[fdo-trac] #309: Add two additional IFeatureReader properties: Count and IsEmpty

[FDO]

#309: Add two additional IFeatureReader properties: Count and IsEmpty
---------------------------+------------------------------------------------
   Reporter:  MaksimS      |       Owner:  gregboone
       Type:  enhancement  |      Status:  new      
   Priority:  minor        |   Milestone:  3.4.0    
  Component:  FDO API      |     Version:  3.2.0    
   Severity:  3            |    Keywords:           
External_id:               |  
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 IFeatureReader should expose two additional readonly properties:

 1) Count - returning total number of feature instances found within
 IFeatureReader. It actually creates an internal copy of a reader and
 traverses it to get the result, while original reader object stays intact.

 2) IsEmpty - returns True if reader has no feature instances in it, False
 otherwise.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/309>
FDO <http://fdo.osgeo.org/>
Feature Data Objects