Polishing

spring-context/src/main/java/org/springframework/jndi/support/SimpleJndiBeanFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -209,13 +209,12 @@ public class SimpleJndiBeanFactory extends JndiLocatorSupport implements BeanFac
 	@SuppressWarnings("unchecked")
 	private <T> T doGetSingleton(String name, @Nullable Class<T> requiredType) throws NamingException {
 		synchronized (this.singletonObjects) {
-			if (this.singletonObjects.containsKey(name)) {
-				Object jndiObject = this.singletonObjects.get(name);
-				if (requiredType != null && !requiredType.isInstance(jndiObject)) {
-					throw new TypeMismatchNamingException(
-							convertJndiName(name), requiredType, (jndiObject != null ? jndiObject.getClass() : null));
+			Object singleton = this.singletonObjects.get(name);
+			if (singleton != null) {
+				if (requiredType != null && !requiredType.isInstance(singleton)) {
+					throw new TypeMismatchNamingException(convertJndiName(name), requiredType, singleton.getClass());
 				}
-				return (T) jndiObject;
+				return (T) singleton;
 			}
 			T jndiObject = lookup(name, requiredType);
 			this.singletonObjects.put(name, jndiObject);
@@ -229,14 +228,12 @@ public class SimpleJndiBeanFactory extends JndiLocatorSupport implements BeanFac
 		}
 		else {
 			synchronized (this.resourceTypes) {
-				if (this.resourceTypes.containsKey(name)) {
-					return this.resourceTypes.get(name);
-				}
-				else {
-					Class<?> type = lookup(name, null).getClass();
+				Class<?> type = this.resourceTypes.get(name);
+				if (type == null) {
+					type = lookup(name, null).getClass();
 					this.resourceTypes.put(name, type);
-					return type;
 				}
+				return type;
 			}
 		}
 	}

spring-core/src/main/java/org/springframework/core/ReactiveAdapterRegistry.java

@@ -41,7 +41,7 @@ import org.springframework.util.ReflectionUtils;
  *
  * <p>By default, depending on classpath availability, adapters are registered
  * for Reactor, RxJava 1, RxJava 2 types, {@link CompletableFuture}, and Java 9+
- * Flow.Publisher.
+ * {@code Flow.Publisher}.
  *
  * @author Rossen Stoyanchev
  * @author Sebastien Deleuze
@@ -54,7 +54,7 @@ public class ReactiveAdapterRegistry {
 
 	private final boolean reactorPresent;
 
-	private final List<ReactiveAdapter> adapters = new ArrayList<>(32);
+	private final List<ReactiveAdapter> adapters = new ArrayList<>();
 
 
 	/**
@@ -112,13 +112,13 @@ public class ReactiveAdapterRegistry {
 
 	/**
 	 * Register a reactive type along with functions to adapt to and from a
-	 * Reactive Streams {@link Publisher}. The functions can assume their
-	 * input is never be {@code null} nor {@link Optional}.
+	 * Reactive Streams {@link Publisher}. The function arguments assume that
+	 * their input is neither {@code null} nor {@link Optional}.
 	 */
 	public void registerReactiveType(ReactiveTypeDescriptor descriptor,
 			Function<Object, Publisher<?>> toAdapter, Function<Publisher<?>, Object> fromAdapter) {
 
-		if (reactorPresent) {
+		if (this.reactorPresent) {
 			this.adapters.add(new ReactorAdapter(descriptor, toAdapter, fromAdapter));
 		}
 		else {
@@ -128,6 +128,7 @@ public class ReactiveAdapterRegistry {
 
 	/**
 	 * Get the adapter for the given reactive type.
+	 * @return the corresponding adapter, or {@code null} if none available
 	 */
 	@Nullable
 	public ReactiveAdapter getAdapter(Class<?> reactiveType) {
@@ -141,6 +142,7 @@ public class ReactiveAdapterRegistry {
 	 * (may be {@code null} if a concrete source object is given)
 	 * @param source an instance of the reactive type
 	 * (i.e. to adapt from; may be {@code null} if the reactive type is specified)
+	 * @return the corresponding adapter, or {@code null} if none available
 	 */
 	@Nullable
 	public ReactiveAdapter getAdapter(@Nullable Class<?> reactiveType, @Nullable Object source) {
@@ -162,13 +164,13 @@ public class ReactiveAdapterRegistry {
 
 
 	/**
-	 * Return a shared default {@code ReactiveAdapterRegistry} instance, lazily
-	 * building it once needed.
+	 * Return a shared default {@code ReactiveAdapterRegistry} instance,
+	 * lazily building it once needed.
 	 * <p><b>NOTE:</b> We highly recommend passing a long-lived, pre-configured
 	 * {@code ReactiveAdapterRegistry} instance for customization purposes.
 	 * This accessor is only meant as a fallback for code paths that want to
 	 * fall back on a default instance if one isn't provided.
-	 * @return the shared {@code ReactiveAdapterRegistry} instance (never {@code null})
+	 * @return the shared {@code ReactiveAdapterRegistry} instance
 	 * @since 5.0.2
 	 */
 	public static ReactiveAdapterRegistry getSharedInstance() {

spring-core/src/main/java/org/springframework/util/Base64Utils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -89,7 +89,7 @@ public abstract class Base64Utils {
 
 	/**
 	 * Base64-encode the given byte array to a String.
-	 * @param src the original byte array (may be {@code null})
+	 * @param src the original byte array
 	 * @return the encoded byte array as a UTF-8 String
 	 */
 	public static String encodeToString(byte[] src) {

spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/AsyncHandlerMethodReturnValueHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -43,8 +43,8 @@ public interface AsyncHandlerMethodReturnValueHandler extends HandlerMethodRetur
 	 * {@link #supportsReturnType(org.springframework.core.MethodParameter)}
 	 * is called and it returns {@code true}.
 	 * @param returnValue the value returned from the handler method
-	 * @param returnType the type of the return value.
-	 * @return true if the return value type represents an async value.
+	 * @param returnType the type of the return value
+	 * @return {@code true} if the return value type represents an async value
 	 */
 	boolean isAsyncReturnValue(Object returnValue, MethodParameter returnType);
 
