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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2006, 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.common.impl.app.auth;

import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

import org.jdiameter.api.ApplicationId;
import org.jdiameter.api.NetworkReqListener;
import org.jdiameter.api.app.StateChangeListener;
import org.jdiameter.client.api.ISessionFactory;
import org.jdiameter.common.api.app.auth.IAuthSessionData;
import org.jdiameter.common.impl.app.AppSessionImpl;

/**
 * 
 * @author  Bartosz Baranowski 
 * @author  Alexandre Mendonca 
 */
public abstract class AppAuthSessionImpl extends AppSessionImpl implements NetworkReqListener, org.jdiameter.api.app.StateMachine {

  protected Lock sendAndStateLock = new ReentrantLock();
  protected ApplicationId appId;

  protected transient List stateListeners = new CopyOnWriteArrayList();

  // protected SessionFactory sf = null;

  public AppAuthSessionImpl(ISessionFactory sf, IAuthSessionData sessionData) {
    super(sf, sessionData);
  }

  public void addStateChangeNotification(StateChangeListener listener) {
    if (!stateListeners.contains(listener)) {
      stateListeners.add(listener);
    }
  }

  public void removeStateChangeNotification(StateChangeListener listener) {
    stateListeners.remove(listener);
  }

  public void release() {
    //stateListeners.clear();
    super.release();
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = super.hashCode();
    result = prime * result + ((appId == null) ? 0 : appId.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (!super.equals(obj))
      return false;
    if (getClass() != obj.getClass())
      return false;
    AppAuthSessionImpl other = (AppAuthSessionImpl) obj;
    if (appId == null) {
      if (other.appId != null)
        return false;
    }
    else if (!appId.equals(other.appId))
      return false;
    return true;
  }


}