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Java > Open Source Codes > org > objectweb > jalisto > se > query > NavigationInfo


1 /*
2  * Jalisto - JAva LIght STOrage
3  * Copyright (C) 2000-2005 Xcalia http://www.xcalia.com
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
18  *
19  * Xcalia
20  * 71, rue Desnouettes
21  * 75014 Paris - France
22  * http://www.xcalia.com
23  */
24 package org.objectweb.jalisto.se.query;
25
26 import org.objectweb.jalisto.se.api.ClassDescription;
27 import org.objectweb.jalisto.se.api.query.FielComparator;
28 import org.objectweb.jalisto.se.api.query.Index;
29 import org.objectweb.jalisto.se.api.query.IndexManager;
30 import org.objectweb.jalisto.se.impl.InFileAddress;
31 import org.objectweb.jalisto.se.impl.meta.ClassDescriptionImpl;
32
33 public class NavigationInfo {
34
35     public NavigationInfo(ClassDescription meta, String JavaDoc[] fieldNames) {
36         this.index = meta.getIndex(fieldNames[0]);
37         this.meta = (ClassDescriptionImpl) meta;
38     }
39
40     public int getIndex() {
41         return index;
42     }
43
44     public ClassDescription getMeta() {
45         return meta;
46     }
47
48     public FielComparator getComparator() {
49         return meta.getComparator(index);
50     }
51
52     public boolean isIndexDefined() {
53         return meta.isIndexDefined(index);
54     }
55
56     public InFileAddress getIndexIfa() {
57         return meta.getIndexIfa(index);
58     }
59
60     public Index getIndex(IndexManager indexManager) {
61         return indexManager.getIndex(meta, index);
62     }
63
64     private int index;
65     private ClassDescriptionImpl meta;
66 }
67
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