@@ -58,9 +58,9 @@ public interface AsyncHandlerMethodReturnValueHandler extends HandlerMethodRetur
 	 * {@link #supportsReturnType(org.springframework.core.MethodParameter)}
 	 * is called and it returns {@code true}.
 	 * @param returnValue the value returned from the handler method
-	 * @param returnType the type of the return value.
-	 * @return the resulting ListenableFuture or {@code null} in which case no
-	 * further handling will be performed.
+	 * @param returnType the type of the return value
+	 * @return the resulting ListenableFuture, or {@code null} in which case
+	 * no further handling will be performed
 	 */
 	@Nullable
 	ListenableFuture<?> toListenableFuture(Object returnValue, MethodParameter returnType);

spring-messaging/src/main/java/org/springframework/messaging/support/AbstractMessageChannel.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -42,10 +42,10 @@ public abstract class AbstractMessageChannel implements MessageChannel, Intercep
 
 	protected final Log logger = LogFactory.getLog(getClass());
 
-	private final List<ChannelInterceptor> interceptors = new ArrayList<>(5);
-
 	private String beanName;
 
+	private final List<ChannelInterceptor> interceptors = new ArrayList<>(5);
+
 
 	public AbstractMessageChannel() {
 		this.beanName = getClass().getSimpleName() + "@" + ObjectUtils.getIdentityHexString(this);

spring-oxm/src/main/java/org/springframework/oxm/jaxb/Jaxb2Marshaller.java

@@ -415,7 +415,7 @@ public class Jaxb2Marshaller implements MimeMarshaller, MimeUnmarshaller, Generi
 	}
 
 	/**
-	 * Indicates whether DTD parsing should be supported.
+	 * Indicate whether DTD parsing should be supported.
 	 * <p>Default is {@code false} meaning that DTD is disabled.
 	 */
 	public void setSupportDtd(boolean supportDtd) {
@@ -423,14 +423,14 @@ public class Jaxb2Marshaller implements MimeMarshaller, MimeUnmarshaller, Generi
 	}
 
 	/**
-	 * Whether DTD parsing is supported.
+	 * Return whether DTD parsing is supported.
 	 */
 	public boolean isSupportDtd() {
 		return this.supportDtd;
 	}
 
 	/**
-	 * Indicates whether external XML entities are processed when unmarshalling.
+	 * Indicate whether external XML entities are processed when unmarshalling.
 	 * <p>Default is {@code false}, meaning that external entities are not resolved.
 	 * Note that processing of external entities will only be enabled/disabled when the
 	 * {@code Source} passed to {@link #unmarshal(Source)} is a {@link SAXSource} or
@@ -442,12 +442,12 @@ public class Jaxb2Marshaller implements MimeMarshaller, MimeUnmarshaller, Generi
 	public void setProcessExternalEntities(boolean processExternalEntities) {
 		this.processExternalEntities = processExternalEntities;
 		if (processExternalEntities) {
-			setSupportDtd(true);
+			this.supportDtd = true;
 		}
 	}
 
 	/**
-	 * Returns the configured value for whether XML external entities are allowed.
+	 * Return whether XML external entities are allowed.
 	 */
 	public boolean isProcessExternalEntities() {
 		return this.processExternalEntities;

spring-oxm/src/main/java/org/springframework/oxm/support/AbstractMarshaller.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -22,7 +22,6 @@ import java.io.OutputStream;
 import java.io.Reader;
 import java.io.StringReader;
 import java.io.Writer;
-
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
@@ -87,7 +86,7 @@ public abstract class AbstractMarshaller implements Marshaller, Unmarshaller {
 
 
 	/**
-	 * Indicates whether DTD parsing should be supported.
+	 * Indicate whether DTD parsing should be supported.
 	 * <p>Default is {@code false} meaning that DTD is disabled.
 	 */
 	public void setSupportDtd(boolean supportDtd) {
@@ -95,14 +94,14 @@ public abstract class AbstractMarshaller implements Marshaller, Unmarshaller {
 	}
 
 	/**
-	 * Whether DTD parsing is supported.
+	 * Return whether DTD parsing is supported.
 	 */
 	public boolean isSupportDtd() {
 		return this.supportDtd;
 	}
 
 	/**
-	 * Indicates whether external XML entities are processed when unmarshalling.
+	 * Indicate whether external XML entities are processed when unmarshalling.
 	 * <p>Default is {@code false}, meaning that external entities are not resolved.
 	 * Note that processing of external entities will only be enabled/disabled when the
 	 * {@code Source} passed to {@link #unmarshal(Source)} is a {@link SAXSource} or
@@ -114,12 +113,12 @@ public abstract class AbstractMarshaller implements Marshaller, Unmarshaller {
 	public void setProcessExternalEntities(boolean processExternalEntities) {
 		this.processExternalEntities = processExternalEntities;
 		if (processExternalEntities) {
-			setSupportDtd(true);
+			this.supportDtd = true;
 		}
 	}
 
 	/**
-	 * Returns the configured value for whether XML external entities are allowed.
+	 * Return whether XML external entities are allowed.
 	 * @see #createXmlReader()
 	 */
 	public boolean isProcessExternalEntities() {

spring-test/src/test/java/org/springframework/test/web/client/DefaultRequestExpectationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -26,15 +26,11 @@ import org.junit.rules.ExpectedException;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.client.ClientHttpRequest;
 
-import static junit.framework.TestCase.assertFalse;
-import static org.junit.Assert.assertTrue;
-import static org.springframework.http.HttpMethod.GET;
-import static org.springframework.http.HttpMethod.POST;
-import static org.springframework.test.web.client.ExpectedCount.once;
-import static org.springframework.test.web.client.ExpectedCount.twice;
-import static org.springframework.test.web.client.match.MockRestRequestMatchers.method;
-import static org.springframework.test.web.client.match.MockRestRequestMatchers.requestTo;
-import static org.springframework.test.web.client.response.MockRestResponseCreators.withSuccess;
+import static org.junit.Assert.*;
+import static org.springframework.http.HttpMethod.*;
+import static org.springframework.test.web.client.ExpectedCount.*;
+import static org.springframework.test.web.client.match.MockRestRequestMatchers.*;
+import static org.springframework.test.web.client.response.MockRestResponseCreators.*;
 
