001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.commons.collection.concurrent; 020 021import lucee.commons.collection.concurrent.ConcurrentLinkedHashMapPro.Entry; 022 023 024public class LRUPolicy implements EvictionPolicy { 025 026 @Override 027 public boolean accessOrder() { 028 return true; 029 } 030 031 @Override 032 public boolean insertionOrder() { 033 return false; 034 } 035 036 @Override 037 public Entry<?, ?> evictElement(Entry<?, ?> head) { 038 return head.getAfter(); 039 } 040 041 @Override 042 public Entry<?, ?> recordInsertion(Entry<?, ?> head, Entry<?, ?> insertedEntry) { 043 return null; 044 } 045 046 @Override 047 public Entry<?, ?> recordAccess(Entry<?, ?> head, Entry<?, ?> accessedEntry) { 048 return head; 049 } 050 051}