[ZODB-Dev] Typechecking oid in getitem

[Jeremy Hylton]

On Mon, 2003-05-19 at 11:22, Christian Reis wrote:
> On Mon, May 19, 2003 at 10:59:28AM -0400, Jeremy Hylton wrote:
> > The type of an oid depends on the storage, so there is no guarantee that
> > it will be a string.  In fact, ZODB4 storages will soon change to using
> > Python longs.  APE uses tuples IIRC.
> 
> Hmmm. So would the correct fix be to implement API so the storage can
> inform what type the OID should be? I could implement something like:
> 
>     storage.getOIDType()
> 
> that returned a TypeObject. Are other storage authors against this
> change? It would make sanity checking easier AFAICT. 

I'm not all that keen on adding safety belts to catch these errors.  It
just doesn't seem Pythonic.

Do you know what you got a TypeError unsliceable object in the original
error report?  Maybe it's possible to fix the storage so that it raises
a more useful error message.

Jeremy