1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.wiki.action;
24  
25  import com.liferay.portal.kernel.dao.search.SearchContainer;
26  import com.liferay.portal.kernel.util.ContentTypes;
27  import com.liferay.portal.kernel.util.ParamUtil;
28  import com.liferay.portal.kernel.util.StringPool;
29  import com.liferay.portal.kernel.util.Validator;
30  import com.liferay.portal.model.Layout;
31  import com.liferay.portal.struts.ActionConstants;
32  import com.liferay.portal.struts.PortletAction;
33  import com.liferay.portal.theme.ThemeDisplay;
34  import com.liferay.portal.util.PortalUtil;
35  import com.liferay.portal.util.WebKeys;
36  import com.liferay.portlet.ActionRequestImpl;
37  import com.liferay.portlet.ActionResponseImpl;
38  import com.liferay.portlet.wiki.NoSuchNodeException;
39  import com.liferay.portlet.wiki.NoSuchPageException;
40  import com.liferay.portlet.wiki.service.WikiPageServiceUtil;
41  import com.liferay.util.RSSUtil;
42  import com.liferay.util.servlet.ServletResponseUtil;
43  
44  import java.util.Locale;
45  
46  import javax.portlet.ActionRequest;
47  import javax.portlet.ActionResponse;
48  import javax.portlet.PortletConfig;
49  
50  import javax.servlet.http.HttpServletRequest;
51  import javax.servlet.http.HttpServletResponse;
52  import javax.servlet.jsp.PageContext;
53  
54  import org.apache.commons.logging.Log;
55  import org.apache.commons.logging.LogFactory;
56  import org.apache.struts.action.ActionForm;
57  import org.apache.struts.action.ActionForward;
58  import org.apache.struts.action.ActionMapping;
59  
60  /**
61   * <a href="RSSAction.java.html"><b><i>View Source</i></b></a>
62   *
63   * @author Jorge Ferrer
64   *
65   */
66  public class RSSAction extends PortletAction {
67  
68      public ActionForward strutsExecute(
69              ActionMapping mapping, ActionForm form, HttpServletRequest req,
70              HttpServletResponse res)
71          throws Exception {
72  
73          try {
74              ServletResponseUtil.sendFile(
75                  res, null, getRSS(req), ContentTypes.TEXT_XML_UTF8);
76  
77              return null;
78          }
79          catch (Exception e) {
80              req.setAttribute(PageContext.EXCEPTION, e);
81  
82              return mapping.findForward(ActionConstants.COMMON_ERROR);
83          }
84      }
85  
86      public void processAction(
87              ActionMapping mapping, ActionForm form, PortletConfig config,
88              ActionRequest req, ActionResponse res)
89          throws Exception {
90  
91          HttpServletRequest httpReq =
92              ((ActionRequestImpl)req).getHttpServletRequest();
93          HttpServletResponse httpRes =
94              ((ActionResponseImpl)res).getHttpServletResponse();
95  
96          ServletResponseUtil.sendFile(
97              httpRes, null, getRSS(httpReq), ContentTypes.TEXT_XML_UTF8);
98  
99          setForward(req, ActionConstants.COMMON_NULL);
100     }
101 
102     protected byte[] getRSS(HttpServletRequest req) throws Exception {
103         ThemeDisplay themeDisplay =
104             (ThemeDisplay)req.getAttribute(WebKeys.THEME_DISPLAY);
105 
106         Layout layout = themeDisplay.getLayout();
107 
108         long companyId = ParamUtil.getLong(req, "companyId");
109         long nodeId = ParamUtil.getLong(req, "nodeId");
110         String title = ParamUtil.getString(req, "title");
111         int max = ParamUtil.getInteger(
112             req, "max", SearchContainer.DEFAULT_DELTA);
113         String type = ParamUtil.getString(req, "type", RSSUtil.DEFAULT_TYPE);
114         double version = ParamUtil.getDouble(
115             req, "version", RSSUtil.DEFAULT_VERSION);
116         String displayStyle = ParamUtil.getString(
117             req, "displayStyle", RSSUtil.DISPLAY_STYLE_FULL_CONTENT);
118 
119         String feedURL =
120             themeDisplay.getURLPortal() +
121                 PortalUtil.getLayoutURL(layout, themeDisplay) + "/wiki/" +
122                     nodeId;
123 
124         String entryURL = feedURL + StringPool.SLASH + title;
125 
126         Locale locale = themeDisplay.getLocale();
127 
128         String rss = StringPool.BLANK;
129 
130         if ((nodeId > 0) && (Validator.isNotNull(title))) {
131             try {
132                 rss = WikiPageServiceUtil.getPagesRSS(
133                     companyId, nodeId, title, max, type, version, displayStyle,
134                     feedURL, entryURL, locale);
135             }
136             catch (NoSuchPageException nspe) {
137                 if (_log.isWarnEnabled()) {
138                     _log.warn(nspe);
139                 }
140             }
141         }
142         else if (nodeId > 0) {
143             try {
144                 rss = WikiPageServiceUtil.getNodePagesRSS(
145                     nodeId, max, type, version, displayStyle, feedURL,
146                     entryURL);
147             }
148             catch (NoSuchNodeException nsne) {
149                 if (_log.isWarnEnabled()) {
150                     _log.warn(nsne);
151                 }
152             }
153         }
154 
155         return rss.getBytes(StringPool.UTF8);
156     }
157 
158     protected boolean isCheckMethodOnProcessAction() {
159         return _CHECK_METHOD_ON_PROCESS_ACTION;
160     }
161 
162     private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
163 
164     private static Log _log = LogFactory.getLog(RSSAction.class);
165 
166 }