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.tm;
23:
24: import javax.transaction.Transaction;
25:
26: /**
27: * Implementations of this interface are used for getting
28: * a transaction propagation context at the client-side.
29: * We need a specific implementation of this interface for
30: * each kind of DTM we are going to interoperate with. (So
31: * we may have 20 new classes if we are going to interoperate
32: * with 20 different kinds of distributed transaction
33: * managers.)
34: * The reason for having the methods in this interface return
35: * Object is that we do not really know what kind of transaction
36: * propagation context is returned.
37: *
38: * @see TransactionPropagationContextImporter
39: * @author <a href="mailto:osh@sparre.dk">Ole Husgaard</a>
40: * @version $Revision: 57208 $
41: */
42: public interface TransactionPropagationContextFactory {
43: /**
44: * Return a transaction propagation context for the transaction
45: * currently associated with the invoking thread, or <code>null</code>
46: * if the invoking thread is not associated with a transaction.
47: */
48: public Object getTransactionPropagationContext();
49:
50: /**
51: * Return a transaction propagation context for the transaction
52: * given as an argument, or <code>null</code>
53: * if the argument is <code>null</code> or of a type unknown to
54: * this factory.
55: */
56: public Object getTransactionPropagationContext(Transaction tx);
57:
58: }
|