/*
* 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 java.util.List;
import javax.persistence.Query;
import org.eurekastreams.server.action.request.SharedResourceRequest;
import org.eurekastreams.server.domain.stream.SharedResource;
import org.eurekastreams.server.domain.stream.StreamScope;
import org.eurekastreams.server.domain.stream.StreamScope.ScopeType;
import org.eurekastreams.server.persistence.mappers.BaseArgDomainMapper;
/**
* DB Mapper to get a shared resource by unique key.
*/
public class FindOrInsertSharedResourceByUniqueKeyDbMapper extends
BaseArgDomainMapper<SharedResourceRequest, SharedResource>
{
/**
* Find or create a shared resource by type and key.
*
* @param inSharedResourceRequest
* a SharedResource to use as a request object, containing the resource type and unique key - unique key
* is lowercased
* @return the existing resource or newly inserted one
*/
@SuppressWarnings("unchecked")
@Override
public SharedResource execute(final SharedResourceRequest inSharedResourceRequest)
{
if (inSharedResourceRequest.getUniqueKey() == null)
{
return null;
}
String uniqueKey = inSharedResourceRequest.getUniqueKey().toLowerCase();
Query q = getEntityManager().createQuery("FROM SharedResource WHERE uniqueKey = :uniqueKey");
q.setParameter("uniqueKey", uniqueKey);
List<SharedResource> resources = q.getResultList();
if (resources == null || resources.size() == 0)
{
SharedResource sr = new SharedResource();
sr.setUniqueKey(uniqueKey);
// find or create the StreamScope
List<StreamScope> scopes = getEntityManager().createQuery(
"From StreamScope WHERE scopeType=:scopeType AND uniqueKey=:uniqueKey").setParameter("scopeType",
ScopeType.RESOURCE).setParameter("uniqueKey", uniqueKey).getResultList();
if (scopes.size() == 1)
{
sr.setStreamScope(scopes.get(0));
}
else
{
sr.setStreamScope(new StreamScope(ScopeType.RESOURCE, uniqueKey));
}
getEntityManager().persist(sr);
if (sr.getStreamScope().getDestinationEntityId() == null)
{
sr.getStreamScope().setDestinationEntityId(sr.getId());
}
return sr;
}
return resources.get(0);
}
}