[Fdo-trac] [fdo-trac] #849: Spatial filter enhancement of Odbc provider.
FDO
trac_fdo at osgeo.org
Tue Sep 18 19:42:24 PDT 2012
#849: Spatial filter enhancement of Odbc provider.
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Reporter: zhanga | Owner: gregboone
Type: enhancement | Status: new
Priority: major | Milestone: 3.6.0
Component: FDO API | Version: 3.6.0
Severity: 3 | Keywords:
External_id: 1468146.01 |
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When there is a spatial filter, Fdo Odbc provider just uses the envelope
of the filter. It generates a SQL where clause like (X > minX and X <
maxX) and (Y > minY and Y <maxY) to filter the features. If we are using
complex spatial filter such as circle or triangle, some features that are
not in the filter (but in the envelope) will be selected.
We need to add a secondary filter to handle complex spatial filters.
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Ticket URL: <http://trac.osgeo.org/fdo/ticket/849>
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