org.hibernate.annotations

Annotation Type Any

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

Define a ToOne association pointing to several entity types. Matching the according entity type is doe through a metadata discriminator column This kind of mapping should be only marginal.

Author:

Emmanuel Bernard

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
Column	metaColumn Metadata discriminator column description, This column will hold the meta value corresponding to the targeted entity.

Optional Element Summary

Optional Elements

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

Element Detail

metaColumn

public abstract Column metaColumn

Metadata discriminator column description, This column will hold the meta value corresponding to the targeted entity.

metaDef

public abstract String metaDef

Metadata definition used. If defined, should point to a @AnyMetaDef name If not defined, the local (ie in the same field or property) @AnyMetaDef is used

Default:

""

fetch

public abstract 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:

javax.persistence.FetchType.EAGER

optional

public abstract boolean optional

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

Default:

true