pipeserviceinterface.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
 * $Id: PipeServiceInterface.java,v 1.10 2006/01/13 18:20:01 bondolo Exp $
 *
 * Copyright (c) 2001 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
 *    must not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL SUN MICROSYSTEMS OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 */

package net.jxta.impl.pipe;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Set;

import net.jxta.endpoint.Message;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.peergroup.PeerGroup;
import net.jxta.document.Advertisement;
import net.jxta.id.ID;
import net.jxta.pipe.PipeService;
import net.jxta.pipe.InputPipe;
import net.jxta.pipe.OutputPipe;
import net.jxta.pipe.PipeMsgListener;
import net.jxta.pipe.OutputPipeListener;
import net.jxta.service.Service;
import net.jxta.peer.PeerID;

/**
 * This class implements the NetPipe interface.
 **/
class PipeServiceInterface implements PipeService {
    
    PipeServiceImpl impl;
    
    /**
     * The only authorized constructor.
     */
    public PipeServiceInterface(PipeServiceImpl theRealThing) {
        impl = theRealThing;
    }
    
    /**
     * {@inheritDoc}
     *
     * <p/>Since THIS is already such an object, it returns itself.
     * FIXME: it is kind of absurd to have this method part of the
     * interface but we do not want to define two levels of Service interface
     * just for that.
     *
     * @return ResolverService An interface object that implements
     * this service and nothing more.
     */
    public Service getInterface() {
        return this;
    }
    
    /**
     * {@inheritDoc}
     */
    public Advertisement getImplAdvertisement() {
        return impl.getImplAdvertisement();
    }
    
    /**
     * {@inheritDoc}
     *
     * <p/>FIXME: This is meaningless for the interface object;
     * it is there only to satisfy the requirements of the
     * interface that we implement. Ultimately, the API should define
     * two levels of interfaces: one for the real service implementation
     * and one for the interface object. Right now it feels a bit heavy
     * to so that since the only different between the two would be
     * init() and may-be getName().
     **/
    public void init(PeerGroup pg, ID assignedID, Advertisement impl) {
    }
    
    
    /**
     * {@inheritDoc}
     *
     * <p/>This is here for temporary class hierarchy reasons.
     * it is ALWAYS ignored. By definition, the interface object
     * protects the real object's start/stop methods from being called
     **/
    public int startApp(String[] arg) {
        return 0;
    }
    
    /**
     * {@inheritDoc}
     *
     * <p/>This is here for temporary class hierarchy reasons.
     * it is ALWAYS ignored. By definition, the interface object
     * protects the real object's start/stop methods from being called
     *
     * <p/>This request is currently ignored.
     */
    public void stopApp() {
    }
    
    /**
     *  {@inheritDoc}
     **/
    public InputPipe createInputPipe(PipeAdvertisement adv) throws IOException {
        return impl.createInputPipe(adv);
    }
    
    /**
     *  {@inheritDoc}
     **/
    public InputPipe createInputPipe(PipeAdvertisement adv, PipeMsgListener listener) throws IOException {
        return impl.createInputPipe(adv, listener );
    }
    
    /**
     *  {@inheritDoc}
     **/
    public OutputPipe createOutputPipe(PipeAdvertisement pipeAdv, long timeout) throws IOException {
        return impl.createOutputPipe(pipeAdv, timeout);
    }
    
    /**
     *  {@inheritDoc}
     **/
    public OutputPipe createOutputPipe(PipeAdvertisement adv, Set peers, long timeout) throws IOException {
        return impl.createOutputPipe(adv, peers, timeout);
    }
    
    /**
     *  {@inheritDoc}
     **/
    public void createOutputPipe(PipeAdvertisement pipeAdv, OutputPipeListener listener) throws IOException {
        impl.createOutputPipe( pipeAdv, listener );
    }
    
    /**
     *  {@inheritDoc}
     **/
    public void createOutputPipe(PipeAdvertisement adv, Set peers, OutputPipeListener listener) throws IOException {
        impl.createOutputPipe( adv, peers, listener);
    }
    
    /**
     *  {@inheritDoc}
     **/
    public OutputPipeListener removeOutputPipeListener(String pipeID, OutputPipeListener listener){
        return( impl.removeOutputPipeListener(pipeID, listener) );
    }
}