1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portlet.wiki.action;
16  
17  import com.liferay.portal.kernel.dao.search.SearchContainer;
18  import com.liferay.portal.kernel.util.ContentTypes;
19  import com.liferay.portal.kernel.util.ParamUtil;
20  import com.liferay.portal.kernel.util.StringPool;
21  import com.liferay.portal.kernel.util.Validator;
22  import com.liferay.portal.model.Layout;
23  import com.liferay.portal.struts.ActionConstants;
24  import com.liferay.portal.struts.PortletAction;
25  import com.liferay.portal.theme.ThemeDisplay;
26  import com.liferay.portal.util.PortalUtil;
27  import com.liferay.portal.util.PortletKeys;
28  import com.liferay.portal.util.WebKeys;
29  import com.liferay.portlet.PortletURLImpl;
30  import com.liferay.portlet.wiki.service.WikiPageServiceUtil;
31  import com.liferay.util.RSSUtil;
32  import com.liferay.util.servlet.ServletResponseUtil;
33  
34  import java.util.Locale;
35  
36  import javax.portlet.ActionRequest;
37  import javax.portlet.ActionResponse;
38  import javax.portlet.PortletConfig;
39  import javax.portlet.PortletRequest;
40  import javax.portlet.PortletURL;
41  
42  import javax.servlet.http.HttpServletRequest;
43  import javax.servlet.http.HttpServletResponse;
44  
45  import org.apache.struts.action.ActionForm;
46  import org.apache.struts.action.ActionForward;
47  import org.apache.struts.action.ActionMapping;
48  
49  /**
50   * <a href="RSSAction.java.html"><b><i>View Source</i></b></a>
51   *
52   * @author Jorge Ferrer
53   */
54  public class RSSAction extends PortletAction {
55  
56      public ActionForward strutsExecute(
57              ActionMapping mapping, ActionForm form, HttpServletRequest request,
58              HttpServletResponse response)
59          throws Exception {
60  
61          try {
62              ServletResponseUtil.sendFile(
63                  response, null, getRSS(request), ContentTypes.TEXT_XML_UTF8);
64  
65              return null;
66          }
67          catch (Exception e) {
68              PortalUtil.sendError(e, request, response);
69  
70              return null;
71          }
72      }
73  
74      public void processAction(
75              ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
76              ActionRequest actionRequest, ActionResponse actionResponse)
77          throws Exception {
78  
79          try {
80              HttpServletRequest request = PortalUtil.getHttpServletRequest(
81                  actionRequest);
82              HttpServletResponse response = PortalUtil.getHttpServletResponse(
83                  actionResponse);
84  
85              ServletResponseUtil.sendFile(
86                  response, null, getRSS(request), ContentTypes.TEXT_XML_UTF8);
87  
88              setForward(actionRequest, ActionConstants.COMMON_NULL);
89          }
90          catch (Exception e) {
91              PortalUtil.sendError(e, actionRequest, actionResponse);
92          }
93      }
94  
95      protected byte[] getRSS(HttpServletRequest request) throws Exception {
96          ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
97              WebKeys.THEME_DISPLAY);
98  
99          Layout layout = themeDisplay.getLayout();
100 
101         long companyId = ParamUtil.getLong(request, "companyId");
102         long nodeId = ParamUtil.getLong(request, "nodeId");
103         String title = ParamUtil.getString(request, "title");
104         int max = ParamUtil.getInteger(
105             request, "max", SearchContainer.DEFAULT_DELTA);
106         String type = ParamUtil.getString(
107             request, "type", RSSUtil.DEFAULT_TYPE);
108         double version = ParamUtil.getDouble(
109             request, "version", RSSUtil.DEFAULT_VERSION);
110         String displayStyle = ParamUtil.getString(
111             request, "displayStyle", RSSUtil.DISPLAY_STYLE_FULL_CONTENT);
112 
113         PortletURL feedURL = new PortletURLImpl(
114             request, PortletKeys.WIKI, layout.getPlid(),
115             PortletRequest.RENDER_PHASE);
116 
117         feedURL.setParameter("nodeId", String.valueOf(nodeId));
118 
119         PortletURL entryURL = new PortletURLImpl(
120             request, PortletKeys.WIKI, layout.getPlid(),
121             PortletRequest.RENDER_PHASE);
122 
123         entryURL.setParameter("nodeId", String.valueOf(nodeId));
124         entryURL.setParameter("title", title);
125 
126         Locale locale = themeDisplay.getLocale();
127 
128         String rss = StringPool.BLANK;
129 
130         if ((nodeId > 0) && (Validator.isNotNull(title))) {
131             rss = WikiPageServiceUtil.getPagesRSS(
132                 companyId, nodeId, title, max, type, version, displayStyle,
133                 feedURL.toString(), entryURL.toString(), locale);
134         }
135         else if (nodeId > 0) {
136             rss = WikiPageServiceUtil.getNodePagesRSS(
137                 nodeId, max, type, version, displayStyle, feedURL.toString(),
138                 entryURL.toString());
139         }
140 
141         return rss.getBytes(StringPool.UTF8);
142     }
143 
144     protected boolean isCheckMethodOnProcessAction() {
145         return _CHECK_METHOD_ON_PROCESS_ACTION;
146     }
147 
148     private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
149 
150 }