Merge branch '5.2.x'

# Conflicts:
#	build.gradle
#	spring-test/src/main/java/org/springframework/mock/http/server/reactive/MockServerHttpRequest.java
#	spring-web/src/main/java/org/springframework/http/HttpHeaders.java
#	spring-web/src/testFixtures/java/org/springframework/web/testfixture/http/server/reactive/MockServerHttpRequest.java

build.gradle

@@ -114,7 +114,7 @@ configure(allprojects) { project ->
 			dependency "net.sf.ehcache:ehcache:2.10.6"
 			dependency "org.ehcache:jcache:1.0.1"
 			dependency "org.ehcache:ehcache:3.4.0"
-			dependency "org.hibernate:hibernate-core:5.4.16.Final"
+			dependency "org.hibernate:hibernate-core:5.4.17.Final"
 			dependency "org.hibernate:hibernate-validator:6.1.5.Final"
 			dependency "org.webjars:webjars-locator-core:0.45"
 			dependency "org.webjars:underscorejs:1.8.3"
@@ -329,7 +329,7 @@ configure([rootProject] + javaProjects) { project ->
 	}
 
 	checkstyle {
-		toolVersion = "8.32"
+		toolVersion = "8.33"
 		configDirectory.set(rootProject.file("src/checkstyle"))
 	}
 

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/ReflectiveAspectJAdvisorFactory.java

@@ -76,9 +76,8 @@ public class ReflectiveAspectJAdvisorFactory extends AbstractAspectJAdvisorFacto
 				new InstanceComparator<>(
 						Around.class, Before.class, After.class, AfterReturning.class, AfterThrowing.class),
 				(Converter<Method, Annotation>) method -> {
-					AspectJAnnotation<?> annotation =
-						AbstractAspectJAdvisorFactory.findAspectJAnnotationOnMethod(method);
-					return (annotation != null ? annotation.getAnnotation() : null);
+					AspectJAnnotation<?> ann = AbstractAspectJAdvisorFactory.findAspectJAnnotationOnMethod(method);
+					return (ann != null ? ann.getAnnotation() : null);
 				});
 		Comparator<Method> methodNameComparator = new ConvertingComparator<>(Method::getName);
 		METHOD_COMPARATOR = adviceKindComparator.thenComparing(methodNameComparator);

spring-aop/src/main/java/org/springframework/aop/aspectj/autoproxy/AspectJPrecedenceComparator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -138,14 +138,8 @@ class AspectJPrecedenceComparator implements Comparator<Advisor> {
 	}
 
 	private int getAspectDeclarationOrder(Advisor anAdvisor) {
-		AspectJPrecedenceInformation precedenceInfo =
-			AspectJAopUtils.getAspectJPrecedenceInformationFor(anAdvisor);
-		if (precedenceInfo != null) {
-			return precedenceInfo.getDeclarationOrder();
-		}
-		else {
-			return 0;
-		}
+		AspectJPrecedenceInformation precedenceInfo = AspectJAopUtils.getAspectJPrecedenceInformationFor(anAdvisor);
+		return (precedenceInfo != null ? precedenceInfo.getDeclarationOrder() : 0);
 	}
 
 }

spring-context/src/main/java/org/springframework/context/ConfigurableApplicationContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -147,6 +147,15 @@ public interface ConfigurableApplicationContext extends ApplicationContext, Life
 	 */
 	void addApplicationListener(ApplicationListener<?> listener);
 
+	/**
+	 * Specify the ClassLoader to load class path resources and bean classes with.
+	 * <p>This context class loader will be passed to the internal bean factory.
+	 * @since 5.2.7
+	 * @see org.springframework.core.io.DefaultResourceLoader#DefaultResourceLoader(ClassLoader)
+	 * @see org.springframework.beans.factory.config.ConfigurableBeanFactory#setBeanClassLoader
+	 */
+	void setClassLoader(ClassLoader classLoader);
+
 	/**
 	 * Register the given protocol resolver with this application context,
 	 * allowing for additional resource protocols to be handled.

spring-context/src/main/java/org/springframework/scripting/groovy/GroovyScriptFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -158,7 +158,14 @@ public class GroovyScriptFactory implements ScriptFactory, BeanFactoryAware, Bea
 
 	@Override
 	public void setBeanClassLoader(ClassLoader classLoader) {
-		this.groovyClassLoader = buildGroovyClassLoader(classLoader);
+		if (classLoader instanceof GroovyClassLoader &&
+				(this.compilerConfiguration == null ||
+						((GroovyClassLoader) classLoader).hasCompatibleConfiguration(this.compilerConfiguration))) {
+			this.groovyClassLoader = (GroovyClassLoader) classLoader;
+		}
+		else {
+			this.groovyClassLoader = buildGroovyClassLoader(classLoader);
+		}
 	}
 
