Hi All,

I manage to create a custom type for money. It contains currency and amount. I read some topics from Internet. I found there's annotation @Embedded and @org.hibernate.annotation.Type. It seems both of them doing the same thing. My questions is what diff. between these two and also which one is the best to do in my situation? Can anyone give me some advice.

Best Rdgs
Ellis

Hi,

there is a conceptional difference. @Embedded is about the component concept. It allows you to have the properties of an @Embeddable class mapped into the table of the entity using the embeddable class. In Hibernate calls @Embeddable classes components - http://www.hibernate.org/hib_docs/v3/reference/en/html_single/#components-dependentobjects. Components express to a certain degree what in UML is considered an aggregation.

On the other hand you can tell Hibernate how to persist a certain poperty/class by defining a custom type - http://www.hibernate.org/hib_docs/v3/reference/en/html_single/#mapping-types-custom.

Of course you could also map your money class as full entity.

Which way you choose depends to a certain degree on your personal taste and requirements. I would probably use the component or full entity approach.

--Hardy