Deprecate unused APIs

Related to #4847
Resolves #4866

Author: fmbenhassine

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 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.
@@ -21,8 +21,9 @@
  * Strategy for creating a single job.
  *
  * @author Dave Syer
- *
+ * @author Mahmoud Ben Hassine
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public interface JobFactory {
 
 	/**

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

@@ -15,6 +15,8 @@
  */
 package org.springframework.batch.core.configuration;
 
+import java.util.Collection;
+
 import org.springframework.batch.core.Job;
 
 /**
@@ -25,7 +27,14 @@
  * @author Mahmoud Ben Hassine
  *
  */
-public interface JobRegistry extends ListableJobLocator {
+public interface JobRegistry extends JobLocator {
+
+	/**
+	 * Provides the currently registered job names. The return value is unmodifiable and
+	 * disconnected from the underlying registry storage.
+	 * @return a collection of String. Empty if none are registered.
+	 */
+	Collection<String> getJobNames();
 
 	/**
 	 * Registers a {@link Job} at runtime.

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 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.
@@ -21,8 +21,11 @@
  * A listable extension of {@link JobLocator}.
  *
  * @author Dave Syer
- *
+ * @author Mahmoud Ben Hassine
+ * @deprecated since 6.0, scheduled for removal in 6.2 or later. Use {@link JobRegistry}
+ * instead.
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public interface ListableJobLocator extends JobLocator {
 
 	/**

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/annotation/AutomaticJobRegistrarBeanPostProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022-2023 the original author or authors.
+ * Copyright 2022-2025 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.
@@ -30,7 +30,9 @@
  *
  * @author Mahmoud Ben Hassine
  * @since 5.0
+ * @deprecated since 6.0 with no replacement. Scheduled for removal in 6.2 or later.
  */
+@Deprecated(since = "6.0", forRemoval = true)
 class AutomaticJobRegistrarBeanPostProcessor implements BeanFactoryPostProcessor, BeanPostProcessor {
 
 	private ConfigurableListableBeanFactory beanFactory;

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/annotation/EnableBatchProcessing.java

@@ -18,6 +18,7 @@
 import org.springframework.batch.core.configuration.JobRegistry;
 import org.springframework.batch.core.configuration.support.ApplicationContextFactory;
 import org.springframework.batch.core.configuration.support.AutomaticJobRegistrar;
+import org.springframework.batch.core.configuration.support.GroupAwareJob;
 import org.springframework.batch.core.configuration.support.ScopeConfiguration;
 import org.springframework.batch.core.converter.JobParametersConverter;
 import org.springframework.batch.core.repository.JobRepository;
@@ -156,7 +157,10 @@
 	 * {@link ApplicationContextFactory}.
 	 * @return boolean indicating whether the configuration is going to be modularized
 	 * into multiple application contexts. Defaults to {@code false}.
+	 * @deprecated since 6.0 in favor of Spring's context hierarchies and
+	 * {@link GroupAwareJob}s. Scheduled for removal in 6.2 or later.
 	 */
+	@Deprecated(since = "6.0", forRemoval = true)
 	boolean modular() default false;
 
 	/**

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/support/AbstractApplicationContextFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2023 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.
@@ -47,7 +47,10 @@
  * every time it is requested. It is lazily initialized and cached. Clients should ensure
  * that it is closed when it is no longer needed. If a path is not set, the parent is
  * always returned.
+ *
+ * @deprecated since 6.0 with no replacement. Scheduled for removal in 6.2 or later.
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public abstract class AbstractApplicationContextFactory implements ApplicationContextFactory, ApplicationContextAware {
 
 	private static final Log logger = LogFactory.getLog(AbstractApplicationContextFactory.class);

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/support/ApplicationContextFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 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.
@@ -25,7 +25,10 @@
  * primarily useful when creating a new {@link ApplicationContext} for a {@link Job}.
  *
  * @author Lucas Ward
+ * @author Mahmoud Ben Hassine
+ * @deprecated since 6.0 with no replacement. Scheduled for removal in 6.2 or later.
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public interface ApplicationContextFactory {
 
 	ConfigurableApplicationContext createApplicationContext();

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/support/ApplicationContextJobFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2023 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.
@@ -26,8 +26,10 @@
  *
  * @author Dave Syer
  * @author Mahmoud Ben Hassine
+ * @deprecated since 6.0 with no replacement. Scheduled for removal in 6.2 or later.
  *
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public class ApplicationContextJobFactory implements JobFactory {
 
 	private final Job job;

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/support/AutomaticJobRegistrar.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2023 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.
@@ -42,7 +42,9 @@
  * @author Dave Syer
  * @author Mahmoud Ben Hassine
  * @since 2.1
+ * @deprecated since 6.0 with no replacement. Scheduled for removal in 6.2 or later.
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public class AutomaticJobRegistrar implements Ordered, SmartLifecycle, ApplicationContextAware, InitializingBean {
 
 	private final Collection<ApplicationContextFactory> applicationContextFactories = new ArrayList<>();

spring-batch-core/src/main/java/org/springframework/batch/core/configuration/support/ClasspathXmlApplicationContextsFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 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.
@@ -35,8 +35,9 @@
  *
  * @author Dave Syer
  * @author Mahmoud Ben Hassine
- *
+ * @deprecated since 6.0 with no replacement. Scheduled for removal in 6.2 or later.
  */
+@Deprecated(since = "6.0", forRemoval = true)
 public class ClasspathXmlApplicationContextsFactoryBean
 		implements FactoryBean<ApplicationContextFactory[]>, ApplicationContextAware {