Polishing

(cherry picked from commit ec1f5ca600)

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassEnhancer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -225,7 +225,6 @@ class ConfigurationClassEnhancer {
 			};
 			return new TransformingClassGenerator(cg, transformer);
 		}
-
 	}
 
 
@@ -334,6 +333,7 @@ class ConfigurationClassEnhancer {
 			return resolveBeanReference(beanMethod, beanMethodArgs, beanFactory, beanName);
 		}
 
+		@Nullable
 		private Object resolveBeanReference(Method beanMethod, Object[] beanMethodArgs,
 				ConfigurableBeanFactory beanFactory, String beanName) {
 

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassPostProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -386,11 +386,11 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 		});
 
 		// Detect any custom bean name generation strategy supplied through the enclosing application context
-		SingletonBeanRegistry sbr = null;
-		if (registry instanceof SingletonBeanRegistry _sbr) {
-			sbr = _sbr;
+		SingletonBeanRegistry singletonRegistry = null;
+		if (registry instanceof SingletonBeanRegistry sbr) {
+			singletonRegistry = sbr;
 			if (!this.localBeanNameGeneratorSet) {
-				BeanNameGenerator generator = (BeanNameGenerator) sbr.getSingleton(
+				BeanNameGenerator generator = (BeanNameGenerator) singletonRegistry.getSingleton(
 						AnnotationConfigUtils.CONFIGURATION_BEAN_NAME_GENERATOR);
 				if (generator != null) {
 					this.componentScanBeanNameGenerator = generator;
@@ -451,8 +451,8 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 		while (!candidates.isEmpty());
 
 		// Register the ImportRegistry as a bean in order to support ImportAware @Configuration classes
-		if (sbr != null && !sbr.containsSingleton(IMPORT_REGISTRY_BEAN_NAME)) {
-			sbr.registerSingleton(IMPORT_REGISTRY_BEAN_NAME, parser.getImportRegistry());
+		if (singletonRegistry != null && !singletonRegistry.containsSingleton(IMPORT_REGISTRY_BEAN_NAME)) {
+			singletonRegistry.registerSingleton(IMPORT_REGISTRY_BEAN_NAME, parser.getImportRegistry());
 		}
 
 		// Store the PropertySourceDescriptors to contribute them Ahead-of-time if necessary
@@ -550,6 +550,7 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 		}
 
 		@Override
+		@Nullable
 		public PropertyValues postProcessProperties(@Nullable PropertyValues pvs, Object bean, String beanName) {
 			// Inject the BeanFactory before AutowiredAnnotationBeanPostProcessor's
 			// postProcessProperties method attempts to autowire other configuration beans.
@@ -645,9 +646,9 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 			}
 			return mappings;
 		}
-
 	}
 
+
 	private static class PropertySourcesAotContribution implements BeanFactoryInitializationAotContribution {
 
 		private static final String ENVIRONMENT_VARIABLE = "environment";
@@ -743,15 +744,14 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 				return nonNull.get();
 			}
 		}
-
 	}
 
+
 	private static class ConfigurationClassProxyBeanRegistrationCodeFragments extends BeanRegistrationCodeFragmentsDecorator {
 
 		private final Class<?> proxyClass;
 
-		public ConfigurationClassProxyBeanRegistrationCodeFragments(BeanRegistrationCodeFragments codeFragments,
-				Class<?> proxyClass) {
+		public ConfigurationClassProxyBeanRegistrationCodeFragments(BeanRegistrationCodeFragments codeFragments, Class<?> proxyClass) {
 			super(codeFragments);
 			this.proxyClass = proxyClass;
 		}
@@ -759,6 +759,7 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 		@Override
 		public CodeBlock generateSetBeanDefinitionPropertiesCode(GenerationContext generationContext,
 				BeanRegistrationCode beanRegistrationCode, RootBeanDefinition beanDefinition, Predicate<String> attributeFilter) {
+
 			CodeBlock.Builder code = CodeBlock.builder();
 			code.add(super.generateSetBeanDefinitionPropertiesCode(generationContext,
 					beanRegistrationCode, beanDefinition, attributeFilter));
@@ -771,6 +772,7 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 		public CodeBlock generateInstanceSupplierCode(GenerationContext generationContext,
 				BeanRegistrationCode beanRegistrationCode, Executable constructorOrFactoryMethod,
 				boolean allowDirectSupplierShortcut) {
+
 			Executable executableToUse = proxyExecutable(generationContext.getRuntimeHints(), constructorOrFactoryMethod);
 			return super.generateInstanceSupplierCode(generationContext, beanRegistrationCode,
 					executableToUse, allowDirectSupplierShortcut);
@@ -788,7 +790,6 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 			}
 			return userExecutable;
 		}
-
 	}
 
