Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
CompressionHelper |
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| 2.3333333333333335;2.333 | ||||
CompressionHelper$1 |
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| 2.3333333333333335;2.333 |
1 | /* | |
2 | * $Id: CompressionHelper.java 19191 2010-08-25 21:05:23Z tcarlson $ | |
3 | * -------------------------------------------------------------------------------------- | |
4 | * Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com | |
5 | * | |
6 | * The software in this package is published under the terms of the CPAL v1.0 | |
7 | * license, a copy of which has been included with this distribution in the | |
8 | * LICENSE.txt file. | |
9 | */ | |
10 | ||
11 | package org.mule.util.compression; | |
12 | ||
13 | import org.mule.util.ClassUtils; | |
14 | ||
15 | import java.security.AccessController; | |
16 | import java.security.PrivilegedAction; | |
17 | ||
18 | import org.apache.commons.logging.Log; | |
19 | import org.apache.commons.logging.LogFactory; | |
20 | ||
21 | /** | |
22 | * <code>CompressionHelper</code> a static class that provides facilities for | |
23 | * compressing and uncompressing byte arrays | |
24 | */ | |
25 | ||
26 | 0 | public final class CompressionHelper |
27 | { | |
28 | /** | |
29 | * logger used by this class | |
30 | */ | |
31 | 0 | private static Log logger = LogFactory.getLog(CompressionHelper.class); |
32 | ||
33 | private static CompressionStrategy defaultStrategy; | |
34 | ||
35 | /** Do not instanciate. */ | |
36 | private CompressionHelper () | |
37 | 0 | { |
38 | // no-op | |
39 | 0 | } |
40 | ||
41 | public static synchronized CompressionStrategy getDefaultCompressionStrategy() | |
42 | { | |
43 | 0 | if (defaultStrategy == null) |
44 | { | |
45 | 0 | defaultStrategy = (CompressionStrategy) AccessController.doPrivileged(new PrivilegedAction() |
46 | 0 | { |
47 | public Object run() | |
48 | { | |
49 | try | |
50 | { | |
51 | 0 | Object o = ClassUtils.loadClass(CompressionStrategy.COMPRESSION_DEFAULT, |
52 | CompressionHelper.class).newInstance(); | |
53 | 0 | if (logger.isDebugEnabled()) |
54 | { | |
55 | 0 | logger.debug("Found CompressionStrategy: " + o.getClass().getName()); |
56 | } | |
57 | 0 | return o; |
58 | } | |
59 | 0 | catch (Exception e) |
60 | { | |
61 | // TODO MULE-863: What should we really do? Document this? | |
62 | 0 | logger.warn("Failed to build compression strategy: " + e.getMessage()); |
63 | } | |
64 | 0 | return null; |
65 | } | |
66 | }); | |
67 | } | |
68 | 0 | return defaultStrategy; |
69 | } | |
70 | ||
71 | } |