> is it possible your object is present in a session that is, in a different > thread, being expired as this operation runs ? I don't know, but i can verify that. If that is happening, what can i do to prevent?
> Well seems like the project you want to access is just None. SA can't do > anything with it. I had a similar problem recently, it was… I'm not trying to access anything, i'm just trying to merge the object into the session… On Sat, Mar 27, 2010 at 3:25 PM, Michael Bayer <mike...@zzzcomputing.com> wrote: > > On Mar 27, 2010, at 12:42 PM, Fernando Takai wrote: > >> Hi all! >> >> I'm running SQLAlchemy 0.6b2 for a while and i've seem some strange >> exception (AttributeError: 'NoneType' object has no attribute >> '_sa_iterator') happening one in a while. >> This is my stacktrace: >> >> Traceback (most recent call last): >> File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner >> self.run() >> File "/usr/lib/python2.5/threading.py", line 446, in run >> self.__target(*self.__args, **self.__kwargs) >> File "./db/models/job.py", line 109, in run >> func(self) >> File "./queue/queue.py", line 284, in job_finished >> job = session.merge(job) >> File >> "/usr/lib/python2.5/site-packages/SQLAlchemy-0.6beta2-py2.5-linux-x86_64.egg/sqlalchemy/orm/session.py", >> line 1126, in merge >> load=load, _recursive=_recursive) >> File >> "/usr/lib/python2.5/site-packages/SQLAlchemy-0.6beta2-py2.5-linux-x86_64.egg/sqlalchemy/orm/session.py", >> line 1188, in _merge >> prop.merge(self, state, state_dict, merged_state, merged_dict, >> load, _recursive) >> File >> "/usr/lib/python2.5/site-packages/SQLAlchemy-0.6beta2-py2.5-linux-x86_64.egg/sqlalchemy/orm/properties.py", >> line 681, in merge >> obj = session._merge(current_state, current_dict, load=load, >> _recursive=_recursive) >> File >> "/usr/lib/python2.5/site-packages/SQLAlchemy-0.6beta2-py2.5-linux-x86_64.egg/sqlalchemy/orm/session.py", >> line 1188, in _merge >> prop.merge(self, state, state_dict, merged_state, merged_dict, >> load, _recursive) >> File >> "/usr/lib/python2.5/site-packages/SQLAlchemy-0.6beta2-py2.5-linux-x86_64.egg/sqlalchemy/orm/properties.py", >> line 661, in merge >> for current in instances: >> File >> "/usr/lib/python2.5/site-packages/SQLAlchemy-0.6beta2-py2.5-linux-x86_64.egg/sqlalchemy/orm/collections.py", >> line 570, in __iter__ >> return iter(getattr(self._data(), '_sa_iterator')()) >> AttributeError: 'NoneType' object has no attribute '_sa_iterator' > > is it possible your object is present in a session that is, in a different > thread, being expired as this operation runs ? > > > > > > >> >> I don't have a good test for this, but i'm trying to create one. >> Does anyone knows why this is happening? >> >> Thanks! >> >> -- >> Fernando Takai >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sqlalchemy" group. >> To post to this group, send email to sqlalch...@googlegroups.com. >> To unsubscribe from this group, send email to >> sqlalchemy+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/sqlalchemy?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to sqlalch...@googlegroups.com. > To unsubscribe from this group, send email to > sqlalchemy+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. > > -- Fernando Takai -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
