Processors for Columns to extract and populate data in data store column...

...s
Good point. The existing Extractors and populators are based on FieldData. Given out memory and GC evaluation, I am trying to get rid of Field data and corresponding classes and replace them with Field and Processor. The advantage of using Field and Processors is 

a) We only need them to use them once when we do DB access
b) If we want, we can drop them from production code and use them only for testing.

Once we get all these in, I'll then check in the InMemory table and then change all existing FieldData based DataObjects to used Simple Java objects instead just like FlightData