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Java > Open Source Codes > org > exolab > jms > tranlog > StateTransactionLogEntry


1 /**
2  * Redistribution and use of this software and associated documentation
3  * ("Software"), with or without modification, are permitted provided
4  * that the following conditions are met:
5  *
6  * 1. Redistributions of source code must retain copyright
7  * statements and notices. Redistributions must also contain a
8  * copy of this document.
9  *
10  * 2. Redistributions in binary form must reproduce the
11  * above copyright notice, this list of conditions and the
12  * following disclaimer in the documentation and/or other
13  * materials provided with the distribution.
14  *
15  * 3. The name "Exolab" must not be used to endorse or promote
16  * products derived from this Software without prior written
17  * permission of Exoffice Technologies. For written permission,
18  * please contact info@exolab.org.
19  *
20  * 4. Products derived from this Software may not be called "Exolab"
21  * nor may "Exolab" appear in their names without prior written
22  * permission of Exoffice Technologies. Exolab is a registered
23  * trademark of Exoffice Technologies.
24  *
25  * 5. Due credit should be given to the Exolab Project
26  * (http://www.exolab.org/).
27  *
28  * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29  * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32  * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39  * OF THE POSSIBILITY OF SUCH DAMAGE.
40  *
41  * Copyright 2002-2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  *
44  * $Id: StateTransactionLogEntry.java,v 1.1 2004/11/26 01:51:01 tanderson Exp $
45  *
46  * Date Author Changes
47  * 20/11/2001 jima Created
48  */
49 package org.exolab.jms.tranlog;
50
51
52 import java.io.Externalizable JavaDoc;
53 import java.io.IOException JavaDoc;
54 import java.io.ObjectInput JavaDoc;
55 import java.io.ObjectOutput JavaDoc;
56
57
58 public class StateTransactionLogEntry
59     extends BaseTransactionLogEntry
60     implements Externalizable JavaDoc {
61
62     /**
63      * This is the unique id used to identify the version of the class
64      * for the purpose of Serialization
65      */
66     static final long serialVersionUID = 1;
67
68     /**
69      * State of the tranaction, which is identified in the base class
70      */
71     private TransactionState _state;
72
73
74     /**
75      * Default constuctor for serialization
76      */
77     public StateTransactionLogEntry() {
78     }
79
80     /**
81      * Create an instance of this object for the specified transaction
82      * identifier and resource identifier.
83      * <p>
84      * Mark as the transaction being created now
85      *
86      * @param txid - transaction identifier
87      * @param rid - resource identifier
88      */
89     StateTransactionLogEntry(ExternalXid txid, String JavaDoc rid) {
90         this(txid, rid, System.currentTimeMillis());
91     }
92
93     /**
94      * Create an instance of this object for the specified transaction
95      * identifier and resource identifier
96      * <p>
97      * Mark the transaction as being created at the specified time
98      *
99      * @param txid - the transaction identifier
100      * @param rid - the resource identifier
101      * @param created - a timestamp for this transaction
102      */
103     StateTransactionLogEntry(ExternalXid txid, String JavaDoc rid, long created) {
104         super(txid, rid, created);
105     }
106
107     /**
108      * Set the transaction state
109      *
110      * @param state
111      */
112     public void setState(TransactionState state) {
113         _state = state;
114     }
115
116     /**
117      * Get the transaction state
118      *
119      * @return TransactionState
120      */
121     public TransactionState getState() {
122         return _state;
123     }
124
125     // implementation of Externalizable.writeExternal
126 public void writeExternal(ObjectOutput JavaDoc stream)
127         throws IOException JavaDoc {
128         stream.writeLong(serialVersionUID);
129         stream.writeObject(_state);
130         super.writeExternal(stream);
131     }
132
133     // implementation of Externalizable.writeExternal
134 public void readExternal(ObjectInput JavaDoc stream)
135         throws IOException JavaDoc, ClassNotFoundException JavaDoc {
136         long version = stream.readLong();
137         if (version == serialVersionUID) {
138             _state = (TransactionState) stream.readObject();
139             super.readExternal(stream);
140         } else {
141             throw new IOException JavaDoc("No support for StateTransactionLogEntry " +
142                 "with version " + version);
143         }
144     }
145 }
146
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