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Java > Open Source Codes > com > db4o > nativequery > expr > cmp > ComparisonOperandDescendant


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */

21 package com.db4o.nativequery.expr.cmp;
22
23 public abstract class ComparisonOperandDescendant implements ComparisonOperandAnchor {
24     private ComparisonOperandAnchor _parent;
25     
26     protected ComparisonOperandDescendant(ComparisonOperandAnchor _parent) {
27         this._parent = _parent;
28     }
29
30     public final ComparisonOperandAnchor parent() {
31         return _parent;
32     }
33     
34     public final ComparisonOperandAnchor root() {
35         return _parent.root();
36     }
37     
38     public boolean equals(Object JavaDoc obj) {
39         if(this==obj) {
40             return true;
41         }
42         if(obj==null||getClass()!=obj.getClass()) {
43             return false;
44         }
45         ComparisonOperandDescendant casted=(ComparisonOperandDescendant)obj;
46         return _parent.equals(casted._parent);
47     }
48     
49     public int hashCode() {
50         return _parent.hashCode();
51     }
52     
53     public String JavaDoc toString() {
54         return _parent.toString();
55     }
56 }
57
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