Re: [eclipselink-users] @EmbeeddedId vs @IdClass

["Guy Pelletier" <guy.pelletier@xxxxxxxxxx>]

 

If you use an EmbeddedId, you are not required to specify the @Id or @Column on the pk fields, but you can if you want to map different values. If your Embeddable is shared you can use attribute overrides on the @EmbeddedId mapping.

 

Cheers,

Guy

----- Original Message -----

From: Christopher.Mathrusse@xxxxxxxxxx

To: Eclipselink-Users

Sent: Thursday, December 17, 2009 4:28 PM

Subject: [eclipselink-users] @EmbeeddedId vs @IdClass

Is there any preference in which one to use when it comes to composite Primary Keys? I can see from the documentation that I can use either or, but I'm wondering which one is preferable.

And if I decide to use the @Embeddable annotation on my PrimaryKey class, and @EmbeddedId in my entity,  do I need to annotate the Pk fields with @Column and @Id?

Thanks for the help...

Chris Mathrusse
christopher.mathrusse@xxxxxxxxxx

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