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.messaging.channel.plugins.handler;
23:
24: import org.jboss.messaging.interfaces.Consumer;
25: import org.jboss.messaging.interfaces.MessageReference;
26:
27: /**
28: * An exclusive channel has just one subscriber
29: *
30: * @author <a href="mailto:adrian@jboss.org">Adrian Brock</a>
31: * @version $Revision: 57195 $
32: */
33: public class ExclusiveChannel extends AbstractChannel {
34: // Constants -----------------------------------------------------
35:
36: // Attributes ----------------------------------------------------
37:
38: // Static --------------------------------------------------------
39:
40: // Constructors --------------------------------------------------
41:
42: /**
43: * Create a new ExclusiveChannel.
44: *
45: * @param consumer the consumer
46: * @param handler the handler
47: */
48: public ExclusiveChannel(Consumer consumer,
49: ExclusiveChannelHandler handler) {
50: super (consumer, handler);
51: }
52:
53: // Public --------------------------------------------------------
54:
55: // AbstractChannel overrides -------------------------------------
56:
57: public void send(MessageReference message) {
58: // We can drop the message if the consumer does not like it
59: if (consumer.accepts(message, false))
60: super .send(message);
61: else
62: message.release();
63: }
64:
65: // Protected -----------------------------------------------------
66:
67: // Package Private -----------------------------------------------
68:
69: // Private -------------------------------------------------------
70:
71: // Inner Classes -------------------------------------------------
72: }
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