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comparison src/com/go/trove/util/tq/TransactionQueueEvent.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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1 /* ====================================================================
2 * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group
3 * ====================================================================
4 * The Tea Software License, Version 1.1
5 *
6 * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. The end-user documentation included with the redistribution,
21 * if any, must include the following acknowledgment:
22 * "This product includes software developed by the
23 * Walt Disney Internet Group (http://opensource.go.com/)."
24 * Alternately, this acknowledgment may appear in the software itself,
25 * if and wherever such third-party acknowledgments normally appear.
26 *
27 * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
28 * not be used to endorse or promote products derived from this
29 * software without prior written permission. For written
30 * permission, please contact opensource@dig.com.
31 *
32 * 5. Products derived from this software may not be called "Tea",
33 * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
34 * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
35 * written permission of the Walt Disney Internet Group.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
41 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
42 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
44 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
45 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * For more information about Tea, please see http://opensource.go.com/.
51 */
52
53 package com.go.trove.util.tq;
54
55 import java.util.EventObject;
56 import java.util.Date;
57
58 /******************************************************************************
59 * An event that contains information from a {@link TransactionQueue}.
60 * TransactionQueueEvents can be received by implementing a
61 * {@link TransactionQueueListener}.
62 *
63 * @author Brian S O'Neill
64 * @version
65 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 9/25/00 <!-- $-->
66 */
67 public class TransactionQueueEvent extends EventObject {
68 private Transaction mTransaction;
69 private Throwable mThrowable;
70 private long mTimestampMillis;
71 private long mStageDuration;
72
73 private transient Date mTimestamp;
74
75 public TransactionQueueEvent(TransactionQueue source,
76 Transaction transaction) {
77 super(source);
78 mTransaction = transaction;
79 mTimestampMillis = System.currentTimeMillis();
80 }
81
82 public TransactionQueueEvent(TransactionQueue source,
83 Transaction transaction,
84 Throwable throwable) {
85 super(source);
86 mTransaction = transaction;
87 mThrowable = throwable;
88 mTimestampMillis = System.currentTimeMillis();
89 }
90
91 /**
92 * Copies the given event, but gives it a new timestamp and computes a
93 * stage duration.
94 */
95 public TransactionQueueEvent(TransactionQueueEvent event) {
96 super(event.getSource());
97 mTransaction = event.mTransaction;
98 mThrowable = event.mThrowable;
99 mStageDuration = (mTimestampMillis = System.currentTimeMillis()) -
100 event.mTimestampMillis;
101 }
102
103 /**
104 * Copies the given event, but gives it a different throwable, a new
105 * timestamp and computes a stage duration.
106 */
107 public TransactionQueueEvent(TransactionQueueEvent event,
108 Throwable throwable) {
109 super(event.getSource());
110 mTransaction = event.mTransaction;
111 mThrowable = throwable;
112 mStageDuration = (mTimestampMillis = System.currentTimeMillis()) -
113 event.mTimestampMillis;
114 }
115
116 public TransactionQueue getTransactionQueue() {
117 return (TransactionQueue)getSource();
118 }
119
120 /**
121 * Returns the date and time of this event.
122 */
123 public Date getTimestamp() {
124 if (mTimestamp == null) {
125 mTimestamp = new Date(mTimestampMillis);
126 }
127 return mTimestamp;
128 }
129
130 /**
131 * Returns the date and time of this event as milliseconds since 1970.
132 */
133 public long getTimestampMillis() {
134 return mTimestampMillis;
135 }
136
137 /**
138 * Returns the amount of time, in milliseconds, that the transaction was
139 * in a TransactionQueue stage. The implied meaning of this value depends
140 * on how this event was passed to a listener.
141 *
142 * @see TransactionQueueListener
143 */
144 public long getStageDuration() {
145 return mStageDuration;
146 }
147
148 /**
149 * Returns the transaction that was being processed by the
150 * TransactionQueue.
151 */
152 public Transaction getTransaction() {
153 return mTransaction;
154 }
155
156 /**
157 * Returns the exception that occurred while servicing the transaction, if
158 * applicable.
159 */
160 public Throwable getThrowable() {
161 return mThrowable;
162 }
163 }