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.impl;
  
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  /**
   * LRU cache.
   */
  public class LruCacheLevelImpl extends AbstractMapCacheLevel {
  
      private static final long serialVersionUID = 1L;
  
      public static final String MAX_ENTRIES = "maxEntries";
  
      @Override
      public void initialize(Map<String, String> parameters) {
          final int maxEntries = getIntParameter(parameters, MAX_ENTRIES, 100);
  
          setMap(new LinkedHashMap<String, Object>(maxEntries + 1, 0.70f, true) {
              private static final long serialVersionUID = 1L;
  
              @Override
              public boolean removeEldestEntry(Map.Entry<String, Object> eldest) {
                  return size() > maxEntries;
              }
          });
      }
  
      @Override
      public synchronized Object get(String key) {
          return super.get(key);
      }
  }
  