1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portlet.messageboards.action;
21  
22  import com.liferay.portal.kernel.dao.search.SearchContainer;
23  import com.liferay.portal.kernel.util.ContentTypes;
24  import com.liferay.portal.kernel.util.ParamUtil;
25  import com.liferay.portal.kernel.util.StringPool;
26  import com.liferay.portal.theme.ThemeDisplay;
27  import com.liferay.portal.util.PortalUtil;
28  import com.liferay.portal.util.WebKeys;
29  import com.liferay.portlet.messageboards.service.MBMessageServiceUtil;
30  import com.liferay.util.RSSUtil;
31  import com.liferay.util.servlet.ServletResponseUtil;
32  
33  import javax.servlet.http.HttpServletRequest;
34  import javax.servlet.http.HttpServletResponse;
35  
36  import org.apache.struts.action.Action;
37  import org.apache.struts.action.ActionForm;
38  import org.apache.struts.action.ActionForward;
39  import org.apache.struts.action.ActionMapping;
40  
41  /**
42   * <a href="RSSAction.java.html"><b><i>View Source</i></b></a>
43   *
44   * @author Brian Wing Shun Chan
45   *
46   */
47  public class RSSAction extends Action {
48  
49      public ActionForward execute(
50              ActionMapping mapping, ActionForm form, HttpServletRequest request,
51              HttpServletResponse response)
52          throws Exception {
53  
54          try {
55              ServletResponseUtil.sendFile(
56                  response, null, getRSS(request), ContentTypes.TEXT_XML_UTF8);
57  
58              return null;
59          }
60          catch (Exception e) {
61              PortalUtil.sendError(e, request, response);
62  
63              return null;
64          }
65      }
66  
67      protected byte[] getRSS(HttpServletRequest request) throws Exception {
68          ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
69              WebKeys.THEME_DISPLAY);
70  
71          String plid = ParamUtil.getString(request, "p_l_id");
72          long companyId = ParamUtil.getLong(request, "companyId");
73          long groupId = ParamUtil.getLong(request, "groupId");
74          long userId = ParamUtil.getLong(request, "userId");
75          long categoryId = ParamUtil.getLong(request, "categoryId");
76          long threadId = ParamUtil.getLong(request, "threadId");
77          int max = ParamUtil.getInteger(
78              request, "max", SearchContainer.DEFAULT_DELTA);
79          String type = ParamUtil.getString(
80              request, "type", RSSUtil.DEFAULT_TYPE);
81          double version = ParamUtil.getDouble(
82              request, "version", RSSUtil.DEFAULT_VERSION);
83          String displayStyle = ParamUtil.getString(
84              request, "displayStyle", RSSUtil.DISPLAY_STYLE_FULL_CONTENT);
85  
86          String entryURL =
87              themeDisplay.getURLPortal() + themeDisplay.getPathMain() +
88                  "/message_boards/find_message?p_l_id=" + plid;
89  
90          String rss = StringPool.BLANK;
91  
92          if (companyId > 0) {
93              String feedURL = StringPool.BLANK;
94  
95              rss = MBMessageServiceUtil.getCompanyMessagesRSS(
96                  companyId, max, type, version, displayStyle, feedURL, entryURL,
97                  themeDisplay);
98          }
99          else if (groupId > 0) {
100             String feedURL =
101                 themeDisplay.getURLPortal() + themeDisplay.getPathMain() +
102                     "/message_boards/find_recent_posts?p_l_id=" + plid;
103 
104             if (userId > 0) {
105                 rss = MBMessageServiceUtil.getGroupMessagesRSS(
106                     groupId, userId, max, type, version, displayStyle, feedURL,
107                     entryURL, themeDisplay);
108             }
109             else {
110                 rss = MBMessageServiceUtil.getGroupMessagesRSS(
111                     groupId, max, type, version, displayStyle, feedURL,
112                     entryURL, themeDisplay);
113             }
114         }
115         else if (categoryId > 0) {
116             String feedURL =
117                 themeDisplay.getURLPortal() + themeDisplay.getPathMain() +
118                     "/message_boards/find_category?p_l_id=" + plid +
119                         "&categoryId=" + categoryId;
120 
121             rss = MBMessageServiceUtil.getCategoryMessagesRSS(
122                 categoryId, max, type, version, displayStyle, feedURL, entryURL,
123                 themeDisplay);
124         }
125         else if (threadId > 0) {
126             String feedURL =
127                 themeDisplay.getURLPortal() + themeDisplay.getPathMain() +
128                     "/message_boards/find_thread?p_l_id=" + plid +
129                         "&threadId=" + threadId;
130 
131             rss = MBMessageServiceUtil.getThreadMessagesRSS(
132                 threadId, max, type, version, displayStyle, feedURL, entryURL,
133                 themeDisplay);
134         }
135 
136         return rss.getBytes(StringPool.UTF8);
137     }
138 
139 }