[postgis-devel] [PostGIS] #673: Add support for typed empty geometries

[PostGIS]

#673: Add support for typed empty geometries
---------------------+------------------------------------------------------
 Reporter:  strk     |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
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 GEOS supports typed empty geometries.
 Postgis doesn't.
 For ST_SharedPaths it might be nice to have it, as GEOS
 would return a COLLECTION with 2 MULTILINESTRING elements,
 both possibly empty. So this would be a valid, and defined result:

 {{{
  COLLECTION(MULTILINESTRING EMPTY, MULTILINESTRING EMPTY)
 }}}

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/673>
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