 /**
  * Unit tests for {@link DefaultRequestExpectation}.
@@ -86,7 +82,6 @@ public class DefaultRequestExpectationTests {
 	}
 
 
-
 	@SuppressWarnings("deprecation")
 	private ClientHttpRequest createRequest(HttpMethod method, String url) {
 		try {

spring-test/src/test/java/org/springframework/test/web/client/MockRestServiceServerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -23,6 +23,7 @@ import org.junit.Test;
 import org.springframework.test.web.client.MockRestServiceServer.MockRestServiceServerBuilder;
 import org.springframework.web.client.RestTemplate;
 
+import static org.junit.Assert.*;
 import static org.springframework.http.HttpMethod.*;
 import static org.springframework.test.web.client.match.MockRestRequestMatchers.*;
 import static org.springframework.test.web.client.response.MockRestResponseCreators.*;
@@ -124,6 +125,7 @@ public class MockRestServiceServerTests {
 
 		try {
 			this.restTemplate.getForEntity("/some-service/some-endpoint", String.class);
+			fail("Expected exception");
 		}
 		catch (Exception ex) {
 			this.restTemplate.postForEntity("/reporting-service/report-error", ex.toString(), String.class);

spring-tx/src/main/java/org/springframework/transaction/annotation/Propagation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -40,7 +40,7 @@ public enum Propagation {
 	 * Support a current transaction, execute non-transactionally if none exists.
 	 * Analogous to EJB transaction attribute of the same name.
 	 * <p>Note: For transaction managers with transaction synchronization,
-	 * PROPAGATION_SUPPORTS is slightly different from no transaction at all,
+	 * {@code SUPPORTS} is slightly different from no transaction at all,
 	 * as it defines a transaction scope that synchronization will apply for.
 	 * As a consequence, the same resources (JDBC Connection, Hibernate Session, etc)
 	 * will be shared for the entire specified scope. Note that this depends on
@@ -87,7 +87,7 @@ public enum Propagation {
 
 	/**
 	 * Execute within a nested transaction if a current transaction exists,
-	 * behave like PROPAGATION_REQUIRED else. There is no analogous feature in EJB.
+	 * behave like {@code REQUIRED} else. There is no analogous feature in EJB.
 	 * <p>Note: Actual creation of a nested transaction will only work on specific
 	 * transaction managers. Out of the box, this only applies to the JDBC
 	 * DataSourceTransactionManager when working on a JDBC 3.0 driver.

spring-web/src/main/java/org/springframework/http/codec/HttpMessageWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -34,12 +34,11 @@ import org.springframework.lang.Nullable;
  * Strategy for encoding a stream of objects of type {@code <T>} and writing
  * the encoded stream of bytes to an {@link ReactiveHttpOutputMessage}.
  *
- * @param <T> the type of objects in the input stream
- *
  * @author Rossen Stoyanchev
  * @author Arjen Poutsma
  * @author Sebastien Deleuze
  * @since 5.0
+ * @param <T> the type of objects in the input stream
  */
 public interface HttpMessageWriter<T> {
 
@@ -51,7 +50,7 @@ public interface HttpMessageWriter<T> {
 	/**
 	 * Whether the given object type is supported by this writer.
 	 * @param elementType the type of object to check
-	 * @param mediaType the media type for the write, possibly {@code null}
+	 * @param mediaType the media type for the write (possibly {@code null})
 	 * @return {@code true} if writable, {@code false} otherwise
 	 */
 	boolean canWrite(ResolvableType elementType, @Nullable MediaType mediaType);
@@ -61,8 +60,8 @@ public interface HttpMessageWriter<T> {
 	 * @param inputStream the objects to write
 	 * @param elementType the type of objects in the stream which must have been
 	 * previously checked via {@link #canWrite(ResolvableType, MediaType)}
-	 * @param mediaType the content type for the write, possibly {@code null} to
-	 * indicate that the default content type of the writer must be used.
+	 * @param mediaType the content type for the write (possibly {@code null} to
+	 * indicate that the default content type of the writer must be used)
 	 * @param message the message to write to
 	 * @param hints additional information about how to encode and write
 	 * @return indicates completion or error
@@ -78,8 +77,8 @@ public interface HttpMessageWriter<T> {
 	 * value; for annotated controllers, the {@link MethodParameter} can be
 	 * accessed via {@link ResolvableType#getSource()}.
 	 * @param elementType the type of Objects in the input stream
-	 * @param mediaType the content type to use, possibly {@code null} indicating
-	 * the default content type of the writer should be used.
+	 * @param mediaType the content type to use (possibly {@code null} indicating
+	 * the default content type of the writer should be used)
 	 * @param request the current request
 	 * @param response the current response
 	 * @return a {@link Mono} that indicates completion of writing or error

spring-web/src/main/java/org/springframework/http/converter/xml/Jaxb2RootElementHttpMessageConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -71,7 +71,7 @@ public class Jaxb2RootElementHttpMessageConverter extends AbstractJaxb2HttpMessa
 
 
 	/**
-	 * Indicates whether DTD parsing should be supported.
+	 * Indicate whether DTD parsing should be supported.
 	 * <p>Default is {@code false} meaning that DTD is disabled.
 	 */
 	public void setSupportDtd(boolean supportDtd) {
@@ -79,14 +79,14 @@ public class Jaxb2RootElementHttpMessageConverter extends AbstractJaxb2HttpMessa
 	}
 
 	/**
-	 * Whether DTD parsing is supported.
+	 * Return whether DTD parsing is supported.
 	 */
 	public boolean isSupportDtd() {
 		return this.supportDtd;
 	}
 
 	/**
-	 * Indicates whether external XML entities are processed when converting to a Source.
+	 * Indicate whether external XML entities are processed when converting to a Source.
 	 * <p>Default is {@code false}, meaning that external entities are not resolved.
 	 * <p><strong>Note:</strong> setting this option to {@code true} also
 	 * automatically sets {@link #setSupportDtd} to {@code true}.
@@ -94,12 +94,12 @@ public class Jaxb2RootElementHttpMessageConverter extends AbstractJaxb2HttpMessa
 	public void setProcessExternalEntities(boolean processExternalEntities) {
 		this.processExternalEntities = processExternalEntities;
 		if (processExternalEntities) {
-			setSupportDtd(true);
+			this.supportDtd = true;
 		}
 	}
 
