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.ratings.action;
21  
22  import com.liferay.portal.kernel.json.JSONFactoryUtil;
23  import com.liferay.portal.kernel.json.JSONObject;
24  import com.liferay.portal.kernel.util.MathUtil;
25  import com.liferay.portal.kernel.util.ParamUtil;
26  import com.liferay.portal.struts.JSONAction;
27  import com.liferay.portlet.ratings.model.RatingsStats;
28  import com.liferay.portlet.ratings.service.RatingsEntryServiceUtil;
29  import com.liferay.portlet.ratings.service.RatingsStatsLocalServiceUtil;
30  
31  import javax.servlet.http.HttpServletRequest;
32  import javax.servlet.http.HttpServletResponse;
33  
34  import org.apache.struts.action.ActionForm;
35  import org.apache.struts.action.ActionMapping;
36  
37  /**
38   * <a href="RateEntryAction.java.html"><b><i>View Source</i></b></a>
39   *
40   * @author Brian Wing Shun Chan
41   *
42   */
43  public class RateEntryAction extends JSONAction {
44  
45      public String getJSON(
46              ActionMapping mapping, ActionForm form, HttpServletRequest request,
47              HttpServletResponse response)
48          throws Exception {
49  
50          String className = getClassName(request);
51          long classPK = getClassPK(request);
52          double score = ParamUtil.getDouble(request, "score");
53  
54          if (score == 0) {
55              RatingsEntryServiceUtil.deleteEntry(className, classPK);
56          }
57          else {
58              RatingsEntryServiceUtil.updateEntry(className, classPK, score);
59          }
60  
61          RatingsStats stats = RatingsStatsLocalServiceUtil.getStats(
62              className, classPK);
63  
64          double averageScore = MathUtil.format(stats.getAverageScore(), 1, 1);
65  
66          JSONObject jsonObj = JSONFactoryUtil.createJSONObject();
67  
68          jsonObj.put("totalEntries", stats.getTotalEntries());
69          jsonObj.put("totalScore", stats.getTotalScore());
70          jsonObj.put("averageScore", averageScore);
71  
72          return jsonObj.toString();
73      }
74  
75      protected String getClassName(HttpServletRequest request) {
76          return ParamUtil.getString(request, "className");
77      }
78  
79      protected long getClassPK(HttpServletRequest request) {
80          return ParamUtil.getLong(request, "classPK");
81      }
82  
83  }