01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: 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.operand;
22:
23: public abstract class ComparisonOperandDescendant implements
24: ComparisonOperandAnchor {
25: private ComparisonOperandAnchor _parent;
26:
27: protected ComparisonOperandDescendant(
28: ComparisonOperandAnchor _parent) {
29: this ._parent = _parent;
30: }
31:
32: public final ComparisonOperandAnchor parent() {
33: return _parent;
34: }
35:
36: public final ComparisonOperandAnchor root() {
37: return _parent.root();
38: }
39:
40: public boolean equals(Object obj) {
41: if (this == obj) {
42: return true;
43: }
44: if (obj == null || getClass() != obj.getClass()) {
45: return false;
46: }
47: ComparisonOperandDescendant casted = (ComparisonOperandDescendant) obj;
48: return _parent.equals(casted._parent);
49: }
50:
51: public int hashCode() {
52: return _parent.hashCode();
53: }
54:
55: public String toString() {
56: return _parent.toString();
57: }
58: }
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