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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2007-2010 Oracle and/or its affiliates. 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_1_1.html
 * or packager/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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
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 */

package com.sun.grizzly.cometd.bayeux;

/**
 * Bayeux Deliver Response implementation.
 * This is used in server side.
 *
 * @author Shing Wai Chan
 */
public class DeliverResponse extends VerbBase {
    public DeliverResponse() {
        type = Verb.Type.DELIVER;
    }

    public DeliverResponse(PublishRequest req) {
        this();
        channel = req.getChannel();
        data = req.getData();
        clientId = req.getClientId();
        id = req.getId();
        ext = req.getExt();
        advice = req.getAdvice();
        first = req.isFirst();
        follow = req.isFollow();
        last = req.isLast();
    }

    @Override
    public boolean isValid() {
        return (channel != null && data != null);
    }

    public String toJSON() {
        StringBuilder sb = new StringBuilder(
                getJSONPrefix() + "{"
                + "\"channel\":\"" + channel + "\""
                );
        if (data != null) {
            sb.append("," + data.toJSON());
        }
        if (id != null) {
            sb.append(",\"id\":\"" + id + "\"");
        }
        if (clientId != null) {
            sb.append(",\"clientId\":\"" + clientId + "\"");
        }

        if (ext != null) {
            sb.append("," + ext.toJSON());
        }
        if (advice != null) {
            sb.append("," + advice.toJSON());
        }
        sb.append("}" + getJSONPostfix());
        return sb.toString();
    }    
}