I'm trying to get a series of datetimes using func.datetime. The format of
input is func.datetime(basetime, '+ NNN seconds'), which works nicely if
the shift applied is constant. However I need to add 10, 20, 30 seconds,
etc to this base time. So I want something like func.datetime(basetime,
Is it possible to remove mapper events? Specifically I want to call
event.remove(mapper, 'mapper_configured', fn) but I get an error back
saying Mapper is not iterable.
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I'm writing an application that uses kivy for GUI and sqlalchemy for ORM.
Each has its own instrumentation system, and I initially planned to connect
them by 1) mirroring relevant SA attributes in kivy at init, 2) work with
only the kivy versions of the attributes for the duration of the app,
= relationship('AB',
collection_class=attribute_mapped_collection('a')
)
@event.listens_for(A.ab, append)
def append(target, value, initiator):
value.b.ab[value.a] = value
On Jul 8, 2013, at 9:07 PM, Greg Yang sorcer...@gmail.com javascript
I created a class CorrelatedProxy inheriting from AssociationProxy that
allows the creator function to depend on the owner instance of the
association proxy. Essentially it gets a attribute 'correlator' of the
something like lambda x: lambda y, z: Constructor(x, y, z), and then
intercepts the
).options(joinedload(children)):
for b in beta.children:
assert b.id == beta.id
assert b.a_re in beta.a_re.children
On Jun 11, 2013, at 6:34 PM, Greg Yang sorcer...@gmail.com javascript:
wrote:
How would you use proxies? I can get B.a_re.children.b_re, but this
includes
Consider these 2 mapped classes
from sqlalchemy.engine import create_engine
from sqlalchemy.ext.associationproxy import association_proxy
from sqlalchemy.ext.declarative.api import declarative_base
from sqlalchemy.orm import relationship
from sqlalchemy.orm.session import sessionmaker
from
, that represents all the intermediary rows. Might
work, might not, would have to spend a few hours with it.
Is there a reason you can't just route to the related B.a.children.bsusing
proxies? Or a @property based loader?
On Jun 11, 2013, at 4:45 PM, Greg Yang sorcer...@gmail.com
Right now query.order_by(composite) gives a sqlite3 operational error,
because the rendered SQL is ORDER BY (composite_val1, composite_val2,
composite_val3) instead of ORDER BY composite_val1, composite_val2,
composite_val3. (The parenthesis is causing an error)
For example, consider the code
Awesome! The changes should be able to cover the issue.
On Saturday, June 8, 2013 12:40:51 PM UTC-5, Michael Bayer wrote:
On Jun 8, 2013, at 1:33 AM, Greg Yang sorcer...@gmail.com javascript:
wrote:
if __name__ == '__main__':
engine = create_engine('sqlite:///:memory
Right now a filter clause AssociationProxy == None
Consider the following code:
from sqlalchemy.engine import create_engine
from sqlalchemy.ext.associationproxy import association_proxy
from sqlalchemy.ext.declarative.api import declarative_base
from sqlalchemy.orm import relationship
from
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