Filter processing (GetFeature) needs to be aware of GML transformations.

[sdlime]

The filter processing code needs to be aware of the various transformations 
used to produce XML schema and GML documents. For example, if I rename a column 
from 'foo' to 'bar' then users of the service would expect to be able to query 
on the attribute 'bar'. We need a function to reverse the mapping. Should be 
easy enough to write but needs to be integrated into the filter parsing and 
expression building code.

Steve

[assefa]

closing bug #2580 similar to this .