Implement java.io.Flushable wherever applicable

spring-tx/src/main/java/org/springframework/transaction/TransactionStatus.java

 /*
- * Copyright 2002-2009 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -16,6 +16,8 @@
 
 package org.springframework.transaction;
 
+import java.io.Flushable;
+
 /**
  * Representation of the status of a transaction.
  *
@@ -34,7 +36,7 @@ package org.springframework.transaction;
  * @see org.springframework.transaction.support.TransactionCallback#doInTransaction
  * @see org.springframework.transaction.interceptor.TransactionInterceptor#currentTransactionStatus()
  */
-public interface TransactionStatus extends SavepointManager {
+public interface TransactionStatus extends SavepointManager, Flushable {
 
 	/**
 	 * Return whether the present transaction is new (else participating
@@ -79,6 +81,7 @@ public interface TransactionStatus extends SavepointManager {
 	 * Flush the underlying session to the datastore, if applicable:
 	 * for example, all affected Hibernate/JPA sessions.
 	 */
+	@Override
 	void flush();
 
 	/**

spring-tx/src/main/java/org/springframework/transaction/support/SmartTransactionObject.java

 /*
- * Copyright 2002-2009 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -16,6 +16,8 @@
 
 package org.springframework.transaction.support;
 
+import java.io.Flushable;
+
 /**
  * Interface to be implemented by transaction objects that are able to
  * return an internal rollback-only marker, typically from a another
@@ -29,7 +31,7 @@ package org.springframework.transaction.support;
  * @since 1.1
  * @see DefaultTransactionStatus#isRollbackOnly
  */
-public interface SmartTransactionObject {
+public interface SmartTransactionObject extends Flushable {
 
 	/**
 	 * Return whether the transaction is internally marked as rollback-only.
@@ -43,6 +45,7 @@ public interface SmartTransactionObject {
 	 * Flush the underlying sessions to the datastore, if applicable:
 	 * for example, all affected Hibernate/JPA sessions.
 	 */
+	@Override
 	void flush();
 
 }

spring-tx/src/main/java/org/springframework/transaction/support/TransactionSynchronization.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -16,6 +16,8 @@
 
 package org.springframework.transaction.support;
 
+import java.io.Flushable;
+
 /**
  * Interface for transaction synchronization callbacks.
  * Supported by AbstractPlatformTransactionManager.
@@ -34,7 +36,7 @@ package org.springframework.transaction.support;
  * @see org.springframework.jdbc.datasource.DataSourceUtils#CONNECTION_SYNCHRONIZATION_ORDER
  * @see org.springframework.orm.hibernate3.SessionFactoryUtils#SESSION_SYNCHRONIZATION_ORDER
  */
-public interface TransactionSynchronization {
+public interface TransactionSynchronization extends Flushable {
 
 	/** Completion status in case of proper commit */
 	int STATUS_COMMITTED = 0;
@@ -65,6 +67,7 @@ public interface TransactionSynchronization {
 	 * for example, a Hibernate/JPA session.
 	 * @see org.springframework.transaction.TransactionStatus#flush()
 	 */
+	@Override
 	void flush();
 
 	/**

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

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -17,6 +17,7 @@
 package org.springframework.http.server;
 
 import java.io.Closeable;
+import java.io.Flushable;
 import java.io.IOException;
 
 import org.springframework.http.HttpOutputMessage;
@@ -28,7 +29,7 @@ import org.springframework.http.HttpStatus;
  * @author Arjen Poutsma
  * @since 3.0
  */
-public interface ServerHttpResponse extends HttpOutputMessage, Closeable {
+public interface ServerHttpResponse extends HttpOutputMessage, Flushable, Closeable {
 
 	/**
 	 * Set the HTTP status code of the response.
@@ -37,10 +38,11 @@ public interface ServerHttpResponse extends HttpOutputMessage, Closeable {
 	void setStatusCode(HttpStatus status);
 
 	/**
-	 * Ensure the headers and the content of the response are written out. After the first
-	 * flush, headers can no longer be changed, only further content writing and flushing
-	 * is possible.
+	 * Ensure that the headers and the content of the response are written out.
+	 * <p>After the first flush, headers can no longer be changed.
+	 * Only further content writing and content flushing is possible.
 	 */
+	@Override
 	void flush() throws IOException;
 
 	/**