endpointadv.java

jxme的一些相关程序,主要是手机上程序开发以及手机和计算机通信的一些程序资料,程序编译需要Ant支持

/*
 * 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,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * 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.
 *
 * $Id: EndpointAdv.java,v 1.18 2001/11/06 05:27:32 bondolo Exp $
 */


package net.jxta.impl.protocol;

import java.io.*;
import java.util.*;
import net.jxta.document.*;
import net.jxta.protocol.*;
import net.jxta.id.ID;

/**
 * This class implements the basic endpoint advertisement
 *
 */

public class EndpointAdv extends EndpointAdvertisement {
    
    public static class Instantiator implements AdvertisementFactory.Instantiator {
        
        /**
         * Returns the identifying type of this Advertisement.
         *
         * @return String the type of advertisement
         *
         * @since JXTA 1.0
         **/
        public String getAdvertisementType( ) {
            return EndpointAdv.getAdvertisementType();
        }
        
        /**
         * Constructs an instance of <CODE>Advertisement</CODE> matching the type
         * specified by the <CODE>advertisementType</CODE> parameter.
         *
         * @param advertisementType Specifies the mime media type to be associated with the
         * <CODE>StructuredDocument</CODE> to be created.
         * @return The instance of <CODE>Advertisement</CODE> or null if it
         * could not be created.
         *
         * @exception InvocationTargetException error invoking target constructor
         *
         * @since JXTA 1.0
         **/
        public Advertisement newInstance( ) {
            return new EndpointAdv();
        }
        
        /**
         * Constructs an instance of <CODE>Advertisement</CODE> matching the type
         * specified by the <CODE>advertisementType</CODE> parameter.
         *
         * @param root Specifies a portion of a StructuredDocument which will be
         * converted into an Advertisement.
         * @return The instance of <CODE>Advertisement</CODE> or null if it
         * could not be created.
         *
         * @exception InvocationTargetException error invoking target constructor
         *
         * @since JXTA 1.0
         **/
        public Advertisement newInstance( net.jxta.document.Element root ) {
            return new EndpointAdv( root );
        }
    };
    
    public EndpointAdv() {
    }
    
    /**
     *  @deprecated Please use the Advertisement factory and accessors
     **/
    public EndpointAdv(String name, String keywords, String address,
    TransportAdvertisement transport) {
        setName(name);
        setKeywords(keywords);
        setEndpointAddress(address);
        setTransportAdvertisement(transport);
    }
    
    public EndpointAdv( Element root ) {
        initialize( root );
    }
    
    /**
     * Evolutionary patch
     */

    public ID getID() {
        return ID.nullID;
    }

    void initialize(Element root) {
        
        if( !TextElement.class.isInstance( root ) )
            throw new IllegalArgumentException( getClass().getName() + " only supports TextElement" );
        
        TextElement doc = (TextElement) root;
        
        if( !getAdvertisementType().equals( doc.getName() ) )
            throw new IllegalArgumentException( "Could not construct : "
            + getClass().getName()
            + "from doc containing a "
            + doc.getName() );
        
        Enumeration elements = doc.getChildren();
        while (elements.hasMoreElements()) {
            TextElement elem = (TextElement) elements.nextElement();
            if ( elem.getName().equals("Name")) {
                setName( elem.getTextValue() );
                continue;
            }
            if( elem.getName().equals("Keywords")) {
                setKeywords( elem.getTextValue() );
                continue;
            }
            if( elem.getName().equals("Address")) {
                setEndpointAddress( elem.getTextValue() );
                continue;
            }
            
            // Transport
            if (elem.getName().equals( "Transport" )) {
                for( Enumeration eachXpt = elem.getChildren(); 
                    eachXpt.hasMoreElements(); ) {
                    TextElement aXpt = (TextElement) eachXpt.nextElement();
                    
                    TransportAdvertisement xptAdv = (TransportAdvertisement) 
                        AdvertisementFactory.newAdvertisement(aXpt);
                    setTransportAdvertisement (xptAdv);
                }
                continue;
            }
            // Off flag (included only to mean off)
            if( elem.getName().equals("isOff")) {
                setEnabled(false);
            }
        }
    }
    
    public Document getDocument( MimeMediaType encodeAs ) {
        StructuredTextDocument adv = adv = (StructuredTextDocument)
            StructuredDocumentFactory.newStructuredDocument(
            encodeAs, getAdvertisementType() );
        
        Element e1 = adv.createElement("Name", getName());
        adv.appendChild(e1);
        
        Element e2 = adv.createElement("Keywords", getKeywords());
        adv.appendChild(e2);
        
        Element e = adv.createElement("Address", getEndpointAddress());
        adv.appendChild(e);
        
        if (! isEnabled()) {
            Element e3 = adv.createElement("isOff");
            adv.appendChild(e3);
        }

        TransportAdvertisement transport = getTransportAdvertisement();
        if (transport != null) {
            Element e4 = adv.createElement("Transport");
            adv.appendChild(e4);
        
            StructuredTextDocument xptDoc = (StructuredTextDocument)
                transport.getDocument( encodeAs );
        
            StructuredDocumentUtils.copyElements( adv, e4, xptDoc );
        }

        return adv;
    }
}