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.internal;
22:
23: import com.db4o.foundation.Tree;
24:
25: /**
26: * @exclude
27: */
28: public class TreeIntObject extends TreeInt {
29:
30: public Object _object;
31:
32: public TreeIntObject(int a_key) {
33: super (a_key);
34: }
35:
36: public TreeIntObject(int a_key, Object a_object) {
37: super (a_key);
38: _object = a_object;
39: }
40:
41: public Object shallowClone() {
42: return shallowCloneInternal(new TreeIntObject(_key));
43: }
44:
45: protected Tree shallowCloneInternal(Tree tree) {
46: TreeIntObject tio = (TreeIntObject) super
47: .shallowCloneInternal(tree);
48: tio._object = _object;
49: return tio;
50: }
51:
52: public Object getObject() {
53: return _object;
54: }
55:
56: public void setObject(Object obj) {
57: _object = obj;
58: }
59:
60: public Object read(Buffer a_bytes) {
61: int key = a_bytes.readInt();
62: Object obj = null;
63: if (_object instanceof TreeInt) {
64: obj = new TreeReader(a_bytes, (Readable) _object).read();
65: } else {
66: obj = ((Readable) _object).read(a_bytes);
67: }
68: return new TreeIntObject(key, obj);
69: }
70:
71: public void write(Buffer a_writer) {
72: a_writer.writeInt(_key);
73: if (_object == null) {
74: a_writer.writeInt(0);
75: } else {
76: if (_object instanceof TreeInt) {
77: TreeInt.write(a_writer, (TreeInt) _object);
78: } else {
79: ((ReadWriteable) _object).write(a_writer);
80: }
81: }
82: }
83:
84: public int ownLength() {
85: if (_object == null) {
86: return Const4.INT_LENGTH * 2;
87: }
88: return Const4.INT_LENGTH
89: + ((Readable) _object).marshalledLength();
90: }
91:
92: boolean variableLength() {
93: return true;
94: }
95:
96: }
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