On Tue, Dec 04, 2007 at 05:38:08PM +0100, Romulo Goncalves wrote:
> >> !TypeException:user.str2qgrams[26]:'algebra.select' undefined in:
> >> sel:any := algebra.select(b:bat[:str,:void], _27:oid, id:oid)
> > ^^^^ ^^^ ^^^
> > MAL strict typing (void != oid)?
> > What does b's tail look like?
> > Is it VOID-NIL (i.e., with NIL seqbase) or non-materialized dense OID
> > ("VID") (i.e., with
> > non-NIL seqbase)?
> The problem was the bat creation I did
> # var b := bat(str,void,len+4);
> b := bat.new(:str,:void,len);
>
> and it should be:
> b := bat.new(:str,:oid,len);
> ^^^
well, depends what you want:
the first gives you non-materialized ("virtual") dense OIDs (once you set
the seqbase to some non-NIL OID value); the second gives you materialized
OIDs.
The above MIL code does the first;
I vaguely recall, though, that MAL does not (conveniently) allow to create a
VOID-NIL column and then turn it into a "VID" column by setting its seqbase;
possibly, MAL hence only allows to create VID columns as view using markH()
or markT() --- but not being a MAL expert, I'm more speculating than
knowing ...
Stefan
--
| Dr. Stefan Manegold | mailto:[EMAIL PROTECTED] |
| CWI, P.O.Box 94079 | http://www.cwi.nl/~manegold/ |
| 1090 GB Amsterdam | Tel.: +31 (20) 592-4212 |
| The Netherlands | Fax : +31 (20) 592-4312 |
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