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}