Only configure Spring Data jdbc if a transaction manager is present

This commit adds an extra condition to JdbcRepositoriesAutoConfiguration
so that it doesn't scan for repositories if a transaction manager is not
available as this dependency is now mandatory.

Closes gh-17654

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/jdbc/JdbcRepositoriesAutoConfiguration.java

@@ -22,6 +22,7 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
 import org.springframework.boot.autoconfigure.jdbc.JdbcTemplateAutoConfiguration;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
@@ -30,6 +31,7 @@ import org.springframework.data.jdbc.repository.config.EnableJdbcRepositories;
 import org.springframework.data.jdbc.repository.config.JdbcConfiguration;
 import org.springframework.data.jdbc.repository.config.JdbcRepositoryConfigExtension;
 import org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations;
+import org.springframework.transaction.PlatformTransactionManager;
 
 /**
  * {@link EnableAutoConfiguration Auto-configuration} for Spring Data's JDBC Repositories.
@@ -39,16 +41,17 @@ import org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations;
  * providing an {@link AbstractJdbcConfiguration} subclass.
  *
  * @author Andy Wilkinson
+ * @author Stephane Nicoll
  * @since 2.1.0
  * @see EnableJdbcRepositories
  */
 @SuppressWarnings("deprecation")
 @Configuration(proxyBeanMethods = false)
-@ConditionalOnBean(NamedParameterJdbcOperations.class)
+@ConditionalOnBean({ NamedParameterJdbcOperations.class, PlatformTransactionManager.class })
 @ConditionalOnClass({ NamedParameterJdbcOperations.class, AbstractJdbcConfiguration.class })
 @ConditionalOnProperty(prefix = "spring.data.jdbc.repositories", name = "enabled", havingValue = "true",
 		matchIfMissing = true)
-@AutoConfigureAfter(JdbcTemplateAutoConfiguration.class)
+@AutoConfigureAfter({ JdbcTemplateAutoConfiguration.class, DataSourceTransactionManagerAutoConfiguration.class })
 public class JdbcRepositoriesAutoConfiguration {
 
 	@Configuration(proxyBeanMethods = false)

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/jdbc/JdbcRepositoriesAutoConfigurationTests.java

@@ -34,8 +34,8 @@ import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.jdbc.repository.config.AbstractJdbcConfiguration;
 import org.springframework.data.jdbc.repository.config.EnableJdbcRepositories;
-import org.springframework.data.jdbc.repository.config.JdbcRepositoryConfigExtension;
 import org.springframework.data.repository.Repository;
+import org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -53,14 +53,25 @@ class JdbcRepositoriesAutoConfigurationTests {
 	@Test
 	void backsOffWithNoDataSource() {
 		this.contextRunner.withUserConfiguration(TestConfiguration.class)
-				.run((context) -> assertThat(context).doesNotHaveBean(JdbcRepositoryConfigExtension.class));
+				.run((context) -> assertThat(context).doesNotHaveBean(AbstractJdbcConfiguration.class));
 	}
 
 	@Test
 	void backsOffWithNoJdbcOperations() {
 		this.contextRunner.with(database()).withUserConfiguration(TestConfiguration.class).run((context) -> {
 			assertThat(context).hasSingleBean(DataSource.class);
-			assertThat(context).doesNotHaveBean(JdbcRepositoryConfigExtension.class);
+			assertThat(context).doesNotHaveBean(AbstractJdbcConfiguration.class);
+		});
+	}
+
+	@Test
+	void backsOffWithNoTransactionManager() {
+		this.contextRunner.with(database())
+				.withConfiguration(AutoConfigurations.of(JdbcTemplateAutoConfiguration.class))
+				.withUserConfiguration(TestConfiguration.class).run((context) -> {
+					assertThat(context).hasSingleBean(DataSource.class);
+					assertThat(context).hasSingleBean(NamedParameterJdbcOperations.class);
+					assertThat(context).doesNotHaveBean(AbstractJdbcConfiguration.class);
 				});
 	}