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


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.AnnotationTypeImpl;
22
23 /**
24  *
25  * @author Tomas Hurka
26  */
27 class AnnotationTypeInfoMeasure implements Measure {
28     public static final AnnotationTypeInfoMeasure INSTANCE = new AnnotationTypeInfoMeasure();
29
30     private static final int NAME_WEIGHT = 70;
31     private static final int MEMBERS_WEIGHT = 30;
32
33     /** Creates a new instance of ClassMeasure */
34     private AnnotationTypeInfoMeasure() {
35     }
36
37     /** Compares JavaClass to ASTree object.
38      * @param refObject Must be JavaClass
39      * @param asTree
40      * @return distance
41      */
42     public int getDistance(Object JavaDoc refObject, Object JavaDoc ast) {
43         AnnotationTypeImpl refInfo = (AnnotationTypeImpl) refObject;
44         
45         if (ast instanceof AnnotationTypeInfo) {
46             AnnotationTypeInfo astInfo = (AnnotationTypeInfo) ast;
47             int result = 0;
48
49             result += StringMeasure.INSTANCE.getDistance(refInfo.getName(), astInfo.name) * NAME_WEIGHT;
50             if (refInfo.isPersisted()) {
51                 String JavaDoc[] refMemberNames = InfoUtil.getElementNames(refInfo.getFeatures());
52                 String JavaDoc[] astMemberNames = InfoUtil.getElementNames(astInfo.features);
53                 result += new ArrayMeasure(StringMeasure.INSTANCE).getDistance(refMemberNames, astMemberNames) * MEMBERS_WEIGHT;
54             }
55             result = result / 100;
56             return result > INFINITE_DISTANCE ? INFINITE_DISTANCE : result;
57         }
58         return INFINITE_DISTANCE;
59     }
60 }
61
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