01: /***** BEGIN LICENSE BLOCK *****
02: * Version: CPL 1.0/GPL 2.0/LGPL 2.1
03: *
04: * The contents of this file are subject to the Common Public
05: * License Version 1.0 (the "License"); you may not use this file
06: * except in compliance with the License. You may obtain a copy of
07: * the License at http://www.eclipse.org/legal/cpl-v10.html
08: *
09: * Software distributed under the License is distributed on an "AS
10: * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11: * implied. See the License for the specific language governing
12: * rights and limitations under the License.
13: *
14: * Copyright (C) 2007 Ola Bini <ola@ologix.com>
15: *
16: * Alternatively, the contents of this file may be used under the terms of
17: * either of the GNU General Public License Version 2 or later (the "GPL"),
18: * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
19: * in which case the provisions of the GPL or the LGPL are applicable instead
20: * of those above. If you wish to allow use of your version of this file only
21: * under the terms of either the GPL or the LGPL, and not to allow others to
22: * use your version of this file under the terms of the CPL, indicate your
23: * decision by deleting the provisions above and replace them with the notice
24: * and other provisions required by the GPL or the LGPL. If you do not delete
25: * the provisions above, a recipient may use your version of this file under
26: * the terms of any one of the CPL, the GPL or the LGPL.
27: ***** END LICENSE BLOCK *****/package org.jvyamlb.nodes;
28:
29: /**
30: * @author <a href="mailto:ola.bini@ki.se">Ola Bini</a>
31: */
32: public abstract class Node {
33: private String tag;
34: private Object value;
35: private int hash = -1;
36:
37: public Node(final String tag, final Object value) {
38: this .tag = tag;
39: this .value = value;
40: }
41:
42: public String getTag() {
43: return this .tag;
44: }
45:
46: public Object getValue() {
47: return this .value;
48: }
49:
50: public void setValue(Object v) {
51: this .value = v;
52: }
53:
54: public int hashCode() {
55: if (hash == -1) {
56: hash = 3;
57: hash += (null == tag) ? 0 : 3 * tag.hashCode();
58: hash += (null == value) ? 0 : 3 * value.hashCode();
59: }
60: return hash;
61: }
62:
63: public boolean equals(final Object oth) {
64: if (oth instanceof Node) {
65: final Node nod = (Node) oth;
66: return ((this .tag != null) ? this .tag.equals(nod.tag)
67: : nod.tag == null)
68: && ((this .value != null) ? this .value
69: .equals(nod.value) : nod.value == null);
70: }
71: return false;
72: }
73:
74: public String toString() {
75: return "#<" + this .getClass().getName() + " (tag=" + getTag()
76: + ", value=" + getValue() + ")>";
77: }
78: }// Node
|