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Consistently register CGLIB hints for lazy resolution proxy classes
Core JDK/CGLIB proxy registration code extracted to ClassHintUtils. Closes gh-29584
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spring-core/src/main/java/org/springframework/aot/hint/support/ClassHintUtils.java
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/* | ||
* Copyright 2002-2022 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. | ||
*/ | ||
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package org.springframework.aot.hint.support; | ||
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import java.lang.reflect.Proxy; | ||
import java.util.function.Consumer; | ||
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import org.springframework.aot.hint.MemberCategory; | ||
import org.springframework.aot.hint.RuntimeHints; | ||
import org.springframework.aot.hint.TypeHint; | ||
import org.springframework.util.ClassUtils; | ||
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/** | ||
* Utilities for core hint inference on Spring-managed classes, | ||
* specifically for proxy types such as interface-based JDK proxies | ||
* and CGLIB-generated subclasses which need proxy/reflection hints. | ||
* | ||
* <p>Note that this class does not take specifics of Spring AOP or | ||
* any other framework arrangement into account. It just operates | ||
* on the JDK and CGLIB proxy facilities and their core conventions. | ||
* | ||
* @author Juergen Hoeller | ||
* @since 6.0.3 | ||
* @see org.springframework.aot.hint.ProxyHints | ||
* @see org.springframework.aot.hint.ReflectionHints | ||
*/ | ||
public abstract class ClassHintUtils { | ||
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private static final Consumer<TypeHint.Builder> asClassBasedProxy = hint -> | ||
hint.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS, | ||
MemberCategory.INVOKE_DECLARED_METHODS, | ||
MemberCategory.DECLARED_FIELDS); | ||
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private static final Consumer<TypeHint.Builder> asProxiedUserClass = hint -> | ||
hint.withMembers(MemberCategory.INVOKE_PUBLIC_METHODS); | ||
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/** | ||
* Register a proxy hint for a JDK proxy or corresponding reflection hints | ||
* for a CGLIB-generated subclass, if necessary. | ||
* @param candidateClass the class to introspect | ||
* @param runtimeHints the RuntimeHints instance to register the hints on | ||
* @see Proxy#isProxyClass(Class) | ||
* @see ClassUtils#getUserClass(Class) | ||
*/ | ||
public static void registerProxyIfNecessary(Class<?> candidateClass, RuntimeHints runtimeHints) { | ||
if (Proxy.isProxyClass(candidateClass)) { | ||
// A JDK proxy class needs an explicit hint | ||
runtimeHints.proxies().registerJdkProxy(candidateClass.getInterfaces()); | ||
} | ||
else { | ||
// Potentially a CGLIB-generated subclass with reflection hints | ||
Class<?> userClass = ClassUtils.getUserClass(candidateClass); | ||
if (userClass != candidateClass) { | ||
runtimeHints.reflection() | ||
.registerType(candidateClass, asClassBasedProxy) | ||
.registerType(userClass, asProxiedUserClass); | ||
} | ||
} | ||
} | ||
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} |