 	/**
-	 * Returns the configured value for whether XML external entities are allowed.
+	 * Return whether XML external entities are allowed.
 	 */
 	public boolean isProcessExternalEntities() {
 		return this.processExternalEntities;

spring-web/src/main/java/org/springframework/http/converter/xml/SourceHttpMessageConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -62,6 +62,7 @@ import org.springframework.util.StreamUtils;
  * @author Arjen Poutsma
  * @author Rossen Stoyanchev
  * @since 3.0
+ * @param <T> the converted object type
  */
 public class SourceHttpMessageConverter<T extends Source> extends AbstractHttpMessageConverter<T> {
 
@@ -99,7 +100,7 @@ public class SourceHttpMessageConverter<T extends Source> extends AbstractHttpMe
 
 
 	/**
-	 * Indicates whether DTD parsing should be supported.
+	 * Indicate whether DTD parsing should be supported.
 	 * <p>Default is {@code false} meaning that DTD is disabled.
 	 */
 	public void setSupportDtd(boolean supportDtd) {
@@ -107,14 +108,14 @@ public class SourceHttpMessageConverter<T extends Source> extends AbstractHttpMe
 	}
 
 	/**
-	 * Whether DTD parsing is supported.
+	 * Return whether DTD parsing is supported.
 	 */
 	public boolean isSupportDtd() {
 		return this.supportDtd;
 	}
 
 	/**
-	 * Indicates whether external XML entities are processed when converting to a Source.
+	 * Indicate whether external XML entities are processed when converting to a Source.
 	 * <p>Default is {@code false}, meaning that external entities are not resolved.
 	 * <p><strong>Note:</strong> setting this option to {@code true} also
 	 * automatically sets {@link #setSupportDtd} to {@code true}.
@@ -122,12 +123,12 @@ public class SourceHttpMessageConverter<T extends Source> extends AbstractHttpMe
 	public void setProcessExternalEntities(boolean processExternalEntities) {
 		this.processExternalEntities = processExternalEntities;
 		if (processExternalEntities) {
-			setSupportDtd(true);
+			this.supportDtd = true;
 		}
 	}
 
 	/**
-	 * Returns the configured value for whether XML external entities are allowed.
+	 * Return whether XML external entities are allowed.
 	 */
 	public boolean isProcessExternalEntities() {
 		return this.processExternalEntities;

spring-web/src/main/java/org/springframework/web/method/support/AsyncHandlerMethodReturnValueHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -38,9 +38,9 @@ public interface AsyncHandlerMethodReturnValueHandler extends HandlerMethodRetur
 
 	/**
 	 * Whether the given return value represents asynchronous computation.
-	 * @param returnValue the return value
+	 * @param returnValue the value returned from the handler method
 	 * @param returnType the return type
-	 * @return {@code true} if the return value is asynchronous
+	 * @return {@code true} if the return value type represents an async value
 	 */
 	boolean isAsyncReturnValue(@Nullable Object returnValue, MethodParameter returnType);
 

spring-web/src/main/java/org/springframework/web/server/NotAcceptableStatusException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -43,10 +43,10 @@ public class NotAcceptableStatusException extends ResponseStatusException {
 	}
 
 	/**
-	 * Constructor for when requested Content-Type is not supported.
+	 * Constructor for when the requested Content-Type is not supported.
 	 */
 	public NotAcceptableStatusException(List<MediaType> supportedMediaTypes) {
-		super(HttpStatus.NOT_ACCEPTABLE, "Could not find acceptable representation", null);
+		super(HttpStatus.NOT_ACCEPTABLE, "Could not find acceptable representation");
 		this.supportedMediaTypes = Collections.unmodifiableList(supportedMediaTypes);
 	}
 

spring-webflux/src/main/java/org/springframework/web/reactive/result/HandlerResultHandlerSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -96,7 +96,7 @@ public abstract class HandlerResultHandlerSupport implements Ordered {
 
 	/**
 	 * Get a {@code ReactiveAdapter} for the top-level return value type.
-	 * @return the matching adapter or {@code null}
+	 * @return the matching adapter, or {@code null} if none
 	 */
 	@Nullable
 	protected ReactiveAdapter getAdapter(HandlerResult result) {
@@ -105,15 +105,14 @@ public abstract class HandlerResultHandlerSupport implements Ordered {
 	}
 
 	/**
-	 * Select the best media type for the current request through a content
-	 * negotiation algorithm.
+	 * Select the best media type for the current request through a content negotiation algorithm.
 	 * @param exchange the current request
 	 * @param producibleTypesSupplier the media types that can be produced for the current request
-	 * @return the selected media type or {@code null}
+	 * @return the selected media type, or {@code null} if none
 	 */
 	@Nullable
-	protected MediaType selectMediaType(ServerWebExchange exchange,
-			Supplier<List<MediaType>> producibleTypesSupplier) {
+	protected MediaType selectMediaType(
+			ServerWebExchange exchange, Supplier<List<MediaType>> producibleTypesSupplier) {
 
 		MediaType contentType = exchange.getResponse().getHeaders().getContentType();
 		if (contentType != null && contentType.isConcrete()) {
@@ -151,9 +150,8 @@ public abstract class HandlerResultHandlerSupport implements Ordered {
 		return getContentTypeResolver().resolveMediaTypes(exchange);
 	}
 
-	@SuppressWarnings("unchecked")
-	private List<MediaType> getProducibleTypes(ServerWebExchange exchange,
-			Supplier<List<MediaType>> producibleTypesSupplier) {
+	private List<MediaType> getProducibleTypes(
+			ServerWebExchange exchange, Supplier<List<MediaType>> producibleTypesSupplier) {
 
