Getting Postgresql booleans as integers

I'm using Postgresql 7.4.6 with it's supplied jdbc driver with the 
Wonder project plugin.
My eomodel is using EOJDBCPrototypes for all field types.
Booleans are setup as suggested -
             allowsNull = Y;
             columnName = "";
             externalType = bool;
             name = boolean;
             valueClassName = NSNumber;
             valueType = c;
The classes were generated with eogenerator.

Everything I've found so far says that the above configuration should 
work...  and yet I keep getting ClassCastExceptions on the booleans.

So, I switched my prototype for booleans to a internal data type of 
'String'.
No more exceptions...
And no wonder I was getting exceptions.  The return value for booleans 
is 't'.  Which is fine for Postgresql, which apparently could return 
any value from '1', 'y', 'TRUE', 'true', 't' for true (matching values 
for false).
ermm... GREAT.  just great.


SO...
This was built using FrontBase, which seems to return booleans for all 
booleans.
To keep the code changes as minimal as possible, what would you suggest 
to fix this boolean inconsistency?
Does the plugin  handle this type of problem?  Is the Driver supposed 
to handle this?
Should I change the eogenerator created classes so all Boolean methods 
check what the actual value is ('t', 'TRUE', 1 etc.) and return a 
Numeric 1/0 (which is what EOModeler and eogenerator wants to do by 
default anyway)?  This would actually involve changing the eogenerator 
templates as it is run every time the project is built in order to keep 
all the classes consistent with the eomodel file.

I REALLY don't want to have to have every single Boolean (Number) 
method changed in order to fix this inconsistency between FrontBase and 
Postgresql.  I'm really looking for something that could be sub-classed 
or over ridden and just change the way these are handled at the lowest 
level so that ALL booleans from the database (and from the app to the 
database) are the same.

Any suggestions would be very helpful.

sim