[postgis-devel] [PostGIS] #924: GEOMETRYCOLLECTION(EMPTY) breaking change

[PostGIS]

#924: GEOMETRYCOLLECTION(EMPTY) breaking change
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 Reporter:  robe     |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
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 This is a related ticket to #923.

 As Mike noted, we broke backwards compatibility with

 GEOMETRYCOLLECTION(EMPTY).

 -- this used to be legal in PostGIS 1.5 and below but in 2.0 now throws
 and error
 SELECt ST_IsEmpty('GEOMETRYCOLLECTION(EMPTY)'::geometry);

 -- FWIW GEOMETRYCOLLECTION(EMPTY) is illegal in SQL Server as well and
 GEOMETRYCOLLECTION EMPTY works fine.

 Is this an intentional break or an accidental one?  If so as Mike states
 we should document that as a break.  Not sure if it really affects anybody
 though.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/924>
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