Add support for @Transactional in native images

This commit introduces a TransactionBeanRegistrationAotProcessor
in charge of creating the required proxy and reflection hints
when @Transactional is detected on beans.

It also refines DefaultAopProxyFactory to throw an exception
when a subclass-based proxy is created in native images
since that's unsupported for now (see gh-28115 related issue).

Closes gh-28717

spring-tx/src/test/java/org/springframework/transaction/annotation/TransactionBeanRegistrationAotProcessorTests.java

@@ -0,0 +1,177 @@
+/*
+ * 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.
+ */
+
+package org.springframework.transaction.annotation;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aop.SpringProxy;
+import org.springframework.aop.framework.Advised;
+import org.springframework.aot.generate.GenerationContext;
+import org.springframework.aot.hint.MemberCategory;
+import org.springframework.aot.hint.RuntimeHintsPredicates;
+import org.springframework.beans.factory.aot.BeanRegistrationAotContribution;
+import org.springframework.beans.factory.aot.BeanRegistrationCode;
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+import org.springframework.beans.factory.support.RegisteredBean;
+import org.springframework.beans.factory.support.RootBeanDefinition;
+import org.springframework.core.DecoratingProxy;
+import org.springframework.core.testfixture.aot.generate.TestGenerationContext;
+import org.springframework.lang.Nullable;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link TransactionBeanRegistrationAotProcessor}.
+ *
+ * @author Sebastien Deleuze
+ */
+public class TransactionBeanRegistrationAotProcessorTests {
+
+	private final TransactionBeanRegistrationAotProcessor processor = new TransactionBeanRegistrationAotProcessor();
+
+	private final GenerationContext generationContext = new TestGenerationContext();
+
+	@Test
+	void shouldSkipNonAnnotatedType() {
+		process(NonAnnotatedBean.class);
+		assertThat(this.generationContext.getRuntimeHints().reflection().typeHints()).isEmpty();
+		assertThat(this.generationContext.getRuntimeHints().proxies().jdkProxies()).isEmpty();
+	}
+
+	@Test
+	void shouldSkipAnnotatedTypeWithNoInterface() {
+		process(NoInterfaceBean.class);
+		assertThat(this.generationContext.getRuntimeHints().reflection().typeHints()).isEmpty();
+		assertThat(this.generationContext.getRuntimeHints().proxies().jdkProxies()).isEmpty();
+	}
+
+	@Test
+	void shouldProcessTransactionalOnClass() {
+		process(TransactionalOnTypeBean.class);
+		assertThat(RuntimeHintsPredicates.reflection().onType(NonAnnotatedTransactionalInterface.class)
+				.withMemberCategory(MemberCategory.INVOKE_DECLARED_METHODS)).accepts(this.generationContext.getRuntimeHints());
+		assertThat(RuntimeHintsPredicates.proxies().forInterfaces(NonAnnotatedTransactionalInterface.class, SpringProxy.class, Advised.class, DecoratingProxy.class)).accepts(this.generationContext.getRuntimeHints());
+	}
+
+	@Test
+	void shouldProcessJakartaTransactionalOnClass() {
+		process(JakartaTransactionalOnTypeBean.class);
+		assertThat(RuntimeHintsPredicates.reflection().onType(NonAnnotatedTransactionalInterface.class)
+				.withMemberCategory(MemberCategory.INVOKE_DECLARED_METHODS)).accepts(this.generationContext.getRuntimeHints());
+		assertThat(RuntimeHintsPredicates.proxies().forInterfaces(NonAnnotatedTransactionalInterface.class, SpringProxy.class, Advised.class, DecoratingProxy.class)).accepts(this.generationContext.getRuntimeHints());
+	}
+
+	@Test
+	void shouldProcessTransactionalOnInterface() {
+		process(TransactionalOnTypeInterface.class);
+		assertThat(RuntimeHintsPredicates.reflection().onType(TransactionalOnTypeInterface.class)
+				.withMemberCategory(MemberCategory.INVOKE_DECLARED_METHODS)).accepts(this.generationContext.getRuntimeHints());
+		assertThat(RuntimeHintsPredicates.proxies().forInterfaces(TransactionalOnTypeInterface.class, SpringProxy.class, Advised.class, DecoratingProxy.class)).accepts(this.generationContext.getRuntimeHints());
+	}
+
+	@Test
+	void shouldProcessTransactionalOnClassMethod() {
+		process(TransactionalOnClassMethodBean.class);
+		assertThat(RuntimeHintsPredicates.reflection().onType(NonAnnotatedTransactionalInterface.class)
+				.withMemberCategory(MemberCategory.INVOKE_DECLARED_METHODS)).accepts(this.generationContext.getRuntimeHints());
+		assertThat(RuntimeHintsPredicates.proxies().forInterfaces(NonAnnotatedTransactionalInterface.class, SpringProxy.class, Advised.class, DecoratingProxy.class)).accepts(this.generationContext.getRuntimeHints());
+	}
+
+	@Test
+	void shouldProcessTransactionalOnInterfaceMethod() {
+		process(TransactionalOnInterfaceMethodBean.class);
+		assertThat(RuntimeHintsPredicates.reflection().onType(TransactionalOnMethodInterface.class)
+				.withMemberCategory(MemberCategory.INVOKE_DECLARED_METHODS)).accepts(this.generationContext.getRuntimeHints());
+		assertThat(RuntimeHintsPredicates.proxies().forInterfaces(TransactionalOnMethodInterface.class, SpringProxy.class, Advised.class, DecoratingProxy.class)).accepts(this.generationContext.getRuntimeHints());
+	}
+
+	private void process(Class<?> beanClass) {
+		BeanRegistrationAotContribution contribution = createContribution(beanClass);
+		if (contribution != null) {
+			contribution.applyTo(this.generationContext, mock(BeanRegistrationCode.class));
+		}
+	}
+
+	@Nullable
+	private BeanRegistrationAotContribution createContribution(Class<?> beanClass) {
+		DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
+		beanFactory.registerBeanDefinition(beanClass.getName(), new RootBeanDefinition(beanClass));
+		return this.processor.processAheadOfTime(RegisteredBean.of(beanFactory, beanClass.getName()));
+	}
+
+
+	@SuppressWarnings("unused")
+	static class NonAnnotatedBean {
+
+		public void notTransactional() {
+		}
+	}
+
+	@SuppressWarnings("unused")
+	@Transactional
+	static class NoInterfaceBean {
+
+		public void notTransactional() {
+		}
+	}
+
+	@Transactional
+	static class TransactionalOnTypeBean implements NonAnnotatedTransactionalInterface {
+
+		public void transactional() {
+		}
+	}
+
+	@jakarta.transaction.Transactional
+	static class JakartaTransactionalOnTypeBean implements NonAnnotatedTransactionalInterface {
+
+		public void transactional() {
+		}
+	}
+
+	interface NonAnnotatedTransactionalInterface {
+
+		void transactional();
+	}
+
+	@Transactional
+	interface TransactionalOnTypeInterface {
+
+		void transactional();
+	}
+
+	static class TransactionalOnClassMethodBean implements NonAnnotatedTransactionalInterface {
+
+		@Transactional
+		public void transactional() {
+		}
+	}
+
+	interface TransactionalOnMethodInterface {
+
+		@Transactional
+		void transactional();
+	}
+
+	static class TransactionalOnInterfaceMethodBean implements TransactionalOnMethodInterface {
+
+		@Transactional
+		public void transactional() {
+		}
+	}
+}