Spring-Data JPA: save new entity referencing existing one

Question

The question is basically the same as below one:

JPA cascade persist and references to detached entities throws PersistentObjectException. Why?

I\'m creating

Answer 1

I have the same problem with a @EmbeddedId and business data as part of the id.
The only way to know if the entity is new is performing a (em.find(entity)==null)?em.persist(entity):em.merge(entity)

but spring-data only provides save() method and there is no way to fill the Persistable.isNew() method with a find() method.