Change default for new_generator_mappings to true

Closes gh-7612

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

@@ -202,7 +202,7 @@ public class JpaProperties {
 						this.useNewIdGeneratorMappings.toString());
 			}
 			else if (!result.containsKey(USE_NEW_ID_GENERATOR_MAPPINGS)) {
-				result.put(USE_NEW_ID_GENERATOR_MAPPINGS, "false");
+				result.put(USE_NEW_ID_GENERATOR_MAPPINGS, "true");
 			}
 		}
 

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

@@ -108,17 +108,17 @@ public class JpaPropertiesTests {
 		Map<String, String> hibernateProperties = properties
 				.getHibernateProperties(mockStandaloneDataSource());
 		assertThat(hibernateProperties)
-				.containsEntry(AvailableSettings.USE_NEW_ID_GENERATOR_MAPPINGS, "false");
+				.containsEntry(AvailableSettings.USE_NEW_ID_GENERATOR_MAPPINGS, "true");
 	}
 
 	@Test
-	public void useNewIdGeneratorMappingsTrue() throws Exception {
+	public void useNewIdGeneratorMappingsFalse() throws Exception {
 		JpaProperties properties = load(
-				"spring.jpa.hibernate.use-new-id-generator-mappings:true");
+				"spring.jpa.hibernate.use-new-id-generator-mappings:false");
 		Map<String, String> hibernateProperties = properties
 				.getHibernateProperties(mockStandaloneDataSource());
 		assertThat(hibernateProperties)
-				.containsEntry(AvailableSettings.USE_NEW_ID_GENERATOR_MAPPINGS, "true");
+				.containsEntry(AvailableSettings.USE_NEW_ID_GENERATOR_MAPPINGS, "false");
 	}
 
 	@Test

spring-boot-samples/spring-boot-sample-data-jpa/src/test/java/sample/data/jpa/SampleDataJpaApplicationTests.java

@@ -48,7 +48,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
 @SpringBootTest
 // Enable JMX so we can test the MBeans (you can't do this in a properties file)
 @TestPropertySource(properties = { "spring.jmx.enabled:true",
-		"spring.datasource.jmx-enabled:true" })
+		"spring.datasource.jmx-enabled:true", "spring.jpa.hibernate.use-new-id-generator-mappings=false" })
 @ActiveProfiles("scratch")
 // Separate profile for web tests to avoid clashing databases
 public class SampleDataJpaApplicationTests {

spring-boot-samples/spring-boot-sample-data-jpa/src/test/java/sample/data/jpa/service/CityRepositoryIntegrationTests.java

@@ -23,6 +23,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -34,6 +35,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 public class CityRepositoryIntegrationTests {
 
 	@Autowired

spring-boot-samples/spring-boot-sample-data-jpa/src/test/java/sample/data/jpa/service/HotelRepositoryIntegrationTests.java

@@ -30,6 +30,7 @@ import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Sort.Direction;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -41,6 +42,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 public class HotelRepositoryIntegrationTests {
 
 	@Autowired

spring-boot-samples/spring-boot-sample-data-rest/src/test/java/sample/data/rest/SampleDataRestApplicationTests.java

@@ -23,6 +23,7 @@ import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
@@ -44,6 +45,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 @ActiveProfiles("scratch")
 // Separate profile for web tests to avoid clashing databases
 public class SampleDataRestApplicationTests {

spring-boot-samples/spring-boot-sample-data-rest/src/test/java/sample/data/rest/service/CityRepositoryIntegrationTests.java

@@ -24,6 +24,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -36,6 +37,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 public class CityRepositoryIntegrationTests {
 
 	@Autowired

spring-boot-samples/spring-boot-sample-flyway/src/test/java/sample/flyway/SampleFlywayApplicationTests.java

@@ -22,12 +22,14 @@ import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 public class SampleFlywayApplicationTests {
 
 	@Autowired

spring-boot-samples/spring-boot-sample-jpa/src/test/java/sample/jpa/SampleJpaApplicationTests.java

@@ -22,6 +22,7 @@ import org.junit.runner.RunWith;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.test.context.web.WebAppConfiguration;
 import org.springframework.test.web.servlet.MockMvc;
@@ -40,6 +41,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 @WebAppConfiguration
 public class SampleJpaApplicationTests {
 

spring-boot-samples/spring-boot-sample-jpa/src/test/java/sample/jpa/repository/JpaNoteRepositoryIntegrationTests.java

@@ -23,6 +23,7 @@ import sample.jpa.domain.Note;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -35,6 +36,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 @Transactional
 public class JpaNoteRepositoryIntegrationTests {
 

spring-boot-samples/spring-boot-sample-jpa/src/test/java/sample/jpa/repository/JpaTagRepositoryIntegrationTests.java

@@ -23,6 +23,7 @@ import sample.jpa.domain.Tag;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -35,6 +36,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest
+@TestPropertySource(properties = "spring.jpa.hibernate.use-new-id-generator-mappings=false")
 @Transactional
 public class JpaTagRepositoryIntegrationTests {