Re: [tablix-list] Tablix roadmap

From: Tomaz Solc <>
Date: Wed Dec 15 2004 - 10:29:28 CET

Hash: SHA1


| 1) I'd tidy up the central data structures to optimise the speed of
| processing as far as possible. Have just a simple array of slots
| (number of slots == number of periods in the week), with no double
| indirection and no double indexing. This is something I've already
| looked at, but haven't got beyond the planning stage with.
| Subsidiary information (like which day of the week a given period
| falls on) can be additional information in the slot. This would
| speed things up and greatly facilitate the handling of
| non-rectangular weeks (or indeed, other things which don't involve
| weeks).

I'm not sure if I understand this correctly. Time, at which a given
tuple is scheduled, is already represented as a serial number of the
period in the week ("time" field in struct "gen").

Day of the week is currently calculated as "time/PERIODS" where PERIODS
is the number of periods per week. Non-rectangular weeks could be
implemented by replacing this division by a more complicated function.

Which structure does not need double indexing and indirection?

Best regards
Tomaz Solc
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Received on Wed Dec 15 10:43:29 2004

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