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Java > Open Source Codes > org > netbeans > modules > javacore > parser > AttributeInfoMeasure


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19 package org.netbeans.modules.javacore.parser;
20
21 import org.netbeans.modules.javacore.jmiimpl.javamodel.AttributeImpl;
22
23 /**
24  *
25  * @author Tomas Hurka
26  */
27 class AttributeInfoMeasure implements Measure {
28     public static final AttributeInfoMeasure INSTANCE = new AttributeInfoMeasure();
29
30     private static final int NAME_WEIGHT = 60;
31     private static final int TYPE_WEIGHT = 40;
32
33     /** Creates a new instance of ClassMeasure */
34     private AttributeInfoMeasure() {
35     }
36
37     /** Compares Java Field to ASTree object.
38      * @param refObject Must be Java Field
39      * @param asTree
40      * @return distance
41      */
42     public int getDistance(Object JavaDoc refObject, Object JavaDoc ast) {
43         if (ast instanceof AttributeInfo) {
44             AttributeInfo astInfo = (AttributeInfo) ast;
45             AttributeImpl refInfo = (AttributeImpl) refObject;
46             int result = StringMeasure.INSTANCE.getDistance(refInfo.getName(),astInfo.name) * NAME_WEIGHT;
47             if (refInfo.isPersisted()) {
48                 result += ClassNameMeasure.INSTANCE.getDistance(refInfo.getTypeRef(),astInfo.type) * TYPE_WEIGHT;
49             }
50             result/=100;
51             return result > INFINITE_DISTANCE ? INFINITE_DISTANCE : result;
52         }
53         return INFINITE_DISTANCE;
54     }
55 }
56
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