 	/**

spring-test/src/main/java/org/springframework/mock/http/server/reactive/MockServerHttpRequest.java

@@ -64,10 +64,10 @@ public final class MockServerHttpRequest extends AbstractServerHttpRequest {
 	private final MultiValueMap<String, HttpCookie> cookies;
 
 	@Nullable
-	private final InetSocketAddress remoteAddress;
+	private final InetSocketAddress localAddress;
 
 	@Nullable
-	private final InetSocketAddress localAddress;
+	private final InetSocketAddress remoteAddress;
 
 	@Nullable
 	private final SslInfo sslInfo;
@@ -103,18 +103,18 @@ public final class MockServerHttpRequest extends AbstractServerHttpRequest {
 
 	@Override
 	@Nullable
-	public InetSocketAddress getRemoteAddress() {
-		return this.remoteAddress;
-	}
-
-	@Nullable
-	@Override
 	public InetSocketAddress getLocalAddress() {
 		return this.localAddress;
 	}
 
+	@Override
 	@Nullable
+	public InetSocketAddress getRemoteAddress() {
+		return this.remoteAddress;
+	}
+
 	@Override
+	@Nullable
 	protected SslInfo initSslInfo() {
 		return this.sslInfo;
 	}

spring-web/src/main/java/org/springframework/http/HttpHeaders.java

@@ -385,7 +385,7 @@ public class HttpHeaders implements MultiValueMap<String, String>, Serializable
 	 * An empty {@code HttpHeaders} instance (immutable).
 	 * @since 5.0
 	 */
-	public static final HttpHeaders EMPTY = new ReadOnlyHttpHeaders(new HttpHeaders(new LinkedMultiValueMap<>(0)));
+	public static final HttpHeaders EMPTY = new ReadOnlyHttpHeaders(new LinkedMultiValueMap<>());
 
 	/**
 	 * Pattern matching ETag multiple field values in headers such as "If-Match", "If-None-Match".
@@ -1769,19 +1769,21 @@ public class HttpHeaders implements MultiValueMap<String, String>, Serializable
 
 
 	/**
-	 * Apply a read-only {@code HttpHeaders} wrapper around the given headers
-	 * that also caches the parsed representations of the "Accept" and
-	 * "Content-Type" headers.
+	 * Apply a read-only {@code HttpHeaders} wrapper around the given headers, if necessary.
+	 * <p>Also caches the parsed representations of the "Accept" and "Content-Type" headers.
+	 * @param headers the headers to expose
+	 * @return a read-only variant of the headers, or the original headers as-is
 	 */
-	public static HttpHeaders readOnlyHttpHeaders(MultiValueMap<String, String> headers) {
+	public static HttpHeaders readOnlyHttpHeaders(HttpHeaders headers) {
 		Assert.notNull(headers, "HttpHeaders must not be null");
-		return (headers instanceof ReadOnlyHttpHeaders ?
-				(HttpHeaders) headers : new ReadOnlyHttpHeaders(headers));
+		return (headers instanceof ReadOnlyHttpHeaders ? headers : new ReadOnlyHttpHeaders(headers.headers));
 	}
 
 	/**
 	 * Remove any read-only wrapper that may have been previously applied around
-	 * the given headers via {@link #readOnlyHttpHeaders(MultiValueMap)}.
+	 * the given headers via {@link #readOnlyHttpHeaders(HttpHeaders)}.
+	 * @param headers the headers to expose
+	 * @return a writable variant of the headers, or the original headers as-is
 	 * @since 5.1.1
 	 */
 	public static HttpHeaders writableHttpHeaders(HttpHeaders headers) {

spring-web/src/main/java/org/springframework/http/server/reactive/DefaultServerHttpRequestBuilder.java

@@ -195,20 +195,20 @@ class DefaultServerHttpRequestBuilder implements ServerHttpRequest.Builder {
 			return this.originalRequest.getCookies();
 		}
 
-		@Nullable
 		@Override
-		public InetSocketAddress getRemoteAddress() {
-			return this.originalRequest.getRemoteAddress();
-		}
-
 		@Nullable
-		@Override
 		public InetSocketAddress getLocalAddress() {
 			return this.originalRequest.getLocalAddress();
 		}
 
+		@Override
 		@Nullable
+		public InetSocketAddress getRemoteAddress() {
+			return this.originalRequest.getRemoteAddress();
+		}
+
 		@Override
+		@Nullable
 		protected SslInfo initSslInfo() {
 			return this.sslInfo;
 		}

spring-web/src/main/java/org/springframework/http/server/reactive/ReactorServerHttpRequest.java

