[fdo-trac] #43: SHP, SDF: wrong results when quering multi polygons

[FDO]

#43: SHP, SDF: wrong results when quering multi polygons
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   Reporter:  danstoica     |       Owner:  danstoica
       Type:  defect        |      Status:  new      
   Priority:  major         |   Milestone:  3.3.0    
  Component:  SHP Provider  |     Version:  3.2.0    
   Severity:  3             |    Keywords:           
External_id:                |  
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 A decision was previosly made to not alter the polygon returned from a shp
 file.
 As a result when reading, SHP provider never returns a MultiPolygon. They
 are
 all Polygons.

 In consequence, when doing spatial queries on a Polygon (which is in fact
 a
 multipolygon) and the selected area in not inside the external ring or
 touching
 the ring's boundary, nothing will be returned.

 The solution was fix the spatial query (not the reading). That is, before
 passing the geometry to the spatial filter, the Polygon needs to be
 checked and
 see "Is this polygon actually a multipolygon?" If so, create a
 multipolygon and
 pass it down to the spatial filter instead.

 The same applies to the SDF provider.

-- 
Ticket URL: <http://trac.osgeo.org/fdo/ticket/43>
FDO <http://fdo.osgeo.org/>
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