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Java > Open Source Codes > org > eclipse > help > ui > internal > views > SorterByScore


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.help.ui.internal.views;
12
13 import org.eclipse.help.internal.search.SearchHit;
14 import org.eclipse.jface.viewers.Viewer;
15 import org.eclipse.jface.viewers.ViewerComparator;
16
17 public class SorterByScore extends ViewerComparator {
18     public SorterByScore() {
19         super(ReusableHelpPart.SHARED_COLLATOR);
20     }
21
22     /* (non-Javadoc)
23      * @see org.eclipse.jface.viewers.ViewerComparator#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
24      */
25     public int compare(Viewer viewer, Object JavaDoc e1, Object JavaDoc e2) {
26         try {
27             float rank1 = ((SearchHit) e1).getScore();
28             float rank2 = ((SearchHit) e2).getScore();
29             if (rank1 - rank2 > 0) {
30                 return -1;
31             } else if (rank1 == rank2) {
32                 return 0;
33             } else {
34                 return 1;
35             }
36         } catch (Exception JavaDoc e) {
37         }
38         return super.compare(viewer, e1, e2);
39     }
40 }
41
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