001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Thomas Roger <troger@nuxeo.com>
018 */
019
020package org.nuxeo.ecm.activity;
021
022import java.io.Serializable;
023import java.util.ArrayList;
024import java.util.Collection;
025import java.util.HashMap;
026import java.util.List;
027import java.util.Locale;
028import java.util.Map;
029import java.util.Set;
030
031import org.nuxeo.common.utils.StringUtils;
032import org.nuxeo.ecm.core.api.CoreSession;
033import org.nuxeo.ecm.core.api.IterableQueryResult;
034import org.nuxeo.runtime.api.Framework;
035
036/**
037 * Default implementation of {@link ActivitiesList}.
038 *
039 * @author <a href="mailto:troger@nuxeo.com">Thomas Roger</a>
040 * @since 5.5
041 */
042public class ActivitiesListImpl extends ArrayList<Activity> implements ActivitiesList {
043
044    private static final long serialVersionUID = 1L;
045
046    public ActivitiesListImpl() {
047        super();
048    }
049
050    public ActivitiesListImpl(Collection<? extends Activity> c) {
051        super(c);
052    }
053
054    @Override
055    public ActivitiesList filterActivities(CoreSession session) {
056        ActivitiesList filteredActivities = new ActivitiesListImpl(this);
057
058        Map<String, List<Activity>> activitiesByDocument = getActivitiesByDocument();
059
060        List<String> authorizedDocuments = filterAuthorizedDocuments(activitiesByDocument.keySet(), session);
061        // remove all activities the user has access to
062        for (String authorizedDocument : authorizedDocuments) {
063            activitiesByDocument.remove(authorizedDocument);
064        }
065
066        // extract all unauthorized activities
067        List<Activity> unauthorizedActivities = new ArrayList<Activity>();
068        for (List<Activity> activities : activitiesByDocument.values()) {
069            unauthorizedActivities.addAll(activities);
070        }
071
072        // remove all unauthorized activities
073        filteredActivities.removeAll(unauthorizedActivities);
074        return filteredActivities;
075    }
076
077    protected Map<String, List<Activity>> getActivitiesByDocument() {
078        Map<String, List<Activity>> activitiesByDocuments = new HashMap<String, List<Activity>>();
079        for (Activity activity : this) {
080            List<String> relatedDocuments = getRelatedDocuments(activity);
081            for (String doc : relatedDocuments) {
082                List<Activity> value = activitiesByDocuments.get(doc);
083                if (value == null) {
084                    value = new ArrayList<Activity>();
085                    activitiesByDocuments.put(doc, value);
086                }
087                value.add(activity);
088            }
089        }
090        return activitiesByDocuments;
091    }
092
093    protected List<String> getRelatedDocuments(Activity activity) {
094        List<String> relatedDocuments = new ArrayList<String>();
095
096        String activityObject = activity.getActor();
097        if (activityObject != null && ActivityHelper.isDocument(activityObject)) {
098            relatedDocuments.add(ActivityHelper.getDocumentId(activityObject));
099        }
100        activityObject = activity.getObject();
101        if (activityObject != null && ActivityHelper.isDocument(activityObject)) {
102            relatedDocuments.add(ActivityHelper.getDocumentId(activityObject));
103        }
104        activityObject = activity.getTarget();
105        if (activityObject != null && ActivityHelper.isDocument(activityObject)) {
106            relatedDocuments.add(ActivityHelper.getDocumentId(activityObject));
107        }
108
109        return relatedDocuments;
110    }
111
112    protected List<String> filterAuthorizedDocuments(Set<String> allDocuments, CoreSession session) {
113        String idsParam = "('" + StringUtils.join(allDocuments.toArray(new String[allDocuments.size()]), "', '") + "')";
114        String query = String.format("SELECT ecm:uuid FROM Document WHERE ecm:uuid IN %s", idsParam);
115        IterableQueryResult res = session.queryAndFetch(query, "NXQL");
116
117        try {
118            List<String> authorizedDocuments = new ArrayList<String>();
119            for (Map<String, Serializable> map : res) {
120                authorizedDocuments.add((String) map.get("ecm:uuid"));
121            }
122            return authorizedDocuments;
123        } finally {
124            if (res != null) {
125                res.close();
126            }
127        }
128    }
129
130    @Override
131    public List<ActivityMessage> toActivityMessages(Locale locale) {
132        ActivityStreamService activityStreamService = Framework.getLocalService(ActivityStreamService.class);
133        List<ActivityMessage> messages = new ArrayList<ActivityMessage>();
134        for (Activity activity : this) {
135            messages.add(activityStreamService.toActivityMessage(activity, locale));
136        }
137        return messages;
138    }
139
140    @Override
141    public List<ActivityMessage> toActivityMessages(Locale locale, String activityLinkBuilderName) {
142        ActivityStreamService activityStreamService = Framework.getLocalService(ActivityStreamService.class);
143        List<ActivityMessage> messages = new ArrayList<ActivityMessage>();
144        for (Activity activity : this) {
145            messages.add(activityStreamService.toActivityMessage(activity, locale, activityLinkBuilderName));
146        }
147        return messages;
148    }
149
150    @Override
151    public List<Serializable> toActivityIds() {
152        List<Serializable> activityIds = new ArrayList<Serializable>();
153        for (Activity activity : this) {
154            activityIds.add(activity.getId());
155        }
156        return activityIds;
157    }
158
159}