How to create Meaningful Primary Keys?

From: Νίκος Παράσχου (niparas..mail.com)
Date: Mon Feb 02 2009 - 06:35:46 EST

  • Next message: Pierre Lavignotte: "Re: How to create Meaningful Primary Keys?"

    Hello,

    It is the first time I am using cayenne and I have some questions
    regarding the primary keys.

    What I want to do is select some rows of a table where the PK has a
    specific value. The problem is I can't access the PK. I can specify
    qualifiers only with the non-PK columns. The PKs I am using have some
    meaning (they are not just numbers) so it is very important to be able
    to use them.

    How can I add the PK to the fields of the Object Entities?

    In this page http://cayenne.apache.org/doc20/primary-key-generation.html
    the answer is to create a Meaningful Primary Key.

    How can I create Meaningful Primary Keys?

    Are there any security issues when using Meaningful Primary Keys?

    Thank you for your time,
    Nikos

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