Unfortunately, I posted the wrong version of my Itemtype class above;
fortunately it wasn't important for what I was trying to show. Please
replace class Itemtype with the following, and note the additional
test lines and commentary which I also forgot to include.
class Itemtype(object):
Well! I guess that's exactly why we post sometimes -- the process of
producing the test case bumps the unconscious forward a few steps. I
quit and did some pleasure reading for a while then came back. Here's
my own answer that does exactly what I needed it to do.
Add the following property on
I don't know if is better to use the psycopg adapter.
Can i use the funct.* function only as adapter?
example:
In [1]: aa = [1,2,3,4,]
In [2]: print sa.func.in_( *aa )
in(:in, :in_1, :in_2, :in_3)
how to obtain this?
in ( 1,2,3,4 )
thank you
Glauco
--
Arghh. Accidentally hitting 'Tab' in google groups takes you to the
'Send' button, then your next spacebar press prematurely sends your
post.
Ok, add the following property on Itemtype:
@property
def full_heritage(self):
result = self.inherits[:]
if result:
for inherited in
Eric
i'm not sure i follow all your mapping setup as it's too detail. but:
i've been battling along similar data/feature inheritance+shading
stuff along a branchy, recursive directed graph (not a pure tree as
it has alternative short-cut paths in it), all over bitemporal
objects and values
How would I unmap a class ( so that I can map it to another table from
a parallel but distinct DB) ?
I can't seem to find the documentation for the Mapper object itself.
I may be going the wrong way about it.
I want to map the same class to tables in different databases at
different times.
Glauco wrote:
I don't know if is better to use the psycopg adapter.
Can i use the funct.* function only as adapter?
example:
In [1]: aa = [1,2,3,4,]
In [2]: print sa.func.in_( *aa )
in(:in, :in_1, :in_2, :in_3)
how to obtain this?
in ( 1,2,3,4 )
perhaps you're looking for
Moshe C. wrote:
How would I unmap a class ( so that I can map it to another table from
a parallel but distinct DB) ?
I can't seem to find the documentation for the Mapper object itself.
I may be going the wrong way about it.
I want to map the same class to tables in different databases at
Hello,
Thanks for your suggestion. I wanted to ask one more thing.
I am using Sqlite with SQLA. Its a multi threaded application, but each
thread gets its own session/engine. But, since it is Sqlite, isn't there
just only one connection?
Adding a Pool Listener, will make extra function calls
Michael Bayer ha scritto:
Glauco wrote:
I don't know if is better to use the psycopg adapter.
Can i use the funct.* function only as adapter?
example:
In [1]: aa = [1,2,3,4,]
In [2]: print sa.func.in_( *aa )
in(:in, :in_1, :in_2, :in_3)
how to obtain this?
in ( 1,2,3,4 )
Harish Vishwanath wrote:
Hello,
Thanks for your suggestion. I wanted to ask one more thing.
I am using Sqlite with SQLA. Its a multi threaded application, but each
thread gets its own session/engine. But, since it is Sqlite, isn't there
just only one connection?
sqlite very much wants
from sqlalchemy import *
aa = [1,2,3,4]
print func.in_(*[literal_column(str(x)) for x in aa])
in(1, 2, 3, 4)
this is what you asked for ?
Glauco wrote:
Michael Bayer ha scritto:
Glauco wrote:
I don't know if is better to use the psycopg adapter.
Can i use the funct.* function only
Michael Bayer ha scritto:
from sqlalchemy import *
aa = [1,2,3,4]
print func.in_(*[literal_column(str(x)) for x in aa])
in(1, 2, 3, 4)
this is what you asked for ?
Yess! well done !
I'm using the sa.func.literal_column instead of sa.literal_column...
Thank you one more
What I don't like about my own solution, after all (see my 3rd post on
this thread, after the accidental 2nd one prematurely submitted), is
that it recursively traverses the Itemtype graph to make a list of
itemtypes to constrain the scope of a request for the list of features
upon which a given
Svil,
Thanks for your reply. I have been following your posts with interest
over the past half year (or I thought even longer). At first I
thought you were crazy. But now I've found myself creating a model of
similar complexity, as necessary to express the domain I'm working on.
The purpose
Thanks.
I do not want to clear all maps, in order not to have to remap some
classes that don't change.
I think (3) answers my needs. I have an app. which has a mode which
tells it with which of 2 DBs (with same schema) it is working . This
mode is not changed often.
If I understood this
Thanks for your reply. I have been following your posts with
interest over the past half year (or I thought even longer). At
first I thought you were crazy. But now I've found myself creating
a model of similar complexity, as necessary to express the domain
I'm working on.
i think you're
Yes, I am very glad to be free of multiversion and bitemporal
concerns, although I will eventually be setting this up for partial
multimaster asynchronous replication (but with a lot of intentional
compromises in order to avoid the major, currently unsolved, problems
with that entire field).
As
The ScopedSession class has no bind_table method.
Is there a way to get at a Session object from ScopedSession object?
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sure just call it, session = ScopedSession()
On Nov 25, 2008, at 6:41 PM, Moshe C. wrote:
The ScopedSession class has no bind_table method.
Is there a way to get at a Session object from ScopedSession object?
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Eric, a friendly comment: you do sound as crazy as Svil :-)
Eric
2008/11/25, Eric Ongerth [EMAIL PROTECTED]:
Yes, I am very glad to be free of multiversion and bitemporal
concerns, although I will eventually be setting this up for partial
multimaster asynchronous replication (but with a lot
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