Question

How can I configure the persistence.xml so that i don’t need to put all these @Column annotations into my entities to let the entitymanager use exactly the same case as the fieldname. By default all the fieldnames are uppercase when i look into the log file.

  @Entity
  @Table(name="INDICATE", schema="inet")
  public class Indicate implements Serializable {

      private static final long serialVersionUID = 1L;
      @Id 
      @GeneratedValue(strategy=GenerationType.IDENTITY)
      @Column(name="indID", insertable = false, nullable=false, unique=true) private Long indID;
      @Column(name="prditmNO") private String prditmNO;
      @Column(name="indREASON") private Integer indREASON;
      @Column(name="indIP") private String indTCPIP;

Thank you.

Answer 1

You can implement your own org.hibernate.cfg.NamingStrategy for that requirement in Hibernate. The easiest way would be to override org.hibernate.cfg.ImprovedNamingStrategy and implement all methods that influence naming rules for tables and columns.

public class CaseSensitiveNamingStrategy extends ImprovedNamingStrategy {

    @Override
    public String tableName(String name){
        return name;
    }

    @Override
    public String columnName(String name){
        return name;
    }

}

Please keep in mind that there might be more methods that you want to override. See the JavaDocs for further documentation on this class.

Remember to register your custom NamingStrategy implementation in Hibernate. This can be done programatically when creating a SessionFactory.

Configuration config = new AnnotationConfiguration().configure();
config.setNamingStrategy(new CaseSensitiveNamingStrategy());
SessionFactory sessionFactory = config.buildSessionFactory();

Alternatively you can use the declarative way to register a custom NamingStrategy setting the property hibernate.ejb.naming_strategy to the full qualified class name of your NamingStrategy implementation like this:

<property name="hibernate.ejb.naming_strategy"
          value="stackoverflow.CaseSensitiveNamingStrategy"/>