Hello,
Given hierarchical data similar to:
http://www.sqlalchemy.org/docs/05/mappers.html?#adjacency-list-relationships
With out resorting to brute force recursive queries in my objects:
1) Is there any way to retrieve all a node's children / sub-children?
2) Is there a way to retrieve the lis
Thanks for looking into this. If it helps you any, this isn't an urgent
problem for me.
It isn't production code that is having this problem, and as you
mentioned I do have
an adequate workaround.
Michael Bayer wrote:
> refresh() isnt doing things the same as expire() does. which is not
> neces
Brad Wells wrote:
>
> Single table inheritance is broken in the given mapper creating
> function on the deprecation guide page. Returning the mapper corrects
> the issue.
>
> def session_mapper(scoped_session):
> def mapper(cls, *args, **kwargs):
> cls.query = scoped_session.query_prop
Jamie Bullock wrote:
>
>
>
> Only issue now is that if you have a NOT NULL constraint on a field,
> an IntegrityError exception gets raised when flush() is called. One
> way round this is to supply a dummy value for the field in question.
> Is there a better way to prevent the exception?
thats wh
Single table inheritance is broken in the given mapper creating
function on the deprecation guide page. Returning the mapper corrects
the issue.
def session_mapper(scoped_session):
def mapper(cls, *args, **kwargs):
cls.query = scoped_session.query_property()
return sqla_mapper
On 27 Jul 2009, at 16:32, Michael Bayer wrote:
>
> what's "elegant" to me is:
>
f = Foo()
Session.add(f)
Session.flush() # or commit
f.bar
> True
>
> consider that Foo() wouldn't know about server generated defaults if
> not
> associated with the database. The database asso
refresh() isnt doing things the same as expire() does. which is not
necessarily wrong, but if you use expire() for now, you'll get better
results. or turn off the lazy=False. but yes its a bug.
David Gardner wrote:
>
> By "simple" I mean it isn't based on my schema, and reproducable :)
>
> Mi
By "simple" I mean it isn't based on my schema, and reproducable :)
Michael Bayer wrote:
> four levels of inheritance ?! hardly simple. turn off the lazy=False for
> now, its an eager loading issue.
>
>
--
David Gardner
Pipeline Tools Programmer
Jim Henson Creature Shop
dgard...@creaturesh
David Gardner wrote:
>
> I was able to reproduce this issue in a simple test using sqlite,
> submitted as a bug
> http://www.sqlalchemy.org/trac/ticket/1485
four levels of inheritance ?! hardly simple. turn off the lazy=False for
now, its an eager loading issue.
--~--~-~--~~---
I was able to reproduce this issue in a simple test using sqlite,
submitted as a bug
http://www.sqlalchemy.org/trac/ticket/1485
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To post to this gr
> Movie is attached to a Director or not. like the FAQ says, we choose
> not to get into generating "events" from foreign keys being set.
> which is not a "forever" rule, but if you look in trac there are about
> 300 ORM issues open that I'd rather get resolved before I have the
> time
Thanks
/c
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To post to this group, send email to sqlalchemy@googlegroups.com
To unsubscribe from this group, send email to
sqlalchemy+unsubscr...@go
Carlos Rivolta wrote:
>
> Hi, i see that ColumnProperty.columns is a list. I could only produce
> examples of ColumnProperties with two values in joins with conflicting
> names of attribute from different tables (And SA warns you to use
> explicit properties). Are there situation in which it's leg
Jamie Bullock wrote:
>
>
> Hi,
>
> Is there a way in SQLalchemy to have the values of a mapped reflected
> table object set to default column values derived from the database
> backend?
>
> e.g. if column 'bar' of table 'foo' in my database has a default of
> "True", I would like to be able to do
naktinis wrote:
>
> I've seen that Session.mapper is deprecated. While I agree that auto-
> adding objects to a session may be a bad idea, I don't see why is it
> so bad to add the query() method directly to the mapped class.
>
> Is there a reason, why I shouldn't do it?
you are free to do it, us
ast wrote:
>
> Hello
>
> Can i connect to different database with SA.
>
> I want it to connect with SIMPLIFIED CHINESE_CHINA.ZHS16GBK Oracle db.
>
> Is it possible ?
as far as I know. nothing special should be needed. you might want to
set NLS_LANG to that value although with current versions
Hi, i see that ColumnProperty.columns is a list. I could only produce
examples of ColumnProperties with two values in joins with conflicting
names of attribute from different tables (And SA warns you to use
explicit properties). Are there situation in which it's legitimate to
have more that one va
Hi,
Is there a way in SQLalchemy to have the values of a mapped reflected
table object set to default column values derived from the database
backend?
e.g. if column 'bar' of table 'foo' in my database has a default of
"True", I would like to be able to do the following:
>>> foo_table = Table
> -Original Message-
> From: sqlalchemy@googlegroups.com
> [mailto:sqlalch...@googlegroups.com] On Behalf Of naktinis
> Sent: 27 July 2009 13:07
> To: sqlalchemy
> Subject: [sqlalchemy] Session mapper and Class.query() method
>
>
> I've seen that Session.mapper is deprecated. While I ag
I've seen that Session.mapper is deprecated. While I agree that auto-
adding objects to a session may be a bad idea, I don't see why is it
so bad to add the query() method directly to the mapped class.
Is there a reason, why I shouldn't do it?
--~--~-~--~~~---~--~~
Hello
Can i connect to different database with SA.
I want it to connect with SIMPLIFIED CHINESE_CHINA.ZHS16GBK Oracle db.
Is it possible ?
Thanks in advance
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"sqlalch
21 matches
Mail list logo
