[Zope-DB] ZOracleDA 2.x behavior change? / TypeError: len()
of unsized object
Matthew T. Kromer
Thu, 05 Dec 2002 16:43:41 -0500
Chris Beaumont wrote:
> I have been moving a Zope 2.2x website that used the older
> DCOracle/ZOracleDA to a new copy of Zope (2.5.1) that is using
> DCOracle2/ZOracleDA 2.x - and have noticed that some ZSQL methods that
> use the dtml-in tag seem to throw a "TypeError: len() of unsized
> object" error when they do not have results when I am using the new
> database adaptor.
> This is a big problem for me because I often use the presence or
> absence of results to perform some test using a dtml-in or dtml-if.
> I am pretty sure that I am using valid DTML. Is this an FAQ or is
> there something I need to change?
> Thank you,
The DA *should* behave consistently and return () (an empty tuple or
list) when no results are found. If you have an example data set that
raises this error I can try to reproduce the problem.
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