 		Set<MediaType> mediaTypes = exchange.getAttribute(HandlerMapping.PRODUCIBLE_MEDIA_TYPES_ATTRIBUTE);
 		return (mediaTypes != null ? new ArrayList<>(mediaTypes) : producibleTypesSupplier.get());

spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractMessageWriterResultHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -29,8 +29,6 @@ import org.springframework.core.ReactiveAdapterRegistry;
 import org.springframework.core.ResolvableType;
 import org.springframework.http.MediaType;
 import org.springframework.http.codec.HttpMessageWriter;
-import org.springframework.http.server.reactive.ServerHttpRequest;
-import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.web.reactive.accept.RequestedContentTypeResolver;
@@ -110,7 +108,7 @@ public abstract class AbstractMessageWriterResultHandler extends HandlerResultHa
 	 * @return indicates completion or error
 	 * @since 5.0.2
 	 */
-	@SuppressWarnings({ "unchecked", "rawtypes" })
+	@SuppressWarnings({"unchecked", "rawtypes"})
 	protected Mono<Void> writeBody(@Nullable Object body, MethodParameter bodyParameter,
 			@Nullable MethodParameter actualParam, ServerWebExchange exchange) {
 
@@ -128,32 +126,30 @@ public abstract class AbstractMessageWriterResultHandler extends HandlerResultHa
 		}
 		else {
 			publisher = Mono.justOrEmpty(body);
-			elementType = ((bodyClass == null || bodyClass.equals(Object.class)) && body != null ?
+			elementType = ((bodyClass == null || bodyClass == Object.class) && body != null ?
 					ResolvableType.forInstance(body) : bodyType);
 		}
 
-		if (void.class == elementType.getRawClass() || Void.class == elementType.getRawClass()) {
+		if (elementType.getRawClass() == void.class || elementType.getRawClass() == Void.class) {
 			return Mono.from((Publisher<Void>) publisher);
 		}
 
-		ServerHttpRequest request = exchange.getRequest();
-		ServerHttpResponse response = exchange.getResponse();
 		MediaType bestMediaType = selectMediaType(exchange, () -> getMediaTypesFor(elementType));
 		if (bestMediaType != null) {
 			for (HttpMessageWriter<?> writer : getMessageWriters()) {
 				if (writer.canWrite(elementType, bestMediaType)) {
 					return writer.write((Publisher) publisher, actualType, elementType,
-							bestMediaType, request, response, Collections.emptyMap());
+							bestMediaType, exchange.getRequest(), exchange.getResponse(),
+							Collections.emptyMap());
 				}
 			}
 		}
-		else {
-			if (getMediaTypesFor(elementType).isEmpty()) {
-				return Mono.error(new IllegalStateException("No writer for : " + elementType));
-			}
-		}
 
-		return Mono.error(new NotAcceptableStatusException(getMediaTypesFor(elementType)));
+		List<MediaType> mediaTypes = getMediaTypesFor(elementType);
+		if (bestMediaType == null && mediaTypes.isEmpty()) {
+			return Mono.error(new IllegalStateException("No HttpMessageWriter for " + elementType));
+		}
+		return Mono.error(new NotAcceptableStatusException(mediaTypes));
 	}
 
 	private ResolvableType getElementType(ReactiveAdapter adapter, ResolvableType genericType) {

spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/ControllerMethodResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -54,8 +54,9 @@ import org.springframework.web.reactive.result.method.SyncInvocableHandlerMethod
 /**
  * Package-private class to assist {@link RequestMappingHandlerAdapter} with
  * resolving, initializing, and caching annotated methods declared in
- * {@code @Controller} and {@code @ControllerAdvice} components. Assists with
- * the following annotations:
+ * {@code @Controller} and {@code @ControllerAdvice} components.
+ *
+ * <p>Assists with the following annotations:
  * <ul>
  * <li>{@code @InitBinder}
  * <li>{@code @ModelAttribute}
@@ -112,56 +113,56 @@ class ControllerMethodResolver {
 	private final Map<Class<?>, SessionAttributesHandler> sessionAttributesHandlerCache = new ConcurrentHashMap<>(64);
 
 
-	ControllerMethodResolver(ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry reactiveRegistry,
+	ControllerMethodResolver(ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry adapterRegistry,
 			ConfigurableApplicationContext context, List<HttpMessageReader<?>> readers) {
 
 		Assert.notNull(customResolvers, "ArgumentResolverConfigurer is required");
-		Assert.notNull(readers, "'messageReaders' is required");
-		Assert.notNull(reactiveRegistry, "ReactiveAdapterRegistry is required");
+		Assert.notNull(adapterRegistry, "ReactiveAdapterRegistry is required");
 		Assert.notNull(context, "ApplicationContext is required");
+		Assert.notNull(readers, "HttpMessageReader List is required");
 
-		this.initBinderResolvers = initBinderResolvers(customResolvers, reactiveRegistry, context);
-		this.modelAttributeResolvers = modelMethodResolvers(customResolvers, reactiveRegistry, context);
-		this.requestMappingResolvers = requestMappingResolvers(customResolvers, reactiveRegistry, context, readers);
-		this.exceptionHandlerResolvers = exceptionHandlerResolvers(customResolvers, reactiveRegistry, context);
-		this.reactiveAdapterRegistry = reactiveRegistry;
+		this.initBinderResolvers = initBinderResolvers(customResolvers, adapterRegistry, context);
+		this.modelAttributeResolvers = modelMethodResolvers(customResolvers, adapterRegistry, context);
+		this.requestMappingResolvers = requestMappingResolvers(customResolvers, adapterRegistry, context, readers);
+		this.exceptionHandlerResolvers = exceptionHandlerResolvers(customResolvers, adapterRegistry, context);
+		this.reactiveAdapterRegistry = adapterRegistry;
 
 		initControllerAdviceCaches(context);
 	}
 
 	private List<SyncHandlerMethodArgumentResolver> initBinderResolvers(
-			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry reactiveRegistry,
+			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry adapterRegistry,
 			ConfigurableApplicationContext context) {
 
-		return initResolvers(customResolvers, reactiveRegistry, context, false, Collections.emptyList()).stream()
+		return initResolvers(customResolvers, adapterRegistry, context, false, Collections.emptyList()).stream()
 				.filter(resolver -> resolver instanceof SyncHandlerMethodArgumentResolver)
 				.map(resolver -> (SyncHandlerMethodArgumentResolver) resolver)
 				.collect(Collectors.toList());
 	}
 
 	private static List<HandlerMethodArgumentResolver> modelMethodResolvers(
-			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry reactiveRegistry,
+			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry adapterRegistry,
 			ConfigurableApplicationContext context) {
 
