On 6/16/11 2:02 PM, Kiran Ayyagari wrote:
On Thu, Jun 16, 2011 at 5:00 PM, Emmanuel Lecharny<[email protected]> wrote:
On 6/16/11 1:18 PM, Kiran Ayyagari wrote:
On Thu, Jun 16, 2011 at 3:29 PM, Emmanuel Lecharny<[email protected]>
wrote:
Hi guys,
just wondering if we need to keep the intermediate AndCursor class ? All
in
all, when building the cursors, if we have a conjonction, we will pick
the
smallest cursor to store it as wrapped into the AndCursor, so I wonder if
it's not a good idea to simply remove this cursor from the equation ?
I don't think so, we do need evaluators also
What for ? Can't we use the underlying cursor's evaluator ?
yeap, agree, this indeed speeds up evaluation
OTOH, I prefer to keep a hint about conjunction in the returned cursor
or we can also change AndCursor to not use evaluators
but just as a dumb wrapper (i.e new AndCursor(IndexCursor) )
Hmmm, seems that the AndCursor also needs to evaluate candidate against
the non selected indexes. Removing it will simply retruns too many entries.
PS : Sorry if those seem stupid questions, I'm trying to get a key about
this part of the code I don't know atm. Thanks for the responses.
--
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com