@@ -95,6 +95,7 @@ class ReactorServerHttpRequest extends AbstractServerHttpRequest {
 		}
 		else {
 			InetSocketAddress localAddress = request.hostAddress();
+			Assert.state(localAddress != null, "No host address available");
 			return new URI(scheme, null, localAddress.getHostString(),
 					localAddress.getPort(), null, null, null);
 		}
@@ -145,13 +146,15 @@ class ReactorServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public InetSocketAddress getRemoteAddress() {
-		return this.request.remoteAddress();
+	@Nullable
+	public InetSocketAddress getLocalAddress() {
+		return this.request.hostAddress();
 	}
 
 	@Override
-	public InetSocketAddress getLocalAddress() {
-		return this.request.hostAddress();
+	@Nullable
+	public InetSocketAddress getRemoteAddress() {
+		return this.request.remoteAddress();
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/ServerHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -65,19 +65,19 @@ public interface ServerHttpRequest extends HttpRequest, ReactiveHttpInputMessage
 	MultiValueMap<String, HttpCookie> getCookies();
 
 	/**
-	 * Return the remote address where this request is connected to, if available.
+	 * Return the local address the request was accepted on, if available.
+	 * @since 5.2.3
 	 */
 	@Nullable
-	default InetSocketAddress getRemoteAddress() {
+	default InetSocketAddress getLocalAddress() {
 		return null;
 	}
 
 	/**
-	 * Return the local address the request was accepted on, if available.
-	 * 5.2.3
+	 * Return the remote address where this request is connected to, if available.
 	 */
 	@Nullable
-	default InetSocketAddress getLocalAddress() {
+	default InetSocketAddress getRemoteAddress() {
 		return null;
 	}
 

spring-web/src/main/java/org/springframework/http/server/reactive/ServerHttpRequestDecorator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -97,17 +97,19 @@ public class ServerHttpRequestDecorator implements ServerHttpRequest {
 	}
 
 	@Override
-	public InetSocketAddress getRemoteAddress() {
-		return getDelegate().getRemoteAddress();
-	}
-
-	@Override
+	@Nullable
 	public InetSocketAddress getLocalAddress() {
 		return getDelegate().getLocalAddress();
 	}
 
+	@Override
 	@Nullable
+	public InetSocketAddress getRemoteAddress() {
+		return getDelegate().getRemoteAddress();
+	}
+
 	@Override
+	@Nullable
 	public SslInfo getSslInfo() {
 		return getDelegate().getSslInfo();
 	}

spring-web/src/main/java/org/springframework/http/server/reactive/ServletServerHttpRequest.java

@@ -43,6 +43,7 @@ import org.springframework.core.io.buffer.DefaultDataBufferFactory;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
+import org.springframework.lang.NonNull;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
@@ -179,13 +180,15 @@ class ServletServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public InetSocketAddress getRemoteAddress() {
-		return new InetSocketAddress(this.request.getRemoteHost(), this.request.getRemotePort());
+	@NonNull
+	public InetSocketAddress getLocalAddress() {
+		return new InetSocketAddress(this.request.getLocalAddr(), this.request.getLocalPort());
 	}
 
 	@Override
-	public InetSocketAddress getLocalAddress() {
-		return new InetSocketAddress(this.request.getLocalAddr(), this.request.getLocalPort());
+	@NonNull
+	public InetSocketAddress getRemoteAddress() {
+		return new InetSocketAddress(this.request.getRemoteHost(), this.request.getRemotePort());
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -93,13 +93,15 @@ class UndertowServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public InetSocketAddress getRemoteAddress() {
-		return this.exchange.getSourceAddress();
+	@Nullable
+	public InetSocketAddress getLocalAddress() {
+		return this.exchange.getDestinationAddress();
 	}
 
 	@Override
-	public InetSocketAddress getLocalAddress() {
-		return this.exchange.getDestinationAddress();
+	@Nullable
+	public InetSocketAddress getRemoteAddress() {
+		return this.exchange.getSourceAddress();
 	}
 
 	@Nullable

spring-web/src/testFixtures/java/org/springframework/web/testfixture/http/server/reactive/MockServerHttpRequest.java

@@ -64,10 +64,10 @@ public final class MockServerHttpRequest extends AbstractServerHttpRequest {
 	private final MultiValueMap<String, HttpCookie> cookies;
 
 	@Nullable
-	private final InetSocketAddress remoteAddress;
+	private final InetSocketAddress localAddress;
 
