spring TrueMethodMatcher 源码
spring TrueMethodMatcher 代码
文件路径：/spring-aop/src/main/java/org/springframework/aop/TrueMethodMatcher.java
/*
* 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
*/
@SuppressWarnings("serial")
final class TrueMethodMatcher implements MethodMatcher, Serializable {
public static final TrueMethodMatcher INSTANCE = new TrueMethodMatcher();
/**
* 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 {@code equals()}.
*/
private Object readResolve() {
return INSTANCE;
}
}
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