001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.assetpublisher.action;
016    
017    import com.liferay.portal.kernel.language.LanguageUtil;
018    import com.liferay.portal.kernel.portlet.LiferayPortletRequest;
019    import com.liferay.portal.kernel.portlet.LiferayPortletResponse;
020    import com.liferay.portal.kernel.util.GetterUtil;
021    import com.liferay.portal.kernel.util.Http;
022    import com.liferay.portal.kernel.util.StringBundler;
023    import com.liferay.portal.kernel.util.StringPool;
024    import com.liferay.portal.kernel.util.Validator;
025    import com.liferay.portal.model.Layout;
026    import com.liferay.portal.theme.PortletDisplay;
027    import com.liferay.portal.theme.ThemeDisplay;
028    import com.liferay.portal.util.Portal;
029    import com.liferay.portal.util.PortalUtil;
030    import com.liferay.portal.util.WebKeys;
031    import com.liferay.portlet.asset.AssetRendererFactoryRegistryUtil;
032    import com.liferay.portlet.asset.model.AssetEntry;
033    import com.liferay.portlet.asset.model.AssetRenderer;
034    import com.liferay.portlet.asset.model.AssetRendererFactory;
035    import com.liferay.portlet.assetpublisher.util.AssetPublisherUtil;
036    import com.liferay.util.RSSUtil;
037    
038    import com.sun.syndication.feed.synd.SyndContent;
039    import com.sun.syndication.feed.synd.SyndContentImpl;
040    import com.sun.syndication.feed.synd.SyndEntry;
041    import com.sun.syndication.feed.synd.SyndEntryImpl;
042    import com.sun.syndication.feed.synd.SyndFeed;
043    import com.sun.syndication.feed.synd.SyndFeedImpl;
044    import com.sun.syndication.feed.synd.SyndLink;
045    import com.sun.syndication.feed.synd.SyndLinkImpl;
046    
047    import java.util.ArrayList;
048    import java.util.Date;
049    import java.util.List;
050    
051    import javax.portlet.PortletPreferences;
052    import javax.portlet.PortletRequest;
053    import javax.portlet.PortletResponse;
054    import javax.portlet.ResourceRequest;
055    import javax.portlet.ResourceResponse;
056    
057    /**
058     * @author Brian Wing Shun Chan
059     * @author Julio Camarero
060     */
061    public class RSSAction extends com.liferay.portal.struts.RSSAction {
062    
063            protected String exportToRSS(
064                            PortletRequest portletRequest, PortletResponse portletResponse,
065                            String name, String description, String format, double version,
066                            String displayStyle, String linkBehavior,
067                            List<AssetEntry> assetEntries)
068                    throws Exception {
069    
070                    SyndFeed syndFeed = new SyndFeedImpl();
071    
072                    syndFeed.setDescription(GetterUtil.getString(description, name));
073    
074                    List<SyndEntry> syndEntries = new ArrayList<SyndEntry>();
075    
076                    syndFeed.setEntries(syndEntries);
077    
078                    for (AssetEntry assetEntry : assetEntries) {
079                            SyndEntry syndEntry = new SyndEntryImpl();
080    
081                            String author = PortalUtil.getUserName(assetEntry);
082    
083                            syndEntry.setAuthor(author);
084    
085                            SyndContent syndContent = new SyndContentImpl();
086    
087                            syndContent.setType(RSSUtil.ENTRY_TYPE_DEFAULT);
088    
089                            String value = null;
090    
091                            String languageId = LanguageUtil.getLanguageId(portletRequest);
092    
093                            if (displayStyle.equals(RSSUtil.DISPLAY_STYLE_TITLE)) {
094                                    value = StringPool.BLANK;
095                            }
096                            else {
097                                    value = assetEntry.getSummary(languageId, true);
098                            }
099    
100                            syndContent.setValue(value);
101    
102                            syndEntry.setDescription(syndContent);
103    
104                            String link = getEntryURL(
105                                    portletRequest, portletResponse, linkBehavior, assetEntry);
106    
107                            syndEntry.setLink(link);
108    
109                            syndEntry.setPublishedDate(assetEntry.getPublishDate());
110                            syndEntry.setTitle(assetEntry.getTitle(languageId, true));
111                            syndEntry.setUpdatedDate(assetEntry.getModifiedDate());
112                            syndEntry.setUri(syndEntry.getLink());
113    
114                            syndEntries.add(syndEntry);
115                    }
116    
117                    syndFeed.setFeedType(RSSUtil.getFeedType(format, version));
118    
119                    List<SyndLink> syndLinks = new ArrayList<SyndLink>();
120    
121                    syndFeed.setLinks(syndLinks);
122    
123                    SyndLink selfSyndLink = new SyndLinkImpl();
124    
125                    syndLinks.add(selfSyndLink);
126    
127                    String feedURL = getFeedURL(portletRequest);
128    
129                    selfSyndLink.setHref(feedURL);
130    
131                    selfSyndLink.setRel("self");
132    
133                    syndFeed.setPublishedDate(new Date());
134                    syndFeed.setTitle(name);
135                    syndFeed.setUri(feedURL);
136    
137                    return RSSUtil.export(syndFeed);
138            }
139    
140            protected List<AssetEntry> getAssetEntries(
141                            PortletRequest portletRequest, PortletPreferences preferences)
142                    throws Exception {
143    
144                    ThemeDisplay themeDisplay = (ThemeDisplay)portletRequest.getAttribute(
145                            WebKeys.THEME_DISPLAY);
146    
147                    return AssetPublisherUtil.getAssetEntries(
148                            preferences, themeDisplay.getLayout(),
149                            themeDisplay.getScopeGroupId(), true);
150            }
151    
152            protected String getAssetPublisherURL(PortletRequest portletRequest)
153                    throws Exception {
154    
