Re: 3t and performance

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Tue Mar 28 2006 - 09:46:08 EST

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    Hi Marcin,

    We have three remaining issues that are must-haves for Beta, all of
    them related to remote contexts: CAY-473, CAY-474, CAY-472.

    http://objectstyle.org/confluence/display/CAY/1.2+RoadMap

    I was going to work on these issues next. Since you volunteered to
    help with caching features (CAY-473), I wanted to check with you
    where are we with it right now?

    Thanks
    Andrus

    On Jan 30, 2006, at 5:52 AM, Marcin Skladaniec wrote:

    > Allright then, I'm waiting for the note, and I will try to work on
    > those features.
    > Cheers
    > Marcin
    >
    > On 30/01/2006, at 11:11 AM, Andrus Adamchik wrote:
    >
    >> [forwarding to devel]
    >>
    >> Appreciate that! Let's hold it off for another week or so, as I am
    >> refactoring the whole stack right now to accommodate nested
    >> contexts. Once the code stabilizes (I'll send a note to DEVEL or
    >> maybe even post an M11 milestone), it would be cool if you could
    >> work on that.
    >>
    >> This is the environment setup instructions (you may have been
    >> through this already):
    >>
    >> http://objectstyle.org/confluence/display/CAY/Developer+Guide
    >>
    >> Now the code... Based on the way things look now, we would need an
    >> analog of DataContextSelectAction for CayenneContext. Current CVS
    >> version of it (that I am actively refactoring) works sort of like
    >> a chain of filters handling different query flags in turn, and
    >> fetching only if results can't be obtained from cache:
    >>
    >> if (metadata.getPageSize() > 0) {
    >> return new IncrementalFaultList(context, query);
    >> }
    >>
    >> if (interceptOIDQuery() == DONE) {
    >> return this.result;
    >> }
    >>
    >> if (interceptRelationshipQuery() == DONE) {
    >> return this.result;
    >> }
    >>
    >> // intercept explicitly cached queries
    >> if (QueryMetadata.LOCAL_CACHE.equals
    >> (metadata.getCachePolicy())) {
    >> return getListViaCache();
    >> }
    >>
    >> return getList();
    >>
    >>
    >> 'interceptOIDQuery' and 'interceptRelationshipQuery' are only used
    >> for nested contexts, so you can ignore that at the moment.
    >>
    >> Andrus
    >>
    >>
    >> On Jan 29, 2006, at 6:55 PM, Marcin Skladaniec wrote:
    >>
    >>>
    >>> I was thinking about helping you with that feature, but I have
    >>> any clue where to start ...
    >>> Thank you,
    >>> Marcin
    >>>
    >>>
    >>> On 30/01/2006, at 10:02 AM, Andrus Adamchik wrote:
    >>>
    >>>> Marcin,
    >>>>
    >>>> Both features (result list caching and query pagination) are not
    >>>> yet supported by CayenneContext (and therefore not available on
    >>>> the client). I am working on something else right now, but I am
    >>>> planning to add this in the nearest future.
    >>>>
    >>>> Andrus

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