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org.perfectjpattern.jee.integration.dao.TestJtaTransactionStrategy.testGetTransaction org.perfectjpattern.jee.integration.dao.TestJtaTransactionStrategy.testGetTransaction | 1 PASS | |
1 | //---------------------------------------------------------------------- | |
2 | // | |
3 | // PerfectJPattern: "Design patterns are good but components are better!" | |
4 | // JtaTransactionStrategy.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.jee.integration.dao; | |
22 | ||
23 | import javax.transaction.*; | |
24 | ||
25 | import org.apache.commons.lang.*; | |
26 | import org.perfectjpattern.core.api.structural.adapter.*; | |
27 | import org.perfectjpattern.core.structural.adapter.*; | |
28 | import org.perfectjpattern.jee.api.business.servicelocator.*; | |
29 | import org.perfectjpattern.jee.api.integration.dao.*; | |
30 | import org.perfectjpattern.jee.business.servicelocator.*; | |
31 | ||
32 | /** | |
33 | * Concrete implementation of {@link ITransactionStrategy} targeting the | |
34 | * use of {@link UserTransaction} | |
35 | * | |
36 | * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a> | |
37 | * @version $Revision: 1.0 $Date: Feb 19, 2009 1:51:31 PM $ | |
38 | */ | |
39 | public | |
40 | class JtaTransactionStrategy | |
41 | implements ITransactionStrategy | |
42 | { | |
43 | //------------------------------------------------------------------------ | |
44 | // public | |
45 | //------------------------------------------------------------------------ | |
46 | /** | |
47 | * Constructs a {@link JtaTransactionStrategy} using the default | |
48 | * UserTransaction service name "java:comp/UserTransaction" | |
49 | */ | |
50 | 1 | public |
51 | JtaTransactionStrategy() | |
52 | { | |
53 | 1 | this("java:comp/UserTransaction"); |
54 | } | |
55 | ||
56 | //------------------------------------------------------------------------ | |
57 | /** | |
58 | * Constructs a {@link JtaTransactionStrategy} from the UserTransaction | |
59 | * service name provided. It can be server-specific. | |
60 | * | |
61 | * @param aServiceName The Service name | |
62 | * @throws IllegalArgumentException 'aServiceName' must not be null | |
63 | */ | |
64 | 1 | public |
65 | JtaTransactionStrategy(String aServiceName) | |
66 | throws IllegalArgumentException | |
67 | { | |
68 | 1 | Validate.notNull(aServiceName, "'aServiceName' must not be null"); |
69 | ||
70 | 1 | theServiceName = aServiceName; |
71 | } | |
72 | ||
73 | //------------------------------------------------------------------------ | |
74 | /** | |
75 | * {@inheritDoc} | |
76 | */ | |
77 | 0 | public ITransaction |
78 | getTransaction() | |
79 | { | |
80 | 0 | IServiceLocator myServiceLocator = ServiceLocator.getInstance(); |
81 | ||
82 | 0 | UserTransaction myUserTransaction = myServiceLocator.locate( |
83 | theServiceName); | |
84 | ||
85 | 0 | if (theTransactionAdapter == null || theTransactionAdapter. |
86 | getAdaptee() != myUserTransaction) | |
87 | { | |
88 | 0 | theTransactionAdapter = new Adapter<ITransaction, UserTransaction>( |
89 | ITransaction.class, myUserTransaction); | |
90 | } | |
91 | ||
92 | 0 | return theTransactionAdapter.getTarget(); |
93 | } | |
94 | ||
95 | //------------------------------------------------------------------------ | |
96 | // members | |
97 | //------------------------------------------------------------------------ | |
98 | private final String theServiceName; | |
99 | private IAdapter<ITransaction, UserTransaction> theTransactionAdapter; | |
100 | } |
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