001/* 002 * Copyright 2002-2012 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.aop.target.dynamic; 018 019/** 020 * Interface to be implemented by dynamic target objects, 021 * which support reloading and optionally polling for updates. 022 * 023 * @author Rod Johnson 024 * @author Rob Harrop 025 * @since 2.0 026 */ 027public interface Refreshable { 028 029 /** 030 * Refresh the underlying target object. 031 */ 032 void refresh(); 033 034 /** 035 * Return the number of actual refreshes since startup. 036 */ 037 long getRefreshCount(); 038 039 /** 040 * Return the last time an actual refresh happened (as timestamp). 041 */ 042 long getLastRefreshTime(); 043 044}