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.spring.integration;
  
  import org.activiti.engine.ProcessEngine;
  import org.springframework.messaging.Message;
  import org.springframework.messaging.MessageHandler;
  import org.springframework.messaging.MessagingException;
  
  /**
   * Spring Integration Java Configuration DSL integration for Activiti.
   *
  
   */
  public class Activiti {
  
      /**
       * This is the component that you'll use in your Spring Integration
       * {@link org.springframework.integration.dsl.IntegrationFlow}.
       */
      public static ActivitiInboundGateway inboundGateway(ProcessEngine processEngine, String... varsToPreserve) {
          return new ActivitiInboundGateway(processEngine, varsToPreserve);
      }
  
      /**
       * This is the bean to expose and then reference
       * from your Activiti BPMN flow in an expression.
       */
      public static IntegrationActivityBehavior inboundGatewayActivityBehavior(ActivitiInboundGateway gateway) {
          return new IntegrationActivityBehavior(gateway);
      }
  
      /**
       * Any message that enters this {@link org.springframework.messaging.MessageHandler}
       * containing a {@code executionId} parameter will trigger a
       * {@link org.activiti.engine.RuntimeService#signalEventReceived(String)}.
       */
      public static MessageHandler signallingMessageHandler(final ProcessEngine processEngine) {
          return new MessageHandler() {
              @Override
              public void handleMessage(Message<?> message) throws MessagingException {
                  String executionId = message.getHeaders().containsKey("executionId")
                      ? (String) message.getHeaders().get("executionId")
                      : (String) null;
  
                  if (null != executionId) processEngine.getRuntimeService().trigger(executionId);
              }
          };
      }
  }
  