[Fdo-trac] [fdo-trac] #834: Export layer data to SQLite becomes too slow

[FDO]

#834: Export layer data to SQLite becomes too slow
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   Reporter:  wyylling         |       Owner:  Ying Wang
       Type:  defect           |      Status:  new      
   Priority:  major            |   Milestone:  3.7.0    
  Component:  SQLite Provider  |     Version:  3.7.0    
   Severity:  3                |    Keywords:           
External_id:  1449749.02       |  
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 1. Take the standard WW dump (TB_WW.dump also attached) and import it with
 TB2011
 2. Generate graphic with the standard display model (also attached)
 3. In Display manager select WW_Line with the right mouse taste and choose
 "Export Layer Data to SQLite..."
 4. After 2 seconds, the sqlite file is created.
 5. Take the same dump and import it with Map 2012 (inclusive structure
 updates)
 6. Generate graphic with the standard display model (also attached)
 7. In Display manager select WW_Line with the right mouse taste and choose
 "Export Layer Data to SQLite..."

 Result:
 After 20 seconds the sqlite file is created.
 This is 10 times the time that was used with TB 2011

 Expected result:
 The SQLite file should be created after 2 seconds.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/834>
FDO <http://fdo.osgeo.org/>
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