[fdo-trac] #613: SDF: Handle read-only files and default values

[FDO]

#613: SDF: Handle read-only files and default values
--------------------------------+-------------------------------------------
   Reporter:  romicadascalescu  |       Owner:  romicadascalescu
       Type:  defect            |      Status:  new             
   Priority:  major             |   Milestone:  3.5.0           
  Component:  SDF Provider      |     Version:  3.5.0           
   Severity:  4                 |    Keywords:                  
External_id:                    |  
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 - Handle read-only files: in case we connect to a read only file avoid
 altering
 READONLY connection flag.
  - Make consistent default read-only flag (was false) from the connection
 with
 read-only flag from connection parameter (was true). I've made them all
 false.
  - Handle default values, by setting values to the property in case the
 property
 is not set and it has a default value provider will set the default value.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/613>
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