The DiscriminatorValue annotation can only be specified
on a concrete entity class.
If the DiscriminatorValue annotation is not specified,
and a discriminator column is used, a provider-specific function
is used to generate a value representing the entity type. If the
DiscriminatorType is STRING, the discriminator value default is the entity name.
The inheritance strategy and the discriminator column are only specified for the root of an entity class hierarchy or subhierarchy in which a different inheritance strategy is applied. But the discriminator value, if not defaulted, should be specified for each concrete entity class in the hierarchy.
Example:
@Entity
@Table(name = "CUST")
@Inheritance(strategy = SINGLE_TABLE)
@DiscriminatorColumn(name = "DISC", discriminatorType = STRING, length = 20)
@DiscriminatorValue("CUSTOMER")
public class Customer { ... }
@Entity
@DiscriminatorValue("VCUSTOMER")
public class ValuedCustomer extends Customer { ... }
DiscriminatorColumn
| Modifier and Type | Method and Description |
|---|---|
| public String |
| value | back to summary |
|---|---|
| public String value() (Optional) The value that indicates that the row is an entity of the annotated entity type. If the | |