Deprecate Castor support

Issue: SPR-16219

spring-oxm/src/main/java/org/springframework/oxm/castor/CastorMappingException.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -23,7 +23,9 @@ import org.springframework.oxm.XmlMappingException;
  *
  * @author Juergen Hoeller
  * @since 3.0
+ * @deprecated as of Spring Framework 4.3.13, due to the lack of activity on the Castor project
  */
+@Deprecated
 @SuppressWarnings("serial")
 public class CastorMappingException extends XmlMappingException {
 

spring-oxm/src/main/java/org/springframework/oxm/castor/CastorMarshaller.java

@@ -74,8 +74,8 @@ import org.springframework.util.xml.StaxUtils;
  * can only be used to unmarshal XML that represents that specific class. If you want to unmarshal
  * multiple classes, you have to provide a mapping file using {@code setMappingLocations}.
  *
- * <p>Due to limitations of Castor's API, it is required to set the encoding used for
- * writing to output streams. It defaults to {@code UTF-8}.
+ * <p>Due to limitations of Castor's API, it is required to set the encoding used for writing
+ * to output streams. It defaults to {@code UTF-8}.
  *
  * @author Arjen Poutsma
  * @author Jakub Narloch
@@ -86,7 +86,9 @@ import org.springframework.util.xml.StaxUtils;
  * @see #setTargetPackages(String[])
  * @see #setMappingLocation(Resource)
  * @see #setMappingLocations(Resource[])
+ * @deprecated as of Spring Framework 4.3.13, due to the lack of activity on the Castor project
  */
+@Deprecated
 public class CastorMarshaller extends AbstractMarshaller implements InitializingBean, BeanClassLoaderAware {
 
 	/**

spring-oxm/src/main/java/org/springframework/oxm/config/CastorMarshallerBeanDefinitionParser.java

 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -25,8 +25,10 @@ import org.springframework.beans.factory.xml.AbstractSimpleBeanDefinitionParser;
  *
  * @author Jakub Narloch
  * @since 3.1
+ * @deprecated as of Spring Framework 4.3.13, due to the lack of activity on the Castor project
  */
-public class CastorMarshallerBeanDefinitionParser extends AbstractSimpleBeanDefinitionParser {
+@Deprecated
+class CastorMarshallerBeanDefinitionParser extends AbstractSimpleBeanDefinitionParser {
 
 	@Override
 	protected String getBeanClassName(Element element) {

spring-oxm/src/main/java/org/springframework/oxm/config/OxmNamespaceHandler.java

 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -27,6 +27,7 @@ import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
  */
 public class OxmNamespaceHandler extends NamespaceHandlerSupport {
 
+	@SuppressWarnings("deprecation")
 	@Override
 	public void init() {
 		registerBeanDefinitionParser("jaxb2-marshaller", new Jaxb2MarshallerBeanDefinitionParser());

spring-oxm/src/main/resources/org/springframework/oxm/config/spring-oxm.xsd

@@ -85,7 +85,7 @@
 			<xsd:annotation>
 				<xsd:documentation
 					source="java:org.springframework.oxm.castor.CastorMarshaller">
-					Defines a Castor Marshaller.
+					Defines a Castor Marshaller. Deprecated as of Spring Framework 4.3.13!
 				</xsd:documentation>
 				<xsd:appinfo>
 					<tool:annotation>