Polish "Allow to configure validateTransactionState for Spring Batch"

See gh-44803

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/batch/BatchAutoConfiguration.java

@@ -143,8 +143,7 @@ public class BatchAutoConfiguration {
 
 		@Override
 		protected boolean getValidateTransactionState() {
-			Boolean validateTransactionState = this.properties.getJdbc().getValidateTransactionState();
-			return (validateTransactionState != null) ? validateTransactionState : super.getValidateTransactionState();
+			return this.properties.getJdbc().isValidateTransactionState();
 		}
 
 		@Override

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/batch/BatchProperties.java

@@ -71,7 +71,7 @@ public class BatchProperties {
 		/**
 		 * Whether to validate the transaction state.
 		 */
-		private Boolean validateTransactionState;
+		private boolean validateTransactionState = true;
 
 		/**
 		 * Transaction isolation level to use when creating job meta-data for new jobs.
@@ -99,7 +99,7 @@ public class BatchProperties {
 		 */
 		private DatabaseInitializationMode initializeSchema = DatabaseInitializationMode.EMBEDDED;
 
-		public Boolean getValidateTransactionState() {
+		public boolean isValidateTransactionState() {
 			return this.validateTransactionState;
 		}
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/batch/BatchPropertiesTests.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2012-2025 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.
+ * 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.boot.autoconfigure.batch;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.batch.core.configuration.support.DefaultBatchConfiguration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link BatchProperties}.
+ *
+ * @author Andy Wilkinson
+ */
+class BatchPropertiesTests {
+
+	@Test
+	void validateTransactionStateDefaultMatchesSpringBatchDefault() {
+		assertThat(new BatchProperties().getJdbc().isValidateTransactionState())
+			.isEqualTo(new TestBatchConfiguration().getValidateTransactionState());
+	}
+
+	static class TestBatchConfiguration extends DefaultBatchConfiguration {
+
+		@Override
+		public boolean getValidateTransactionState() {
+			return super.getValidateTransactionState();
+		}
+
+	}
+
+}