Hi all,
This might be a bit of a stretch but here it goes:
Say that i have a lambda function that takes a mapped object and teturns
whether it is valid; e.g:
lambda person: person.age 17 or person.length 1.75
is it possible to use this method to perform an sqla query on the database?
On Aug 26, 2013, at 11:14 AM, lars van gemerden l...@rational-it.com wrote:
Hi all,
This might be a bit of a stretch but here it goes:
Say that i have a lambda function that takes a mapped object and teturns
whether it is valid; e.g:
lambda person: person.age 17 or person.length
On Aug 23, 2013, at 6:34 PM, jason kirtland j...@discorporate.us wrote:
The patch seems like surprising Python behavior to me. Traversing across a
None is almost certainly a bug in regular code, and quashing that error by
default feels dangerous. I would want this to raise by default (and
Hi Michael,
So just to be sure, if i understand correctly and i have:
func = lambda person: person.age 17 or person.length 1.75
I can do:
class Person(Base):
#
@hybrid_method
def run_filter(self, fn):
return fn(self)
On 26 Aug 2013, at 19:15, lars van gemerden l...@rational-it.com wrote:
On Monday, August 26, 2013 5:23:07 PM UTC+2, Michael Bayer wrote:
On Aug 26, 2013, at 11:14 AM, lars van gemerden la...@rational-it.com wrote:
Hi all,
This might be a bit of a stretch but here it goes:
Say that
oh , the or won't work as a hybrid, you either need to use the binary op | or
otherwise run through some filter that will give you expression vs. local
behavior.
On Aug 26, 2013, at 2:15 PM, lars van gemerden l...@rational-it.com wrote:
Hi Michael,
So just to be sure, if i understand
Hmm, too bad. I do have the lambda methods in string form so i'll probably
have to write a parser and construct the query with unions and intersects
(or filter(A.b 1, A.c0) like calls instead of intersects).
No how did writing a parser tree go |-)?
CL
On Monday, August 26, 2013 8:27:16 PM
Hey there,
I have already posted this on
stackoverflowhttp://stackoverflow.com/questions/18304212/how-do-i-create-a-one-to-many-relationship-with-a-default-one-to-one-property-fobut
not recieved an answer yet so I thought I might try here. To quote from
my original question:
Suppose we have
The problem with using Mixins is that you need to know the definition of
columns already for creating the mixin class. What I am trying to do is
more like get the definition dynamically on the fly.Take a look at this:
def get_properties(tablename, map):
table_inspector =
Sorry, it should've been:
class Enum_Sample(Base):
Typo.
On Mon, Aug 26, 2013 at 4:35 PM, Praveen praveen.venk...@gmail.com wrote:
The problem with using Mixins is that you need to know the definition of
columns already for creating the mixin class. What I am trying to do is
more like get
On Aug 26, 2013, at 4:35 PM, Praveen praveen.venk...@gmail.com wrote:
The problem with using Mixins is that you need to know the definition of
columns already for creating the mixin class. What I am trying to do is more
like get the definition dynamically on the fly.Take a look at this:
On Aug 26, 2013, at 5:16 PM, Michael Bayer mike...@zzzcomputing.com wrote:
On Aug 26, 2013, at 4:35 PM, Praveen praveen.venk...@gmail.com wrote:
The problem with using Mixins is that you need to know the definition of
columns already for creating the mixin class. What I am trying to do
OK here we are, had to switch approaches due to a bug with the column reflect
event, to use the aforementioned __mapper_cls__ (had the name wrong), so I
think you'll see this is a pretty open-ended way to control how something maps
as you're given total access to mapper() here:
from sqlalchemy
Does this work in sqlalchemy 0.6.1 ?
On Mon, Aug 26, 2013 at 5:36 PM, Michael Bayer mike...@zzzcomputing.comwrote:
OK here we are, had to switch approaches due to a bug with the column
reflect event, to use the aforementioned __mapper_cls__ (had the name
wrong), so I think you'll see this is
I am getting ImportError for the following:
from sqlalchemy.ext.declarative import DeferredReflection
from sqlalchemy import event
I use sqlalchemy 0.6.1. Is there any way I can make it work in 0.6.1 ?
On Mon, Aug 26, 2013 at 5:38 PM, Praveen praveen.venk...@gmail.com wrote:
Does this work
you'd need to hand-roll the deferred reflection part, there's an example in 0.7
called declarative_reflection but it might require features that aren't in
0.6.
I'd not be looking to add any kind of slick/magic systems to an 0.6 app, 0.6 is
very early in the curve for declarative techniques.
Could you please point me to the link where I can find the example ?
On Mon, Aug 26, 2013 at 5:41 PM, Michael Bayer mike...@zzzcomputing.comwrote:
you'd need to hand-roll the deferred reflection part, there's an example
in 0.7 called declarative_reflection but it might require features that
nvm... i found it.
On Mon, Aug 26, 2013 at 5:46 PM, Praveen praveen.venk...@gmail.com wrote:
Could you please point me to the link where I can find the example ?
On Mon, Aug 26, 2013 at 5:41 PM, Michael Bayer
mike...@zzzcomputing.comwrote:
you'd need to hand-roll the deferred reflection
On Aug 26, 2013, at 3:43 PM, Florian Rüchel florian.ruec...@gmail.com wrote:
Hey there,
I have already posted this on stackoverflow but not recieved an answer yet so
I thought I might try here. To quote from my original question:
I've seen it, and the issue is that the question is
I tried your example in sqlalchemy 0.6 by manually plugging in api.py
library (attached) that I got from
herehttps://bitbucket.org/miracle2k/sqlalchemy/src/2d28ed97d3221a133b4b297a229deb294088affe/lib/sqlalchemy/ext/declarative/api.py?at=default
.
I get this error:
File path\to\sample_orm.py,
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