Andrea Aime wrote:
Justin Deoliveira ha scritto:
Hi all,
I am working on creating a new sql encoder for postgis based on geoapi
interfaces only. I would like to maintain all the behavior of the old
encoder as well. One thing I have come across that is puzzling me is
encoding of a "Disjoint" filter.
Instead of calling the "Disjoint" postgis function like many of the
other spatial filters do, it calls "NOT( intersects".
(SQLEncoderPostgis, line 317) Cory, svn blame points to you :).
20963 chorner out.write("NOT (intersects");
Indeed a user complained about the low performance of this operation
on Oracle as well. He said RedSpider uses disjoint directly and gets
performance that's orders of magnitude faster.
The tough thing on Oracle is I've also had users report that it's not
exactly right, according to OGC definition of terms. Like it would
probably fail cite tests. So we've gone back and forth on which we
should do. I'm fine with the faster one, and indeed perhaps oracle
fixed it to work right...
Chris
Cheers
Andrea
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