Mercurial > hg > blitz_condensed
comparison src/com/go/trove/util/tq/TransactionQueueEvent.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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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 } |