Re: Hook in the cayenne internals

From: Michael Gentry (blacknex..mail.com)
Date: Mon Apr 02 2007 - 09:08:44 EDT

  • Next message: Tore Halset: "Re: Hook in the cayenne internals"

    I've used extended types to implement enumerations (essentially -- but mine
    had a lot more oomph behind it), but these were all integer/string values,
    not blobs. My implementation of that is on the Cayenne Wiki, but I wrote it
    for Java 1.4 and a co-worker had trouble with it working under Java 1.5, but
    I haven't explored it yet. I'm not sure if it would help you, but it might
    be worth looking at (since the code shows how to read/write the types -- do
    the translation).

    /dev/mrg

    PS. Wiki link: http://cwiki.apache.org/CAY/enumerations-example.html

    On 4/2/07, jerome moliere <jerome.molier..mail.com> wrote:
    >
    > Hi all,
    > I'd like to show on a simple test the Cayenne equivalent for the Hibernate
    > UserType, that is to say
    > a way to map some SQL types with some user provided code...
    > Example given is : my customers use sybase image type to store XML gzipped
    > huge files...
    > I'd like to be able to be able to store/read the XML transparently...Image
    > type is a detail of implementation
    > org.apache.cayenne.access.types.ExtendedType
    > seems to be the Cayenne solution but there are no big details on this
    > subject...
    >
    > Is the Cayenne source code my only source ?
    > Moreover if you have UML sequence diagrams and other conception documents
    > on
    > Cayenne, I'd very happy to read them..
    >
    >
    > Cheers
    > Jerome
    > --
    > Jerome Moliere - Mentor/J
    > http://romjethoughts.blogspot.com/
    > auteur Eyrolles
    >

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