In the Query api, I can specify a subset of columns that I would like
returned as part of my query. It would be useful if I could pass in a list
of transform definitions or expressions and have the underlying database
execute the transformations. This would be similar to a SQL projection
such as
'select concat('id', 'name') as newname, buffer(the_geom, 0.1) as bufgeom
from mygeomtable where within(the_geom, polygonWKT)'
Is there a simple way to do this sort of thing that I have overlooked?
I've been digging around in the Query api and the Transform process code to
see if this is possible. I need a way to send the list of transform
definitions to the underlying DataStore (in this case GeoMesa) so that it
can execute the transformation in an optimal way. In the GeoMesa case, we
would be able to leverage distributed parallel processing to compute an
computationally expensive transformation.
If there isn't a simple way, is there a workaround that is recommended?
Thanks,
Anthony
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