endpointroutermessage.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

/************************************************************************
 *
 * $Id: EndpointRouterMessage.java,v 1.15 2001/10/02 21:22:06 lomax 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,
 * 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.
 *********************************************************************************/


package net.jxta.impl.endpoint;

import java.net.*;
import java.io.*;
import java.util.*;
import net.jxta.document.*;


/**
 *
 */
public class EndpointRouterMessage {

    private StructuredDocument doc = null;
    public static final String SrcTag = "jxta:Src";
    public static final String DestTag = "jxta:Dest";
    public static final String LastHopTag = "jxta:Last";
    public static final String NbOfHopsTag = "jxta:NBOH";

    private String srcAddress = null;       // PeerID-based EndpointAddress
    private String destAddress = null;      // PeerID-based EndpointAddress
    private String lastHop = null;          // Plain PeerID
    private String nbOfHops = null;        // Nb of hops for the reverse route.
                                            // 0 = no reverse route
    private Vector forwardGateways = null;
    private Vector reverseGateways = null;
    
    public static final String Name = "JxtaEndpointRouter";
    
    public EndpointRouterMessage () {
    }

    public EndpointRouterMessage (InputStream ip) {
	doc = createDoc (ip);
	parse();
    }

    public InputStream getInputStream () {

	doc = createDoc();
	if (doc == null) {
	    System.err.println("EndpointRouterMessage cannot create doc");
	} 

	Element e = null;
	if (srcAddress != null) {
	    e = doc.createElement (SrcTag, srcAddress);
	    doc.appendChild (e);
	}

	if (destAddress != null) {
	    e = doc.createElement (DestTag, destAddress);
	    doc.appendChild (e);
	}

	if (lastHop != null) {
	    e = doc.createElement (LastHopTag, lastHop);
	    doc.appendChild (e);
	}

	if (nbOfHops != null) {
	    e = doc.createElement (NbOfHopsTag, nbOfHops);
	    doc.appendChild (e);
	}


	String gateway = null;
	if ((forwardGateways != null) && (forwardGateways.size() > 0)) {
	    for (int i = 0; i < forwardGateways.size(); ++i) {
		try {
		    gateway = (String) forwardGateways.elementAt(i);
		    e = doc.createElement(EndpointRouter.GatewayForwardTag, gateway);
		    doc.appendChild(e);
		} catch (Exception e1) {
		    continue;
		}
	    }
	}


	gateway = null;
	if ((reverseGateways != null) && (reverseGateways.size() > 0)) {
	    for (int i = 0; i < reverseGateways.size(); ++i) {
		try {
		    gateway = (String) reverseGateways.elementAt(i);
		    e = doc.createElement(EndpointRouter.GatewayReverseTag, gateway);
		    doc.appendChild(e);
		} catch (Exception e1) {
		    continue;
		}
	    }
	}


	try {
	    return doc.getStream();
	} catch (Exception ee) {
	    return null;
	}
    }

    private void parse () {

	Enumeration enum = null;
	TextElement e = null;
	
	enum = doc.getChildren();
	if ((enum == null) || (!enum.hasMoreElements())) {
	    return;
	}

	while (enum.hasMoreElements()) {
	    try {
		e = (TextElement) enum.nextElement();

		if (e.getName().equals (SrcTag)) {
		    srcAddress = e.getTextValue();
		    continue;
		}

		if (e.getName().equals (DestTag)) {
		    destAddress = e.getTextValue();
		    continue;
		}

		if (e.getName().equals (LastHopTag)) {
		    lastHop = e.getTextValue();
		    continue;
		}

		if (e.getName().equals (NbOfHopsTag)) {
		    nbOfHops = e.getTextValue();
		    continue;
		}

		if (e.getName().equals(EndpointRouter.GatewayForwardTag)) {
		    if (forwardGateways == null) {
			forwardGateways = new Vector();
		    }
		    forwardGateways.addElement((String) e.getValue());
		    continue;
		}

		if (e.getName().equals(EndpointRouter.GatewayReverseTag)) {
		    if (reverseGateways == null) {
			reverseGateways = new Vector();
		    }
		    reverseGateways.addElement((String) e.getValue());
		    continue;
		}

	    } catch (Exception ee) {
		continue;
	    }
	}
    }
    
    public void setSrcAddress (String a) {
	srcAddress = a;
    }

    public String getSrcAddress () {
	return srcAddress;
    }

    public void setNbOfHops (String n) {
	nbOfHops = n;
    }

    public String getNbOfHops () {
	return nbOfHops;
    }

    public void setDestAddress (String a) {
	destAddress = a;
    }

    public String getDestAddress () {
	return destAddress;
    }

    public void setLastHop (String p) {
	lastHop = p;
    }

    public String getLastHop () {
	return lastHop;
    }

    public void setForwardGateways (Vector v) {
	if (v == null) {
	    forwardGateways = null;
	} else {
	    forwardGateways = (Vector) v.clone();
	}
    }

    public Vector getForwardGateways () {
	return forwardGateways;
    }


    public void setReverseGateways (Vector v) {
	if (v == null) {
	    reverseGateways = null;
	} else {
	    reverseGateways = (Vector) v.clone();
	}
    }

    public Vector getReverseGateways () {
	return reverseGateways;
    }

    private StructuredDocument createDoc() {
        try {
            return StructuredDocumentFactory.newStructuredDocument (
            new MimeMediaType ("text/xml"), "jxta:EndpointRouterMessage");
        }
        catch ( Exception everything ) {
            return null;
        }
    }

    private StructuredDocument createDoc(InputStream ip) {
        try {
            return StructuredDocumentFactory.newStructuredDocument (
            new MimeMediaType ("text/xml"), ip);
        }
        catch ( Exception everything ) {
            return null;
        }
   }

}