I have tried to create some custom SA type. And got in situation when I
can't find correct wayout. Minimal test case in attach.
My app have class SiteVersion, it can be used as regular object and as SA
mmaped object. When I use only SiteVesionDeco(see attach) all works fine,
except propagating
Hello,
Is there a way to use ZopeTransactionExtension using ShardedSession? I just
cannot figure it out. When I use it then I'm getting exception during any
query:
unbound method after_begin() must be called with ZopeTransactionExtension
instance as first argument (got SessionMaker instance
On Dec 3, 2012, at 10:20 PM, Derek Harland wrote:
The MSSQL dialect in 0.8.x seems to have had many of the reflection methods
changed from something like:
@reflection.cache
def get_view_names(self, connection, schema=None, **kw):
to
@reflection.cache
test cases and stack traces would be a start
On Dec 4, 2012, at 9:29 AM, Piotr Deszyński wrote:
Hello,
Is there a way to use ZopeTransactionExtension using ShardedSession? I just
cannot figure it out. When I use it then I'm getting exception during any
query:
unbound method
this is an incorrect __eq__() method:
def __eq__(self, other):
if not isinstance(other, SiteVersion):
raise NotImplementedError('Expect %s instance, got %s' %
(SiteVersion, other))
suppose I have a custom object Foo:
class Foo(object):
def __eq__(self, other):
Sorry, my fault. I was not enough attentive while read this
http://docs.python.org/2.7/reference/datamodel.html?highlight=__eq__#object.__eq__
part of documentation. I somehow thought that comparison method must wait
NotImplementedError in case of impassible comparison. But now, when you
We can turn on 'PRAGMA foreign_key = on' when running sqlite3 database system
manually. However it is not a convenient way. So I wonder when I run the
migration script using sqlalchemy and alembic tool, targeting sqlite3, is there
a way to enforce the foreign key constraint in the migration
On Tue, 2012-12-04 at 08:53:43 -0800, junepeach wrote:
We can turn on 'PRAGMA foreign_key = on' when running sqlite3 database
system manually. However it is not a convenient way. So I wonder when
I run the migration script using sqlalchemy and alembic tool,
targeting sqlite3, is there a way
Thanks Audrius. Do you have a simple working example in sqlalchemy? I am not
familiar with sqlalchemy. My migration script will separate from other python
development codes. So it is better to put 'PRAGMA foreign_keys=ON' in a
configuration file. I am pretty new to all of those stuff.
--
Hi,
I have the following tables:
rcpt_group_asoc = Table(mailing_rcptgroup_rcpts, Base.metadata,
Column('rcpt_id', Integer, ForeignKey('mailing_rcpt.id')),
Column('rcptgroup_id', Integer,
ForeignKey('mailing_rcptgroup.id')))
class Rcpt(Base):
__tablename__
After upgrading to SQLAlchemy 0.7.9 I know receive an error FlushError:
Over 100 subsequent flushes have occurred within session.commit() - is an
after_flush() hook creating new objects? which is was introduced by
On Tue, 2012-12-04 at 10:13:22 -0800, junepeach wrote:
Thanks Audrius. Do you have a simple working example in sqlalchemy? I
am not familiar with sqlalchemy. My migration script will separate
from other python development codes. So it is better to put 'PRAGMA
foreign_keys=ON' in a
On Dec 4, 2012, at 2:30 PM, Diego Woitasen wrote:
Hi,
I have the following tables:
rcpt_group_asoc = Table(mailing_rcptgroup_rcpts, Base.metadata,
Column('rcpt_id', Integer, ForeignKey('mailing_rcpt.id')),
Column('rcptgroup_id', Integer,
On Dec 4, 2012, at 3:04 PM, Jason wrote:
After upgrading to SQLAlchemy 0.7.9 I know receive an error FlushError:
Over 100 subsequent flushes have occurred within session.commit() - is an
after_flush() hook creating new objects? which is was introduced by
Does this mean there is a limit to the number of queries I can run in a
transaction?
For example I am looping about 20 times. For each loop I insert one or two
rows and do at least one query. There might be some more implicit queries
when accessing relationship properties. If I set
Disregard that, I spoke too soon. There is something going on after it
starts the commit process.
On Tuesday, December 4, 2012 3:35:40 PM UTC-5, Jason wrote:
Does this mean there is a limit to the number of queries I can run in a
transaction?
For example I am looping about 20 times. For
Ok I figured out the cause, but not the solution. I am using a mutable type
for hstore columns. I have a UserDefinedType for Hstore that just passes
everything through to psycopg2's hstore type:
class HStore(UserDefinedType):
SQLAlchemy type that passes through values to be handled by a
I have tried this with no luck.
--
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On Tuesday, December 4, 2012 5:12:51 PM UTC-3, Michael Bayer wrote:
On Dec 4, 2012, at 2:30 PM, Diego Woitasen wrote:
Hi,
I have the following tables:
rcpt_group_asoc = Table(mailing_rcptgroup_rcpts, Base.metadata,
Column('rcpt_id', Integer,
On Tuesday, December 4, 2012 4:15:03 PM UTC-5, Jason wrote:
Ok I figured out the cause, but not the solution. I am using a mutable
type for hstore columns. I have a UserDefinedType for Hstore that just
passes everything through to psycopg2's hstore type:
class HStore(UserDefinedType):
Can I use the Guid as primary key? I am newbie to sql and mysql
management.
Using such auto-generated surrogate keys is always a really bad idea
and the straightest and shortest way to data inconsistency hell
(especially through duplicates).
you've seen two guids generate as
On Dec 4, 2012, at 4:32 PM, Diego Woitasen wrote:
I'm mixing ORM and Core in my app because I performance in critical in some
parts of the code. Are there other problems related to this mix?
I wouldn't call them problems, but to the degree that you're using plain Core
have you tried 0.8 which now provides HSTORE built in ?
it's not apparent from this code fragment why your flush process is producing
residual state. I'd need a fully runnable and succinct test case to analyze
exactly what's going on.
On Dec 4, 2012, at 4:38 PM, Jason wrote:
On
On Dec 4, 2012, at 4:46 PM, Wolfgang Keller wrote:
Can I use the Guid as primary key? I am newbie to sql and mysql
management.
Using such auto-generated surrogate keys is always a really bad idea
and the straightest and shortest way to data inconsistency hell
(especially through
the FK constraint event is described here:
http://docs.sqlalchemy.org/en/rel_0_8/dialects/sqlite.html#foreign-key-support
this code can go whereever it is you build your engine, in env.py, or elsewhere.
If the above isn't working, check the prerequisites mentioned, especially
version of
On 5/12/2012, at 4:30 AM, Michael Bayer wrote:
On Dec 3, 2012, at 10:20 PM, Derek Harland wrote:
The MSSQL dialect in 0.8.x seems to have had many of the reflection methods
changed from something like:
@reflection.cache
def get_view_names(self, connection, schema=None, **kw):
If it's necessary I will provide both, the question before that is:
Should ZopeTransactionExtension work with ShardedSession? Because if it
wasn't designed for that, then there's no need to write test cases.
Best regards
W dniu wtorek, 4 grudnia 2012 16:31:16 UTC+1 użytkownik Michael Bayer
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