messageutilities.java

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

/*
 * Copyright (c) 2001 Sun Microsystems, Inc.  All right 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: MessageUtilities.java,v 1.3 2004/09/23 18:58:11 bondolo Exp $
 */

package net.jxta.util;

import net.jxta.endpoint.*;
import net.jxta.document.*;
import net.jxta.exception.*;
import net.jxta.util.*;

import java.util.*;
import java.io.*;

/**
 *
 *  @deprecated These utilities are unsupported and known to have problems. They
 *  are not reccommended for use and will be removed in a future JXTA release.
 **/
public final class MessageUtilities {
    
    private MessageUtilities() {}
    
	// Fix-Me: I didn't implement byte, short or float
	// Fix-Me: I didn't implement arrays, ie addInt(Message message, String tagName, int values[]), etc
	// Fix-Me: I didn't implement add DocumentSerializable yet

	public static void addInt(Message message, String tagName, int value) {
		StringMessageElement stringMessageElement = new StringMessageElement(tagName, Integer.toString(value), null);
		message.addMessageElement(stringMessageElement);
	}
	
	public static int getInt(Message message, String tagName, int defaultValue) {
		StringMessageElement stringMessageElement = (StringMessageElement) message.getMessageElement(tagName);
		
		if (stringMessageElement != null) {
			return Integer.parseInt(stringMessageElement.toString());
		} else
			return defaultValue;
	}	
		
	public static void addLong(Message message, String tagName, long value) {
		StringMessageElement stringMessageElement = new StringMessageElement(tagName, Long.toString(value), null);
		message.addMessageElement(stringMessageElement);
	}

	public static long getLong(Message message, String tagName, long defaultValue) {
		StringMessageElement stringMessageElement = (StringMessageElement) message.getMessageElement(tagName);
		
		if (stringMessageElement != null) {
			return Long.parseLong(stringMessageElement.toString());
		} else
			return defaultValue;
	}

	public static void addDouble(Message message, String tagName, double value) {
		StringMessageElement stringMessageElement = new StringMessageElement(tagName, Double.toString(value), null);
		message.addMessageElement(stringMessageElement);
	}

	public static double getDouble(Message message, String tagName, double defaultValue) {
		StringMessageElement stringMessageElement = (StringMessageElement) message.getMessageElement(tagName);
		
		if (stringMessageElement != null) {
			return Double.parseDouble(stringMessageElement.toString());
		} else
			return defaultValue;
	}

	public static void addBoolean(Message message, String tagName, boolean value) {
		StringMessageElement stringMessageElement = new StringMessageElement(tagName, value ? "true" : "false", null);
		message.addMessageElement(stringMessageElement);
	}

	public static boolean getBoolean(Message message, String tagName, boolean defaultValue) {
		StringMessageElement stringMessageElement = (StringMessageElement) message.getMessageElement(tagName);
		
		if (stringMessageElement != null)
			return "true".equals(stringMessageElement.toString());
		else
			return defaultValue;
	}	

	public static void addString(Message message, String tagName, String value) {
		StringMessageElement stringMessageElement = new StringMessageElement(tagName, value, null);
		message.addMessageElement(stringMessageElement);
	}

	public static String getString(Message message, String tagName, String defaultValue) {
		MessageElement stringMessageElement = (MessageElement) message.getMessageElement(tagName);
		
		if (stringMessageElement != null)
			return stringMessageElement.toString();
		else
			return defaultValue;
	}

}