Add missing EntityManagerFactory hints for SharedEntityManagerCreator

Closes gh-30523

spring-orm/src/main/java/org/springframework/orm/jpa/EntityManagerRuntimeHints.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -16,14 +16,17 @@
 
 package org.springframework.orm.jpa;
 
+import java.util.Collections;
+
+import org.springframework.aot.hint.ExecutableMode;
 import org.springframework.aot.hint.RuntimeHints;
 import org.springframework.aot.hint.RuntimeHintsRegistrar;
 import org.springframework.aot.hint.TypeReference;
 import org.springframework.util.ClassUtils;
 
 /**
- * {@link RuntimeHintsRegistrar} implementation that makes sure JDK proxy hints related to
- * {@link AbstractEntityManagerFactoryBean} are registered.
+ * {@link RuntimeHintsRegistrar} implementation that makes sure that hints related to
+ * {@link AbstractEntityManagerFactoryBean} and {@link SharedEntityManagerCreator} are registered.
  *
  * @author Sebastien Deleuze
  * @since 6.0
@@ -32,6 +35,8 @@ class EntityManagerRuntimeHints implements RuntimeHintsRegistrar {
 
 	private static final String HIBERNATE_SESSION_FACTORY_CLASS_NAME = "org.hibernate.SessionFactory";
 
+	private static final String ENTITY_MANAGER_FACTORY_CLASS_NAME = "jakarta.persistence.EntityManagerFactory";
+
 	@Override
 	public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
 		if (ClassUtils.isPresent(HIBERNATE_SESSION_FACTORY_CLASS_NAME, classLoader)) {
@@ -40,5 +45,13 @@ class EntityManagerRuntimeHints implements RuntimeHintsRegistrar {
 			hints.proxies().registerJdkProxy(TypeReference.of("org.hibernate.Session"),
 					TypeReference.of(EntityManagerProxy.class));
 		}
+		if (ClassUtils.isPresent(ENTITY_MANAGER_FACTORY_CLASS_NAME, classLoader)) {
+			hints.reflection().registerType(TypeReference.of(ENTITY_MANAGER_FACTORY_CLASS_NAME), builder -> {
+				builder.onReachableType(SharedEntityManagerCreator.class).withMethod("getCriteriaBuilder",
+						Collections.emptyList(), ExecutableMode.INVOKE);
+				builder.onReachableType(SharedEntityManagerCreator.class).withMethod("getMetamodel",
+						Collections.emptyList(), ExecutableMode.INVOKE);
+			});
+		}
 	}
 }

spring-orm/src/test/java/org/springframework/orm/jpa/EntityManagerRuntimeHintsTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -16,6 +16,7 @@
 
 package org.springframework.orm.jpa;
 
+import jakarta.persistence.EntityManagerFactory;
 import org.hibernate.Session;
 import org.hibernate.SessionFactory;
 import org.junit.jupiter.api.BeforeEach;
@@ -56,4 +57,10 @@ class EntityManagerRuntimeHintsTests {
 		assertThat(RuntimeHintsPredicates.proxies().forInterfaces(Session.class, EntityManagerProxy.class))
 				.accepts(this.hints);
 	}
+
+	@Test
+	void entityManagerFactoryHasReflectionHints() {
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(EntityManagerFactory.class, "getCriteriaBuilder")).accepts(this.hints);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(EntityManagerFactory.class, "getMetamodel")).accepts(this.hints);
+	}
 }