CommentSpamChecker


1   package org.roller.util;
2   
3   import org.apache.commons.logging.Log;
4   import org.apache.commons.logging.LogFactory;
5   import org.roller.business.ThreadManagerImpl;
6   import org.roller.model.RollerFactory;
7   import org.roller.model.ThreadManager;
8   import org.roller.pojos.CommentData;
9   
10  /**
11   * Created on Mar 9, 2004
12   * @author lance.lavandowska
13   */
14  public class CommentSpamChecker
15  {
16      private static Log mLogger = LogFactory.getLog(CommentSpamChecker.class);
17      private Blacklist blacklist = Blacklist.getBlacklist(null,null);
18  
19      // -----------------------------------------------------------------------
20      /**
21       * Runs comment check on comment, sets spam flag on comment.
22       */
23      public void testComment(CommentData comment)
24      {
25          try
26          {
27              // by using the OR conditional it'll test each
28              // one in order and fall into the body without
29              // having to test each and every condition.
30              // Not sure which is the optimal order to check, though.
31              boolean isSpam = blacklist.isBlacklisted(comment.getUrl());
32              isSpam = blacklist.isBlacklisted(comment.getContent())?true:isSpam;
33              isSpam = blacklist.isBlacklisted(comment.getEmail())?true:isSpam;
34  
35              if (isSpam)
36              {
37                  comment.setSpam(Boolean.TRUE);
38                  comment.save();
39                  RollerFactory.getRoller().commit();
40              }
41          }
42          catch (Exception   e)
43          {
44              mLogger.error("Processing Comment",e);
45          }
46          finally
47          {
48              RollerFactory.getRoller().release();
49          }
50      }
51      
52      // -----------------------------------------------------------------------
53      /**
54       * Spawns thread to run comment check.
55       */
56      public void testComment(CommentData comment, ThreadManager threadMgr)
57      {
58          try
59          {
60              if (threadMgr != null)
61              {
62                  threadMgr.executeInBackground(new CommentCheckerRunnable(comment));
63              }
64              else
65              {
66                  mLogger.warn("No thread manager found.");
67              }
68          } 
69          catch (InterruptedException   e) {
70              mLogger.warn("Interrupted during Comment Spam check",e);
71          }
72      }
73  
74      // -----------------------------------------------------------------------
75      /**
76       * Runnable to run spam check on it's own thread.
77       */
78      private class CommentCheckerRunnable implements Runnable  
79      {
80          private CommentData mComment = null;
81          public CommentCheckerRunnable( CommentData comment)
82          {
83              mComment = comment;
84          }
85          public void run()
86          {
87              testComment(mComment);
88          }
89      }
90  }
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