Package org.hibernate.annotations

Annotation Type Any

@Target({METHOD,FIELD})
@Retention(RUNTIME)
public @interface Any

Maps a discriminated to-one style association pointing to one of several entity types depending on a local discriminator, as opposed to discriminated inheritance where the discriminator is kept as part of the entity hierarchy (see Inheritance and InheritanceType.SINGLE_TABLE for details about discriminated inheritance mappings).

For example, if you consider an Order entity containing Payment information where Payment might be of type CashPayment or CreditCardPayment, the @Any approach would be to keep that discriminator and matching value on the Order itself instead as part of the Payment class. Thought of another way, the "foreign key" is really made up of the value and discriminator. Note however that this composite foreign-key is a conceptual and cannot be phsical.

• Use Column or Formula to define the "column" to which the discriminator is mapped.
• Use JoinColumn to describe the key column
• Use AnyDiscriminator, JdbcType or JdbcTypeCode to describe the mapping for the discriminator
• Use AnyKeyJavaType, AnyKeyJavaClass, AnyKeyJdbcType or AnyKeyJdbcTypeCode to describe the mapping for the key
• Use AnyDiscriminatorValues to specify how discriminator values map to entity types

See Also:

ManyToAny

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
FetchType	fetch	Defines whether the value of the field or property should be lazily loaded or must be eagerly fetched.
boolean	optional	Whether the association is optional.

Element Detail

fetch

FetchType fetch

Defines whether the value of the field or property should be lazily loaded or must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider runtime that the value must be eagerly fetched. The LAZY strategy is applied when bytecode enhancement is used. If not specified, defaults to EAGER.

Default:

jakarta.persistence.FetchType.EAGER

optional

boolean optional

Whether the association is optional. If set to false then a non-null relationship must always exist.

Default:

true