001/* 002 * Copyright 2002-2019 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.support; 018 019import java.io.Serializable; 020 021import org.springframework.aop.ClassFilter; 022import org.springframework.util.Assert; 023 024/** 025 * Simple ClassFilter implementation that passes classes (and optionally subclasses). 026 * 027 * @author Rod Johnson 028 * @author Sam Brannen 029 */ 030@SuppressWarnings("serial") 031public class RootClassFilter implements ClassFilter, Serializable { 032 033 private final Class<?> clazz; 034 035 036 public RootClassFilter(Class<?> clazz) { 037 Assert.notNull(clazz, "Class must not be null"); 038 this.clazz = clazz; 039 } 040 041 042 @Override 043 public boolean matches(Class<?> candidate) { 044 return this.clazz.isAssignableFrom(candidate); 045 } 046 047 @Override 048 public boolean equals(Object other) { 049 return (this == other || (other instanceof RootClassFilter && 050 this.clazz.equals(((RootClassFilter) other).clazz))); 051 } 052 053 @Override 054 public int hashCode() { 055 return this.clazz.hashCode(); 056 } 057 058 @Override 059 public String toString() { 060 return getClass().getName() + ": " + this.clazz.getName(); 061 } 062 063}