| 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 | } |