I have simple spring-jpa configuration where I have configured Hibernate's ImprovedNamingStrategy. This means if my entity class has a variable userName, then Hibernate should convert it to user_name for querying the database. But this naming conversion stopped working after I upgraded to Hibernate 5. I am getting the error:
ERROR: Unknown column 'user0_.userName' in 'field list'
This is my Hibernate config:
@Configuration
@EnableJpaRepositories("com.springJpa.repository")
@EnableTransactionManagement
public class DataConfig {
@Bean
public DataSource dataSource(){
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setDriverClassName("com.mysql.jdbc.Driver");
ds.setUrl("jdbc:mysql://localhost:3306/test");
ds.setUsername("root");
ds.setPassword("admin");
return ds;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(){
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setShowSql(Boolean.TRUE);
vendorAdapter.setDatabase(Database.MYSQL);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
factory.setDataSource(dataSource());
factory.setPackagesToScan("com.springJpa.entity");
Properties jpaProperties = new Properties();
jpaProperties.put("hibernate.ejb.naming_strategy","org.hibernate.cfg.ImprovedNamingStrategy");
jpaProperties.put("hibernate.dialect","org.hibernate.dialect.MySQL5InnoDBDialect");
factory.setJpaProperties(jpaProperties);
factory.afterPropertiesSet();
return factory;
}
@Bean
public SharedEntityManagerBean entityManager() {
SharedEntityManagerBean entityManager = new SharedEntityManagerBean();
entityManager.setEntityManagerFactory(entityManagerFactory().getObject());
return entityManager;
}
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory().getObject());
return txManager;
}
@Bean
public ImprovedNamingStrategy namingStrategy(){
return new ImprovedNamingStrategy();
}
}
This is my Entity class:
@Getter
@Setter
@Entity
@Table(name="user")
public class User{
@Id
@GeneratedValue
private Long id;
private String userName;
private String email;
private String password;
private String role;
}
I don't want to explicitly name my database fields within the @Column annotations. I want my configuration which can implicitly convert camel case to underscore.
Please guide.
