/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
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 * Header, with the fields enclosed by brackets [] replaced by your own
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 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package com.sun.grizzly.cometd.bayeux;

/**
 * Bayeux Unsubscribe implementation. 
 * See http://svn.xantus.org/shortbus/trunk/bayeux/protocol.txt for the technical
 * details.
 *
 * // unsubscription for same:
 * 
 * 	//-----------------
 * 	// CLIENT -> SERVER
 * 	//-----------------
 * 
 * 	[
 * 		{
 * 			"channel":		"/meta/unsubscribe",
 * 			"subscription":	"/some/other/channel",
 * 			// optional
 * 			"authToken":	"SOME_NONCE_PREVIOUSLY_PROVIDED_BY_SERVER"
 * 		}
 * 		// , ...
 * 	]
 * 
 * 	// and the server response:
 * 
 * 	//-----------------
 * 	// SERVER -> CLIENT
 * 	//-----------------
 * 
 * 	[
 * 		{
 * 			"channel":		"/meta/unsubscribe",
 * 			"subscription":	"/some/other/channel",
 * 			"successful":	true,
 * 			"clientId":		"SOME_UNIQUE_CLIENT_ID",
 * 			"error":		"",
 * 			// optional
 * 			"authToken":	"SOME_NONCE"
 * 		}
 * 		// , ...
 * 	]
 * 	
 * @author Jeanfrancois Arcand
 */
public class Unsubscribe extends Subscribe{
    
    public Unsubscribe() {
        type = Verb.UNSUBSCRIBE;
    }

    public String toJSON() {        
        return "[{"              
                + "\"error\":\"" + error + "\","
                + "\"subscription\":\"" + subscription + "\"," 
                + "\"successful\":" + successful + ","                
                + "\"channel\":\"" + channel + "\""
                + "}]\n";
    }  
}