/FileExtraction/Java_unseen/dlitz_resin/modules/resin/src/com/caucho/server/distcache/CacheEngine.java
/*
 * Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.server.distcache;

import com.caucho.util.HashKey;

/**
 * Manages the distributed cache
 */
public interface CacheEngine
{
  /**
   * Starts the service
   */
  public void start();

  public void initCache(CacheImpl cache);

  public boolean isLocalExpired(CacheConfig config,
                                HashKey key,
                                MnodeEntry mnodeEntry, 
                                long now);
  
  public MnodeEntry get(DistCacheEntry entry, CacheConfig config);
  
  public boolean loadData(HashKey valueKey, int flags);

  public void put(HashKey key, 
                  MnodeUpdate mnodeUpdate,
                  MnodeEntry mnodeValue);

  public void updateTime(HashKey key, MnodeEntry mnodeValue);

  public void remove(HashKey key, 
                     MnodeUpdate mnodeUpdate,
                     MnodeEntry mnodeEntry);

  public HashKey getAndPut(DistCacheEntry entry, 
                           MnodeUpdate mnodeUpdate,
                           Object value, 
                           long leaseTimeout, 
                           int leaseOwner);

  public HashKey compareAndPut(DistCacheEntry entry, 
                               HashKey testValue,
                               MnodeUpdate mnodeUpdate, 
                               Object value,
                               CacheConfig config);
}
