01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software 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 GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jboss.aspects.txlock;
23:
24: import org.jboss.aop.joinpoint.Invocation;
25: import org.jboss.logging.Logger;
26:
27: import javax.transaction.Transaction;
28: import javax.transaction.TransactionManager;
29:
30: /**
31: * This interceptor handles chooses an object to invoke
32: * on based on the transaction
33: *
34: * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
35: * @version $Revision: 57186 $
36: */
37: public class TxLockInterceptor implements
38: org.jboss.aop.advice.Interceptor {
39: /**
40: * Logging instance
41: */
42: protected Logger log = Logger.getLogger(this .getClass());
43:
44: private final TransactionManager tm;
45: private final QueuedTxLock lock;
46:
47: public TxLockInterceptor(TransactionManager tm, QueuedTxLock lock) {
48: this .tm = tm;
49: this .lock = lock;
50: }
51:
52: public String getName() {
53: return "TxLockInterceptor";
54: }
55:
56: /**
57: *
58: */
59: public Object invoke(Invocation invocation) throws Throwable {
60: Transaction tx = tm.getTransaction();
61: if (tx == null)
62: return invocation.invokeNext();
63:
64: else {
65: }
66:
67: lock.schedule(tx, invocation);
68: try {
69: return invocation.invokeNext();
70: } finally {
71: lock.endInvocation(tx);
72: }
73: }
74:
75: }
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