 }

spring-context/src/test/java/org/springframework/context/annotation/ConfigurationClassPostProcessorAotContributionTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -99,8 +99,8 @@ class ConfigurationClassPostProcessorAotContributionTests {
 				initializer.accept(freshBeanFactory);
 				freshContext.refresh();
 				assertThat(freshBeanFactory.getBeanPostProcessors()).filteredOn(ImportAwareAotBeanPostProcessor.class::isInstance)
-						.singleElement().satisfies(postProcessor -> assertPostProcessorEntry(postProcessor, ImportAwareConfiguration.class,
-								ImportConfiguration.class));
+						.singleElement().satisfies(postProcessor ->
+								assertPostProcessorEntry(postProcessor, ImportAwareConfiguration.class, ImportConfiguration.class));
 				freshContext.close();
 			});
 		}
@@ -117,8 +117,8 @@ class ConfigurationClassPostProcessorAotContributionTests {
 				freshContext.refresh();
 				TestAwareCallbackBean bean = freshContext.getBean(TestAwareCallbackBean.class);
 				assertThat(bean.instances).hasSize(2);
-				assertThat(bean.instances.get(0)).isEqualTo(freshContext);
-				assertThat(bean.instances.get(1)).isInstanceOfSatisfying(AnnotationMetadata.class, metadata ->
+				assertThat(bean.instances).element(0).isEqualTo(freshContext);
+				assertThat(bean.instances).element(1).isInstanceOfSatisfying(AnnotationMetadata.class, metadata ->
 						assertThat(metadata.getClassName()).isEqualTo(TestAwareCallbackConfiguration.class.getName()));
 				freshContext.close();
 			});
@@ -236,13 +236,14 @@ class ConfigurationClassPostProcessorAotContributionTests {
 			}
 
 			@Override
-			public void afterPropertiesSet() throws Exception {
+			public void afterPropertiesSet() {
 				Assert.notNull(this.metadata, "Metadata was not injected");
 			}
 
 		}
 	}
 
+
 	@Nested
 	class PropertySourceTests {
 
@@ -362,9 +363,9 @@ class ConfigurationClassPostProcessorAotContributionTests {
 		static class PropertySourceWithCustomFactoryConfiguration {
 
 		}
-
 	}
 
+
 	@Nested
 	class ConfigurationClassProxyTests {
 
@@ -384,15 +385,14 @@ class ConfigurationClassPostProcessorAotContributionTests {
 					getRegisteredBean(CglibConfiguration.class))).isNotNull();
 		}
 
-
 		private RegisteredBean getRegisteredBean(Class<?> bean) {
 			this.beanFactory.registerBeanDefinition("test", new RootBeanDefinition(bean));
 			this.processor.postProcessBeanFactory(this.beanFactory);
 			return RegisteredBean.of(this.beanFactory, "test");
 		}
-
 	}
 
+
 	@Nullable
 	private BeanFactoryInitializationAotContribution getContribution(Class<?>... types) {
 		DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
@@ -410,8 +410,8 @@ class ConfigurationClassPostProcessorAotContributionTests {
 				.containsExactly(entry(key.getName(), value.getName()));
 	}
 
-	static class CustomPropertySourcesFactory extends DefaultPropertySourceFactory {
 
+	static class CustomPropertySourcesFactory extends DefaultPropertySourceFactory {
 	}
 
 }

spring-core/src/main/java/org/springframework/cglib/core/ReflectUtils.java

@@ -75,7 +75,7 @@ public class ReflectUtils {
 		Throwable throwable = null;
 		try {
 			classLoaderDefineClass = ClassLoader.class.getDeclaredMethod("defineClass",
-							String.class, byte[].class, Integer.TYPE, Integer.TYPE, ProtectionDomain.class);
+					String.class, byte[].class, Integer.TYPE, Integer.TYPE, ProtectionDomain.class);
 		}
 		catch (Throwable t) {
 			classLoaderDefineClass = null;