JPA : Inheritance - Discriminator value not taken into account in generated SQL
- by Julien
I try to use this mapping :
@Entity
@Table(name="ecc.\"RATE\"")
@Inheritance(strategy=InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name="DISCRIMINATOR", discriminatorType= DiscriminatorType.STRING)
public abstract class Rate extends GenericBusinessObject {
...
}
@Entity
@DiscriminatorValue("E")
public class EntranceRate extends Rate {
@ManyToOne
@JoinColumn(name = "\"RATES_GRID_ID\"")
protected RatesGrid ratesGrid;
...
}
@Entity
@Table(name="ecc.\"RATES_GRID\"")
public class RatesGrid extends GenericBusinessObject {
/** */
@OneToMany(mappedBy = "ratesGrid", targetEntity = EntranceRate.class, fetch=FetchType.LAZY)
private List<EntranceRate> entranceRates;
}
When I try to access my entranceRates list from a ratesGrid object, I get this error :
Object with id: 151 was not of the specified subclass: com.ecc.bo.rate.EntranceRate (loaded object was of wrong class class com.ecc.bo.rate.AnnualRate)
Looking at the sql generated, I found no trace of "discriminator=" in the where clause.
What am I doing wrong ?
I use a PostGreSQL database and a Hibernate as JPA provider.
