thanks Michael. I took a look at README.unittests, but had some
difficulties running them with ironpython (ipy setup.py test fails, and
nosetests.exe doesn't allow you to specificy an interpreter). Still, i
found some help on the interwebs, as well as in the nose __init__.py.
eventually i was able to run the tests by running the following script:
import sys, os
#import ironclad #not needed. i think.
sys.path.append(r'C:\Python26\lib')
#now load Jeff Hardys sqlite dll which is in sqlite folder (sqlite not
supported on ipy)
sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)),'sqlite'))
import clr
clr.AddReference('IronPython.SQLite')
#load plugin
from sqlalchemy.test.noseplugin import NoseSQLAlchemy
from nose import main
if __name__ == '__main__':
main(addplugins=[NoseSQLAlchemy()])
cf
http://stackoverflow.com/questions/3198500/how-to-use-nose-with-ironpython/3223278#3223278
Here's the summary:
*Ran 1862 tests in 141.873s
> FAILED (SKIP=7, errors=1483, failures=52)
> *
oh dear! and yet, it seemed to be working pretty well until i ran into this
problem with mutli-table mapping. Also, Jeff Hardy's porting of sqlite is
still in development, so it may be the cause of a few errors... might take a
look at
On Sat, Jul 10, 2010 at 6:11 PM, Michael Bayer <mike...@zzzcomputing.com>wrote:
>
> On Jul 10, 2010, at 12:07 PM, Harry Percival wrote:
>
> OK, just in case anyone else is foolishly trying to run SQLA on
> ironpython, here's the workaround I've found:
>
> instead of attempting to use the mapper directly on the join:
>
> j = join(movies_table,md_table).join(directors_table)
>> mapper(MoviesAndDirectors,j) #ipy errors here
>>
>
> use a mapper on a select based on the join:
>
>
>> mapper(MoviesAndDirectors,j.select(use_labels=True).alias('moviesanddirectors'))
>>
>
> seems to be working ok for now.
>
> one final, polite plea - how can i run the sqla test suite, to see what
> other bugs might be lurking?
>
>
> running the tests is fully described in README.unittests
>
>
>
>
>
> cheers,
> Harry
>
>
> On Thu, Jul 8, 2010 at 10:52 AM, Harry Percival
> <harry.perci...@gmail.com>wrote:
>
>> Here's the source code of my test - let me know if I'm doing anything
>> wrong here
>>
>> from sqlalchemy import create_engine
>> from sqlalchemy.orm import mapper
>> from sqlalchemy.sql.expression import join
>> from sqlalchemy.orm.session import sessionmaker
>> from sqlalchemy.schema import MetaData
>> import traceback
>>
>> try:
>> import clr
>> import os
>> import sys
>>
>> sys.path.append(os.path.join(os.path.abspath(os.path.curdir),'sqlite'))
>> clr.AddReference('Ironpython.Sqlite') #need this for sqlite to work
>> on ironpython. refers to a dll in zip file.
>> except:
>> #not ipy
>> pass
>> #from sqlalchemy.ext.sqlsoup import SqlSoup #sqlsoup also errors
>>
>> engine = create_engine('sqlite:///moviedemo_simple.db3') #moviedemo file
>> also in zip file.
>> Session = sessionmaker(bind=engine)
>> class Movies(object):
>> pass
>> class Directors(object):
>> pass
>> class Genres(object):
>> pass
>> class MoviesAndDirectors(object):
>> pass
>>
>> meta = MetaData()
>> meta.reflect(bind=engine)
>> all_tables = meta.tables
>>
>> movies_table = all_tables['movies']
>> genres_table = all_tables['genres']
>> directors_table = all_tables['directors']
>> md_table = all_tables['movie_directors']
>>
>> mapper(Movies,movies_table)
>> mapper(Directors,directors_table)
>> mapper(Genres,genres_table)
>>
>> session = Session()
>> print session.query(Movies).all()[0]
>> print session.query(Directors).all()[0]
>>
>> j = join(movies_table,md_table).join(directors_table)
>> try:
>>
>> mapper(MoviesAndDirectors,j)#ipy errors here
>> mad1 = session.query(MoviesAndDirectors).all()[0]
>> print mad1
>> except Exception, e:
>> print 'caught exception',e
>> last_error = e
>> traceback.print_exc()
>>
>> how can i run the sqlalchemy test suite? I see it needs nose, i've
>> installed that. but i'm not clear what command to run to launch tests.
>>
>> rgds,
>> harry
>>
>>
>> On Tue, Jul 6, 2010 at 6:40 PM, Harry Percival
>> <harry.perci...@gmail.com>wrote:
>>
>>> 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.
>>>>
>>>>
>>>>
>>>> --
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>>>> 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
>>>
>>
>>
>>
>> --
>> ------------------------------
>> 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
>>
>
>
>
> --
> ------------------------------
> Harry J.W. Percival
> ------------------------------
> Italy Mobile: +39 389 095 8959
> UK Mobile: +44 (0) 78877 02511
> Skype: harry dot percival
>
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>
>
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--
------------------------------
Harry J.W. Percival
------------------------------
Italy Mobile: +39 389 095 8959
UK Mobile: +44 (0) 78877 02511
Skype: harry dot percival
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