001/*
002 * Copyright 2002-2007 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;
018
019/**
020 * Filter that restricts matching of a pointcut or introduction to
021 * a given set of target classes.
022 *
023 * <p>Can be used as part of a {@link Pointcut} or for the entire
024 * targeting of an {@link IntroductionAdvisor}.
025 *
026 * @author Rod Johnson
027 * @see Pointcut
028 * @see MethodMatcher
029 */
030public interface ClassFilter {
031
032        /**
033         * Should the pointcut apply to the given interface or target class?
034         * @param clazz the candidate target class
035         * @return whether the advice should apply to the given target class
036         */
037        boolean matches(Class<?> clazz);
038
039
040        /**
041         * Canonical instance of a ClassFilter that matches all classes.
042         */
043        ClassFilter TRUE = TrueClassFilter.INSTANCE;
044
045}