Merge pull request #3818 from madorb/master

* pr/3818:
  Polish contribution
  Consistently apply table prefix

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

@@ -140,6 +140,10 @@ class BasicBatchConfigurer implements BatchConfigurer {
 			logger.warn("JPA does not support custom isolation levels, so locks may not be taken when launching Jobs");
 			factory.setIsolationLevelForCreate("ISOLATION_DEFAULT");
 		}
+		String tablePrefix = this.properties.getTablePrefix();
+		if (StringUtils.hasText(tablePrefix)) {
+			factory.setTablePrefix(tablePrefix);
+		}
 		factory.setTransactionManager(getTransactionManager());
 		factory.afterPropertiesSet();
 		return factory.getObject();

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

@@ -68,6 +68,7 @@ import static org.junit.Assert.assertTrue;
  * Tests for {@link BatchAutoConfiguration}.
  *
  * @author Dave Syer
+ * @author Stephane Nicoll
  */
 public class BatchAutoConfigurationTests {
 
@@ -224,9 +225,12 @@ public class BatchAutoConfigurationTests {
 			PropertyPlaceholderAutoConfiguration.class);
 		this.context.refresh();
 		assertNotNull(this.context.getBean(JobLauncher.class));
-		assertNotNull(this.context.getBean(JobExplorer.class));
 		assertEquals(0, new JdbcTemplate(this.context.getBean(DataSource.class))
 			.queryForList("select * from PREFIX_JOB_EXECUTION").size());
+		JobExplorer jobExplorer = this.context.getBean(JobExplorer.class);
+		assertEquals(0, jobExplorer.findRunningJobExecutions("test").size());
+		JobRepository jobRepository = this.context.getBean(JobRepository.class);
+		assertNull(jobRepository.getLastJobExecution("test", new JobParameters()));
 	}
 
 	@Configuration