/*
* 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.stream;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.logging.Log;
import org.eurekastreams.commons.logging.LogFactory;
import org.eurekastreams.server.domain.EntityType;
import org.eurekastreams.server.domain.stream.Activity;
import org.eurekastreams.server.domain.stream.StreamScope.ScopeType;
import org.eurekastreams.server.persistence.mappers.DomainMapper;
import org.eurekastreams.server.persistence.mappers.cache.CacheKeys;
import org.eurekastreams.server.persistence.mappers.db.GetOrgShortNamesByIdsMapper;
import org.eurekastreams.server.search.modelview.PersonModelView;
/**
* Adds data to the cache for a newly created activity.
*/
public class PostCachedActivity extends CachedDomainMapper
{
/**
* Logger.
*/
private final Log log = LogFactory.make();
/**
* Mapper to get followers of a person.
*/
private final DomainMapper<Long, List<Long>> personFollowersMapper;
/**
* Mapper to get personmodelview from an accountid.
*/
private final DomainMapper<String, PersonModelView> getPersonModelViewByAccountIdMapper;
/**
* mapper to get all parent org ids for an org id.
*/
private DomainMapper<Long, List<Long>> parentOrgIdsMapper;
/**
* Local instance of the {@link GetDomainGroupsByShortNames} mapper.
*/
private final GetDomainGroupsByShortNames bulkDomainGroupsByShortNameMapper;
/**
* Mapper to get the short names from org ids.
*/
private final GetOrgShortNamesByIdsMapper orgShortNamesFromIdsMapper;
/**
* Constructor.
*
* @param inPersonFollowersMapper
* person follower mapper.
* @param inGetPersonModelViewByAccountIdMapper
* Mapper to get personmodelview from an accountid.
* @param inParentOrgIdsMapper
* ids for parent orgs mapper.
* @param inBulkDomainGroupsByShortNameMapper
* groups by short names mapper.
* @param inOrgShortNamesFromIdsMapper
* mapper to get org shortnames from ids
*/
public PostCachedActivity(final DomainMapper<Long, List<Long>> inPersonFollowersMapper,
final DomainMapper<String, PersonModelView> inGetPersonModelViewByAccountIdMapper,
final DomainMapper<Long, List<Long>> inParentOrgIdsMapper,
final GetDomainGroupsByShortNames inBulkDomainGroupsByShortNameMapper,
final GetOrgShortNamesByIdsMapper inOrgShortNamesFromIdsMapper)
{
personFollowersMapper = inPersonFollowersMapper;
getPersonModelViewByAccountIdMapper = inGetPersonModelViewByAccountIdMapper;
parentOrgIdsMapper = inParentOrgIdsMapper;
bulkDomainGroupsByShortNameMapper = inBulkDomainGroupsByShortNameMapper;
orgShortNamesFromIdsMapper = inOrgShortNamesFromIdsMapper;
}
/**
* Adds a new item in cache for the activity itself and adds the id to all necessary composite stream activity id
* lists.
*
* @param activity
* the activity to be added.
*/
public void execute(final Activity activity)
{
ScopeType type = activity.getRecipientStreamScope().getScopeType();
String recipientUniqueKey = activity.getRecipientStreamScope().getUniqueKey();
long activityId = activity.getId();
Long parentOrgId = null;
if (type == ScopeType.PERSON)
{
PersonModelView person = getPersonModelViewByAccountIdMapper.execute(recipientUniqueKey);
parentOrgId = person.getParentOrganizationId();
updateActivitiesByFollowingCacheLists(person.getEntityId(), activityId);
}
else if (type == ScopeType.GROUP)
{
parentOrgId = bulkDomainGroupsByShortNameMapper.execute(Arrays.asList(recipientUniqueKey)).get(0)
.getParentOrganizationId();
}
else if (type == ScopeType.RESOURCE && activity.getActorType() == EntityType.PERSON)
{
if (activity.getShowInStream())
{
PersonModelView person = getPersonModelViewByAccountIdMapper.execute(activity.getActorId());
parentOrgId = person.getParentOrganizationId();
updateActivitiesByFollowingCacheLists(person.getEntityId(), activityId);
}
}
else
{
throw new RuntimeException("Unexpected Activity destination stream type: " + type);
}
if (activity.getSharedLink() != null)
{
// this has a shared link - add this activity id to the top of the shared resource's stream in cache
log.info("Adding activity with a shared resource (id:" + activity.getSharedLink().getStreamScope().getId()
+ ") to the top of the shared resource's cached activity stream.");
getCache()
.addToTopOfList(
CacheKeys.ENTITY_STREAM_BY_SCOPE_ID + activity.getSharedLink().getStreamScope().getId(),
activityId);
}
if (activity.getShowInStream())
{
// add to everyone list
log.trace("Adding activity id " + activityId + " into everyone activity list.");
getCache().addToTopOfList(CacheKeys.EVERYONE_ACTIVITY_IDS, activityId);
// climb up the tree, adding activity to each org
for (String orgShortName : getAllParentOrgShortNames(parentOrgId))
{
log.trace("Adding activity id " + activityId + " to organization cache list " + orgShortName);
getCache().addToTopOfList(CacheKeys.ACTIVITY_IDS_FOR_ORG_BY_SHORTNAME_RECURSIVE + orgShortName,
activityId);
}
}
}
/**
* Update the Activities by following cache lists when a stream.
*
* @param inPersonId
* person id.
* @param inActivityId
* activity id.
*/
private void updateActivitiesByFollowingCacheLists(final long inPersonId, final long inActivityId)
{
List<Long> followers = personFollowersMapper.execute(inPersonId);
for (Long follower : followers)
{
getCache().addToTopOfList(CacheKeys.ACTIVITIES_BY_FOLLOWING + follower, inActivityId);
}
}
/**
* Returns all parent org short names up the tree.
*
* @param inOrgId
* The id of the org.
* @return all parent org ids up the tree
*/
private List<String> getAllParentOrgShortNames(final Long inOrgId)
{
// gets the org ids of all org parents of the activity's parent org
List<Long> parentIds = parentOrgIdsMapper.execute(inOrgId);
parentIds.add(inOrgId);
return orgShortNamesFromIdsMapper.execute(parentIds);
}
}