RE: Thread Bound DataContexts - Bad Pattern?

From: Joel Trunick (joel.trunic..ebifysolutions.com)
Date: Mon Dec 05 2005 - 21:33:03 EST

  • Next message: Joshua Pyle: "Re: Thread Bound DataContexts - Bad Pattern?"

    You mean your own DTO's or do you just unregister your Cayenne Objects
    so they are transient?

    I store my User object in my Visit, but by just storing it's ObjectId.
    My understanding is this is serializable. BTW, is there a way to easily
    serialize ObjectId to string format?

    J

    -----Original Message-----
    From: Joshua Pyle [mailto:joshua.t.pyl..mail.com]
    Sent: Monday, December 05, 2005 7:30 PM
    To: cayenne-use..bjectstyle.org
    Subject: Re: Thread Bound DataContexts - Bad Pattern?

    Yes I use Transfer objects to store data from cayenne over the life of
    a session. I've found that never storing cayenne objects in the
    session scope cleans up my application and makes session failovers
    much cleaner.

    Joshua T. Pyle

    On 12/5/05, Tore Halset <halse..vv.ntnu.no> wrote:
    > On Dec 5, 2005, at 18:04, Joel Trunick wrote:
    >
    > > I've been putting static methods on my domain objects to perform
    > > things
    > > like queries (for that object), and even simple methods load an
    > > instance
    > > by ID (returning an instance of the proper type). I find this
    > > organization very straightforward to use from a client perspective.
    >
    > I am doing the same, but with DataContext bound to a tapestry Visit
    > object. Just include the context as a argument to the static methods.
    >
    > > 1) When do you ever need multiple datacontexts? (right now from web
    > > app)
    >
    > I use extra DataContext to generate some reports as it is very nice
    > to be able to throw away the DataContext afterwords to save memory.
    >
    > > 2) Is the thread bound context a limitation?
    >
    > I have not used thread bound context that much. You will have to be
    > sure that the contexts are the same as any data objects that live
    > longer than a single request/response. *Or* move objects between
    > contexts.
    >
    > Regards,
    > - Tore.
    >

    --
    Joshua T. Pyle
    Go has always existed.
    



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