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https://github.com/Alfresco/alfresco-community-repo.git
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Initial Subscription Cervice check-in
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@28425 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Florian Mü
@@ -0,0 +1,386 @@
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/*
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* Copyright (C) 2005-2011 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.repo.subscriptions;
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import java.io.Serializable;
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import java.util.Collections;
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import org.alfresco.model.ContentModel;
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import org.alfresco.query.PagingRequest;
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import org.alfresco.repo.activities.ActivityType;
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import org.alfresco.repo.domain.subscriptions.SubscriptionsDAO;
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import org.alfresco.repo.security.authentication.AuthenticationUtil;
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import org.alfresco.repo.security.permissions.AccessDeniedException;
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import org.alfresco.service.cmr.activities.ActivityService;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.repository.NodeService;
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import org.alfresco.service.cmr.security.PersonService;
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import org.alfresco.service.cmr.subscriptions.PagingFollowingResults;
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import org.alfresco.service.cmr.subscriptions.PagingFollowingResultsImpl;
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import org.alfresco.service.cmr.subscriptions.PagingSubscriptionResults;
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import org.alfresco.service.cmr.subscriptions.PagingSubscriptionResultsImpl;
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import org.alfresco.service.cmr.subscriptions.PrivateSubscriptionListException;
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import org.alfresco.service.cmr.subscriptions.SubscriptionItemTypeEnum;
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import org.alfresco.service.cmr.subscriptions.SubscriptionService;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.json.JSONException;
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import org.json.JSONObject;
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public class SubscriptionServiceImpl implements SubscriptionService
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{
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/** Logger */
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private static Log logger = LogFactory.getLog(SubscriptionServiceImpl.class);
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/** Activity tool */
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private static final String ACTIVITY_TOOL = "subscriptionService";
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/** Activity values */
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private static final String SUB_USER = "user";
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private static final String SUB_USER_TO_FOLLOW = "userToFollow";
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private static final String SUB_NODE = "node";
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protected SubscriptionsDAO subscriptionsDAO;
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protected NodeService nodeService;
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protected PersonService personService;
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protected ActivityService activityService;
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/**
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* Sets the subscriptions DAO.
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*/
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public void setSubscriptionsDAO(SubscriptionsDAO subscriptionsDAO)
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{
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this.subscriptionsDAO = subscriptionsDAO;
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}
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/**
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* Sets the node service.
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*/
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public final void setNodeService(NodeService nodeService)
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{
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this.nodeService = nodeService;
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}
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/**
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* Sets the person service.
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*/
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public final void setPersonService(PersonService personService)
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{
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this.personService = personService;
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}
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/**
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* Sets the activity service.
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*/
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public final void setActivityService(ActivityService activictyService)
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{
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this.activityService = activictyService;
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}
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@SuppressWarnings("unchecked")
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@Override
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public PagingSubscriptionResults getSubscriptions(String userId, SubscriptionItemTypeEnum type,
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PagingRequest pagingRequest)
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{
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if (!subscriptionsEnabled())
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{
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return new PagingSubscriptionResultsImpl(Collections.EMPTY_LIST, false, 0);
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}
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checkRead(userId);
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return subscriptionsDAO.selectSubscriptions(userId, type, pagingRequest);
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}
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@Override
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public int getSubscriptionCount(String userId, SubscriptionItemTypeEnum type)
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{
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if (!subscriptionsEnabled())
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{
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return 0;
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}
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return subscriptionsDAO.countSubscriptions(userId, type);
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}
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@Override
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public void subscribe(String userId, NodeRef node)
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{
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if (!subscriptionsEnabled())
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{
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return;
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}
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checkWrite(userId);
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checkUserNode(node);
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subscriptionsDAO.insertSubscription(userId, node);
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if (userId.equalsIgnoreCase(AuthenticationUtil.getRunAsUser()))
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{
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String activityDataJSON = null;
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try
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{
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JSONObject activityData = new JSONObject();
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activityData.put(SUB_USER, userId);
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activityData.put(SUB_NODE, node.toString());
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activityDataJSON = activityData.toString();
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} catch (JSONException je)
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{
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// log error, subsume exception
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logger.error("Failed to get activity data: " + je);
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}
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activityService.postActivity(ActivityType.SUBSCRIPTIONS_SUBSCRIBE, null, ACTIVITY_TOOL, activityDataJSON);
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}
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}
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@Override
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public void unsubscribe(String userId, NodeRef node)
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{
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if (!subscriptionsEnabled())
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{
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return;
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}
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checkWrite(userId);
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subscriptionsDAO.deleteSubscription(userId, node);
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}
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@Override
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public boolean hasSubscribed(String userId, NodeRef node)
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{
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if (!subscriptionsEnabled())
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{
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return false;
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}
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checkRead(userId);
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return subscriptionsDAO.hasSubscribed(userId, node);
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}
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@SuppressWarnings("unchecked")
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@Override
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public PagingFollowingResults getFollowing(String userId, PagingRequest pagingRequest)
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{
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if (!subscriptionsEnabled())
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{
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return new PagingFollowingResultsImpl(Collections.EMPTY_LIST, false, 0);
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}
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checkRead(userId);
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return subscriptionsDAO.selectFollowing(userId, pagingRequest);
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}
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@SuppressWarnings("unchecked")
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@Override
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public PagingFollowingResults getFollowers(String userId, PagingRequest pagingRequest)
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{
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if (!subscriptionsEnabled())
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{
