Re: [python-sybase] Working on the next release

[Dave C. <dj...@ob...>]

>>>>> "Dave" == Dave Cole <dj...@ob...> writes:

Dave> Now all I have to do is implement cs_config() in the extension
Dave> module and convert Sybase.py module to used callback error
Dave> handling.

Slow but steady progress...

I have implemented the cs_config() method for CS_CONTEXT objects.  I
then realised that a whole class of errors were never reaching the
outside (Python) world due to my use of an internal CS_CONTEXT for
doing numeric conversions (among other things).  I decided to fix this
up by placing the creation of the internal CS_CONTEXT under the
control of Python code.

The following is a test program which shows the new features.

- - bugger.py - - - - - - - - - - - - - - - - - - - - - - - - - - -
from sybasect import *

def cslib_cb(ctx, msg):
    print 'cslib_cb:'
    print '  severity ', msg.severity
    print '  msgnumber', msg.msgnumber
    print '  msgstring', msg.msgstring
    print '  osnumber ', msg.osnumber
    print '  osstring ', msg.osstring
    print '  status   ', msg.status
    print '  sqlstate ', msg.sqlstate
    raise ValueError('bugger!')

status, ctx = cs_ctx_alloc(CS_VERSION_110)
set_global_ctx(ctx)
ctx.cs_config(CS_SET, CS_MESSAGE_CB, cslib_cb)
numeric('12a')
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

When I run it this is what happens:

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
cslib_cb:
  severity  1
  msgnumber 33816856
  msgstring cs_convert: cslib user api layer: common library error: The conversion/operation was stopped due to a syntax error in the source field.
  osnumber  0
  osstring  
  status    1076857758
  sqlstate  ZZZZZ
Traceback (most recent call last):
  File "bugger.py", line 17, in ?
    numeric('12a')
  File "bugger.py", line 12, in cslib_cb
    raise ValueError('bugger!')
ValueError: bugger!
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Now I am finally ready to convert Sybase.py to callback error handling.

- Dave

-- 
http://www.object-craft.com.au