how to get the value of @DiscriminatorColumn()?

Question

hello I have a problem with inheritance in EJB. I show you my code after

@Entity
@Inheritance(strategy=InheritanceType.JOINED)
@DiscriminatorColumn(name="PROJ_TYPE")
@Table(name="PROJECT")
public abstract class Project {
  @Id
  private long id;
  ...
}

@Entity
@DiscriminatorValue("L");
@Table(name="LARGEPROJECT")
public class LargeProject extends Project {
  private BigDecimal budget;
}

@Entity
@DiscriminatorValue("S");
@Table(name="SMALLPROJECT")
public class SmallProject extends Project {
}

how to get the value of

PROJ_TYPE

. the only solution that I use nativeQuery ,but is there another solution???

sorry for my english and thank you in advance

possible duplicate of [How to get the DiscriminatorValue at run time](http://stackoverflow.com/questions/3005383/how-to-get-the-discriminatorvalue-at-run-time) — s.Daniel, Jul 21 '14 at 11:16

score 4 · Answer 1 · answered Nov 20 '10 at 13:18

4

It should also be possible to map the discriminator as an additional column, as long as it is not updatable or insertable.

@Column(name="PROJ_TYPE", nullable=false, updatable=false, insertable=false)
private String projectType;

answered Nov 20 '10 at 13:18

Jörn Horstmann

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Ok thanks I will try this my problem was how to get value of PROJ_TYPE from datbase because i don’t have a get for PROJ_TYPE in entity – kohan Nov 20 '10 at 23:28

how to get the value of @DiscriminatorColumn()?

1 Answers1