spring CacheOperationSourcePointcut 源码
spring CacheOperationSourcePointcut 代码
文件路径：/spring-context/src/main/java/org/springframework/cache/interceptor/CacheOperationSourcePointcut.java
/*
* Copyright 2002-2021 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.cache.interceptor;
import java.io.Serializable;
import java.lang.reflect.Method;
import org.springframework.aop.ClassFilter;
import org.springframework.aop.support.StaticMethodMatcherPointcut;
import org.springframework.cache.CacheManager;
import org.springframework.lang.Nullable;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
/**
* A Pointcut that matches if the underlying {@link CacheOperationSource}
* has an attribute for a given method.
*
* @author Costin Leau
* @author Juergen Hoeller
* @since 3.1
*/
@SuppressWarnings("serial")
abstract class CacheOperationSourcePointcut extends StaticMethodMatcherPointcut implements Serializable {
protected CacheOperationSourcePointcut() {
setClassFilter(new CacheOperationSourceClassFilter());
}
@Override
public boolean matches(Method method, Class<?> targetClass) {
CacheOperationSource cas = getCacheOperationSource();
return (cas != null && !CollectionUtils.isEmpty(cas.getCacheOperations(method, targetClass)));
}
@Override
public boolean equals(@Nullable Object other) {
if (this == other) {
return true;
}
if (!(other instanceof CacheOperationSourcePointcut otherPc)) {
return false;
}
return ObjectUtils.nullSafeEquals(getCacheOperationSource(), otherPc.getCacheOperationSource());
}
@Override
public int hashCode() {
return CacheOperationSourcePointcut.class.hashCode();
}
@Override
public String toString() {
return getClass().getName() + ": " + getCacheOperationSource();
}
/**
* Obtain the underlying {@link CacheOperationSource} (may be {@code null}).
* To be implemented by subclasses.
*/
@Nullable
protected abstract CacheOperationSource getCacheOperationSource();
/**
* {@link ClassFilter} that delegates to {@link CacheOperationSource#isCandidateClass}
* for filtering classes whose methods are not worth searching to begin with.
*/
private class CacheOperationSourceClassFilter implements ClassFilter {
@Override
public boolean matches(Class<?> clazz) {
if (CacheManager.class.isAssignableFrom(clazz)) {
return false;
}
CacheOperationSource cas = getCacheOperationSource();
return (cas == null || cas.isCandidateClass(clazz));
}
}
}
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