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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 
 */
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);
    }
  }

}