/*
    * Copyright (C) 2003-2011 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.services.jcr.sessions.impl;
  
  import java.util.List;
  
  import org.exoplatform.services.jcr.access.AccessControlEntry;
  import org.exoplatform.services.jcr.ext.common.SessionProvider;
  import org.exoplatform.services.jcr.sessions.ACLSessionProviderService;
  
  /**
   * Created by The eXo Platform SAS
   * Author : Nguyen Anh Vu
   *          anhvurz90@gmail.com
   * Apr 25, 2011  
   */
  public class ACLSessionProviderServiceThreadLocalImpl implements ACLSessionProviderService {
    
    private static ThreadLocal<SessionProvider> aclSessionProviderKeeper = new ThreadLocal<SessionProvider>();
    private static ThreadLocal<SessionProvider> anonymSessionProviderKeeper = new ThreadLocal<SessionProvider>();
  
    @Override
    public SessionProvider getACLSessionProvider(List<AccessControlEntry> accessList) {
      SessionProvider provider = aclSessionProviderKeeper.get();
      if (provider == null) {
        provider = SessionProvider.createProvider(accessList);
        aclSessionProviderKeeper.set(provider);
      }
      return provider;
    }
    
    @Override
    public SessionProvider getAnonymSessionProvider() {
      SessionProvider provider = anonymSessionProviderKeeper.get();
      if (provider == null) {
        provider = SessionProvider.createAnonimProvider();
        anonymSessionProviderKeeper.set(provider);
      }
      return provider;
    }
    
  
    @Override
    public void clearSessionProviders() {
      SessionProvider provider = aclSessionProviderKeeper.get();
      if (provider != null) {
        provider.close();
        aclSessionProviderKeeper.remove();
      }
      provider = anonymSessionProviderKeeper.get();
      if (provider != null) {
        provider.close();
        anonymSessionProviderKeeper.remove();
      }
    }
    
  }