/*
 * Copyright 2002-2018 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;

import java.io.Serializable;
import java.lang.reflect.Method;

Canonical MethodMatcher instance that matches all methods.
Author:Rod Johnson
/** * Canonical MethodMatcher instance that matches all methods. * * @author Rod Johnson */
@SuppressWarnings("serial") final class TrueMethodMatcher implements MethodMatcher, Serializable { public static final TrueMethodMatcher INSTANCE = new TrueMethodMatcher();
Enforce Singleton pattern.
/** * Enforce Singleton pattern. */
private TrueMethodMatcher() { } @Override public boolean isRuntime() { return false; } @Override public boolean matches(Method method, Class<?> targetClass) { return true; } @Override public boolean matches(Method method, Class<?> targetClass, Object... args) { // Should never be invoked as isRuntime returns false. throw new UnsupportedOperationException(); } @Override public String toString() { return "MethodMatcher.TRUE"; }
Required to support serialization. Replaces with canonical instance on deserialization, protecting Singleton pattern. Alternative to overriding equals().
/** * Required to support serialization. Replaces with canonical * instance on deserialization, protecting Singleton pattern. * Alternative to overriding {@code equals()}. */
private Object readResolve() { return INSTANCE; } }