Re: Caching update

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Sun Feb 12 2006 - 12:49:47 EST

  • Next message: Cris Daniluk: "Re: Caching update"

    Yep. (although I overlooked this issue)

    BTW, I also think this was a current CVS issue only. Just curious -
    what version of Cayenne did you use when you discovered it?

    Andrus

    On Feb 12, 2006, at 10:49 AM, Cris Daniluk wrote:

    > Does this imply a fix for CAY-444? :)
    >
    > On 2/12/06, Andrus Adamchik <andru..bjectstyle.org> wrote:
    >> Marcin, et al.
    >>
    >> FYI: I just made a few changes to the caching mechanism to address
    >> bugs in the new code and plug some of the earlier design holes:
    >>
    >> * Fixed caching mechanism for Queries with parameters that stored in
    >> the DataMap (I am not sure whether this worked before, as we didn't
    >> have appropriate unit tests, but it certainly didn't work with CVS
    >> code).
    >>
    >> I introduced QueryMetadata.getCacheKey() as a way to find how to
    >> cache a query result. This allows indirect queries (such as
    >> NamedQuery) to use a cache key in runtime that is different from its
    >> name. Thus we can correctly cache results obtained for the same
    >> query, but different sets of parameters.
    >>
    >> * Added two more cache types: QueryMetadata.LOCAL_CACHE_REFRESH and
    >> QueryMetadata.SHARED_CACHE_REFRESH. These basically tell Cayenne "I
    >> want current cache to be expired, and the new result to be cached".
    >>
    >> My feeling is that "setRefreshingObjects" (that was used before for
    >> refresh purposes) was a hack because it meant something entirely
    >> different (refresh individual objects). For instance if a query
    >> stored in a map had both caching and refresh checked in the Modeler,
    >> it would never work from cache, but always store the results. Makes
    >> no sense.
    >>
    >> I need to load this info to Wiki, but I figured I post it here first.
    >>
    >> Andrus
    >>
    >



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