I found that it is essential to first point the parent to the child
and only then set
the back reference from in the child object to the parent. Otherwise
the ORM goes into non-ending
recursion.
On Sep 12, 3:52 pm, Ernst er...@hisplace.net wrote:
Hi,
I do not understand the backref bit. With
The two instances don't have the same ID, the uniqueness is tested on two other
columns.
session.query(cls).filter(cls.the_unique_column==new_object.the_unique_column).first()
Is there a way to get the tuple (usually a couple) of columns that are involved
in a unique constraint ? if there is
I was curious if there were any way to pull a XMLType field into a
python field when using declarative. I have been able to do it with
cx_Oracle by executing a query using XMLType.getClobVal and would
probably work with sqlalchemy's manual query system too, but would
love it if I could use it as
cant speak for Elixir, but your passive_deletes is on the wrong side in your
declarative example.
The correlations between classical and declarative relationship patterns are
now individually contrasted at
http://www.sqlalchemy.org/docs/orm/relationships.html#basic-relational-patterns
.
On
Its impossible for me to assist you further without the benefit of a complete
example of what you're doing, including both tables, both mappers, an example
of their manipulation. If you attach a test case make sure its self contained
and does not rely on external libraries other than
On Sep 12, 2010, at 6:23 AM, millsks wrote:
I was curious if there were any way to pull a XMLType field into a
python field when using declarative. I have been able to do it with
cx_Oracle by executing a query using XMLType.getClobVal and would
probably work with sqlalchemy's manual query
Sorry about that. It was 4am this morning on my android so i wasnt thinking
clearly yet.
XMLType is an Oracle object type and library for storing and interacting
with XML documents. getClobVal is a method of XMLType that returns an XML
chunk of data as a CLOB instead of as an object. I have
On Sep 12, 2010, at 12:28 PM, Kevin Mills wrote:
Sorry about that. It was 4am this morning on my android so i wasnt thinking
clearly yet.
XMLType is an Oracle object type and library for storing and interacting with
XML documents. getClobVal is a method of XMLType that returns an XML
On Sep 11, 2010, at 11:26 PM, Simon Wittber wrote:
On Sep 12, 12:46 am, Michael Bayer mike...@zzzcomputing.com wrote:
OK, sure. beyond that though do queries with the column and such do whats
expected?
Just tried this morning, and it works as expected, create / update
statements
Hi Michael
I made a simplified but I think for the ORM equivalent example which I attach.
In ExamplesTest.py I commented:
# essential: ORM canot cope if this comes after s._mother = m
It seems if that condition is not met then there is indefinite
recursion. Whether that could/should be avoided by
On 09/12/2010 04:27 PM, Michael Bayer wrote:
cant speak for Elixir, but your passive_deletes is on the wrong side in
your declarative example.
The correlations between classical and declarative relationship patterns are
now individually contrasted at
On 09/12/2010 04:27 PM, Michael Bayer wrote:
cant speak for Elixir, but your passive_deletes is on the wrong side in
your declarative example.
The correlations between classical and declarative relationship patterns are
now individually contrasted at
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