/*
 * Copyright 2002-2019 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.aop;

Filter that restricts matching of a pointcut or introduction to
a given set of target classes.
Can be used as part of a Pointcut or for the entire targeting of an IntroductionAdvisor. 
Concrete implementations of this interface typically should provide proper implementations of Object.equals(Object) and Object.hashCode() in order to allow the filter to be used in caching scenarios — for example, in proxies generated by CGLIB. 
Author:
Rod Johnson
See Also:
Pointcut
MethodMatcher/**
 * Filter that restricts matching of a pointcut or introduction to
 * a given set of target classes.
 *
 * <p>Can be used as part of a {@link Pointcut} or for the entire
 * targeting of an {@link IntroductionAdvisor}.
 *
 * <p>Concrete implementations of this interface typically should provide proper
 * implementations of {@link Object#equals(Object)} and {@link Object#hashCode()}
 * in order to allow the filter to be used in caching scenarios &mdash; for
 * example, in proxies generated by CGLIB.
 *
 * @author Rod Johnson
 * @see Pointcut
 * @see MethodMatcher
 */
@FunctionalInterface
public interface ClassFilter {

	
Should the pointcut apply to the given interface or target class?
Params:
clazz – the candidate target class
Returns:
whether the advice should apply to the given target class/**
	 * Should the pointcut apply to the given interface or target class?
	 * @param clazz the candidate target class
	 * @return whether the advice should apply to the given target class
	 */
	boolean matches(Class<?> clazz);


	
Canonical instance of a ClassFilter that matches all classes.
/**
	 * Canonical instance of a ClassFilter that matches all classes.
	 */
	ClassFilter TRUE = TrueClassFilter.INSTANCE;

}