/* 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;
/**
* @author Tom Baeyens
* @author Joram Barrez
*/
public class DeleteAttachmentCmd implements Command<Object>, Serializable {
private static final long serialVersionUID = 1L;
protected String attachmentId;
public DeleteAttachmentCmd(String attachmentId) {
this.attachmentId = attachmentId;
}
public Object execute(CommandContext commandContext) {
AttachmentEntity attachment = commandContext
.getDbSqlSession()
.selectById(AttachmentEntity.class, attachmentId);
commandContext
.getDbSqlSession()
.delete(attachment);
if (attachment.getContentId() != null) {
commandContext
.getByteArrayEntityManager()
.deleteByteArrayById(attachment.getContentId());
}
if (attachment.getTaskId()!=null) {
commandContext.getHistoryManager()
.createAttachmentComment(attachment.getTaskId(), attachment.getProcessInstanceId(), attachment.getName(), false);
}
if(commandContext.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
// Forced to fetch the process-instance to associate the right process definition
String processDefinitionId = null;
String processInstanceId = attachment.getProcessInstanceId();
if(attachment.getProcessInstanceId() != null) {
ExecutionEntity process = commandContext.getExecutionEntityManager().findExecutionById(processInstanceId);
if(process != null) {
processDefinitionId = process.getProcessDefinitionId();
}
}
commandContext.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
ActivitiEventBuilder.createEntityEvent(ActivitiEventType.ENTITY_DELETED, attachment, processInstanceId, processInstanceId, processDefinitionId));
}
return null;
}
}