/*
* Copyright (c) 2010-2011 Lockheed Martin Corporation
*
* 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.eurekastreams.server.persistence.mappers.db;
import org.eurekastreams.server.domain.DomainGroup;
import org.eurekastreams.server.domain.stream.StreamScope.ScopeType;
import org.eurekastreams.server.persistence.mappers.BaseArgDomainMapper;
import org.eurekastreams.server.persistence.mappers.FindByIdMapper;
import org.eurekastreams.server.persistence.mappers.requests.DeleteGroupResponse;
import org.eurekastreams.server.persistence.mappers.requests.FindByIdRequest;
/**
* Deletes a group and.
*/
public class DeleteGroup extends BaseArgDomainMapper<Long, DeleteGroupResponse>
{
/**
* {@link FindByIdMapper}.
*/
private FindByIdMapper<DomainGroup> groupMapper;
/**
* Constructor.
*
* @param inGroupMapper
* {@link FindByIdMapper}.
*/
public DeleteGroup(final FindByIdMapper<DomainGroup> inGroupMapper)
{
groupMapper = inGroupMapper;
}
/**
* Deletes a group.
*
* @param inRequest
* group id.
* @return DeleteGroupResponse
*/
@Override
public DeleteGroupResponse execute(final Long inRequest)
{
DomainGroup group = groupMapper.execute(new FindByIdRequest("DomainGroup", inRequest));
Long groupId = group.getId();
DeleteGroupResponse response = new DeleteGroupResponse(groupId, group.getShortName(), new Long(group
.getStreamScope().getId()));
getEntityManager().createQuery(
"DELETE FROM StreamHashTag WHERE streamEntityUniqueKey = :uniqueKey AND streamScopeType = :type")
.setParameter("uniqueKey", group.getUniqueId()).setParameter("type", ScopeType.GROUP).executeUpdate();
// delete the group hibernate should take care of following since we are deleting via entity manager.
// Hibernate: delete from Group_Capability where domainGroupId=?
// Hibernate: delete from Group_Task where groupId=?
// Hibernate: delete from Group_Coordinators where DomainGroup_id=?
// Hibernate: delete from StreamView_StreamScope where StreamView_id=?
// Hibernate: delete from GroupFollower where followingId=? (this should be gone already).
// Hibernate: delete from DomainGroup where id=? and version=?
// Hibernate: delete from StreamView where id=? and version=?
getEntityManager().remove(group);
return response;
}
}