Dear DBI developers,

I've been doing some more work on the long data type support in 
DBD::Ingres (which unfortunately still hasn't managed to make it into the 
official distribution), and now have support for the Ingres byte and
long byte binary data types as well.

I have a question about long data types though, which hasn't been 
resolved by checking other DBD drivers, as they all seem to do things 
differently.

Is it preferable to support LongReadLen and LongTruncOk, or just to return
the entire field?  To be honest, in my own work I never have a need for
limiting the length, and it seems ludicrous to make the user guess what
the largest size data is if you can just return the whole lot anyway by
allocating memory dynamically.

Maybe there needs to be a sentinel value (-1?) for LongReadLen to indicate
fetching everything?

At the moment I have two versions of DBD::Ingres in development, one which
supports the Long* settings exactly as per the DBI pod, and one which ignores
them entirely and always returns the complete data.

Any hints about the correct way to deal with long values would be 
appreciated.  I consider it essential to allow the programmer to fetch all 
the data without having to guess at the size.

Henrik: if you read this and you ever get time to look at my long
data type stuff, drop me a line first so I can zap you the most recent 
version.

Cheers,

 - Mike Battersby

-- 
Mike Battersby <[EMAIL PROTECTED]>        The University of Melbourne
Fetch my pgp key from: http://ariel.ucs.unimelb.edu.au/~mib/pgpkey.txt


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