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Coverage timestamp: Thu Jun 22 2006 14:24:50 CEST

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file stats:	LOC:	129		Methods:	2
	NCLOC:	54		Classes:	1

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Methods

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CMTNotSupportedTransactionInterceptor.java

1		/**
2		* EasyBeans
3		* Copyright (C) 2006 Bull S.A.S.
4		* Contact: easybeans@objectweb.org
5		*
6		* This library is free software; you can redistribute it and/or
7		* modify it under the terms of the GNU Lesser General Public
8		* License as published by the Free Software Foundation; either
9		* version 2.1 of the License, or any later version.
10		*
11		* This library is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14		* Lesser General Public License for more details.
15		*
16		* You should have received a copy of the GNU Lesser General Public
17		* License along with this library; if not, write to the Free Software
18		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19		* USA
20		*
21		* --------------------------------------------------------------------------
22		* $Id: CMTNotSupportedTransactionInterceptor.java 9 2006-02-19 18:53:32Z benoitf $
23		* --------------------------------------------------------------------------
24		*/
25
26		package org.objectweb.easybeans.transaction.interceptors;
27
28		import javax.ejb.EJBException;
29		import javax.transaction.InvalidTransactionException;
30		import javax.transaction.SystemException;
31		import javax.transaction.Transaction;
32
33		import org.objectweb.easybeans.api.EasyBeansInvocationContext;
34		import org.objectweb.easybeans.log.JLog;
35		import org.objectweb.easybeans.log.JLogFactory;
36
37		/**
38		* Defines an interceptor for method using the NOT_SUPPORTED attribute.
39		* @author Florent Benoit
40		*/
41		public class CMTNotSupportedTransactionInterceptor extends AbsTransactionInterceptor {
42
43		/**
44		* Logger.
45		*/
46		private JLog logger = JLogFactory.getLog(CMTNotSupportedTransactionInterceptor.class);
47
48		/**
49		* Constructor.<br>
50		* Acquire the transaction manager.
51		*/
52	0	public CMTNotSupportedTransactionInterceptor() {
53	0	super();
54		}
55
56		/**
57		* Execute transaction as specified with the NOT_SUPPORTED attribute.
58		* @param invocationContext context with useful attributes on the current
59		* invocation
60		* @return result of the next invocation (to chain interceptors)
61		* @throws Exception if interceptor fails
62		* @see <a href="http://www.jcp.org/en/jsr/detail?id=220">EJB 3.0
63		* specification ?12.6.2.1</a>
64		*/
65	0	@Override
66		public Object intercept(final EasyBeansInvocationContext invocationContext) throws Exception {
67	0	logger.debug("Calling Not Supported TX interceptor");
68
69		// Get current transaction
70	0	Transaction transaction;
71	0	try {
72	0	transaction = getTransactionManager().getTransaction();
73		} catch (SystemException se) {
74	0	throw new EJBException("Cannot get the current transaction on transaction manager.", se);
75		}
76
77	0	logger.debug("Transaction found = {0}", transaction);
78
79		/*
80		* If a client calls with a transaction context, the container suspends
81		* the association of the transaction context with the current thread
82		* before invoking the enterprise bean?s business method.
83		*/
84
85	0	Transaction suspendedTransaction = null;
86	0	if (transaction != null) {
87	0	try {
88	0	logger.debug("Suspending transaction {0}", transaction);
89	0	suspendedTransaction = getTransactionManager().suspend();
90		} catch (SystemException se) {
91	0	throw new EJBException("Cannot call suspend() on the transaction manager.", se);
92		}
93		}
94
95		/*
96		* The suspended transaction context of the client is not passed to the
97		* resource managers or other enterprise bean objects that are invoked
98		* from the business method.
99		*/
100	0	try {
101	0	return invocationContext.proceed();
102		} finally {
103
104		/*
105		* The container resumes the suspended association when the business
106		* method has completed.
107		*/
108	0	if (suspendedTransaction != null) {
109
110	0	logger.debug("Resuming transaction {0}", transaction);
111
112	0	try {
113	0	getTransactionManager().resume(suspendedTransaction);
114		} catch (InvalidTransactionException ite) {
115	0	throw new EJBException(
116		"Cannot call resume() on the given transaction. There is an invalid transaction", ite);
117		} catch (IllegalStateException ise) {
118	0	throw new EJBException(
119		"Cannot call resume() on the given transaction. There is another associated transaction",
120		ise);
121		} catch (SystemException se) {
122	0	throw new EJBException("Cannot call resume() on the given transaction. Unexpected error condition",
123		se);
124		}
125		}
126		}
127		}
128
129		}