001    /**
002     *   GRANITE DATA SERVICES
003     *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004     *
005     *   This file is part of Granite Data Services.
006     *
007     *   Granite Data Services is free software; you can redistribute it and/or modify
008     *   it under the terms of the GNU Library General Public License as published by
009     *   the Free Software Foundation; either version 2 of the License, or (at your
010     *   option) any later version.
011     *
012     *   Granite Data Services is distributed in the hope that it will be useful, but
013     *   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014     *   FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015     *   for more details.
016     *
017     *   You should have received a copy of the GNU Library General Public License
018     *   along with this library; if not, see <http://www.gnu.org/licenses/>.
019     */
020    package org.granite.client.messaging.channel;
021    
022    import java.net.URI;
023    
024    import org.granite.client.messaging.transport.Transport;
025    
026    /**
027     * @author Franck WOLFF
028     */
029    public abstract class AbstractChannel<T extends Transport> implements Channel {
030            
031            protected final T transport;
032            protected final String id;
033            protected final URI uri;
034            
035            protected volatile String clientId;
036    
037            protected volatile Credentials credentials = null;
038            protected volatile Object transportData = null;
039            
040            public AbstractChannel(T transport, String id, URI uri) {
041                    if (transport == null || id == null || uri == null)
042                            throw new NullPointerException("Transport, id and uri must be not null");
043                    
044                    this.transport = transport;
045                    this.id = id;
046                    this.uri = uri;
047            }
048    
049            @Override
050            public T getTransport() {
051                    return transport;
052            }
053    
054            @Override
055            public String getId() {
056                    return id;
057            }
058    
059            @Override
060            public URI getUri() {
061                    return uri;
062            }
063    
064            public String getClientId() {
065                    return clientId;
066            }
067    
068            @Override
069            public void setCredentials(Credentials credentials) {
070                    this.credentials = credentials;
071            }
072            
073            @Override
074            public Credentials getCredentials() {
075                    return credentials;
076            }
077    
078            @SuppressWarnings("unchecked")
079            @Override
080            public <D> D getTransportData() {
081                    return (D)transportData;
082            }
083    
084            @Override
085            public void setTransportData(Object data) {
086                    this.transportData = data;
087            }
088    }