c# - Using a POCO in MongoDB and Entity framework with spatial indexes -

there couple classes in external library have coordinate property needs stores in mongodb , in sql server, ideally spatial indexes, without having modify class.

mongodb has no problem creating geospatial spherical index on coordinate property following code:

var collection = _database.getcollection<someclass>("somecollection") collection.createindex(indexkeys<someclass>.geospatialspherical(x => x.coordinate)); 

according documentation create geojson point under covers. can query object such:

var point = geojson.point(geojson.geographic(coordinate.longitude, coordinate.latitude)); var geoclause = query<someclass>.near(x => x.coordinate, point, distance); return collection.asqueryable().where(x => geoclause.inject()) 

with sql server , ef, however, dbgeography property needed spacial index.

what nice if there's extension point mappings object sql data type in ef, google search returned nothing of like. such thing exist?

i thought generic wrapper class, ef doesn't support generics that's not option either, , don't want create wrapper every class.

is option extend classes?