Consistent non-public AsyncRequestInterceptor classes

Issue: SPR-11694

spring-orm-hibernate4/src/main/java/org/springframework/orm/hibernate4/support/AsyncRequestInterceptor.java

 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -16,7 +16,6 @@
 
 package org.springframework.orm.hibernate4.support;
 
-
 import java.util.concurrent.Callable;
 
 import org.apache.commons.logging.Log;
@@ -42,8 +41,7 @@ import org.springframework.web.context.request.async.DeferredResultProcessingInt
  * @author Rossen Stoyanchev
  * @since 3.2.5
  */
-public class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter
-		implements DeferredResultProcessingInterceptor {
+class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter implements DeferredResultProcessingInterceptor {
 
 	private static final Log logger = LogFactory.getLog(AsyncRequestInterceptor.class);
 
@@ -78,7 +76,7 @@ public class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapte
 	@Override
 	public <T> Object handleTimeout(NativeWebRequest request, Callable<T> task) {
 		this.timeoutInProgress = true;
-		return RESULT_NONE; // give other interceptors a chance to handle the timeout
+		return RESULT_NONE;  // give other interceptors a chance to handle the timeout
 	}
 
 	@Override
@@ -89,26 +87,29 @@ public class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapte
 	private void closeAfterTimeout() {
 		if (this.timeoutInProgress) {
 			logger.debug("Closing Hibernate Session after async request timeout");
-			SessionFactoryUtils.closeSession(sessionHolder.getSession());
+			SessionFactoryUtils.closeSession(this.sessionHolder.getSession());
 		}
 	}
 
 
 	// Implementation of DeferredResultProcessingInterceptor methods
 
+	@Override
 	public <T> void beforeConcurrentHandling(NativeWebRequest request, DeferredResult<T> deferredResult) {
 	}
 
+	@Override
 	public <T> void preProcess(NativeWebRequest request, DeferredResult<T> deferredResult) {
 	}
 
+	@Override
 	public <T> void postProcess(NativeWebRequest request, DeferredResult<T> deferredResult, Object result) {
 	}
 
 	@Override
 	public <T> boolean handleTimeout(NativeWebRequest request, DeferredResult<T> deferredResult) {
 		this.timeoutInProgress = true;
-		return true; // give other interceptors a chance to handle the timeout
+		return true;  // give other interceptors a chance to handle the timeout
 	}
 
 	@Override

spring-orm/src/main/java/org/springframework/orm/hibernate3/support/AsyncRequestInterceptor.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -41,8 +41,7 @@ import org.springframework.web.context.request.async.DeferredResultProcessingInt
  * @author Rossen Stoyanchev
  * @since 3.2.5
  */
-class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter
-		implements DeferredResultProcessingInterceptor {
+class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter implements DeferredResultProcessingInterceptor {
 
 	private static final Log logger = LogFactory.getLog(AsyncRequestInterceptor.class);
 
@@ -58,6 +57,7 @@ class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter
 		this.sessionHolder = sessionHolder;
 	}
 
+
 	@Override
 	public <T> void preProcess(NativeWebRequest request, Callable<T> task) {
 		bindSession();
@@ -76,7 +76,7 @@ class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter
 	@Override
 	public <T> Object handleTimeout(NativeWebRequest request, Callable<T> task) {
 		this.timeoutInProgress = true;
-		return RESULT_NONE; // give other interceptors a chance to handle the timeout
+		return RESULT_NONE;  // give other interceptors a chance to handle the timeout
 	}
 
 	@Override
@@ -87,20 +87,29 @@ class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter
 	private void closeAfterTimeout() {
 		if (this.timeoutInProgress) {
 			logger.debug("Closing Hibernate Session after async request timeout");
-			SessionFactoryUtils.closeSession(sessionHolder.getSession());
+			SessionFactoryUtils.closeSession(this.sessionHolder.getSession());
 		}
 	}
 
+
 	// Implementation of DeferredResultProcessingInterceptor methods
 
-	public <T> void beforeConcurrentHandling(NativeWebRequest request, DeferredResult<T> deferredResult) {}
-	public <T> void preProcess(NativeWebRequest request, DeferredResult<T> deferredResult) {}
-	public <T> void postProcess(NativeWebRequest request, DeferredResult<T> deferredResult, Object result) {}
+	@Override
+	public <T> void beforeConcurrentHandling(NativeWebRequest request, DeferredResult<T> deferredResult) {
+	}
+
+	@Override
+	public <T> void preProcess(NativeWebRequest request, DeferredResult<T> deferredResult) {
+	}
+
+	@Override
+	public <T> void postProcess(NativeWebRequest request, DeferredResult<T> deferredResult, Object result) {
+	}
 
 	@Override
 	public <T> boolean handleTimeout(NativeWebRequest request, DeferredResult<T> deferredResult) {
 		this.timeoutInProgress = true;
-		return true; // give other interceptors a chance to handle the timeout
+		return true;  // give other interceptors a chance to handle the timeout
 	}
 
