01: package com.quadcap.sql.io;
02:
03: /* Copyright 1999 - 2003 Quadcap Software. All rights reserved.
04: *
05: * This software is distributed under the Quadcap Free Software License.
06: * This software may be used or modified for any purpose, personal or
07: * commercial. Open Source redistributions are permitted. Commercial
08: * redistribution of larger works derived from, or works which bundle
09: * this software requires a "Commercial Redistribution License"; see
10: * http://www.quadcap.com/purchase.
11: *
12: * Redistributions qualify as "Open Source" under one of the following terms:
13: *
14: * Redistributions are made at no charge beyond the reasonable cost of
15: * materials and delivery.
16: *
17: * Redistributions are accompanied by a copy of the Source Code or by an
18: * irrevocable offer to provide a copy of the Source Code for up to three
19: * years at the cost of materials and delivery. Such redistributions
20: * must allow further use, modification, and redistribution of the Source
21: * Code under substantially the same terms as this license.
22: *
23: * Redistributions of source code must retain the copyright notices as they
24: * appear in each source code file, these license terms, and the
25: * disclaimer/limitation of liability set forth as paragraph 6 below.
26: *
27: * Redistributions in binary form must reproduce this Copyright Notice,
28: * these license terms, and the disclaimer/limitation of liability set
29: * forth as paragraph 6 below, in the documentation and/or other materials
30: * provided with the distribution.
31: *
32: * The Software is provided on an "AS IS" basis. No warranty is
33: * provided that the Software is free of defects, or fit for a
34: * particular purpose.
35: *
36: * Limitation of Liability. Quadcap Software shall not be liable
37: * for any damages suffered by the Licensee or any third party resulting
38: * from use of the Software.
39: */
40:
41: import java.io.EOFException;
42: import java.io.Externalizable;
43: import java.io.InputStream;
44: import java.io.InvalidClassException;
45: import java.io.IOException;
46: import java.io.ObjectInput;
47:
48: import java.util.Vector;
49:
50: import com.quadcap.util.Debug;
51:
52: /**
53: * ObjectInputStream based on this package's serialization format.
54: *
55: * @author Stan Bailes
56: */
57: public class ObjectInputStream extends DataInputStream implements
58: ObjectInput {
59: public ObjectInputStream(InputStream is) {
60: super (is);
61: }
62:
63: public Object readObject() throws IOException,
64: ClassNotFoundException {
65: int code = read();
66: if (code == 0)
67: return null;
68: if (code == -1) {
69: throw new EOFException();
70: }
71: Extern ext = null;
72: try {
73: ext = Extern.get(code);
74: } catch (Throwable e) {
75: ext = null;
76: }
77: if (ext == null) {
78: throw new IOException("Corrupted stream: bad code: " + code);
79: }
80: Object ret = ext.readObject(this);
81: return ret;
82: }
83: }
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