001/* 002 * Copyright 2002-2013 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.cache.interceptor; 018 019import java.lang.reflect.Method; 020 021/** 022 * Cache key generator. Used for creating a key based on the given method 023 * (used as context) and its parameters. 024 * 025 * @author Costin Leau 026 * @author Chris Beams 027 * @author Phillip Webb 028 * @since 3.1 029 */ 030public interface KeyGenerator { 031 032 /** 033 * Generate a key for the given method and its parameters. 034 * @param target the target instance 035 * @param method the method being called 036 * @param params the method parameters (with any var-args expanded) 037 * @return a generated key 038 */ 039 Object generate(Object target, Method method, Object... params); 040 041}