001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl-2.1.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Thomas Roger <troger@nuxeo.com>
016 */
017
018package org.nuxeo.ecm.activity;
019
020import java.io.Serializable;
021import java.util.ArrayList;
022import java.util.Collection;
023import java.util.HashMap;
024import java.util.List;
025import java.util.Locale;
026import java.util.Map;
027import java.util.Set;
028
029import org.nuxeo.common.utils.StringUtils;
030import org.nuxeo.ecm.core.api.CoreSession;
031import org.nuxeo.ecm.core.api.IterableQueryResult;
032import org.nuxeo.runtime.api.Framework;
033
034/**
035 * Default implementation of {@link ActivitiesList}.
036 *
037 * @author <a href="mailto:troger@nuxeo.com">Thomas Roger</a>
038 * @since 5.5
039 */
040public class ActivitiesListImpl extends ArrayList<Activity> implements ActivitiesList {
041
042    private static final long serialVersionUID = 1L;
043
044    public ActivitiesListImpl() {
045        super();
046    }
047
048    public ActivitiesListImpl(Collection<? extends Activity> c) {
049        super(c);
050    }
051
052    @Override
053    public ActivitiesList filterActivities(CoreSession session) {
054        ActivitiesList filteredActivities = new ActivitiesListImpl(this);
055
056        Map<String, List<Activity>> activitiesByDocument = getActivitiesByDocument();
057
058        List<String> authorizedDocuments = filterAuthorizedDocuments(activitiesByDocument.keySet(), session);
059        // remove all activities the user has access to
060        for (String authorizedDocument : authorizedDocuments) {
061            activitiesByDocument.remove(authorizedDocument);
062        }
063
064        // extract all unauthorized activities
065        List<Activity> unauthorizedActivities = new ArrayList<Activity>();
066        for (List<Activity> activities : activitiesByDocument.values()) {
067            unauthorizedActivities.addAll(activities);
068        }
069
070        // remove all unauthorized activities
071        filteredActivities.removeAll(unauthorizedActivities);
072        return filteredActivities;
073    }
074
075    protected Map<String, List<Activity>> getActivitiesByDocument() {
076        Map<String, List<Activity>> activitiesByDocuments = new HashMap<String, List<Activity>>();
077        for (Activity activity : this) {
078            List<String> relatedDocuments = getRelatedDocuments(activity);
079            for (String doc : relatedDocuments) {
080                List<Activity> value = activitiesByDocuments.get(doc);
081                if (value == null) {
082                    value = new ArrayList<Activity>();
083                    activitiesByDocuments.put(doc, value);
084                }
085                value.add(activity);
086            }
087        }
088        return activitiesByDocuments;
089    }
090
091    protected List<String> getRelatedDocuments(Activity activity) {
092        List<String> relatedDocuments = new ArrayList<String>();
093
094        String activityObject = activity.getActor();
095        if (activityObject != null && ActivityHelper.isDocument(activityObject)) {
096            relatedDocuments.add(ActivityHelper.getDocumentId(activityObject));
097        }
098        activityObject = activity.getObject();
099        if (activityObject != null && ActivityHelper.isDocument(activityObject)) {
100            relatedDocuments.add(ActivityHelper.getDocumentId(activityObject));
101        }
102        activityObject = activity.getTarget();
103        if (activityObject != null && ActivityHelper.isDocument(activityObject)) {
104            relatedDocuments.add(ActivityHelper.getDocumentId(activityObject));
105        }
106
107        return relatedDocuments;
108    }
109
110    protected List<String> filterAuthorizedDocuments(Set<String> allDocuments, CoreSession session) {
111        String idsParam = "('" + StringUtils.join(allDocuments.toArray(new String[allDocuments.size()]), "', '") + "')";
112        String query = String.format("SELECT ecm:uuid FROM Document WHERE ecm:uuid IN %s", idsParam);
113        IterableQueryResult res = session.queryAndFetch(query, "NXQL");
114
115        try {
116            List<String> authorizedDocuments = new ArrayList<String>();
117            for (Map<String, Serializable> map : res) {
118                authorizedDocuments.add((String) map.get("ecm:uuid"));
119            }
120            return authorizedDocuments;
121        } finally {
122            if (res != null) {
123                res.close();
124            }
125        }
126    }
127
128    @Override
129    public List<ActivityMessage> toActivityMessages(Locale locale) {
130        ActivityStreamService activityStreamService = Framework.getLocalService(ActivityStreamService.class);
131        List<ActivityMessage> messages = new ArrayList<ActivityMessage>();
132        for (Activity activity : this) {
133            messages.add(activityStreamService.toActivityMessage(activity, locale));
134        }
135        return messages;
136    }
137
138    @Override
139    public List<ActivityMessage> toActivityMessages(Locale locale, String activityLinkBuilderName) {
140        ActivityStreamService activityStreamService = Framework.getLocalService(ActivityStreamService.class);
141        List<ActivityMessage> messages = new ArrayList<ActivityMessage>();
142        for (Activity activity : this) {
143            messages.add(activityStreamService.toActivityMessage(activity, locale, activityLinkBuilderName));
144        }
145        return messages;
146    }
147
148    @Override
149    public List<Serializable> toActivityIds() {
150        List<Serializable> activityIds = new ArrayList<Serializable>();
151        for (Activity activity : this) {
152            activityIds.add(activity.getId());
153        }
154        return activityIds;
155    }
156
157}