001    /**
002     * Copyright (c) 2000-2013 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                    ThemeDisplay themeDisplay = (ThemeDisplay)portletRequest.getAttribute(
071                            WebKeys.THEME_DISPLAY);
072    
073                    SyndFeed syndFeed = new SyndFeedImpl();
074    
075                    syndFeed.setDescription(GetterUtil.getString(description, name));
076    
077                    List<SyndEntry> syndEntries = new ArrayList<SyndEntry>();
078    
079                    syndFeed.setEntries(syndEntries);
080    
081                    for (AssetEntry assetEntry : assetEntries) {
082                            SyndEntry syndEntry = new SyndEntryImpl();
083    
084                            String author = PortalUtil.getUserName(assetEntry);
085    
086                            syndEntry.setAuthor(author);
087    
088                            SyndContent syndContent = new SyndContentImpl();
089    
090                            syndContent.setType(RSSUtil.ENTRY_TYPE_DEFAULT);
091    
092                            String value = null;
093    
094                            String languageId = LanguageUtil.getLanguageId(portletRequest);
095    
096                            if (displayStyle.equals(RSSUtil.DISPLAY_STYLE_TITLE)) {
097                                    value = StringPool.BLANK;
098                            }
099                            else {
100                                    value = assetEntry.getSummary(languageId, true);
101                            }
102    
103                            syndContent.setValue(value);
104    
105                            syndEntry.setDescription(syndContent);
106    
107                            String link = getEntryURL(
108                                    portletRequest, portletResponse, linkBehavior, assetEntry);
109    
110                            syndEntry.setLink(link);
111    
112                            syndEntry.setPublishedDate(assetEntry.getPublishDate());
113                            syndEntry.setTitle(assetEntry.getTitle(languageId, true));
114                            syndEntry.setUpdatedDate(assetEntry.getModifiedDate());
115                            syndEntry.setUri(syndEntry.getLink());
116    
117                            syndEntries.add(syndEntry);
118                    }
119    
120                    syndFeed.setFeedType(RSSUtil.getFeedType(format, version));
121    
122                    List<SyndLink> syndLinks = new ArrayList<SyndLink>();
123    
124                    syndFeed.setLinks(syndLinks);
125    
126                    SyndLink selfSyndLink = new SyndLinkImpl();
127    
128                    syndLinks.add(selfSyndLink);
129    
130                    String feedURL = getFeedURL(portletRequest);
131    
132                    selfSyndLink.setHref(feedURL);
133    
134                    selfSyndLink.setRel("self");
135    
136                    SyndLink alternateSyndLink = new SyndLinkImpl();
137    
138                    syndLinks.add(alternateSyndLink);
139    
140                    alternateSyndLink.setHref(PortalUtil.getLayoutFullURL(themeDisplay));
141                    alternateSyndLink.setRel("alternate");
142    
143                    syndFeed.setPublishedDate(new Date());
144                    syndFeed.setTitle(name);
145                    syndFeed.setUri(feedURL);
146    
147                    return RSSUtil.export(syndFeed);
148            }
149    
150            protected List<AssetEntry> getAssetEntries(
151                            PortletRequest portletRequest,
152                            PortletPreferences portletPreferences)
153                    throws Exception {
154    
155                    ThemeDisplay themeDisplay = (ThemeDisplay)portletRequest.getAttribute(
156                            WebKeys.THEME_DISPLAY);
157    
158                    int rssDelta = GetterUtil.getInteger(
159                            portletPreferences.getValue("rssDelta", "20"));
160    
161                    return AssetPublisherUtil.getAssetEntries(
162                            portletPreferences, themeDisplay.getLayout(),
163                            themeDisplay.getScopeGroupId(), rssDelta, true);
164            }
165    
166            protected String getAssetPublisherURL(PortletRequest portletRequest)
167                    throws Exception {
168    
169                    ThemeDisplay themeDisplay = (ThemeDisplay)portletRequest.getAttribute(
170                            WebKeys.THEME_DISPLAY);
171    
172                    Layout layout = themeDisplay.getLayout();
173    
174                    PortletDisplay portletDisplay = themeDisplay.getPortletDisplay();
175    
176                    StringBundler sb = new StringBundler(7);
177    
178                    String layoutFriendlyURL = GetterUtil.getString(
179                            PortalUtil.getLayoutFriendlyURL(layout, themeDisplay));
180    
181                    if (!layoutFriendlyURL.startsWith(Http.HTTP_WITH_SLASH) &&
182                            !layoutFriendlyURL.startsWith(Http.HTTPS_WITH_SLASH)) {
183    
184                            sb.append(themeDisplay.getPortalURL());
185                    }
186    
187                    sb.append(layoutFriendlyURL);
188                    sb.append(Portal.FRIENDLY_URL_SEPARATOR);
189                    sb.append("asset_publisher/");
