WeblogEntryComparator


1   /*
2    * Created on Apr 16, 2004
3    */
4   package org.roller.pojos;
5   
6   import java.io.Serializable  ;
7   import java.util.Comparator  ;
8   
9   /**
10   * Sorts WeblogEntryData objects in reverse chronological order
11   * (most recently published entries first).  If they happen to
12   * have the same pubTime, then sort alphabetically by title.
13   * 
14   * @author lance.lavandowska
15   */
16  public class WeblogEntryComparator implements Comparator  , Serializable  
17  {
18      static final long serialVersionUID = -9067148992322255150L;
19      
20      public int compare(Object   val1, Object   val2)
21      throws ClassCastException  
22      {
23          WeblogEntryData entry1 = (WeblogEntryData)val1;
24          WeblogEntryData entry2 = (WeblogEntryData)val2;
25          long pubTime1 = entry1.getPubTime().getTime();
26          long pubTime2 = entry2.getPubTime().getTime();
27  
28          if (pubTime1 > pubTime2)
29          {
30              return -1;
31          }
32          else if (pubTime1 < pubTime2)
33          {
34              return 1;
35          }
36  
37          // if pubTimes are the same, return
38          // results of String.compareTo() on Title
39          return entry1.getTitle().compareTo(entry2.getTitle());
40      }
41  }
42

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