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/*
 * TeleStax, Open Source Cloud Communications
 * Copyright 2011-2016, TeleStax Inc. and individual contributors
 * by the @authors tag.
 *
 * This program is free software: you can redistribute it and/or modify
 * under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation; either version 3 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see 
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 *   JBoss, Home of Professional Open Source
 *   Copyright 2007-2011, Red Hat, Inc. and individual contributors
 *   by the @authors tag. See the copyright.txt in the distribution for a
 *   full listing of individual contributors.
 *
 *   This is free software; you can redistribute it and/or modify it
 *   under the terms of the GNU Lesser General Public License as
 *   published by the Free Software Foundation; either version 2.1 of
 *   the License, or (at your option) any later version.
 *
 *   This software is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 *   Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this software; if not, write to the Free
 *   Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 *   02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jdiameter.server.impl.app.cxdx;

import org.jdiameter.api.InternalException;
import org.jdiameter.api.app.AppEvent;
import org.jdiameter.api.app.StateEvent;

/**
 * Start time:19:52:21 2009-08-17

 * Project: diameter-parent

 *
 * @author  Bartosz Baranowski 
 * @author  Alexandre Mendonca 
 */
@SuppressWarnings("all") //3rd party lib
public class Event implements StateEvent {

    enum Type {
        SEND_MESSAGE,
        TIMEOUT_EXPIRES,
        RECEIVE_UAR,
        RECEIVE_SAR,
        RECEIVE_LIR,
        RECEIVE_MAR,
        RECEIVE_PPA,
        RECEIVE_RTA;
    }

    AppEvent request;
    AppEvent answer;
    Type type;

    Event(Type type, AppEvent request, AppEvent answer) {
        this.type = type;
        this.answer = answer;
        this.request = request;
    }

    @Override
    public  E encodeType(Class eClass) {
        return eClass == Type.class ? (E) type : null;
    }

    @Override
    public Enum getType() {
        return type;
    }

    public AppEvent getRequest() {
        return request;
    }

    public AppEvent getAnswer() {
        return answer;
    }

    @Override
    public int compareTo(Object o) {
        return 0;
    }

    @Override
    public Object getData() {
        return request != null ? request : answer;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.jdiameter.api.app.StateEvent#setData(java.lang.Object)
     */
    @Override
    public void setData(Object data) {
        try {
            if (((AppEvent) data).getMessage().isRequest()) {
                request = (AppEvent) data;
            } else {
                answer = (AppEvent) data;
            }
        } catch (InternalException e) {
            throw new IllegalArgumentException(e);
        }
    }

}