Re: prefetching

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Fri Dec 12 2003 - 01:40:05 EST

  • Next message: Tore Halset: "Re: prefetching"

    Hi Tore,

    > aPerson.getHairstyle()

    This line will used a cached hairstyle instead of triggering a query
    because of uniquing. If a hairstyle for a particular ID is already in
    the DataContext, Cayenne knows how to get it in this case. So it is
    magic :-)

    Andrus

    On Dec 10, 2003, at 8:42 AM, Tore Halset wrote:

    > One more thing...
    >
    > As described, the persons are fetched by a SelectQuery. I do not
    > understand (from the documentation) how it will prevent prefetching
    > when I do a
    >
    > aPerson.getHairstyle()
    >
    > I do not have a obj-property for hairstyle on person, but the relation
    > are defined. Should I define the obj-property for hairstyle on person
    > and use that to find a hairstyle-object in a preloaded list?
    >
    > I do understand how the preloaded hairstyles will help me when I want
    > to create new persons.
    >
    > - Tore.

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