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Java > Open Source Codes > org > dom4j > tree > NamespaceCacheTest


1 /*
2  * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
3  *
4  * This software is open source.
5  * See the bottom of this file for the licence.
6  */
7
8 package org.dom4j.tree;
9
10 import junit.textui.TestRunner;
11
12 import org.dom4j.AbstractTestCase;
13 import org.dom4j.Namespace;
14
15 /**
16  * A test harness to test the performance of the NamespaceCache
17  *
18  * @author <a HREF="mailto:bfinnell@users.sourceforge.net">Brett Finnell </a>
19  */
20 public class NamespaceCacheTest extends AbstractTestCase {
21     private static final int THREADCOUNT = 50;
22
23     private static final int ITERATIONCOUNT = 10000;
24
25     public static void main(String JavaDoc[] args) {
26         TestRunner.run(NamespaceCacheTest.class);
27     }
28
29     // Test case(s)
30 // -------------------------------------------------------------------------
31 public void testGetSameNamespaceSingleThread() {
32         long start = System.currentTimeMillis();
33         SameNSTest test = new SameNSTest();
34         test.run();
35
36         long end = System.currentTimeMillis();
37         System.out.println("Same NS Single took " + (end - start) + " ms");
38     }
39
40     public void testGetSameNamespaceMultiThread() throws Exception JavaDoc {
41         long start = System.currentTimeMillis();
42         runMultiThreadedTest(new SameNSTest());
43
44         long end = System.currentTimeMillis();
45         System.out.println("Different NS Single took " + (end - start) + " ms");
46     }
47
48     public void testGetNewNamespaceSingleThread() {
49         long start = System.currentTimeMillis();
50         DifferentNSTest test = new DifferentNSTest();
51         test.run();
52
53         long end = System.currentTimeMillis();
54         System.out.println("Same NS Multi took " + (end - start) + " ms");
55     }
56
57     public void testGetNewNamespaceMultiThread() throws Exception JavaDoc {
58         long start = System.currentTimeMillis();
59         runMultiThreadedTest(new DifferentNSTest());
60
61         long end = System.currentTimeMillis();
62         System.out.println("Different NS Multi took " + (end - start) + " ms");
63     }
64
65     private void runMultiThreadedTest(Runnable JavaDoc test) throws Exception JavaDoc {
66         // Make the threads
67 Thread JavaDoc[] threads = new Thread JavaDoc[THREADCOUNT];
68
69         for (int i = 0; i < THREADCOUNT; i++) {
70             threads[i] = new Thread JavaDoc(new SameNSTest());
71         }
72
73         // Start the threads
74 for (int j = 0; j < THREADCOUNT; j++) {
75             threads[j].start();
76         }
77
78         // Join with the threads
79 for (int k = 0; k < THREADCOUNT; k++) {
80             threads[k].join();
81         }
82     }
83
84     private class SameNSTest implements Runnable JavaDoc {
85         public void run() {
86             NamespaceCache cache = new NamespaceCache();
87
88             for (int i = 0; i < ITERATIONCOUNT; i++) {
89                 Namespace ns = cache.get("prefix", "uri");
90             }
91         }
92     }
93
94     private class DifferentNSTest implements Runnable JavaDoc {
95         public void run() {
96             NamespaceCache cache = new NamespaceCache();
97
98             for (int i = 0; i < ITERATIONCOUNT; i++) {
99                 Namespace ns = cache.get("prefix", Integer.toString(i));
100             }
101         }
102     }
103 }
104
105 /*
106  * Redistribution and use of this software and associated documentation
107  * ("Software"), with or without modification, are permitted provided that the
108  * following conditions are met:
109  *
110  * 1. Redistributions of source code must retain copyright statements and
111  * notices. Redistributions must also contain a copy of this document.
112  *
113  * 2. Redistributions in binary form must reproduce the above copyright notice,
114  * this list of conditions and the following disclaimer in the documentation
115  * and/or other materials provided with the distribution.
116  *
117  * 3. The name "DOM4J" must not be used to endorse or promote products derived
118  * from this Software without prior written permission of MetaStuff, Ltd. For
119  * written permission, please contact dom4j-info@metastuff.com.
120  *
121  * 4. Products derived from this Software may not be called "DOM4J" nor may
122  * "DOM4J" appear in their names without prior written permission of MetaStuff,
123  * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
124  *
125  * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
126  *
127  * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
128  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
129  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
130  * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
131  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
132  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
133  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
134  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
135  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
136  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
137  * POSSIBILITY OF SUCH DAMAGE.
138  *
139  * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
140  */
141
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