Hi Michael, thanks for replying - the reason I attached a zipfile is because sqlite isn't supported natively on ironpython, so I've had to include the source and a dll for it. So, if you did have time to open it up and take a peek, I'd very much appreciate it.
Alternatively, how can I run the sqla unit tests? On Tue, Jul 6, 2010 at 3:56 PM, Michael Bayer <mike...@zzzcomputing.com>wrote: > > On Jul 6, 2010, at 4:18 AM, Harry Percival wrote: > > Hi, > > I've got an error which occurs in ironpython but not in cpython. can anyone > replicate? See attached. I'm using IPY 2.6. > > *<string>:1: DeprecationWarning: object.__init__() takes no parameters for >> type _keyed_weakref >> <string>:1: DeprecationWarning: object.__init__() takes no parameters for >> type KeyedRef >> <Movies object at 0x0000000000000034> >> <Directors object at 0x0000000000000038> >> caught exception 'NoneType' object has no attribute 'set' >> Traceback (most recent call last): >> File "D:\workspace\resolver\test_multitable.py", line 54, in <module> >> mapper(MoviesAndDirectors,j)#ipy errors here >> File "D:\workspace\resolver\sqlalchemy\orm\__init__.py", line 818, in >> mapper >> return Mapper(class_, local_table, *args, **params) >> File "D:\workspace\resolver\sqlalchemy\orm\mapper.py", line 210, in >> __init__ >> self._configure_properties() >> File "D:\workspace\resolver\sqlalchemy\orm\mapper.py", line 563, in >> _configure_properties >> self._configure_property(column_key, >> File "D:\workspace\resolver\sqlalchemy\orm\mapper.py", line 755, in >> _configure_property >> prop.instrument_class(self) >> File "D:\workspace\resolver\sqlalchemy\orm\properties.py", line 87, in >> instrument_class >> attributes.register_descriptor( >> File "D:\workspace\resolver\sqlalchemy\orm\attributes.py", line 1424, in >> register_descriptor >> manager.instrument_attribute(key, descriptor) >> File "D:\workspace\resolver\sqlalchemy\orm\attributes.py", line 1012, in >> instrument_attribute >> self.install_descriptor(key, inst) >> File "D:\workspace\resolver\sqlalchemy\orm\attributes.py", line 1054, in >> install_descriptor >> setattr(self.class_, key, inst) >> File "D:\workspace\resolver\sqlalchemy\orm\attributes.py", line 151, in >> __set__ >> self.impl.set(instance_state(instance), instance_dict(instance), value, >> None) >> AttributeError: 'NoneType' object has no attribute 'set' >> * > > > > > does this look like a bug with ironpython? if so, I'll report it to the > developers, but i need a little more help tracking down exactly what's going > wrong... > > > its likely some slightly different behavior in ironpython regarding > descriptors. If you don't have a lot of SQLA experience, it would be > extremely difficult to get SQLA running with a new Python interpreter. > Getting it to run on Jython took a huge amount of effort and weeks/months of > bughunting, both in SQLA and Jython itself. We currently don't have any > resources to get it to work on IronPython as well. > > > > For bonus points: In the attached database, there's a many-to-many > relationship between 'movies' and 'directors' via a simple joining table. > How come SQLA isn't able to figure this out on its own and let me just > join(movies_table, directors_table)? It seems unneccesary to have to specify > the extra join(movies_table,md_table).join(directors_table)... > > > I don't generally open full zipfiled applications, so if you want to attach > a succinct, single-file code example that would help. If you have > relationships between two classes, the relationship() function is used to > establish that, which would allow query.join(Movie.directors) to generate > the joins automatically. > > > -- > 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<sqlalchemy%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. > -- ------------------------------ Harry J.W. Percival ------------------------------ Italy Mobile: +39 389 095 8959 UK Mobile: +44 (0) 78877 02511 (may be turned off) Skype: harry.percival Email: harry.perci...@gmail.com -- 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.
