Simplify auditing setup.

Use IsNewAwareAuditingHandler factory method to avoid exposing additional beans.

See: #2497

Author: christophstrobl

spring-data-jpa/src/main/java/org/springframework/data/jpa/repository/config/JpaAuditingRegistrar.java

@@ -21,12 +21,10 @@
 import java.lang.annotation.Annotation;
 
 import org.springframework.beans.factory.BeanDefinitionStoreException;
-import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.beans.factory.aspectj.AnnotationBeanConfigurerAspect;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.parsing.BeanComponentDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
-import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.beans.factory.support.RootBeanDefinition;
 import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
@@ -36,9 +34,6 @@
 import org.springframework.data.config.ParsingUtils;
 import org.springframework.data.jpa.domain.support.AuditingBeanFactoryPostProcessor;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
-import org.springframework.data.mapping.context.PersistentEntities;
-import org.springframework.data.repository.config.PersistentEntitiesFactoryBean;
-import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 
@@ -94,38 +89,9 @@ protected void registerAuditListenerBeanDefinition(BeanDefinition auditingHandle
 	protected void postProcess(BeanDefinitionBuilder builder, AuditingConfiguration configuration,
 			BeanDefinitionRegistry registry) {
 
-		String persistentEntitiesBeanName = detectPersistentEntitiesBeanName(registry);
-
-		if (persistentEntitiesBeanName == null) {
-
-			persistentEntitiesBeanName = BeanDefinitionReaderUtils.uniqueBeanName("jpaPersistentEntities", registry);
-
-			// TODO: https://github.com/spring-projects/spring-framework/issues/28728
-			BeanDefinitionBuilder definition = BeanDefinitionBuilder.genericBeanDefinition(PersistentEntities.class) //
-					.setFactoryMethod("of") //
-					.addConstructorArgReference(JPA_MAPPING_CONTEXT_BEAN_NAME);
-
-			registry.registerBeanDefinition(persistentEntitiesBeanName, definition.getBeanDefinition());
-		}
-
-		builder.addConstructorArgReference(persistentEntitiesBeanName);
+		builder.setFactoryMethod("from").addConstructorArgReference(JPA_MAPPING_CONTEXT_BEAN_NAME);
 	}
 
-	@Nullable
-	private static String detectPersistentEntitiesBeanName(BeanDefinitionRegistry registry) {
-
-		if (registry instanceof ListableBeanFactory beanFactory) {
-			for (String bn : beanFactory.getBeanNamesForType(PersistentEntities.class)) {
-				if (bn.startsWith("jpa")) {
-					return bn;
-				}
-			}
-		}
-
-		return null;
-	}
-
-
 	/**
 	 * @param registry, the {@link BeanDefinitionRegistry} to be used to register the
 	 *          {@link AnnotationBeanConfigurerAspect}.