/* 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.cmd;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.impl.event.MessageEventHandler;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.EventSubscriptionEntity;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
/**
* @author Daniel Meyer
* @author Joram Barrez
*/
public class MessageEventReceivedCmd extends NeedsActiveExecutionCmd<Void> {
private static final long serialVersionUID = 1L;
protected final Map<String, Object> processVariables;
protected final String messageName;
public MessageEventReceivedCmd(String messageName, String executionId, Map<String, Object> processVariables) {
super(executionId);
this.messageName = messageName;
this.processVariables = processVariables;
}
protected Void execute(CommandContext commandContext, ExecutionEntity execution) {
if(messageName == null) {
throw new ActivitiException("messageName cannot be null");
}
List<EventSubscriptionEntity> eventSubscriptions = commandContext.getEventSubscriptionManager()
.findEventSubscriptionsByNameAndExecution(MessageEventHandler.EVENT_HANDLER_TYPE, messageName, executionId);
if(eventSubscriptions.isEmpty()) {
throw new ActivitiException("Execution with id '"+executionId+"' does not have a subscription to a message event with name '"+messageName+"'");
}
// there can be only one:
EventSubscriptionEntity eventSubscriptionEntity = eventSubscriptions.get(0);
HashMap<String, Object> payload = null;
if(processVariables != null) {
payload = new HashMap<String, Object>(processVariables);
}
eventSubscriptionEntity.eventReceived(payload, false);
return null;
}
}