-		return initResolvers(customResolvers, reactiveRegistry, context, true, Collections.emptyList());
+		return initResolvers(customResolvers, adapterRegistry, context, true, Collections.emptyList());
 	}
 
 	private static List<HandlerMethodArgumentResolver> requestMappingResolvers(
-			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry reactiveRegistry,
+			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry adapterRegistry,
 			ConfigurableApplicationContext context, List<HttpMessageReader<?>> readers) {
 
-		return initResolvers(customResolvers, reactiveRegistry, context, true, readers);
+		return initResolvers(customResolvers, adapterRegistry, context, true, readers);
 	}
 
 	private static List<HandlerMethodArgumentResolver> exceptionHandlerResolvers(
-			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry reactiveRegistry,
+			ArgumentResolverConfigurer customResolvers, ReactiveAdapterRegistry adapterRegistry,
 			ConfigurableApplicationContext context) {
 
-		return initResolvers(customResolvers, reactiveRegistry, context, false, Collections.emptyList());
+		return initResolvers(customResolvers, adapterRegistry, context, false, Collections.emptyList());
 	}
 
 	private static List<HandlerMethodArgumentResolver> initResolvers(ArgumentResolverConfigurer customResolvers,
-			ReactiveAdapterRegistry reactiveRegistry, ConfigurableApplicationContext context,
+			ReactiveAdapterRegistry adapterRegistry, ConfigurableApplicationContext context,
 			boolean supportDataBinding, List<HttpMessageReader<?>> readers) {
 
 		ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
@@ -169,48 +170,48 @@ class ControllerMethodResolver {
 
 		// Annotation-based...
 		List<HandlerMethodArgumentResolver> result = new ArrayList<>();
-		result.add(new RequestParamMethodArgumentResolver(beanFactory, reactiveRegistry, false));
-		result.add(new RequestParamMapMethodArgumentResolver(reactiveRegistry));
-		result.add(new PathVariableMethodArgumentResolver(beanFactory, reactiveRegistry));
-		result.add(new PathVariableMapMethodArgumentResolver(reactiveRegistry));
-		result.add(new MatrixVariableMethodArgumentResolver(beanFactory, reactiveRegistry));
-		result.add(new MatrixVariableMapMethodArgumentResolver(reactiveRegistry));
+		result.add(new RequestParamMethodArgumentResolver(beanFactory, adapterRegistry, false));
+		result.add(new RequestParamMapMethodArgumentResolver(adapterRegistry));
+		result.add(new PathVariableMethodArgumentResolver(beanFactory, adapterRegistry));
+		result.add(new PathVariableMapMethodArgumentResolver(adapterRegistry));
+		result.add(new MatrixVariableMethodArgumentResolver(beanFactory, adapterRegistry));
+		result.add(new MatrixVariableMapMethodArgumentResolver(adapterRegistry));
 		if (!readers.isEmpty()) {
-			result.add(new RequestBodyArgumentResolver(readers, reactiveRegistry));
-			result.add(new RequestPartMethodArgumentResolver(readers, reactiveRegistry));
+			result.add(new RequestBodyArgumentResolver(readers, adapterRegistry));
+			result.add(new RequestPartMethodArgumentResolver(readers, adapterRegistry));
 		}
 		if (supportDataBinding) {
-			result.add(new ModelAttributeMethodArgumentResolver(reactiveRegistry, false));
+			result.add(new ModelAttributeMethodArgumentResolver(adapterRegistry, false));
 		}
-		result.add(new RequestHeaderMethodArgumentResolver(beanFactory, reactiveRegistry));
-		result.add(new RequestHeaderMapMethodArgumentResolver(reactiveRegistry));
-		result.add(new CookieValueMethodArgumentResolver(beanFactory, reactiveRegistry));
-		result.add(new ExpressionValueMethodArgumentResolver(beanFactory, reactiveRegistry));
-		result.add(new SessionAttributeMethodArgumentResolver(beanFactory, reactiveRegistry));
-		result.add(new RequestAttributeMethodArgumentResolver(beanFactory, reactiveRegistry));
+		result.add(new RequestHeaderMethodArgumentResolver(beanFactory, adapterRegistry));
+		result.add(new RequestHeaderMapMethodArgumentResolver(adapterRegistry));
+		result.add(new CookieValueMethodArgumentResolver(beanFactory, adapterRegistry));
+		result.add(new ExpressionValueMethodArgumentResolver(beanFactory, adapterRegistry));
+		result.add(new SessionAttributeMethodArgumentResolver(beanFactory, adapterRegistry));
+		result.add(new RequestAttributeMethodArgumentResolver(beanFactory, adapterRegistry));
 
 		// Type-based...
 		if (!readers.isEmpty()) {
-			result.add(new HttpEntityArgumentResolver(readers, reactiveRegistry));
+			result.add(new HttpEntityArgumentResolver(readers, adapterRegistry));
 		}
-		result.add(new ModelArgumentResolver(reactiveRegistry));
+		result.add(new ModelArgumentResolver(adapterRegistry));
 		if (supportDataBinding) {
-			result.add(new ErrorsMethodArgumentResolver(reactiveRegistry));
+			result.add(new ErrorsMethodArgumentResolver(adapterRegistry));
 		}
-		result.add(new ServerWebExchangeArgumentResolver(reactiveRegistry));
-		result.add(new PrincipalArgumentResolver(reactiveRegistry));
+		result.add(new ServerWebExchangeArgumentResolver(adapterRegistry));
+		result.add(new PrincipalArgumentResolver(adapterRegistry));
 		if (requestMappingMethod) {
 			result.add(new SessionStatusMethodArgumentResolver());
 		}
-		result.add(new WebSessionArgumentResolver(reactiveRegistry));
+		result.add(new WebSessionArgumentResolver(adapterRegistry));
 
 		// Custom...
 		result.addAll(customResolvers.getCustomResolvers());
 
