/*
* 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 hivemall.utils.collections;
import java.util.LinkedHashMap;
import java.util.Map;
public class LRUMap<K, V> extends LinkedHashMap<K, V> {
private static final long serialVersionUID = -7708264099645977733L;
private final int cacheSize;
public LRUMap(int cacheSize) {
this(cacheSize, 0.75f, cacheSize);
}
public LRUMap(int capacity, float loadFactor, int cacheSize) {
super(capacity, loadFactor, true);
this.cacheSize = cacheSize;
}
protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
return size() > cacheSize;
}
}