Merge pull request #25129 from bono007

* pr/25129:
  Polish "Take JPA database action into account when setting ddlAuto"
  Take JPA database action into account when setting ddlAuto

Closes gh-25129

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/DataSourceInitializedPublisher.java

@@ -129,7 +129,8 @@ class DataSourceInitializedPublisher implements BeanPostProcessor {
 				: "none");
 		Map<String, Object> hibernate = this.hibernateProperties.determineHibernateProperties(
 				this.jpaProperties.getProperties(), new HibernateSettings().ddlAuto(defaultDdlAuto));
-		return hibernate.containsKey("hibernate.hbm2ddl.auto");
+		return hibernate.containsKey("hibernate.hbm2ddl.auto") || !hibernate
+				.getOrDefault("javax.persistence.schema-generation.database.action", "none").equals("none");
 	}
 
 	/**

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/HibernateProperties.java

@@ -35,6 +35,7 @@ import org.springframework.util.StringUtils;
  * Configuration properties for Hibernate.
  *
  * @author Stephane Nicoll
+ * @author Chris Bono
  * @since 2.1.0
  * @see JpaProperties
  */
@@ -133,7 +134,13 @@ public class HibernateProperties {
 		if (ddlAuto != null) {
 			return ddlAuto;
 		}
-		return (this.ddlAuto != null) ? this.ddlAuto : defaultDdlAuto.get();
+		if (this.ddlAuto != null) {
+			return this.ddlAuto;
+		}
+		if (existing.get(AvailableSettings.HBM2DDL_DATABASE_ACTION) != null) {
+			return null;
+		}
+		return defaultDdlAuto.get();
 	}
 
 	public static class Naming {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfigurationTests.java

@@ -91,6 +91,7 @@ import static org.mockito.Mockito.mock;
  * @author Andy Wilkinson
  * @author Kazuki Shimizu
  * @author Stephane Nicoll
+ * @author Chris Bono
  */
 class HibernateJpaAutoConfigurationTests extends AbstractJpaAutoConfigurationTests {
 
@@ -371,6 +372,68 @@ class HibernateJpaAutoConfigurationTests extends AbstractJpaAutoConfigurationTes
 				.run((context) -> assertThat(context).doesNotHaveBean(City.class));
 	}
 
+	@Test
+	void vendorPropertiesWithEmbeddedDatabaseAndNoDdlProperty() {
+		contextRunner().run(vendorProperties((vendorProperties) -> {
+			assertThat(vendorProperties).doesNotContainKeys(AvailableSettings.HBM2DDL_DATABASE_ACTION);
+			assertThat(vendorProperties.get(AvailableSettings.HBM2DDL_AUTO)).isEqualTo("create-drop");
+		}));
+	}
+
+	@Test
+	void vendorPropertiesWithDdlAutoPropertyIsSet() {
+		contextRunner().withPropertyValues("spring.jpa.hibernate.ddl-auto=update")
+				.run(vendorProperties((vendorProperties) -> {
+					assertThat(vendorProperties).doesNotContainKeys(AvailableSettings.HBM2DDL_DATABASE_ACTION);
+					assertThat(vendorProperties.get(AvailableSettings.HBM2DDL_AUTO)).isEqualTo("update");
+				}));
+	}
+
+	@Test
+	void vendorPropertiesWithDdlAutoPropertyAndHibernatePropertiesAreSet() {
+		contextRunner()
+				.withPropertyValues("spring.jpa.hibernate.ddl-auto=update",
+						"spring.jpa.properties.hibernate.hbm2ddl.auto=create-drop")
+				.run(vendorProperties((vendorProperties) -> {
+					assertThat(vendorProperties).doesNotContainKeys(AvailableSettings.HBM2DDL_DATABASE_ACTION);
+					assertThat(vendorProperties.get(AvailableSettings.HBM2DDL_AUTO)).isEqualTo("create-drop");
+				}));
+	}
+
+	@Test
+	void vendorPropertiesWithDdlAutoPropertyIsSetToNone() {
+		contextRunner().withPropertyValues("spring.jpa.hibernate.ddl-auto=none")
+				.run(vendorProperties((vendorProperties) -> assertThat(vendorProperties).doesNotContainKeys(
+						AvailableSettings.HBM2DDL_DATABASE_ACTION, AvailableSettings.HBM2DDL_AUTO)));
+	}
+
+	@Test
+	void vendorPropertiesWhenJpaDdlActionIsSet() {
+		contextRunner()
+				.withPropertyValues("spring.jpa.properties.javax.persistence.schema-generation.database.action=create")
+				.run(vendorProperties((vendorProperties) -> {
+					assertThat(vendorProperties.get(AvailableSettings.HBM2DDL_DATABASE_ACTION)).isEqualTo("create");
+					assertThat(vendorProperties).doesNotContainKeys(AvailableSettings.HBM2DDL_AUTO);
+				}));
+	}
+
+	@Test
+	void vendorPropertiesWhenBothDdlAutoPropertiesAreSet() {
+		contextRunner()
+				.withPropertyValues("spring.jpa.properties.javax.persistence.schema-generation.database.action=create",
+						"spring.jpa.hibernate.ddl-auto=create-only")
+				.run(vendorProperties((vendorProperties) -> {
+					assertThat(vendorProperties.get(AvailableSettings.HBM2DDL_DATABASE_ACTION)).isEqualTo("create");
+					assertThat(vendorProperties.get(AvailableSettings.HBM2DDL_AUTO)).isEqualTo("create-only");
+				}));
+	}
+
+	private ContextConsumer<AssertableApplicationContext> vendorProperties(
+			Consumer<Map<String, Object>> vendorProperties) {
+		return (context) -> vendorProperties
+				.accept(context.getBean(HibernateJpaConfiguration.class).getVendorProperties());
+	}
+
 	@Test
 	void withSyncBootstrappingAnApplicationListenerThatUsesJpaDoesNotTriggerABeanCurrentlyInCreationException() {
 		contextRunner().withUserConfiguration(JpaUsingApplicationListenerConfiguration.class)

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/orm/jpa/HibernatePropertiesTests.java

@@ -44,6 +44,7 @@ import static org.mockito.Mockito.verify;
  *
  * @author Stephane Nicoll
  * @author Artsiom Yudovin
+ * @author Chris Bono
  */
 class HibernatePropertiesTests {
 
@@ -135,6 +136,19 @@ class HibernatePropertiesTests {
 				.run(assertDefaultDdlAutoNotInvoked("create"));
 	}
 
+	@Test
+	void defaultDdlAutoIsNotInvokedAndDdlAutoIsNotSetIfJpaDbActionPropertyIsSet() {
+		this.contextRunner
+				.withPropertyValues(
+						"spring.jpa.properties.javax.persistence.schema-generation.database.action=drop-and-create")
+				.run(assertHibernateProperties((hibernateProperties) -> {
+					assertThat(hibernateProperties).doesNotContainKey(AvailableSettings.HBM2DDL_AUTO);
+					assertThat(hibernateProperties).containsEntry(AvailableSettings.HBM2DDL_DATABASE_ACTION,
+							"drop-and-create");
+					verify(this.ddlAutoSupplier, never()).get();
+				}));
+	}
+
 	private ContextConsumer<AssertableApplicationContext> assertDefaultDdlAutoNotInvoked(String expectedDdlAuto) {
 		return assertHibernateProperties((hibernateProperties) -> {
 			assertThat(hibernateProperties).containsEntry(AvailableSettings.HBM2DDL_AUTO, expectedDdlAuto);