into the bpmn activity or next to the
    // TimerSession
    TimerDeclarationImpl timerDeclaration = new TimerDeclarationImpl(expression, type, jobHandlerType, endDate, calendarName);
    timerDeclaration.setJobHandlerConfiguration(jobHandlerConfiguration);

    timerDeclaration.setExclusive(true);
    return timerDeclaration;
}
 

public void onCreate(DelegateTask delegateTask) throws Exception {
    String initiatorId = Authentication.getAuthenticatedUserId();

    if (initiatorId == null) {
        return;
    }

    String assignee = delegateTask.getAssignee();

    if (assignee == null) {
        return;
    }

    if (!initiatorId.equals(assignee)) {
        return;
    }

    PvmActivity targetActivity = this.findFirstActivity(delegateTask
            .getProcessDefinitionId());
    logger.debug("targetActivity : {}", targetActivity);

    if (!targetActivity.getId().equals(
            delegateTask.getExecution().getCurrentActivityId())) {
        return;
    }

    logger.debug("auto complete first task : {}", delegateTask);

    for (IdentityLink identityLink : delegateTask.getCandidates()) {
        String userId = identityLink.getUserId();
        String groupId = identityLink.getGroupId();

        if (userId != null) {
            delegateTask.deleteCandidateUser(userId);
        }

        if (groupId != null) {
            delegateTask.deleteCandidateGroup(groupId);
        }
    }

    // 对提交流程的任务进行特殊处理
    HumanTaskDTO humanTaskDto = humanTaskConnector
            .findHumanTaskByTaskId(delegateTask.getId());
    humanTaskDto.setCatalog(HumanTaskConstants.CATALOG_START);
    humanTaskConnector.saveHumanTask(humanTaskDto);

    // ((TaskEntity) delegateTask).complete();
    // Context.getCommandContext().getHistoryManager().recordTaskId((TaskEntity) delegateTask);
    // Context.getCommandContext().getHistoryManager().recordTaskId((TaskEntity) delegateTask);
    // new CompleteTaskWithCommentCmd(delegateTask.getId(), null, "发起流程")
    // .execute(Context.getCommandContext());

    // 因为recordTaskId()会判断endTime，而complete以后会导致endTime!=null，
    // 所以才会出现record()放在complete后面导致taskId没记录到historyActivity里的情况
    delegateTask.getExecution().setVariableLocal(
            "_ACTIVITI_SKIP_EXPRESSION_ENABLED", true);

    TaskDefinition taskDefinition = ((TaskEntity) delegateTask)
            .getTaskDefinition();
    ExpressionManager expressionManager = Context
            .getProcessEngineConfiguration().getExpressionManager();
    Expression expression = expressionManager
            .createExpression("${_ACTIVITI_SKIP_EXPRESSION_ENABLED}");
    taskDefinition.setSkipExpression(expression);
}