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org.perfectjpattern.core.behavioral.observer.TestAsynchronousSubject.testAsynchronousNotification org.perfectjpattern.core.behavioral.observer.TestAsynchronousSubject.testAsynchronousNotification | 1 PASS | |
1 | //---------------------------------------------------------------------- | |
2 | // | |
3 | // PerfectJPattern: "Design patterns are good but components are better!" | |
4 | // SynchronizedDecorator.java Copyright (c) 2009 Giovanni Azua Garcia | |
5 | // bravegag@hotmail.com | |
6 | // | |
7 | // This program is free software; you can redistribute it and/or | |
8 | // modify it under the terms of the GNU General Public License | |
9 | // as published by the Free Software Foundation; either version 3 | |
10 | // of the License, or (at your option) any later version. | |
11 | // | |
12 | // This program is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | // | |
17 | // You should have received a copy of the GNU General Public License | |
18 | // along with this program; if not, see <http://www.gnu.org/licenses/>. | |
19 | // | |
20 | //---------------------------------------------------------------------- | |
21 | package org.perfectjpattern.core.structural.proxy; | |
22 | ||
23 | import java.lang.reflect.*; | |
24 | import java.util.concurrent.locks.*; | |
25 | ||
26 | /** | |
27 | * Concrete componentized implementation of <code>IDecorator<C></code> | |
28 | * that provides synchronized protection to any class type. | |
29 | * | |
30 | * @param <C> Decorated Component type | |
31 | * | |
32 | * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a> | |
33 | * @version $Revision: 1.0 $ $Date: Nov 25, 2007 4:11:47 PM $ | |
34 | */ | |
35 | public | |
36 | class SynchronizedProxy<C> | |
37 | extends AbstractProxy<C> | |
38 | { | |
39 | //------------------------------------------------------------------------ | |
40 | // members | |
41 | //------------------------------------------------------------------------ | |
42 | /** | |
43 | * Creates a <code>SynchronizedDecorator<E></code> from a Component | |
44 | * interface type and instance. | |
45 | * | |
46 | * @param anInterface The Component interface type. | |
47 | * @param aComponent The Component instance to Decorate. | |
48 | * @throws IllegalArgumentException 'anInterface' must not be null. | |
49 | * @throws IllegalArgumentException 'anInterface' must be an interface type. | |
50 | * @throws IllegalArgumentException 'aComponent' must not be null. | |
51 | */ | |
52 | 3 | public |
53 | SynchronizedProxy(Class<C> anInterface, C aComponent) | |
54 | throws IllegalArgumentException | |
55 | { | |
56 | 3 | super(anInterface, aComponent); |
57 | } | |
58 | ||
59 | //------------------------------------------------------------------------ | |
60 | /** | |
61 | * {@inheritDoc} | |
62 | */ | |
63 | 4 | @Override |
64 | protected Object | |
65 | invokeUnderlying(Method anMethod, Object[] anArguments) | |
66 | throws Throwable | |
67 | { | |
68 | 4 | try |
69 | { | |
70 | 4 | theLock.lock(); |
71 | ||
72 | 4 | return super.invokeUnderlying(anMethod, anArguments); |
73 | } | |
74 | finally | |
75 | { | |
76 | 4 | theLock.unlock(); |
77 | } | |
78 | } | |
79 | ||
80 | //------------------------------------------------------------------------ | |
81 | // members | |
82 | //------------------------------------------------------------------------ | |
83 | private final Lock theLock = new ReentrantLock(); | |
84 | } |
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