/* 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.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.ActivitiObjectNotFoundException;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.impl.persistence.entity.SignalEventSubscriptionEntity;
import org.activiti.engine.runtime.Execution;
/**
* @author Daniel Meyer
* @author Joram Barrez
*/
public class SignalEventReceivedCmd implements Command<Void> {
protected final String eventName;
protected final String executionId;
protected final Serializable payload;
protected final boolean async;
protected String tenantId;
public SignalEventReceivedCmd(String eventName, String executionId, Map<String, Object> processVariables, String tenantId) {
this.eventName = eventName;
this.executionId = executionId;
if (processVariables != null) {
if (processVariables instanceof Serializable){
this.payload = (Serializable) processVariables;
}
else{
this.payload = new HashMap<String, Object>(processVariables);
}
}
else{
this.payload = null;
}
this.async = false;
this.tenantId = tenantId;
}
public SignalEventReceivedCmd(String eventName, String executionId, boolean async, String tenantId) {
this.eventName = eventName;
this.executionId = executionId;
this.async = async;
this.payload = null;
this.tenantId = tenantId;
}
public Void execute(CommandContext commandContext) {
List<SignalEventSubscriptionEntity> signalEvents = null;
if(executionId == null) {
signalEvents = commandContext.getEventSubscriptionEntityManager()
.findSignalEventSubscriptionsByEventName(eventName, tenantId);
} else {
ExecutionEntity execution = commandContext.getExecutionEntityManager().findExecutionById(executionId);
if (execution == null) {
throw new ActivitiObjectNotFoundException("Cannot find execution with id '" + executionId + "'", Execution.class);
}
if (execution.isSuspended()) {
throw new ActivitiException("Cannot throw signal event '" + eventName
+ "' because execution '" + executionId + "' is suspended");
}
signalEvents = commandContext.getEventSubscriptionEntityManager()
.findSignalEventSubscriptionsByNameAndExecution(eventName, executionId);
if(signalEvents.isEmpty()) {
throw new ActivitiException("Execution '"+executionId+"' has not subscribed to a signal event with name '"+eventName+"'.");
}
}
for (SignalEventSubscriptionEntity signalEventSubscriptionEntity : signalEvents) {
// We only throw the event to globally scoped signals.
// Process instance scoped signals must be thrown within the process itself
if (signalEventSubscriptionEntity.isGlobalScoped()) {
signalEventSubscriptionEntity.eventReceived(payload, async);
}
}
return null;
}
}