 		// Catch-all...
-		result.add(new RequestParamMethodArgumentResolver(beanFactory, reactiveRegistry, true));
+		result.add(new RequestParamMethodArgumentResolver(beanFactory, adapterRegistry, true));
 		if (supportDataBinding) {
-			result.add(new ModelAttributeMethodArgumentResolver(reactiveRegistry, true));
+			result.add(new ModelAttributeMethodArgumentResolver(adapterRegistry, true));
 		}
 
 		return result;
@@ -336,7 +337,6 @@ class ControllerMethodResolver {
 	 */
 	@Nullable
 	public InvocableHandlerMethod getExceptionHandlerMethod(Throwable ex, HandlerMethod handlerMethod) {
-
 		Class<?> handlerType = handlerMethod.getBeanType();
 
 		// Controller-local first...

spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/ModelAttributeMethodArgumentResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -135,8 +135,7 @@ public class ModelAttributeMethodArgumentResolver extends HandlerMethodArgumentR
 						BindingResult errors = binder.getBindingResult();
 						if (adapter != null) {
 							return adapter.fromPublisher(errors.hasErrors() ?
-									Mono.error(new WebExchangeBindException(parameter, errors)) :
-									valueMono);
+									Mono.error(new WebExchangeBindException(parameter, errors)) : valueMono);
 						}
 						else {
 							if (errors.hasErrors() && !hasErrorsArgument(parameter)) {
@@ -163,10 +162,10 @@ public class ModelAttributeMethodArgumentResolver extends HandlerMethodArgumentR
 			return createAttribute(attributeName, attributeClass, context, exchange);
 		}
 
-		ReactiveAdapter adapterFrom = getAdapterRegistry().getAdapter(null, attribute);
-		if (adapterFrom != null) {
-			Assert.isTrue(!adapterFrom.isMultiValue(), "Data binding only supports single-value async types");
-			return Mono.from(adapterFrom.toPublisher(attribute));
+		ReactiveAdapter adapter = getAdapterRegistry().getAdapter(null, attribute);
+		if (adapter != null) {
+			Assert.isTrue(!adapter.isMultiValue(), "Data binding only supports single-value async types");
+			return Mono.from(adapter.toPublisher(attribute));
 		}
 		else {
 			return Mono.justOrEmpty(attribute);

spring-webflux/src/main/java/org/springframework/web/reactive/result/view/AbstractView.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -56,7 +56,7 @@ public abstract class AbstractView implements View, ApplicationContextAware {
 	private static final Object NO_VALUE = new Object();
 
 
-	private final ReactiveAdapterRegistry reactiveAdapterRegistry;
+	private final ReactiveAdapterRegistry adapterRegistry;
 
 	private final List<MediaType> mediaTypes = new ArrayList<>(4);
 
@@ -74,7 +74,7 @@ public abstract class AbstractView implements View, ApplicationContextAware {
 	}
 
 	public AbstractView(ReactiveAdapterRegistry reactiveAdapterRegistry) {
-		this.reactiveAdapterRegistry = reactiveAdapterRegistry;
+		this.adapterRegistry = reactiveAdapterRegistry;
 		this.mediaTypes.add(ViewResolverSupport.DEFAULT_CONTENT_TYPE);
 	}
 
@@ -217,7 +217,7 @@ public abstract class AbstractView implements View, ApplicationContextAware {
 			if (value == null) {
 				continue;
 			}
-			ReactiveAdapter adapter = this.reactiveAdapterRegistry.getAdapter(null, value);
+			ReactiveAdapter adapter = this.adapterRegistry.getAdapter(null, value);
 			if (adapter != null) {
 				names.add(entry.getKey());
 				if (adapter.isMultiValue()) {

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ReactiveTypeHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -76,14 +76,14 @@ class ReactiveTypeHandler {
 
 	private static Log logger = LogFactory.getLog(ReactiveTypeHandler.class);
 
-	private final ReactiveAdapterRegistry reactiveRegistry;
+	private final ReactiveAdapterRegistry adapterRegistry;
 
 	private final TaskExecutor taskExecutor;
 
-	private Boolean taskExecutorWarning;
-
 	private final ContentNegotiationManager contentNegotiationManager;
 
+	private boolean taskExecutorWarning;
+
 
 	public ReactiveTypeHandler() {
 		this(ReactiveAdapterRegistry.getSharedInstance(), new SyncTaskExecutor(), new ContentNegotiationManager());
@@ -93,10 +93,12 @@ class ReactiveTypeHandler {
 		Assert.notNull(registry, "ReactiveAdapterRegistry is required");
 		Assert.notNull(executor, "TaskExecutor is required");
 		Assert.notNull(manager, "ContentNegotiationManager is required");
-		this.reactiveRegistry = registry;
+		this.adapterRegistry = registry;
 		this.taskExecutor = executor;
-		this.taskExecutorWarning = executor instanceof SimpleAsyncTaskExecutor || executor instanceof SyncTaskExecutor;
 		this.contentNegotiationManager = manager;
+
+		this.taskExecutorWarning =
+				(executor instanceof SimpleAsyncTaskExecutor || executor instanceof SyncTaskExecutor);
 	}
 
 
@@ -104,7 +106,7 @@ class ReactiveTypeHandler {
 	 * Whether the type can be adapted to a Reactive Streams {@link Publisher}.
 	 */
 	public boolean isReactiveType(Class<?> type) {
-		return (this.reactiveRegistry.hasAdapters() && this.reactiveRegistry.getAdapter(type) != null);
+		return (this.adapterRegistry.hasAdapters() && this.adapterRegistry.getAdapter(type) != null);
 	}
 
 
@@ -119,7 +121,7 @@ class ReactiveTypeHandler {
 			ModelAndViewContainer mav, NativeWebRequest request) throws Exception {
 
 		Assert.notNull(returnValue, "Expected return value");
-		ReactiveAdapter adapter = this.reactiveRegistry.getAdapter(returnValue.getClass());
+		ReactiveAdapter adapter = this.adapterRegistry.getAdapter(returnValue.getClass());
 		Assert.state(adapter != null, () -> "Unexpected return value: " + returnValue);
 
 		ResolvableType elementType = ResolvableType.forMethodParameter(returnType).getGeneric();
@@ -317,7 +319,7 @@ class ReactiveTypeHandler {
 					return;
 				}
 			}
-			
+
 			if (isTerminated) {
 				this.done = true;
 				Throwable ex = this.error;

