On Dec 18, 2009, at 8:45 PM, Kevin Ar18 wrote:
> it really is that - simultaneous transactions are isolated from one another,
> and their results are only made visible to other transactions after they're
> committed. as far as locking, you generally choose between an "optimistic"
> and a "pe
nevermind :(
poet.__dict__.pop('poems')
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it really is that - simultaneous transactions are isolated from one another,
and their results are only made visible to other transactions after they're
committed. as far as locking, you generally choose between an "optimistic"
and a "pessimistic" approach:
Thanks.
Ok, so I found an article
How do I detach or unload the data from a relation on an instance?
I'm writing a thin layer on top of SA for caching and need to do
serialization. The following happens when serializing:
poet = session.query(Poet).find_by(name='Haafez').one()
pickle.dumps(poet) # Only serializes the Poet object
@michael: changed to after_commit
@ivan:
Sorry for the late reply. Here's a decent example. I have this
working in production error free, but it's hardly done. Note, the
code below is a specific example. Let me know if you have questions
from sqlalchemy import orm
def get_session_id(session)
On 2009-12-18 20:50, AF wrote:
> Hello,
>
> I've become quite used to SQLAlchemy's Declarative style notation for
> defining data to be stored in SQL.
>
> Does anyone know of library that will do something similar for simple
> XML?
>
> Basically I need objects (and attributed collections of objects
Hello,
I've become quite used to SQLAlchemy's Declarative style notation for
defining data to be stored in SQL.
Does anyone know of library that will do something similar for simple
XML?
Basically I need objects (and attributed collections of objects) that
are effectively records for groups of s
Thanks a lot for the suggestions, I will give it a much closer look
now...
Lynton
On Dec 18, 7:19 pm, "Michael Bayer" wrote:
> Lynton Grice wrote:
> > Hi there,
>
> > I am writing a little persistant Queue class/s using sqlalchemy and
> > sqlite. All is going fine with the development but now I
Lynton Grice wrote:
> Hi there,
>
> I am writing a little persistant Queue class/s using sqlalchemy and
> sqlite. All is going fine with the development but now I have reached
> the stage where I would like to have each request spawned as a new
> process (from Python's muliprocessing module).
The
> Does anyone have any idea how I can get around this Pickling error?
Different ways to make your class picklable are described here:
http://docs.python.org/library/pickle.html#pickling-and-unpickling-normal-class-instances
You could for example write __getstate__ and __setstate__ methods such
t
Hi there,
I am writing a little persistant Queue class/s using sqlalchemy and
sqlite. All is going fine with the development but now I have reached
the stage where I would like to have each request spawned as a new
process (from Python's muliprocessing module).
The error I am getting is: "Can't p
resolved... it was a bug in psycopg2.
Julien Cigar wrote:
> Dear SQLAlchemists,
>
> I have a small problem with psycopg2, nothing do to with SQLAlchemy
> but.. I didn't find any other appropriate mailing list..
>
> The problem is that I can't access columns by key with DictCursor() as
> cursor
Dear SQLAlchemists,
I have a small problem with psycopg2, nothing do to with SQLAlchemy
but.. I didn't find any other appropriate mailing list..
The problem is that I can't access columns by key with DictCursor() as
cursor_factory and server side cursors ..
Here is a concrete example : http://
> its true, the dialect was never written for ASE. It also hasn't been used
> by anyone I'm aware of since the original author submitted it against version
> 0.3 of SQLA. I'm surprised its usable at all at this point.
>
> If you'd like to help us with a real Sybase dialect, it would be targete
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