 	@Nullable
-	private final InetSocketAddress localAddress;
+	private final InetSocketAddress remoteAddress;
 
 	@Nullable
 	private final SslInfo sslInfo;
@@ -103,18 +103,18 @@ public final class MockServerHttpRequest extends AbstractServerHttpRequest {
 
 	@Override
 	@Nullable
-	public InetSocketAddress getRemoteAddress() {
-		return this.remoteAddress;
-	}
-
-	@Nullable
-	@Override
 	public InetSocketAddress getLocalAddress() {
 		return this.localAddress;
 	}
 
+	@Override
 	@Nullable
+	public InetSocketAddress getRemoteAddress() {
+		return this.remoteAddress;
+	}
+
 	@Override
+	@Nullable
 	protected SslInfo initSslInfo() {
 		return this.sslInfo;
 	}

spring-webflux/src/main/java/org/springframework/web/reactive/config/DelegatingWebFluxConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -42,6 +42,7 @@ public class DelegatingWebFluxConfiguration extends WebFluxConfigurationSupport
 
 	private final WebFluxConfigurerComposite configurers = new WebFluxConfigurerComposite();
 
+
 	@Autowired(required = false)
 	public void setConfigurers(List<WebFluxConfigurer> configurers) {
 		if (!CollectionUtils.isEmpty(configurers)) {
@@ -49,6 +50,7 @@ public class DelegatingWebFluxConfiguration extends WebFluxConfigurationSupport
 		}
 	}
 
+
 	@Override
 	protected void configureContentTypeResolver(RequestedContentTypeResolverBuilder builder) {
 		this.configurers.configureContentTypeResolver(builder);
@@ -100,4 +102,5 @@ public class DelegatingWebFluxConfiguration extends WebFluxConfigurationSupport
 	protected void configureViewResolvers(ViewResolverRegistry registry) {
 		this.configurers.configureViewResolvers(registry);
 	}
+
 }

spring-webflux/src/main/java/org/springframework/web/reactive/config/WebFluxConfigurationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -93,10 +93,6 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	@Nullable
 	private ApplicationContext applicationContext;
 
-	@Nullable
-	public final ApplicationContext getApplicationContext() {
-		return this.applicationContext;
-	}
 
 	@Override
 	public void setApplicationContext(@Nullable ApplicationContext applicationContext) {
@@ -108,6 +104,12 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 		}
 	}
 
+	@Nullable
+	public final ApplicationContext getApplicationContext() {
+		return this.applicationContext;
+	}
+
+
 	@Bean
 	public DispatcherHandler webHandler() {
 		return new DispatcherHandler();
@@ -122,6 +124,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	@Bean
 	public RequestMappingHandlerMapping requestMappingHandlerMapping(
 			@Qualifier("webFluxContentTypeResolver") RequestedContentTypeResolver contentTypeResolver) {
+
 		RequestMappingHandlerMapping mapping = createRequestMappingHandlerMapping();
 		mapping.setOrder(0);
 		mapping.setContentTypeResolver(contentTypeResolver);
@@ -205,7 +208,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	@Bean
 	public RouterFunctionMapping routerFunctionMapping(ServerCodecConfigurer serverCodecConfigurer) {
 		RouterFunctionMapping mapping = createRouterFunctionMapping();
-		mapping.setOrder(-1); // go before RequestMappingHandlerMapping
+		mapping.setOrder(-1);  // go before RequestMappingHandlerMapping
 		mapping.setMessageReaders(serverCodecConfigurer.getReaders());
 		mapping.setCorsConfigurations(getCorsConfigurations());
 
