/* 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.InputStream;
import java.io.Serializable;
import org.activiti.bpmn.converter.BpmnXMLConverter;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.engine.ActivitiIllegalArgumentException;
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.ProcessDefinitionEntity;
import org.activiti.engine.impl.persistence.entity.ResourceEntity;
import org.activiti.engine.impl.util.io.BytesStreamSource;
import org.activiti.engine.repository.Deployment;
/**
* @author Joram Barrez
*/
public class GetBpmnModelCmd implements Command<BpmnModel>, Serializable {
private static final long serialVersionUID = 8167762371289445046L;
protected String processDefinitionId;
public GetBpmnModelCmd(String processDefinitionId) {
this.processDefinitionId = processDefinitionId;
}
public BpmnModel execute(CommandContext commandContext) {
if (processDefinitionId == null) {
throw new ActivitiIllegalArgumentException("processDefinitionId is null");
}
// Find the bpmn 2.0 xml resource name which is stored on the process definition
ProcessDefinitionEntity processDefinitionEntity = commandContext
.getProcessDefinitionEntityManager()
.findProcessDefinitionById(processDefinitionId);
if (processDefinitionEntity == null) {
throw new ActivitiObjectNotFoundException("Process definition does not exist: " + processDefinitionId, ProcessDefinitionEntity.class);
}
// Fetch the resource
String resourceName = processDefinitionEntity.getResourceName();
ResourceEntity resource = commandContext.getResourceEntityManager()
.findResourceByDeploymentIdAndResourceName(processDefinitionEntity.getDeploymentId(), resourceName);
if (resource == null) {
if (commandContext.getDeploymentEntityManager().findDeploymentById(processDefinitionEntity.getDeploymentId()) == null) {
throw new ActivitiObjectNotFoundException("deployment for process definition does not exist: "
+ processDefinitionEntity.getDeploymentId(), Deployment.class);
} else {
throw new ActivitiObjectNotFoundException("no resource found with name '" + resourceName
+ "' in deployment '" + processDefinitionEntity.getDeploymentId() + "'", InputStream.class);
}
}
// Convert the bpmn 2.0 xml to a bpmn model
BpmnXMLConverter bpmnXMLConverter = new BpmnXMLConverter();
return bpmnXMLConverter.convertToBpmnModel(new BytesStreamSource(resource.getBytes()), false, false); // no need to validate schema, it was already validated on deploy
}
}