 	@Override

spring-orm/src/main/java/org/springframework/orm/jpa/support/AsyncRequestInterceptor.java

 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -16,7 +16,6 @@
 
 package org.springframework.orm.jpa.support;
 
-
 import java.util.concurrent.Callable;
 import javax.persistence.EntityManagerFactory;
 
@@ -42,8 +41,7 @@ import org.springframework.web.context.request.async.DeferredResultProcessingInt
  * @author Rossen Stoyanchev
  * @since 3.2.5
  */
-public class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter
-		implements DeferredResultProcessingInterceptor {
+class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapter implements DeferredResultProcessingInterceptor {
 
 	private static final Log logger = LogFactory.getLog(AsyncRequestInterceptor.class);
 
@@ -78,7 +76,7 @@ public class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapte
 	@Override
 	public <T> Object handleTimeout(NativeWebRequest request, Callable<T> task) {
 		this.timeoutInProgress = true;
-		return RESULT_NONE; // give other interceptors a chance to handle the timeout
+		return RESULT_NONE;  // give other interceptors a chance to handle the timeout
 	}
 
 	@Override
@@ -96,19 +94,22 @@ public class AsyncRequestInterceptor extends CallableProcessingInterceptorAdapte
 
 	// Implementation of DeferredResultProcessingInterceptor methods
 
+	@Override
 	public <T> void beforeConcurrentHandling(NativeWebRequest request, DeferredResult<T> deferredResult) {
 	}
 
+	@Override
 	public <T> void preProcess(NativeWebRequest request, DeferredResult<T> deferredResult) {
 	}
 
+	@Override
 	public <T> void postProcess(NativeWebRequest request, DeferredResult<T> deferredResult, Object result) {
 	}
 
 	@Override
 	public <T> boolean handleTimeout(NativeWebRequest request, DeferredResult<T> deferredResult) {
 		this.timeoutInProgress = true;
-		return true; // give other interceptors a chance to handle the timeout
+		return true;  // give other interceptors a chance to handle the timeout
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/web/context/request/async/DeferredResultProcessingInterceptor.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.web.context.request.async;
 
 import org.springframework.web.context.request.NativeWebRequest;
@@ -45,21 +46,18 @@ public interface DeferredResultProcessingInterceptor {
 	 * Invoked immediately before the start of concurrent handling, in the same
 	 * thread that started it. This method may be used to capture state just prior
 	 * to the start of concurrent processing with the given {@code DeferredResult}.
-	 *
 	 * @param request the current request
 	 * @param deferredResult the DeferredResult for the current request
 	 * @throws Exception in case of errors
 	 */
-	<T> void  beforeConcurrentHandling(NativeWebRequest request, DeferredResult<T> deferredResult) throws Exception;
+	<T> void beforeConcurrentHandling(NativeWebRequest request, DeferredResult<T> deferredResult) throws Exception;
 
 	/**
 	 * Invoked immediately after the start of concurrent handling, in the same
 	 * thread that started it. This method may be used to detect the start of
 	 * concurrent processing with the given {@code DeferredResult}.
-	 *
 	 * <p>The {@code DeferredResult} may have already been set, for example at
 	 * the time of its creation or by another thread.
-	 *
 	 * @param request the current request
 	 * @param deferredResult the DeferredResult for the current request
 	 * @throws Exception in case of errors
@@ -71,11 +69,9 @@ public interface DeferredResultProcessingInterceptor {
 	 * {@link DeferredResult#setResult(Object)} or
 	 * {@link DeferredResult#setErrorResult(Object)}, and is also ready to
 	 * handle the concurrent result.
-	 *
 	 * <p>This method may also be invoked after a timeout when the
 	 * {@code DeferredResult} was created with a constructor accepting a default
 	 * timeout result.
-	 *
 	 * @param request the current request
 	 * @param deferredResult the DeferredResult for the current request
 	 * @param concurrentResult the result to which the {@code DeferredResult}
@@ -88,7 +84,6 @@ public interface DeferredResultProcessingInterceptor {
 	 * the {@code DeferredResult} has been set. Implementations may invoke
 	 * {@link DeferredResult#setResult(Object) setResult} or
 	 * {@link DeferredResult#setErrorResult(Object) setErrorResult} to resume processing.
-	 *
 	 * @param request the current request
 	 * @param deferredResult the DeferredResult for the current request; if the
 	 * {@code DeferredResult} is set, then concurrent processing is resumed and
@@ -103,7 +98,6 @@ public interface DeferredResultProcessingInterceptor {
 	 * Invoked from a container thread when an async request completed for any
 	 * reason including timeout and network error. This method is useful for
 	 * detecting that a {@code DeferredResult} instance is no longer usable.
-	 *
 	 * @param request the current request
 	 * @param deferredResult the DeferredResult for the current request
 	 * @throws Exception in case of errors