@@ -330,8 +333,8 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	 * initializing all {@link WebDataBinder} instances.
 	 */
 	protected ConfigurableWebBindingInitializer getConfigurableWebBindingInitializer(
-			FormattingConversionService webFluxConversionService,
-			Validator webFluxValidator) {
+			FormattingConversionService webFluxConversionService, Validator webFluxValidator) {
+
 		ConfigurableWebBindingInitializer initializer = new ConfigurableWebBindingInitializer();
 		initializer.setConversionService(webFluxConversionService);
 		initializer.setValidator(webFluxValidator);
@@ -430,6 +433,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 			@Qualifier("webFluxAdapterRegistry") ReactiveAdapterRegistry reactiveAdapterRegistry,
 			ServerCodecConfigurer serverCodecConfigurer,
 			@Qualifier("webFluxContentTypeResolver") RequestedContentTypeResolver contentTypeResolver) {
+
 		return new ResponseEntityResultHandler(serverCodecConfigurer.getWriters(),
 				contentTypeResolver, reactiveAdapterRegistry);
 	}
@@ -439,6 +443,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 			@Qualifier("webFluxAdapterRegistry") ReactiveAdapterRegistry reactiveAdapterRegistry,
 			ServerCodecConfigurer serverCodecConfigurer,
 			@Qualifier("webFluxContentTypeResolver") RequestedContentTypeResolver contentTypeResolver) {
+
 		return new ResponseBodyResultHandler(serverCodecConfigurer.getWriters(),
 				contentTypeResolver, reactiveAdapterRegistry);
 	}
@@ -447,6 +452,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	public ViewResolutionResultHandler viewResolutionResultHandler(
 			@Qualifier("webFluxAdapterRegistry") ReactiveAdapterRegistry reactiveAdapterRegistry,
 			@Qualifier("webFluxContentTypeResolver") RequestedContentTypeResolver contentTypeResolver) {
+
 		ViewResolverRegistry registry = getViewResolverRegistry();
 		List<ViewResolver> resolvers = registry.getViewResolvers();
 		ViewResolutionResultHandler handler = new ViewResolutionResultHandler(
@@ -457,8 +463,7 @@ public class WebFluxConfigurationSupport implements ApplicationContextAware {
 	}
 
 	@Bean
-	public ServerResponseResultHandler serverResponseResultHandler(
-			ServerCodecConfigurer serverCodecConfigurer) {
+	public ServerResponseResultHandler serverResponseResultHandler(ServerCodecConfigurer serverCodecConfigurer) {
 		List<ViewResolver> resolvers = getViewResolverRegistry().getViewResolvers();
 		ServerResponseResultHandler handler = new ServerResponseResultHandler();
 		handler.setMessageWriters(serverCodecConfigurer.getWriters());

spring-websocket/src/main/java/org/springframework/web/socket/WebSocketHttpHeaders.java

@@ -26,7 +26,6 @@ import java.util.Set;
 import org.springframework.http.HttpHeaders;
 import org.springframework.lang.Nullable;
 import org.springframework.util.CollectionUtils;
-import org.springframework.util.MultiValueMap;
 
 /**
  * An {@link org.springframework.http.HttpHeaders} variant that adds support for
@@ -71,7 +70,8 @@ public class WebSocketHttpHeaders extends HttpHeaders {
 
 	/**
 	 * Returns {@code WebSocketHttpHeaders} object that can only be read, not written to.
-	 * @deprecated as of 5.2.7 in favor of {@link HttpHeaders#readOnlyHttpHeaders(MultiValueMap)}
+	 * @deprecated as of 5.1.16, in favor of calling {@link #WebSocketHttpHeaders(HttpHeaders)}
+	 * with a read-only wrapper from {@link HttpHeaders#readOnlyHttpHeaders(HttpHeaders)}
 	 */
 	@Deprecated
 	public static WebSocketHttpHeaders readOnlyWebSocketHttpHeaders(WebSocketHttpHeaders headers) {

src/docs/asciidoc/languages/dynamic-languages.adoc

@@ -159,9 +159,8 @@ The steps involved in using dynamic-language-backed beans are as follows:
   element in the XML configuration (you can define such beans programmatically by
   using the Spring API, although you will have to consult the source code for
   directions on how to do this, as this chapter does not cover this type of advanced configuration).
-  Note that this is an iterative step. You need at least one bean
-  definition for each dynamic language source file (although multiple bean definitions can reference the same dynamic language source
-  file).
+  Note that this is an iterative step. You need at least one bean definition for each dynamic
+  language source file (although multiple bean definitions can reference the same source file).
 
 The first two steps (testing and writing your dynamic language source files) are beyond
 the scope of this chapter. See the language specification and reference manual
@@ -578,9 +577,12 @@ If you do not use the Spring namespace support, you can still use the
 	<bean class="org.springframework.scripting.support.ScriptFactoryPostProcessor"/>
 ----
 
-NOTE: As of Spring Framework 4.3.3, you may also specify a Groovy `CompilationCustomizer`
-(such as an `ImportCustomizer`) or even a full Groovy `CompilerConfiguration` object
-in the same place as Spring's `GroovyObjectCustomizer`.
+NOTE: You may also specify a Groovy `CompilationCustomizer` (such as an `ImportCustomizer`)
+or even a full Groovy `CompilerConfiguration` object in the same place as Spring's
+`GroovyObjectCustomizer`. Furthermore, you may set a common `GroovyClassLoader` with custom
+configuration for your beans at the `ConfigurableApplicationContext.setClassLoader` level;
+this also leads to shared `GroovyClassLoader` usage and is therefore recommendable in case of
+a large number of scripted beans (avoiding an isolated `GroovyClassLoader` instance per bean).