Re: application scope for a datacontext ?

From: Jürgen Saar (jsaa..eb.de)
Date: Sun Mar 06 2005 - 04:53:03 EST

  • Next message: Todd O'Bryan: "Heretofore unseen error"

    For all Queries the Dataobjects are in a updatable state
    until the datacontext is commited or rolledback.

    Here I suggest the main problem.

    My main web-application based on cayenne, is also readonly,
    but I have decided for a session based context ... to be save.

    cayenne-use..bjectstyle.org schrieb am 04.03.05 16:18:38:
    >
    > Hi there!
    > I am currently developing a web application using Cayenne that makes
    > read-only accesses to a database, with a Level 1 caching (no cache sharing).
    > I am thinking about a way to have only one DataContext serving only one
    > ObjectStore so every user would then benefit from everybody's past
    > requests.
    >
    > Is it possible and a good idea to change a Session-Bound DataContext to
    > an Application-Bound DataContext or should I stick to session-bound
    > datacontexts ?
    > If yes, how can I do it and is it thread-safe? How to prevent the cache
    > from growing infinitely?
    >
    > Also, our database will also be frequently updated by other
    > applications... How can the datacontext be aware of those changes?
    >
    > Thanks in advance...
    >
    > --
    > Julien Vignali
    > julien.vignal..im.hcuge.ch

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