/*
* Copyright (c) 2009-2010 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 java.util.ArrayList;
import java.util.List;
import org.eurekastreams.server.persistence.mappers.BaseArgDomainMapper;
import org.eurekastreams.server.persistence.strategies.DomainGroupQueryStrategy;
import org.eurekastreams.server.search.modelview.DomainGroupModelView;
import org.hibernate.Criteria;
import org.hibernate.criterion.Restrictions;
/**
* Return list of DomainGroupModelViews from DB for ids passed in.
*
*/
public class GetGroupsByIdsDbMapper extends BaseArgDomainMapper<List<Long>, List<DomainGroupModelView>>
{
/**
* Strategy for querying a domain group model view from the database.
*/
private DomainGroupQueryStrategy domainGroupQueryStrategy;
/**
* Constructor.
*
* @param inDomainGroupQueryStrategy
* query strategy for loading {@link DomainGroupModelView}s.
*/
public GetGroupsByIdsDbMapper(final DomainGroupQueryStrategy inDomainGroupQueryStrategy)
{
domainGroupQueryStrategy = inDomainGroupQueryStrategy;
}
/**
* Return list of DomainGroupModelViews from DB for ids passed in.
*
* @param inRequest
* list of group ids.
* @return list of DomainGroupModelViews from DB for ids passed in.
*/
@Override
public List<DomainGroupModelView> execute(final List<Long> inRequest)
{
List<Long> ids = inRequest;
// Checks to see if there's any real work to do
if (ids == null || ids.size() == 0)
{
return new ArrayList<DomainGroupModelView>();
}
Criteria criteria = domainGroupQueryStrategy.getCriteria(getHibernateSession());
criteria.add(Restrictions.in("this.id", ids));
return criteria.list();
}
}