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return new PagingFollowingResultsImpl(Collections.EMPTY_LIST, false, 0);
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}
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if (userId == null)
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{
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throw new IllegalArgumentException("User Id may not be null!");
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}
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return subscriptionsDAO.selectFollowers(userId, pagingRequest);
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}
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@Override
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public int getFollowersCount(String userId)
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{
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if (!subscriptionsEnabled())
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{
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return 0;
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}
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return subscriptionsDAO.countFollowers(userId);
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}
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@Override
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public int getFollowingCount(String userId)
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{
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if (!subscriptionsEnabled())
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{
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return 0;
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}
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return getSubscriptionCount(userId, SubscriptionItemTypeEnum.USER);
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}
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@Override
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public void follow(String userId, String userToFollow)
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{
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if (!subscriptionsEnabled())
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{
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return;
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}
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checkWrite(userId);
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subscriptionsDAO.insertSubscription(userId, getUserNodeRef(userToFollow));
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if (userId.equalsIgnoreCase(AuthenticationUtil.getRunAsUser()))
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{
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String activityDataJSON = null;
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try
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{
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JSONObject activityData = new JSONObject();
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activityData.put(SUB_USER, userId);
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activityData.put(SUB_USER_TO_FOLLOW, userToFollow);
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activityDataJSON = activityData.toString();
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} catch (JSONException je)
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{
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// log error, subsume exception
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logger.error("Failed to get activity data: " + je);
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}
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activityService.postActivity(ActivityType.SUBSCRIPTIONS_FOLLOW, null, ACTIVITY_TOOL, activityDataJSON);
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}
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}
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@Override
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public void unfollow(String userId, String userToUnfollow)
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{
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if (!subscriptionsEnabled())
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{
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return;
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}
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checkWrite(userId);
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subscriptionsDAO.deleteSubscription(userId, getUserNodeRef(userToUnfollow));
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}
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@Override
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public boolean follows(String userId, String userToFollow)
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{
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if (!subscriptionsEnabled())
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{
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return false;
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}
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checkRead(userId);
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return subscriptionsDAO.hasSubscribed(userId, getUserNodeRef(userToFollow));
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}
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@Override
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public void setSubscriptionListPrivate(String userId, boolean isPrivate)
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{
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checkWrite(userId);
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nodeService.setProperty(getUserNodeRef(userId), ContentModel.PROP_SUBSCRIPTIONS_PRIVATE, isPrivate);
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}
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@Override
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public boolean isSubscriptionListPrivate(String userId)
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{
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if (userId == null)
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{
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throw new IllegalArgumentException("User Id may not be null!");
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}
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Serializable privateList = nodeService.getProperty(getUserNodeRef(userId),
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ContentModel.PROP_SUBSCRIPTIONS_PRIVATE);
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if (privateList == null)
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{
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return false;
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}
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if (privateList instanceof Boolean && !((Boolean) privateList).booleanValue())
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{
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return false;
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}
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return true;
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}
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protected boolean subscriptionsEnabled()
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{
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return true;
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}
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/**
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* Checks if the current user is allowed to get subscription data.
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*/
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protected void checkRead(String userId)
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{
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if (userId == null)
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{
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throw new IllegalArgumentException("User Id may not be null!");
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}
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String currentUser = AuthenticationUtil.getRunAsUser();
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if (currentUser == null)
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{
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throw new IllegalArgumentException("No current user!");
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}
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if (currentUser.equalsIgnoreCase(userId) || currentUser.equalsIgnoreCase(AuthenticationUtil.getAdminUserName())
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|| AuthenticationUtil.isRunAsUserTheSystemUser() || !isSubscriptionListPrivate(userId))
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{
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return;
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}
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throw new PrivateSubscriptionListException("subscription_service.err.private-list");
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}
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/**
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* Checks if the current user is allowed to get change data.
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*/
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protected void checkWrite(String userId)
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{
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if (userId == null)
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{
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throw new IllegalArgumentException("User Id may not be null!");
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}
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String currentUser = AuthenticationUtil.getRunAsUser();
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if (currentUser == null)
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{
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throw new IllegalArgumentException("No current user!");
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}
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if (currentUser.equalsIgnoreCase(userId) || currentUser.equalsIgnoreCase(AuthenticationUtil.getAdminUserName())
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|| AuthenticationUtil.isRunAsUserTheSystemUser())
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{
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return;
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}
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throw new AccessDeniedException("subscription_service.err.write-denied");
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}
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/**
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* Gets the user node ref from the user id.
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*/
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protected NodeRef getUserNodeRef(String userId)
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{
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return personService.getPerson(userId, false);
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}
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/**
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* Checks if the node is a user node and throws an exception if it id not.
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*/
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protected void checkUserNode(NodeRef nodeRef)
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{
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// we only support user-to-user subscriptions in this release
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if (!ContentModel.TYPE_USER.equals(nodeService.getType(nodeRef)))
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{
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throw new IllegalArgumentException("Only user nodes supported!");
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}
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}
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}
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