[Resolvido](Hibernate) Associação Ternária por Annotation

Já virei o google de ponta cabeça, achei até algo sobre o composite-id - mas somente para XML.

Até no Faq do hibernate, tem:

Polymorphic associations

For all three mapping strategies!

* Many-to-one: An object reference transparently mapped to a foreign key association or an association table
* One-to-many: A collection of objects transparently mapped to a foreign key association or an association table
* Many-to-many: A collection of objects transparently mapped to an association table
* One-to-one: An object reference transparently mapped to a primary key, or unique foreign key association or an association table
* Ternary: A Map containing and keyed by objects mapped to a ternary association (with or without an association table)

Any association may be mapped to a foreign key which references a non-primary unique key

Foreign keys themselves may even be composed of columns, SQL formulas and/or literals

Mas eu não entendi o lance desse MAP aí…

Qual a melhor maneira de criar uma associação ternária usando anotações?