| ByteArrayMaker.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.portal.kernel.util;
24
25 import java.io.ByteArrayOutputStream;
26
27 /**
28 * <a href="ByteArrayMaker.java.html"><b><i>View Source</i></b></a>
29 *
30 * @author Harry Mark
31 */
32 public class ByteArrayMaker extends ByteArrayOutputStream {
33
34 static boolean collect = false;
35
36 static {
37 String collectString = System.getProperty(MakerStats.class.getName());
38
39 if (collectString != null) {
40 if (collectString.equals("true")) {
41 collect = true;
42 }
43 }
44 }
45
46 static MakerStats stats = null;
47
48 static {
49 if (collect) {
50 stats = new MakerStats(ByteArrayMaker.class.toString());
51 }
52 }
53
54 static int defaultInitSize = 8000;
55
56 static {
57 String defaultInitSizeString = System.getProperty(
58 ByteArrayMaker.class.getName() + ".initial.size");
59
60 if (defaultInitSizeString != null) {
61 try {
62 defaultInitSize = Integer.parseInt(defaultInitSizeString);
63 }
64 catch (Exception e) {
65 e.printStackTrace();
66 }
67 }
68 }
69
70 public static MakerStats getStatistics() {
71 return stats;
72 }
73
74 public ByteArrayMaker() {
75 super(defaultInitSize);
76
77 if (collect) {
78 _getInfo(new Throwable());
79 }
80 }
81
82 public ByteArrayMaker(int size) {
83 super(size);
84
85 if (collect) {
86 _getInfo(new Throwable());
87 }
88 }
89
90 public byte[] toByteArray() {
91 if (collect) {
92 stats.add(_caller, _initSize, count);
93 }
94
95 return super.toByteArray();
96 }
97
98 public String toString() {
99 return super.toString();
100 }
101
102 private void _getInfo(Throwable t) {
103 _initSize = buf.length;
104
105 StackTraceElement[] elements = t.getStackTrace();
106
107 if (elements.length > 1) {
108 StackTraceElement el = elements[1];
109
110 _caller =
111 el.getClassName() + StringPool.PERIOD + el.getMethodName() +
112 StringPool.COLON + el.getLineNumber();
113 }
114 }
115
116 private int _initSize;
117 private String _caller;
118
119 }