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}