[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.
---------------------------+------------------------------------------------
   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   |  
---------------------------+------------------------------------------------
 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>
FDO <http://fdo.osgeo.org/>
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