Deprecate the batch XML namespace

Resolves #4843

Author: fmbenhassine

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/xml/CoreNamespaceHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2013 the original author or authors.
+ * Copyright 2006-2025 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.
@@ -15,20 +15,28 @@
  */
 package org.springframework.batch.core.configuration.xml;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 import org.springframework.beans.factory.xml.NamespaceHandler;
 import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
 
 /**
  * @author Dave Syer
+ * @author Mahmoud Ben Hassine
  *
  */
 public class CoreNamespaceHandler extends NamespaceHandlerSupport {
 
+	private static final Log LOGGER = LogFactory.getLog(CoreNamespaceHandler.class);
+
 	/**
 	 * @see NamespaceHandler#init()
 	 */
 	@Override
 	public void init() {
+		LOGGER.info(
+				"DEPRECATION NOTE: The batch XML namespace is deprecated as of Spring Batch 6.0 and will be removed in version 7.0.");
 		this.registerBeanDefinitionParser("job", new JobParser());
 		this.registerBeanDefinitionParser("flow", new TopLevelFlowParser());
 		this.registerBeanDefinitionParser("step", new TopLevelStepParser());

spring-batch-core/src/main/resources/org/springframework/batch/core/configuration/xml/spring-batch.xsd

@@ -14,6 +14,7 @@
 	<xsd:annotation>
 		<xsd:documentation><![CDATA[
 	Defines the configuration elements for Spring Batch Core.
+	NOTE: The batch XML namespace is deprecated as of Spring Batch 6.0 and will be removed in version 7.0.
 		]]></xsd:documentation>
 	</xsd:annotation>
 

spring-batch-integration/src/main/java/org/springframework/batch/integration/config/xml/BatchIntegrationNamespaceHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -15,6 +15,9 @@
  */
 package org.springframework.batch.integration.config.xml;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 import org.springframework.integration.config.xml.AbstractIntegrationNamespaceHandler;
 
 /**
@@ -27,8 +30,12 @@
  */
 public class BatchIntegrationNamespaceHandler extends AbstractIntegrationNamespaceHandler {
 
+	private static final Log LOGGER = LogFactory.getLog(BatchIntegrationNamespaceHandler.class);
+
 	@Override
 	public void init() {
+		LOGGER.info(
+				"DEPRECATION NOTE: The batch XML namespace is deprecated as of Spring Batch 6.0 and will be removed in version 7.0.");
 		this.registerBeanDefinitionParser("job-launching-gateway", new JobLaunchingGatewayParser());
 		RemoteChunkingManagerParser remoteChunkingManagerParser = new RemoteChunkingManagerParser();
 		this.registerBeanDefinitionParser("remote-chunking-manager", remoteChunkingManagerParser);

spring-batch-integration/src/main/resources/org/springframework/batch/integration/config/xml/spring-batch-integration.xsd

@@ -13,8 +13,8 @@
 
 	<xsd:annotation>
 		<xsd:documentation><![CDATA[
-			Defines the configuration elements for the Spring Batch Integration
-			Support.
+			Defines the configuration elements for the Spring Batch Integration Support.
+			NOTE: The batch XML namespace is deprecated as of Spring Batch 6.0 and will be removed in version 7.0.
 		]]></xsd:documentation>
 	</xsd:annotation>