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.channel.interfaces.Channel;
25: import org.jboss.messaging.interfaces.Consumer;
26: import org.jboss.messaging.interfaces.MessageReference;
27:
28: /**
29: * An abstract channel
30: *
31: * @author <a href="mailto:adrian@jboss.org">Adrian Brock</a>
32: * @version $Revision: 57195 $
33: */
34: public abstract class AbstractChannel implements Channel {
35: // Constants -----------------------------------------------------
36:
37: // Attributes ----------------------------------------------------
38:
39: /** The consumer */
40: protected Consumer consumer;
41:
42: /** The channel handler */
43: protected ChannelHandler handler;
44:
45: // Static --------------------------------------------------------
46:
47: // Constructors --------------------------------------------------
48:
49: /**
50: * Create a new AbstractChannel.
51: *
52: * @param consumer the consumer
53: * @param handler the handler
54: */
55: public AbstractChannel(Consumer consumer, ChannelHandler handler) {
56: this .consumer = consumer;
57: this .handler = handler;
58: }
59:
60: // Public --------------------------------------------------------
61:
62: // Channel implementation ----------------------------------------
63:
64: public void send(MessageReference message) {
65: handler.addMessage(message);
66: }
67:
68: public MessageReference receive(long wait) {
69: // There must be a message immediately available
70: if (wait == -1)
71: return handler.removeMessage(consumer);
72:
73: // Wait for a message
74: handler.waitMessage(consumer, wait);
75: return null;
76: }
77:
78: public void close() {
79: handler.stopWaitMessage(consumer);
80: }
81:
82: // Protected -----------------------------------------------------
83:
84: // Package Private -----------------------------------------------
85:
86: // Private -------------------------------------------------------
87:
88: // Inner Classes -------------------------------------------------
89: }
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