Revisit the configuration code of EnableBatchProcessing

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

@@ -36,4 +36,21 @@ public BatchConfigurationException(Throwable t) {
 		super(t);
 	}
 
+	/**
+	 * Create an exception with the given message.
+	 * @param message the error message
+	 */
+	public BatchConfigurationException(String message) {
+		super(message);
+	}
+
+	/**
+	 * Create an exception with the given message and {@link Throwable}.
+	 * @param message the error message
+	 * @param cause an exception to be wrapped
+	 */
+	public BatchConfigurationException(String message, Throwable cause) {
+		super(message, cause);
+	}
+
 }

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

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.batch.core.configuration.annotation;
+
+import java.util.Iterator;
+
+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.DefaultJobLoader;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+
+/**
+ * Post processor that configures the {@link AutomaticJobRegistrar} registered by
+ * {@link BatchRegistrar} with required properties.
+ *
+ * @author Mahmoud Ben Hassine
+ * @since 5.0
+ */
+class AutomaticJobRegistrarBeanPostProcessor implements BeanFactoryPostProcessor, BeanPostProcessor {
+
+	private ConfigurableListableBeanFactory beanFactory;
+
+	@Override
+	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
+		this.beanFactory = beanFactory;
+	}
+
+	@Override
+	public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
+		if (bean instanceof AutomaticJobRegistrar) {
+			AutomaticJobRegistrar automaticJobRegistrar = (AutomaticJobRegistrar) bean;
+			automaticJobRegistrar.setJobLoader(new DefaultJobLoader(this.beanFactory.getBean(JobRegistry.class)));
+			for (ApplicationContextFactory factory : this.beanFactory.getBeansOfType(ApplicationContextFactory.class)
+					.values()) {
+				automaticJobRegistrar.addApplicationContextFactory(factory);
+			}
+			return automaticJobRegistrar;
+		}
+		return bean;
+	}
+
+}