/*
* 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;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import javax.persistence.Query;
import org.eurekastreams.server.domain.stream.StarredActivity;
import org.eurekastreams.server.persistence.mappers.cache.CacheKeys;
import org.eurekastreams.server.persistence.mappers.stream.CachedDomainMapper;
import org.eurekastreams.server.persistence.mappers.stream.GetStarredActivityIds;
/**
* Insert entry into StarredActivity table.
*
*/
public class InsertStarredActivity extends CachedDomainMapper
{
/**
* Mapper to read starred activities.
*/
private GetStarredActivityIds starredActivitiesMapper;
/**
* Constructor.
*
* @param inStarredActivitiesMapper
* the starred activity read mapper.
*/
public InsertStarredActivity(final GetStarredActivityIds inStarredActivitiesMapper)
{
starredActivitiesMapper = inStarredActivitiesMapper;
}
/**
* Inserts entry into StarredActivity table.
*
* @param inStarredActivity
* the {@link StarredActivity} to insert.
* @return True if successful.
*/
public Boolean execute(final StarredActivity inStarredActivity)
{
Query q = getEntityManager().createQuery(
"FROM StarredActivity where personId=:personId and activityId=:activityId").setParameter("personId",
inStarredActivity.getPersonId()).setParameter("activityId", inStarredActivity.getActivityId());
if (q.getResultList().size() > 0)
{
// already starred
return Boolean.TRUE;
}
this.getEntityManager().persist(inStarredActivity);
// sets in cache.
String key = CacheKeys.STARRED_BY_PERSON_ID + inStarredActivity.getPersonId();
List<Long> starredIds = starredActivitiesMapper.execute(inStarredActivity.getPersonId());
if (starredIds == null)
{
starredIds = new LinkedList<Long>();
}
starredIds.add(inStarredActivity.getActivityId());
Collections.sort(starredIds);
Collections.reverse(starredIds);
getCache().setList(key, starredIds);
return Boolean.TRUE;
}
}