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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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| } |