SaveAttachmentCmd.java

/* 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 org.activiti.engine.delegate.event.ActivitiEventType;
import org.activiti.engine.delegate.event.impl.ActivitiEventBuilder;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.AttachmentEntity;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.task.Attachment;


/**
 * @author Tom Baeyens
 */
public class SaveAttachmentCmd implements Command<Object>, Serializable {

  private static final long serialVersionUID = 1L;
  protected Attachment attachment;
  
  public SaveAttachmentCmd(Attachment attachment) {
    this.attachment = attachment;
  }

  public Object execute(CommandContext commandContext) {
    AttachmentEntity updateAttachment = commandContext
      .getDbSqlSession()
      .selectById(AttachmentEntity.class, attachment.getId());
    
    updateAttachment.setName(attachment.getName());
    updateAttachment.setDescription(attachment.getDescription());
    
    if(commandContext.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
    	// Forced to fetch the process-instance to associate the right process definition
    	String processDefinitionId = null;
    	String processInstanceId = updateAttachment.getProcessInstanceId();
    	if(updateAttachment.getProcessInstanceId() != null) {
    		ExecutionEntity process = commandContext.getExecutionEntityManager().findExecutionById(processInstanceId);
    		if(process != null) {
    			processDefinitionId = process.getProcessDefinitionId();
    		}
    	}
    	
    	commandContext.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
    			ActivitiEventBuilder.createEntityEvent(ActivitiEventType.ENTITY_UPDATED, attachment, processInstanceId, processInstanceId, processDefinitionId));
    }
    
    return null;
  }
}