001// Copyright 2004, 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.services; 016 017 018/** 019 * An pool for objects. Objects may be stored in a Pool for later reuse. 020 * 021 * @author Howard Lewis Ship 022 * @since 4.0 023 */ 024public interface ObjectPool 025{ 026 /** 027 * Returns an object from the pool, previously stored with the given key. May 028 * return null if no such object exists. 029 */ 030 Object get(Object key); 031 032 /** 033 * Stores an object into the pool for later retrieval with the provided key. 034 */ 035 036 void store(Object key, Object value); 037}