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ResponseBodyEmitterReturnValueHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -83,17 +83,17 @@ public class ResponseBodyEmitterReturnValueHandler implements HandlerMethodRetur
 	/**
 	 * Complete constructor with pluggable "reactive" type support.
 	 * @param messageConverters converters to write emitted objects with
-	 * @param reactiveRegistry for reactive return value type support
+	 * @param registry for reactive return value type support
 	 * @param executor for blocking I/O writes of items emitted from reactive types
 	 * @param manager for detecting streaming media types
 	 * @since 5.0
 	 */
 	public ResponseBodyEmitterReturnValueHandler(List<HttpMessageConverter<?>> messageConverters,
-			ReactiveAdapterRegistry reactiveRegistry, TaskExecutor executor, ContentNegotiationManager manager) {
+			ReactiveAdapterRegistry registry, TaskExecutor executor, ContentNegotiationManager manager) {
 
 		Assert.notEmpty(messageConverters, "HttpMessageConverter List must not be empty");
 		this.messageConverters = messageConverters;
-		this.reactiveHandler = new ReactiveTypeHandler(reactiveRegistry, executor, manager);
+		this.reactiveHandler = new ReactiveTypeHandler(registry, executor, manager);
 	}
 
 

spring-webmvc/src/main/java/org/springframework/web/servlet/support/RequestContextUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -19,7 +19,6 @@ package org.springframework.web.servlet.support;
 import java.util.Locale;
 import java.util.Map;
 import java.util.TimeZone;
-
 import javax.servlet.ServletContext;
 import javax.servlet.ServletRequest;
 import javax.servlet.http.HttpServletRequest;

spring-webmvc/src/main/java/org/springframework/web/servlet/view/RedirectView.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -346,7 +346,7 @@ public class RedirectView extends AbstractUrlBasedView implements SmartView {
 			targetUrl = replaceUriTemplateVariables(targetUrl.toString(), model, variables, enc);
 		}
 		if (isPropagateQueryProperties()) {
-		 	appendCurrentQueryParams(targetUrl, request);
+			appendCurrentQueryParams(targetUrl, request);
 		}
 		if (this.exposeModelAttributes) {
 			appendQueryProperties(targetUrl, model, enc);
@@ -368,7 +368,7 @@ public class RedirectView extends AbstractUrlBasedView implements SmartView {
 	 * attributes or URI variables from the current request. Model attributes
 	 * referenced in the URL are removed from the model.
 	 * @param targetUrl the redirect URL
-	 * @param model Map that contains model attributes
+	 * @param model a Map that contains model attributes
 	 * @param currentUriVariables current request URI variables to use
 	 * @param encodingScheme the encoding scheme to use
 	 * @throws UnsupportedEncodingException if string encoding failed
@@ -435,7 +435,7 @@ public class RedirectView extends AbstractUrlBasedView implements SmartView {
 	 * Append query properties to the redirect URL.
 	 * Stringifies, URL-encodes and formats model attributes as query properties.
 	 * @param targetUrl the StringBuilder to append the properties to
-	 * @param model Map that contains model attributes
+	 * @param model a Map that contains model attributes
 	 * @param encodingScheme the encoding scheme to use
 	 * @throws UnsupportedEncodingException if string encoding failed
 	 * @see #queryProperties
@@ -554,8 +554,9 @@ public class RedirectView extends AbstractUrlBasedView implements SmartView {
 
 	/**
 	 * Determine whether the given model element value is eligible for exposure.
-	 * <p>The default implementation considers primitives, Strings, Numbers, Dates,
-	 * URIs, URLs and Locale objects as eligible. This can be overridden in subclasses.
+	 * <p>The default implementation considers primitives, strings, numbers, dates,
+	 * URIs, URLs etc as eligible, according to {@link BeanUtils#isSimpleValueType}.
+	 * This can be overridden in subclasses.
 	 * @param value the model element value
 	 * @return whether the element value is eligible
 	 * @see BeanUtils#isSimpleValueType
@@ -572,7 +573,6 @@ public class RedirectView extends AbstractUrlBasedView implements SmartView {
 	 * @return the encoded output String
 	 * @throws UnsupportedEncodingException if thrown by the JDK URLEncoder
 	 * @see java.net.URLEncoder#encode(String, String)
-	 * @see java.net.URLEncoder#encode(String)
 	 */
 	protected String urlEncode(String input, String encodingScheme) throws UnsupportedEncodingException {
 		return URLEncoder.encode(input, encodingScheme);
@@ -602,7 +602,7 @@ public class RedirectView extends AbstractUrlBasedView implements SmartView {
 	}
 
 	/**
-	 * Send a redirect back to the HTTP client
+	 * Send a redirect back to the HTTP client.
 	 * @param request current HTTP request (allows for reacting to request method)
 	 * @param response current HTTP response (for sending response headers)
 	 * @param targetUrl the target URL to redirect to

spring-webmvc/src/test/java/org/springframework/web/servlet/SimpleWebApplicationContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -47,10 +47,6 @@ public class SimpleWebApplicationContext extends StaticWebApplicationContext {
 
 	@Override
 	public void refresh() throws BeansException {
-		MutablePropertyValues pvs = new MutablePropertyValues();
-		pvs.add("commandClass", "org.springframework.tests.sample.beans.TestBean");
-		pvs.add("formView", "form");
-
 		registerSingleton("/locale.do", LocaleChecker.class);
 
 		addMessage("test", Locale.ENGLISH, "test message");
@@ -63,7 +59,7 @@ public class SimpleWebApplicationContext extends StaticWebApplicationContext {
 		registerSingleton("handlerMapping", BeanNameUrlHandlerMapping.class);
 		registerSingleton("viewResolver", InternalResourceViewResolver.class);
 
-		pvs = new MutablePropertyValues();
+		MutablePropertyValues pvs = new MutablePropertyValues();
 		pvs.add("location", "org/springframework/web/context/WEB-INF/sessionContext.xml");
 		registerSingleton("viewResolver2", XmlViewResolver.class, pvs);
 
@@ -76,6 +72,7 @@ public class SimpleWebApplicationContext extends StaticWebApplicationContext {
 		@Override
 		public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
 				throws ServletException, IOException {
+
 			if (!(RequestContextUtils.findWebApplicationContext(request) instanceof SimpleWebApplicationContext)) {
 				throw new ServletException("Incorrect WebApplicationContext");
 			}