155                    ThemeDisplay themeDisplay = (ThemeDisplay)portletRequest.getAttribute(
156                            WebKeys.THEME_DISPLAY);
157    
158                    Layout layout = themeDisplay.getLayout();
159    
160                    PortletDisplay portletDisplay = themeDisplay.getPortletDisplay();
161    
162                    StringBundler sb = new StringBundler(7);
163    
164                    String layoutFriendlyURL = GetterUtil.getString(
165                            PortalUtil.getLayoutFriendlyURL(layout, themeDisplay));
166    
167                    if (!layoutFriendlyURL.startsWith(Http.HTTP_WITH_SLASH) &&
168                            !layoutFriendlyURL.startsWith(Http.HTTPS_WITH_SLASH)) {
169    
170                            sb.append(themeDisplay.getPortalURL());
171                    }
172    
173                    sb.append(layoutFriendlyURL);
174                    sb.append(Portal.FRIENDLY_URL_SEPARATOR);
175                    sb.append("asset_publisher/");
176                    sb.append(portletDisplay.getInstanceId());
177                    sb.append(StringPool.SLASH);
178    
179                    return sb.toString();
180            }
181    
182            protected String getEntryURL(
183                            PortletRequest portletRequest, PortletResponse portletResponse,
184                            String linkBehavior, AssetEntry assetEntry)
185                    throws Exception {
186    
187                    if (linkBehavior.equals("viewInPortlet")) {
188                            return getEntryURLViewInContext(
189                                    portletRequest, portletResponse, assetEntry);
190                    }
191                    else {
192                            return getEntryURLAssetPublisher(
193                                    portletRequest, portletResponse, assetEntry);
194                    }
195            }
196    
197            protected String getEntryURLAssetPublisher(
198                            PortletRequest portletRequest, PortletResponse portletResponse,
199                            AssetEntry assetEntry)
200                    throws Exception {
201    
202                    AssetRendererFactory assetRendererFactory =
203                            AssetRendererFactoryRegistryUtil.getAssetRendererFactoryByClassName(
204                                    assetEntry.getClassName());
205    
206                    StringBundler sb = new StringBundler(4);
207    
208                    sb.append(getAssetPublisherURL(portletRequest));
209                    sb.append(assetRendererFactory.getType());
210                    sb.append("/id/");
211                    sb.append(assetEntry.getEntryId());
212    
213                    return sb.toString();
214            }
215    
216            protected String getEntryURLViewInContext(
217                            PortletRequest portletRequest, PortletResponse portletResponse,
218                            AssetEntry assetEntry)
219                    throws Exception {
220    
221                    AssetRendererFactory assetRendererFactory =
222                            AssetRendererFactoryRegistryUtil.getAssetRendererFactoryByClassName(
223                                    assetEntry.getClassName());
224    
225                    AssetRenderer assetRenderer = assetRendererFactory.getAssetRenderer(
226                            assetEntry.getClassPK());
227    
228                    String viewInContextURL = assetRenderer.getURLViewInContext(
229                            (LiferayPortletRequest)portletRequest,
230                            (LiferayPortletResponse)portletResponse, null);
231    
232                    if (Validator.isNotNull(viewInContextURL) &&
233                            !viewInContextURL.startsWith(Http.HTTP_WITH_SLASH) &&
234                            !viewInContextURL.startsWith(Http.HTTPS_WITH_SLASH)) {
235    
236                            ThemeDisplay themeDisplay =
237                                    (ThemeDisplay)portletRequest.getAttribute(
238                                            WebKeys.THEME_DISPLAY);
239    
240                            viewInContextURL = themeDisplay.getPortalURL() + viewInContextURL;
241                    }
242    
243                    return viewInContextURL;
244            }
245    
246            protected String getFeedURL(PortletRequest portletRequest)
247                    throws Exception {
248    
249                    String feedURL = getAssetPublisherURL(portletRequest);
250    
251                    return feedURL.concat("rss");
252            }
253    
254            @Override
255            protected byte[] getRSS(
256                            ResourceRequest portletRequest, ResourceResponse portletResponse)
257                    throws Exception {
258    
259                    PortletPreferences preferences = portletRequest.getPreferences();
260    
261                    String selectionStyle = preferences.getValue(
262                            "selectionStyle", "dynamic");
263    
264                    if (!selectionStyle.equals("dynamic")) {
265                            return new byte[0];
266                    }
267    
268                    String assetLinkBehavior = preferences.getValue(
269                            "assetLinkBehavior", "showFullContent");
270                    String rssDisplayStyle = preferences.getValue(
271                            "rssDisplayStyle", RSSUtil.DISPLAY_STYLE_ABSTRACT);
272                    String rssFeedType = preferences.getValue(
273                            "rssFeedType", RSSUtil.FEED_TYPE_DEFAULT);
274                    String rssName = preferences.getValue("rssName", null);
275    
276                    String format = RSSUtil.getFeedTypeFormat(rssFeedType);
277                    double version = RSSUtil.getFeedTypeVersion(rssFeedType);
278    
279                    String rss = exportToRSS(
280                            portletRequest, portletResponse, rssName, null, format, version,
281                            rssDisplayStyle, assetLinkBehavior,
282                            getAssetEntries(portletRequest, preferences));
283    
284                    return rss.getBytes(StringPool.UTF8);
285            }
286    
287    }