190                    sb.append(portletDisplay.getInstanceId());
191                    sb.append(StringPool.SLASH);
192    
193                    return sb.toString();
194            }
195    
196            protected String getEntryURL(
197                            PortletRequest portletRequest, PortletResponse portletResponse,
198                            String linkBehavior, AssetEntry assetEntry)
199                    throws Exception {
200    
201                    if (linkBehavior.equals("viewInPortlet")) {
202                            return getEntryURLViewInContext(
203                                    portletRequest, portletResponse, assetEntry);
204                    }
205                    else {
206                            return getEntryURLAssetPublisher(
207                                    portletRequest, portletResponse, assetEntry);
208                    }
209            }
210    
211            protected String getEntryURLAssetPublisher(
212                            PortletRequest portletRequest, PortletResponse portletResponse,
213                            AssetEntry assetEntry)
214                    throws Exception {
215    
216                    AssetRendererFactory assetRendererFactory =
217                            AssetRendererFactoryRegistryUtil.getAssetRendererFactoryByClassName(
218                                    assetEntry.getClassName());
219    
220                    StringBundler sb = new StringBundler(4);
221    
222                    sb.append(getAssetPublisherURL(portletRequest));
223                    sb.append(assetRendererFactory.getType());
224                    sb.append("/id/");
225                    sb.append(assetEntry.getEntryId());
226    
227                    return sb.toString();
228            }
229    
230            protected String getEntryURLViewInContext(
231                            PortletRequest portletRequest, PortletResponse portletResponse,
232                            AssetEntry assetEntry)
233                    throws Exception {
234    
235                    AssetRendererFactory assetRendererFactory =
236                            AssetRendererFactoryRegistryUtil.getAssetRendererFactoryByClassName(
237                                    assetEntry.getClassName());
238    
239                    AssetRenderer assetRenderer = assetRendererFactory.getAssetRenderer(
240                            assetEntry.getClassPK());
241    
242                    String viewInContextURL = assetRenderer.getURLViewInContext(
243                            (LiferayPortletRequest)portletRequest,
244                            (LiferayPortletResponse)portletResponse, null);
245    
246                    if (Validator.isNotNull(viewInContextURL) &&
247                            !viewInContextURL.startsWith(Http.HTTP_WITH_SLASH) &&
248                            !viewInContextURL.startsWith(Http.HTTPS_WITH_SLASH)) {
249    
250                            ThemeDisplay themeDisplay =
251                                    (ThemeDisplay)portletRequest.getAttribute(
252                                            WebKeys.THEME_DISPLAY);
253    
254                            viewInContextURL = themeDisplay.getPortalURL() + viewInContextURL;
255                    }
256    
257                    return viewInContextURL;
258            }
259    
260            protected String getFeedURL(PortletRequest portletRequest)
261                    throws Exception {
262    
263                    String feedURL = getAssetPublisherURL(portletRequest);
264    
265                    return feedURL.concat("rss");
266            }
267    
268            @Override
269            protected byte[] getRSS(
270                            ResourceRequest portletRequest, ResourceResponse portletResponse)
271                    throws Exception {
272    
273                    PortletPreferences portletPreferences = portletRequest.getPreferences();
274    
275                    String selectionStyle = portletPreferences.getValue(
276                            "selectionStyle", "dynamic");
277    
278                    if (!selectionStyle.equals("dynamic")) {
279                            return new byte[0];
280                    }
281    
282                    String assetLinkBehavior = portletPreferences.getValue(
283                            "assetLinkBehavior", "showFullContent");
284                    String rssDisplayStyle = portletPreferences.getValue(
285                            "rssDisplayStyle", RSSUtil.DISPLAY_STYLE_ABSTRACT);
286                    String rssFeedType = portletPreferences.getValue(
287                            "rssFeedType", RSSUtil.FEED_TYPE_DEFAULT);
288                    String rssName = portletPreferences.getValue("rssName", null);
289    
290                    String format = RSSUtil.getFeedTypeFormat(rssFeedType);
291                    double version = RSSUtil.getFeedTypeVersion(rssFeedType);
292    
293                    String rss = exportToRSS(
294                            portletRequest, portletResponse, rssName, null, format, version,
295                            rssDisplayStyle, assetLinkBehavior,
296                            getAssetEntries(portletRequest, portletPreferences));
297    
298                    return rss.getBytes(StringPool.UTF8);
299            }
300    
301    }