Polishing

spring-context/src/main/java/org/springframework/validation/beanvalidation/BeanValidationBeanRegistrationAotProcessor.java

@@ -54,7 +54,7 @@ import org.springframework.util.ClassUtils;
  */
 class BeanValidationBeanRegistrationAotProcessor implements BeanRegistrationAotProcessor {
 
-	private static final boolean isBeanValidationPresent = ClassUtils.isPresent(
+	private static final boolean beanValidationPresent = ClassUtils.isPresent(
 			"jakarta.validation.Validation", BeanValidationBeanRegistrationAotProcessor.class.getClassLoader());
 
 	private static final Log logger = LogFactory.getLog(BeanValidationBeanRegistrationAotProcessor.class);
@@ -63,13 +63,16 @@ class BeanValidationBeanRegistrationAotProcessor implements BeanRegistrationAotP
 	@Override
 	@Nullable
 	public BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
-		if (isBeanValidationPresent) {
+		if (beanValidationPresent) {
 			return BeanValidationDelegate.processAheadOfTime(registeredBean);
 		}
 		return null;
 	}
 
 
+	/**
+	 * Inner class to avoid a hard dependency on the Bean Validation API at runtime.
+	 */
 	private static class BeanValidationDelegate {
 
 		@Nullable

spring-orm/src/main/java/org/springframework/orm/jpa/persistenceunit/DefaultPersistenceUnitManager.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.
@@ -444,9 +444,12 @@ public class DefaultPersistenceUnitManager
 
 		List<SpringPersistenceUnitInfo> puis = readPersistenceUnitInfos();
 		for (SpringPersistenceUnitInfo pui : puis) {
+			// Determine default persistence unit root URL
 			if (pui.getPersistenceUnitRootUrl() == null) {
 				pui.setPersistenceUnitRootUrl(determineDefaultPersistenceUnitRootUrl());
 			}
+
+			// Override DataSource and cache/validation mode
 			if (pui.getJtaDataSource() == null && this.defaultJtaDataSource != null) {
 				pui.setJtaDataSource(this.defaultJtaDataSource);
 			}
@@ -459,13 +462,17 @@ public class DefaultPersistenceUnitManager
 			if (this.validationMode != null) {
 				pui.setValidationMode(this.validationMode);
 			}
+
+			// Initialize persistence unit ClassLoader
 			if (this.loadTimeWeaver != null) {
 				pui.init(this.loadTimeWeaver);
 			}
 			else {
 				pui.init(this.resourcePatternResolver.getClassLoader());
 			}
+
 			postProcessPersistenceUnitInfo(pui);
+
 			String name = pui.getPersistenceUnitName();
 			if (!this.persistenceUnitInfoNames.add(name) && !isPersistenceUnitOverrideAllowed()) {
 				StringBuilder msg = new StringBuilder();