1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 Chris Kimpton
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * Chris Kimpton (kimtoc@techie.com)
42 *
43 */
44 package org.melati.poem.odmg;
45
46 /**
47 * An ODMG Transaction.
48 */
49
50 final class Transaction implements org.odmg.Transaction {
51
52 private Database _db = null;
53
54 static Transaction getNewTransaction(org.odmg.Database db) {
55 return new Transaction(db);
56 }
57 private Transaction(org.odmg.Database db) {
58 _db = (Database)db;
59 }
60
61 //private org.melati.util.Transaction _tx = null;
62 private Object _tx = null;
63
64 public void begin()
65 throws org.odmg.ODMGRuntimeException {
66 if (_tx != null) throw new org.odmg.TransactionInProgressException();
67
68 try {
69 _tx = new Object();
70 // any issues with always using 1?
71 _db.getPoemDatabase().beginSession(org.melati.poem.AccessToken.root);
72 } catch (org.odmg.ODMGRuntimeException exc) {
73 throw new org.odmg.ODMGRuntimeException(exc.getMessage());
74 }
75 }
76
77 public void commit() {
78 if (_tx == null) throw new org.odmg.TransactionNotInProgressException();
79
80 try {
81 _db.getPoemDatabase().endSession();
82 _tx = null;
83 } catch (org.odmg.ODMGRuntimeException exc) {
84 throw new org.odmg.ODMGRuntimeException(exc.getMessage());
85 }
86 }
87
88 public void join() {
89 throw new org.odmg.NotImplementedException();
90 }
91
92 public void abort() {
93 throw new org.odmg.NotImplementedException();
94 }
95
96 public void checkpoint() {
97 throw new org.odmg.NotImplementedException();
98 }
99
100 public void leave() {
101 throw new org.odmg.NotImplementedException();
102 }
103
104 public void lock(Object obj, int code) {
105 throw new org.odmg.NotImplementedException();
106 }
107
108 public boolean tryLock(Object obj, int code) {
109 throw new org.odmg.NotImplementedException();
110 }
111
112 public boolean isOpen() {
113 throw new org.odmg.NotImplementedException();
114 }
115 }