/* 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.Map;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.deploy.DeploymentCache;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.impl.persistence.entity.MessageEventSubscriptionEntity;
import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity;
import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.activiti.engine.runtime.ProcessInstance;
/**
* @author Daniel Meyer
*/
public class StartProcessInstanceByMessageCmd implements Command<ProcessInstance> {
protected final String messageName;
protected final String businessKey;
protected final Map<String, Object> processVariables;
public StartProcessInstanceByMessageCmd(String messageName, String businessKey, Map<String, Object> processVariables) {
this.messageName = messageName;
this.businessKey = businessKey;
this.processVariables = processVariables;
}
public ProcessInstance execute(CommandContext commandContext) {
if(messageName == null) {
throw new ActivitiException("Cannot start process instance by message: message name is null");
}
MessageEventSubscriptionEntity messageEventSubscription = commandContext.getEventSubscriptionManager()
.findMessageStartEventSubscriptionByName(messageName);
if(messageEventSubscription == null) {
throw new ActivitiException("Cannot start process instance by message: no subscription to message with name '"+messageName+"' found.");
}
String processDefinitionId = messageEventSubscription.getConfiguration();
if(processDefinitionId == null) {
throw new ActivitiException("Cannot start process instance by message: subscription to message with name '"+messageName+"' is not a message start event.");
}
DeploymentCache deploymentCache = Context
.getProcessEngineConfiguration()
.getDeploymentCache();
ProcessDefinitionEntity processDefinition = deploymentCache.findDeployedProcessDefinitionById(processDefinitionId);
if (processDefinition == null) {
throw new ActivitiException("No process definition found for id '" + processDefinitionId + "'");
}
ActivityImpl startActivity = processDefinition.findActivity(messageEventSubscription.getActivityId());
ExecutionEntity processInstance = processDefinition.createProcessInstance(businessKey, startActivity);
if (processVariables != null) {
processInstance.setVariables(processVariables);
}
processInstance.start();
return processInstance;
}
}