Harmonize RuntimeHintsRegistrar implementations

Closes gh-28801

spring-tx/src/main/java/org/springframework/transaction/annotation/ProxyTransactionManagementConfiguration.java

@@ -38,7 +38,7 @@ import org.springframework.transaction.interceptor.TransactionInterceptor;
  */
 @Configuration(proxyBeanMethods = false)
 @Role(BeanDefinition.ROLE_INFRASTRUCTURE)
-@ImportRuntimeHints(TransactionRuntimeHintsRegistrar.class)
+@ImportRuntimeHints(TransactionRuntimeHints.class)
 public class ProxyTransactionManagementConfiguration extends AbstractTransactionManagementConfiguration {
 
 	@Bean(name = TransactionManagementConfigUtils.TRANSACTION_ADVISOR_BEAN_NAME)

spring-tx/src/main/java/org/springframework/transaction/annotation/TransactionBeanRegistrationAotProcessor.java

@@ -39,9 +39,9 @@ import org.springframework.util.ReflectionUtils;
  *
  * @author Sebastien Deleuze
  * @since 6.0
- * @see TransactionRuntimeHintsRegistrar
+ * @see TransactionRuntimeHints
  */
-public class TransactionBeanRegistrationAotProcessor implements BeanRegistrationAotProcessor {
+class TransactionBeanRegistrationAotProcessor implements BeanRegistrationAotProcessor {
 
 	private final static String JAKARTA_TRANSACTIONAL_CLASS_NAME = "jakarta.transaction.Transactional";
 
@@ -70,7 +70,7 @@ public class TransactionBeanRegistrationAotProcessor implements BeanRegistration
 
 	private static class TransactionBeanRegistrationAotContribution implements BeanRegistrationAotContribution {
 
-		private Class<?> beanClass;
+		private final Class<?> beanClass;
 
 		public TransactionBeanRegistrationAotContribution(Class<?> beanClass) {
 			this.beanClass = beanClass;

spring-tx/src/main/java/org/springframework/transaction/annotation/TransactionRuntimeHints.java

@@ -16,13 +16,14 @@
 
 package org.springframework.transaction.annotation;
 
+import java.util.List;
+
 import org.springframework.aot.hint.MemberCategory;
 import org.springframework.aot.hint.RuntimeHints;
 import org.springframework.aot.hint.RuntimeHintsRegistrar;
 import org.springframework.aot.hint.TypeReference;
 import org.springframework.aot.hint.support.RuntimeHintsUtils;
-
-import static java.util.Arrays.asList;
+import org.springframework.transaction.TransactionDefinition;
 
 /**
  * {@link RuntimeHintsRegistrar} implementation that registers runtime hints for
@@ -32,17 +33,16 @@ import static java.util.Arrays.asList;
  * @since 6.0
  * @see TransactionBeanRegistrationAotProcessor
  */
-public class TransactionRuntimeHintsRegistrar implements RuntimeHintsRegistrar {
+class TransactionRuntimeHints implements RuntimeHintsRegistrar {
 
 	@Override
 	public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
-		RuntimeHintsUtils.registerAnnotation(hints, org.springframework.transaction.annotation.Transactional.class);
-
+		RuntimeHintsUtils.registerAnnotation(hints, Transactional.class);
 		hints.reflection()
-				.registerTypes(asList(
-								TypeReference.of(org.springframework.transaction.annotation.Isolation.class),
-								TypeReference.of(org.springframework.transaction.annotation.Propagation.class),
-								TypeReference.of(org.springframework.transaction.TransactionDefinition.class)),
+				.registerTypes(List.of(
+								TypeReference.of(Isolation.class),
+								TypeReference.of(Propagation.class),
+								TypeReference.of(TransactionDefinition.class)),
 						builder -> builder.withMembers(MemberCategory.DECLARED_FIELDS));
 	}
 }