content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.chemistry.opencmis.client.bindings.cache;
  
  import java.io.Serializable;
  import java.util.Map;
  
  /**
   * Interface for a level of an hierarchical cache.
   * 
   * @see Cache
   */
  public interface CacheLevel extends Serializable {
  
      /**
       * Initialize the cache level.
       * 
       * @param parameters
       *            level parameters
       */
      void initialize(Map<String, String> parameters);
  
      /**
       * Adds an object to the cache level.
       * 
       * @param value
       *            the object
       * @param key
       *            the key at this level
       */
      void put(Object value, String key);
  
      /**
       * Retrieves an object from the cache level.
       * 
       * @param key
       *            the key at this cache level
       * @return the object or <code>null</code> if the object doesn't exist
       */
      Object get(String key);
  
      /**
       * Removes an object from this cache level.
       * 
       * @param key
       *            the key at this cache level
       */
      void remove(String key);
  }
  