content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.activiti.engine.impl.bpmn.behavior;
  
  import java.util.List;
  import org.activiti.bpmn.model.BoundaryEvent;
  import org.activiti.bpmn.model.Signal;
  import org.activiti.bpmn.model.SignalEventDefinition;
  import org.activiti.engine.delegate.DelegateExecution;
  import org.activiti.engine.delegate.Expression;
  import org.activiti.engine.impl.context.Context;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.EventSubscriptionEntity;
  import org.activiti.engine.impl.persistence.entity.EventSubscriptionEntityManager;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
  import org.activiti.engine.impl.persistence.entity.SignalEventSubscriptionEntity;
  import org.apache.commons.lang3.StringUtils;
  
  /**
  
  
   */
  public class BoundarySignalEventActivityBehavior extends BoundaryEventActivityBehavior {
  
      private static final long serialVersionUID = 1L;
  
      protected SignalEventDefinition signalEventDefinition;
      protected Signal signal;
  
      public BoundarySignalEventActivityBehavior(
          SignalEventDefinition signalEventDefinition,
          Signal signal,
          boolean interrupting
      ) {
          super(interrupting);
          this.signalEventDefinition = signalEventDefinition;
          this.signal = signal;
      }
  
      @Override
      public void execute(DelegateExecution execution) {
          CommandContext commandContext = Context.getCommandContext();
          ExecutionEntity executionEntity = (ExecutionEntity) execution;
  
          String signalName = null;
          if (StringUtils.isNotEmpty(signalEventDefinition.getSignalRef())) {
              signalName = signalEventDefinition.getSignalRef();
          } else {
              Expression signalExpression = commandContext
                  .getProcessEngineConfiguration()
                  .getExpressionManager()
                  .createExpression(signalEventDefinition.getSignalExpression());
              signalName = signalExpression.getValue(execution).toString();
          }
  
          commandContext.getEventSubscriptionEntityManager().insertSignalEvent(signalName, signal, executionEntity);
      }
  
      @Override
      public void trigger(DelegateExecution execution, String triggerName, Object triggerData) {
          ExecutionEntity executionEntity = (ExecutionEntity) execution;
          BoundaryEvent boundaryEvent = (BoundaryEvent) execution.getCurrentFlowElement();
  
          if (boundaryEvent.isCancelActivity()) {
              String eventName = null;
              if (signal != null) {
                  eventName = signal.getName();
              } else {
                  eventName = signalEventDefinition.getSignalRef();
              }
  
              EventSubscriptionEntityManager eventSubscriptionEntityManager =
                  Context.getCommandContext().getEventSubscriptionEntityManager();
              List<EventSubscriptionEntity> eventSubscriptions = executionEntity.getEventSubscriptions();
              for (EventSubscriptionEntity eventSubscription : eventSubscriptions) {
                  if (
                      eventSubscription instanceof SignalEventSubscriptionEntity &&
                      eventSubscription.getEventName().equals(eventName)
                  ) {
                      eventSubscriptionEntityManager.delete(eventSubscription);
                  }
              }
          }
  
          super.trigger(executionEntity, triggerName, triggerData);
      }
  }
  