[fdo-trac] #290: ODBC driver: significant performance improvement on selecting geometries

[FDO]

#290: ODBC driver: significant performance improvement on selecting geometries
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   Reporter:  danstoica      |       Owner:  danstoica
       Type:  enhancement    |      Status:  new      
   Priority:  major          |   Milestone:  3.3.1    
  Component:  ODBC Provider  |     Version:  3.2.0    
   Severity:  3              |    Keywords:           
External_id:  1041996        |  
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 ODBCDR: Currently the geometries are retrieved as BLOBs ("image"), using
 the specialized  ODBCGetData(). This approach is slow, about 2000
 geometries/sec.

 During the implementation of the SQLServerSpatial provider (against MS SQL
 Server 2008) a hybrid technique for retrieving the geometries has been
 developed and tested, allowing a performance boost of about 10 times.
 Ported this enhancement to ODBCDR.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/290>
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