1 | /* |
2 | Copyright (C) 2005 MySQL AB |
3 | |
4 | This program is free software; you can redistribute it and/or modify |
5 | it under the terms of version 2 of the GNU General Public License as |
6 | published by the Free Software Foundation. |
7 | |
8 | There are special exceptions to the terms and conditions of the GPL |
9 | as it is applied to this software. View the full text of the |
10 | exception in file EXCEPTIONS-CONNECTOR-J in the directory of this |
11 | software distribution. |
12 | |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 | |
22 | */ |
23 | |
24 | package com.mysql.jdbc.jdbc2.optional; |
25 | |
26 | import javax.transaction.xa.Xid; |
27 | |
28 | /** |
29 | * Implementation of the XID interface for MySQL XA |
30 | * |
31 | * @version $Id: $ |
32 | */ |
33 | public class MysqlXid implements Xid { |
34 | |
35 | int hash = 0; |
36 | |
37 | byte[] myBqual; |
38 | |
39 | int myFormatId; |
40 | |
41 | byte[] myGtrid; |
42 | |
43 | public MysqlXid(byte[] gtrid, byte[] bqual, int formatId) { |
44 | this.myGtrid = gtrid; |
45 | this.myBqual = bqual; |
46 | this.myFormatId = formatId; |
47 | } |
48 | |
49 | public boolean equals(Object another) { |
50 | |
51 | if (another instanceof Xid) { |
52 | Xid anotherAsXid = (Xid) another; |
53 | |
54 | if (this.myFormatId != anotherAsXid.getFormatId()) { |
55 | return false; |
56 | } |
57 | |
58 | byte[] otherBqual = anotherAsXid.getBranchQualifier(); |
59 | byte[] otherGtrid = anotherAsXid.getGlobalTransactionId(); |
60 | |
61 | if (otherGtrid != null && otherGtrid.length == this.myGtrid.length) { |
62 | int length = otherGtrid.length; |
63 | |
64 | for (int i = 0; i < length; i++) { |
65 | if (otherGtrid[i] != this.myGtrid[i]) { |
66 | return false; |
67 | } |
68 | } |
69 | |
70 | if (otherBqual != null && otherBqual.length == myBqual.length) { |
71 | length = otherBqual.length; |
72 | |
73 | for (int i = 0; i < length; i++) { |
74 | if (otherBqual[i] != this.myBqual[i]) { |
75 | return false; |
76 | } |
77 | } |
78 | } else { |
79 | return false; |
80 | } |
81 | |
82 | return true; |
83 | } else { |
84 | return false; |
85 | } |
86 | } else { |
87 | return false; |
88 | } |
89 | } |
90 | |
91 | public byte[] getBranchQualifier() { |
92 | return this.myBqual; |
93 | } |
94 | |
95 | public int getFormatId() { |
96 | return this.myFormatId; |
97 | }; |
98 | |
99 | public byte[] getGlobalTransactionId() { |
100 | return this.myGtrid; |
101 | } |
102 | |
103 | public synchronized int hashCode() { |
104 | if (this.hash == 0) { |
105 | for (int i = 0; i < this.myGtrid.length; i++) { |
106 | this.hash = 33 * this.hash + this.myGtrid[i]; |
107 | } |
108 | } |
109 | |
110 | return this.hash; |
111 | } |
112 | } |