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use of cx_oracle adapter from within python script ?

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banaouas.medialog at wanadoo

Nov 16, 2007, 7:15 AM

Post #1 of 4 (2541 views)
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use of cx_oracle adapter from within python script ?

Hi,
I know there is many restrictions when writing python scripts.
But is it possible to access to oracle (import cx_Oracle) from python
script, avoiding to build a ZSQL method for each different query ?
An other reason to do so is the relative complexity of some oracles queries
(package, stored procedure, cursor, ...) , witch are difficult (impossible
?) to implement into ZSQL.

thanks.

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dieter at handshake

Nov 16, 2007, 10:39 AM

Post #2 of 4 (2430 views)
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Re: use of cx_oracle adapter from within python script ? [In reply to]

banaouas wrote at 2007-11-16 07:15 -0800:
>I know there is many restrictions when writing python scripts.

Only "Script (Python)" and derived classes are restricted.

Python in normal Python modules/packages or "External Method"s are
not restricted.

>But is it possible to access to oracle (import cx_Oracle) from python
>script, avoiding to build a ZSQL method for each different query ?

I doubt that this will be able with "Script (Python)" alone.

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banaouas.medialog at wanadoo

Nov 16, 2007, 2:49 PM

Post #3 of 4 (2436 views)
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Re: use of cx_oracle adapter from within python script ? [In reply to]

In external method, it's not possible to use the database connexion created
in the zmi.
This connexion maintain a pool of connexions to database, thus reducing the
query execution time.

I wonder if from inside a new product it's possible to access to an already
existing database connexion ?

Dieter Maurer wrote:
>
> banaouas wrote at 2007-11-16 07:15 -0800:
>>I know there is many restrictions when writing python scripts.
>
> Only "Script (Python)" and derived classes are restricted.
>
> Python in normal Python modules/packages or "External Method"s are
> not restricted.
>
>>But is it possible to access to oracle (import cx_Oracle) from python
>>script, avoiding to build a ZSQL method for each different query ?
>
> I doubt that this will be able with "Script (Python)" alone.
>
>
>
> --
> Dieter
> _______________________________________________
> Zope-DB mailing list
> Zope-DB[at]zope.org
> http://mail.zope.org/mailman/listinfo/zope-db
>
>

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maciej.wisniowski at coig

Nov 16, 2007, 3:26 PM

Post #4 of 4 (2439 views)
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Re: use of cx_oracle adapter from within python script ? [In reply to]

banaouas pisze:
> In external method, it's not possible to use the database connexion
created
> in the zmi.
Why? It is possible. I think if you take a look into zope-db archives
you'll even find some examples, eg:

http://www.nabble.com/Re:-RE-:-How-lunch-SQL-request-from-python-script---t3039608.html

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