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Java > Open Source Codes > org > objectweb > tribe > gms > discovery > DiscoveryService


1 /**
2  * Tribe: Group communication library.
3  * Copyright (C) 2004 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Contact: tribe@objectweb.org
6  *
7  * This library is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU Lesser General Public License as published by the
9  * Free Software Foundation; either version 2.1 of the License, or any later
10  * version.
11  *
12  * This library is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
15  * for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this library; if not, write to the Free Software Foundation,
19  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20  *
21  * Initial developer(s): Emmanuel Cecchet.
22  * Contributor(s): ______________________.
23  */
24
25 package org.objectweb.tribe.gms.discovery;
26
27 import org.objectweb.tribe.common.GroupIdentifier;
28
29 /**
30  * This class defines a DiscoveryService
31  *
32  * @author <a HREF="mailto:Emmanuel.Cecchet@inria.fr">Emmanuel Cecchet </a>
33  * @version 1.0
34  */
35 public interface DiscoveryService
36 {
37   /**
38    * Discover a group based on its identifier.
39    *
40    * @param gid group identifier
41    */
42   void sendGroupDiscovery(GroupIdentifier gid);
43
44   /**
45    * Register a new DiscoveryListener.
46    *
47    * @param listener the listener to add
48    */
49   void registerDiscoveryListener(DiscoveryListener listener);
50
51   /**
52    * Unregister a DiscoveryListener.
53    *
54    * @param listener the listener to remove
55    * @return true if the listener was registered, false otherwise
56    */
57   boolean unregisterDiscoveryListener(DiscoveryListener listener);
58
59 }
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