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 java.util.Map;
  import java.util.Optional;
  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.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 IntermediateThrowSignalEventActivityBehavior extends AbstractBpmnActivityBehavior {
  
      private static final long serialVersionUID = 1L;
  
      protected final SignalEventDefinition signalEventDefinition;
      protected String signalEventName;
      protected String signalExpression;
      protected boolean processInstanceScope;
  
      public IntermediateThrowSignalEventActivityBehavior(SignalEventDefinition signalEventDefinition, Signal signal) {
          if (signal != null) {
              signalEventName = signal.getName();
              if (Signal.SCOPE_PROCESS_INSTANCE.equals(signal.getScope())) {
                  this.processInstanceScope = true;
              }
          } else if (StringUtils.isNotEmpty(signalEventDefinition.getSignalRef())) {
              signalEventName = signalEventDefinition.getSignalRef();
          } else {
              signalExpression = signalEventDefinition.getSignalExpression();
          }
  
          this.signalEventDefinition = signalEventDefinition;
      }
  
      public void execute(DelegateExecution execution) {
          CommandContext commandContext = Context.getCommandContext();
  
          String eventSubscriptionName = null;
          if (signalEventName != null) {
              eventSubscriptionName = signalEventName;
          } else {
              Expression expressionObject = commandContext
                  .getProcessEngineConfiguration()
                  .getExpressionManager()
                  .createExpression(signalExpression);
              eventSubscriptionName = expressionObject.getValue(execution).toString();
          }
  
          EventSubscriptionEntityManager eventSubscriptionEntityManager =
              commandContext.getEventSubscriptionEntityManager();
          List<SignalEventSubscriptionEntity> subscriptionEntities = null;
          if (processInstanceScope) {
              subscriptionEntities =
                  eventSubscriptionEntityManager.findSignalEventSubscriptionsByProcessInstanceAndEventName(
                      execution.getProcessInstanceId(),
                      eventSubscriptionName
                  );
          } else {
              subscriptionEntities = eventSubscriptionEntityManager.findSignalEventSubscriptionsByEventName(
                  eventSubscriptionName,
                  execution.getTenantId()
              );
          }
  
          for (SignalEventSubscriptionEntity signalEventSubscriptionEntity : subscriptionEntities) {
              Map<String, Object> signalVariables = Optional.ofNullable(execution.getVariables())
                  .filter(it -> !it.isEmpty())
                  .orElse(null);
  
              eventSubscriptionEntityManager.eventReceived(
                  signalEventSubscriptionEntity,
                  signalVariables,
                  signalEventDefinition.isAsync()
              );
          }
  
          Context.getAgenda().planTakeOutgoingSequenceFlowsOperation((ExecutionEntity) execution, true);
      }
  }
  