Re: Taking trace () to the next level ...

On Thu, 21 Aug 2008 13:24:08 +0100, "Martin J. Evans"
<[email protected]> wrote:

> H.Merijn Brand wrote:
> 
> <snipped most of this email - I'm on holiday at the moment so will wait 
> until next week to comment but I knew the answer to one question>
> 
> >  DBD::ODBC - Only supports one trace flag odbcdev    - flag is used to
> >  output development tracing so it should not be relevant in normal
> >  use. DBD::ODBC outputs tracing at levels 3 and above (as levels 1 and
> >  2 are reserved for DBI).
> >
> >  Where is it stated that levels 1 and 2 are DBI only?
> >
> http://search.cpan.org/~timb/DBI-1.607/lib/DBI/DBD.pm
> 
> Make use of this as often as you can, but don't output anything at a 
> trace level less than 3. Levels 1 and 2 are reserved for the *DBI*.

That sentence was added with DBI-1.42. Most DBD's were written before
that version, and the authors probably never saw it. I started coding
my DBD with DBI-1.08 or so.

DBI-1.41 still documented it as
--8<---
That's the first time we see how debug/trace logging works within a DBI
driver.  Make use of this as often as you can!
-->8---

> BTW, I've only replied to dbi-dev as it looked like all of the cc list 
> are on it and I don't like getting every posting twice.

-- 
H.Merijn Brand          Amsterdam Perl Mongers  http://amsterdam.pm.org/
using & porting perl 5.6.2, 5.8.x, 5.10.x, 5.11.x on HP-UX 10.20, 11.00,
11.11, 11.23, and 11.31, SuSE 10.1, 10.2, and 10.3, AIX 5.2, and Cygwin.
http://mirrors.develooper.com/hpux/           http://www.test-smoke.org/
http://qa.perl.org      http://www.goldmark.org/jeff/stupid-disclaimers/