/*
* 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.action.execution.notification.translator;
import java.util.List;
import org.eurekastreams.server.action.execution.notification.NotificationBatch;
import org.eurekastreams.server.action.execution.notification.NotificationPropertyKeys;
import org.eurekastreams.server.action.request.notification.ActivityNotificationsRequest;
import org.eurekastreams.server.domain.NotificationType;
import org.eurekastreams.server.domain.stream.ActivityDTO;
import org.eurekastreams.server.persistence.mappers.DomainMapper;
import org.eurekastreams.server.search.modelview.PersonModelView;
import org.eurekastreams.server.service.utility.ui.UiUrlBuilder;
/**
* Translates the event of someone posting to a stream to appropriate notifications.
*/
public class PostPersonStreamTranslator implements NotificationTranslator<ActivityNotificationsRequest>
{
/** DAO to get list of followers of a stream. */
private final DomainMapper<Long, List<Long>> followersDAO;
/**
* Constructor.
*
* @param inFollowersDAO
* DAO to get list of followers of a stream.
*/
public PostPersonStreamTranslator(final DomainMapper<Long, List<Long>> inFollowersDAO)
{
followersDAO = inFollowersDAO;
}
/**
* {@inheritDoc}
*/
@Override
public NotificationBatch translate(final ActivityNotificationsRequest inRequest)
{
// NOTE: This code assumes that the DAO returns a list which can be safely altered, specifically that it
// supports removing elements and is not used elsewhere (e.g. stored off).
List<Long> followerIdsToNotify = followersDAO.execute(inRequest.getTargetEntityId());
followerIdsToNotify.remove(inRequest.getActorId());
followerIdsToNotify.remove(inRequest.getTargetEntityId());
NotificationBatch batch = new NotificationBatch();
if (inRequest.getActorId() != inRequest.getTargetEntityId())
{
batch.setRecipient(NotificationType.POST_TO_PERSONAL_STREAM, inRequest.getTargetEntityId());
}
if (!followerIdsToNotify.isEmpty())
{
batch.getRecipients().put(NotificationType.POST_TO_FOLLOWED_STREAM, followerIdsToNotify);
}
if (batch.getRecipients().isEmpty())
{
return null;
}
batch.setProperty(NotificationPropertyKeys.ACTOR, PersonModelView.class, inRequest.getActorId());
batch.setProperty("stream", PersonModelView.class, inRequest.getTargetEntityId());
batch.setProperty("activity", ActivityDTO.class, inRequest.getActivityId());
batch.setPropertyAlias(NotificationPropertyKeys.SOURCE, "stream");
batch.setProperty(NotificationPropertyKeys.URL, UiUrlBuilder.relativeUrlForActivity(inRequest.getActivityId()));
return batch;
}
}