How to set Hibernate naming strategy in Spring Data JPA - spring

Question

I use Spring Data JPA and use multiple database, so I must configure it myself instead of using #HibernateJpaAutoConfiguration.
public class TesterDbConfig {
#Autowired(required = false)
private PersistenceUnitManager persistenceUnitManager;
#Bean
public JpaProperties testerJpaProperties() {
JpaProperties jpaProperties = new JpaProperties();
return jpaProperties;
}
#Bean
#Primary
#ConfigurationProperties(prefix = "datasource.primary")
public DataSource testerDataSource() {
return (DataSource) DataSourceBuilder.create().type(DataSource.class).build();
}
#Bean
public LocalContainerEntityManagerFactoryBean testerEntityManager(
JpaProperties testerJpaProperties) {
EntityManagerFactoryBuilder builder = createEntityManagerFactoryBuilder(testerJpaProperties);
return builder.dataSource(testerDataSource()).packages(Cabang.class).persistenceUnit("primary")
.build();
}
#Bean
public JpaTransactionManager testerTransactionManager(EntityManagerFactory testerEntityManager) {
return new JpaTransactionManager(testerEntityManager);
}
private EntityManagerFactoryBuilder createEntityManagerFactoryBuilder(
JpaProperties testerJpaProperties) {
JpaVendorAdapter jpaVendorAdapter = createJpaVendorAdapter(testerJpaProperties);
return new EntityManagerFactoryBuilder(jpaVendorAdapter, testerJpaProperties,
this.persistenceUnitManager);
}
private JpaVendorAdapter createJpaVendorAdapter(JpaProperties testerJpaProperties) {
AbstractJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
adapter.setShowSql(testerJpaProperties.isShowSql());
adapter.setDatabase(testerJpaProperties.getDatabase());
adapter.setDatabasePlatform(testerJpaProperties.getDatabasePlatform());
adapter.setGenerateDdl(testerJpaProperties.isGenerateDdl());
return adapter;
}
}
With this, every time I create a model, I must use #Column in every variable because in my database, I use snake case, but in model class, I use camel case.
How can I set the Hibernate naming strategy?

Answer 1

You can set it via JpaProperties, which you already use in your configuration:
#Bean
public JpaProperties testerJpaProperties() {
JpaProperties jpaProperties = new JpaProperties();
JpaProperties.Hibernate hibernate = new JpaProperties.Hibernate();
hibernate.setNamingStrategy(SpringNamingStrategy.class);
jpaProperties.setHibernate(hibernate);
return jpaProperties;
}
And add
#Bean
public LocalContainerEntityManagerFactoryBean testerEntityManager(
JpaProperties testerJpaProperties) {
EntityManagerFactoryBuilder builder = createEntityManagerFactoryBuilder(testerJpaProperties);
return builder.dataSource(testerDataSource())
.packages(Cabang.class)
.persistenceUnit("primary")
.properties(Collections.singletonMap("hibernate.ejb.naming_strategy",testerJpaProperties.getHibernate().getNamingStrategy()))
.build();
}