pipeserviceinterface.java

JXTA&#8482 is a set of open, generalized peer-to-peer (P2P) protocols that allow any networked devi

/*
 * Copyright (c) 2001-2007 Sun Microsystems, Inc.  All rights reserved.
 *  
 *  The Sun Project JXTA(TM) Software License
 *  
 *  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.
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 *     and/or other materials provided with the distribution.
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 *  3. The end-user documentation included with the redistribution, if any, must 
 *     include the following acknowledgment: "This product includes software 
 *     developed by Sun Microsystems, Inc. for JXTA(TM) technology." 
 *     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 
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 *     Project JXTA at http://www.jxta.org.
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 *  JXTA is a registered trademark of Sun Microsystems, Inc. in the United 
 *  States and other countries.
 *  
 *  Please see the license information page at :
 *  <http://www.jxta.org/project/www/license.html> for instructions on use of 
 *  the license in source files.
 *  
 *  ====================================================================
 *  
 *  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 net.jxta.document.Advertisement;
import net.jxta.id.ID;
import net.jxta.peergroup.PeerGroup;
import net.jxta.pipe.*;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.peer.PeerID;

import java.io.IOException;
import java.net.URI;
import java.util.Set;
import net.jxta.protocol.ModuleImplAdvertisement;

/**
 * This class implements the Pipe interface.
 */
class PipeServiceInterface implements PipeService {

    PipeServiceImpl impl;

    /**
     * The only authorized constructor.
     * @param theRealThing the PipeService
     */
    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 PipeService getInterface() {
        return this;
    }

    /**
     * {@inheritDoc}
     */
    public ModuleImplAdvertisement 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<? extends ID> 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<? extends ID> peers, OutputPipeListener listener) throws IOException {
        impl.createOutputPipe(adv, peers, listener);
    }

    /**
     * {@inheritDoc}
     */
    public OutputPipeListener removeOutputPipeListener(String pipeID, OutputPipeListener listener) {
        return removeOutputPipeListener(ID.create(URI.create(pipeID)), listener);
    }

    /**
     * {@inheritDoc}
     */
    public OutputPipeListener removeOutputPipeListener(ID pipeID, OutputPipeListener listener) {
        return impl.removeOutputPipeListener(pipeID, listener);
    }
}