I was testing 0.6beta3 with my code and I ran into a problem when
retrieving columns from a joined table.
It appears that it occurs when the object inherits from an object which
also inherits from another object all using joined table inheritance.
>>> from asset.farm.farmdb import *
>>> session=create_session()
>>> j=session.query(Job).get('testshow/201/s22/t04')
>>> j.scene_file
u'/show/testshow/eps/201/s22/t04/lgt/scn/201_s22_t04_lgt_scn_v004.ma'
>>> ca=session.query(Job).get('testshow/201/s22/t04/lgt/cA')
>>> ca.scene_file
------------------------------------------------------------
Traceback (most recent call last):
File "<ipython console>", line 1, in <module>
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/attributes.py",
line 159, in __get__
return self.impl.get(instance_state(instance), instance_dict(instance))
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/attributes.py",
line 377, in get
value = callable_(passive=passive)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/state.py",
line 268, in __call__
self.manager.deferred_scalar_loader(self, toload)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/mapper.py",
line 1943, in _load_scalar_attributes
refresh_state=state)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/query.py",
line 1675, in _get
return q.one()
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/query.py",
line 1408, in one
ret = list(self)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/query.py",
line 1451, in __iter__
return self._execute_and_instances(context)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/query.py",
line 1456, in _execute_and_instances
mapper=self._mapper_zero_or_none())
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/orm/session.py",
line 737, in execute
clause, params or {})
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/engine/base.py",
line 1086, in execute
return Connection.executors[c](self, object, multiparams, params)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/engine/base.py",
line 1151, in _execute_clauseelement
return self.__execute_context(context)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/engine/base.py",
line 1190, in __execute_context
r = context.get_result_proxy()._autoclose()
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/dialects/postgresql/psycopg2.py",
line 154, in get_result_proxy
return base.ResultProxy(self)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/engine/base.py",
line 1965, in __init__
self._init_metadata()
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/engine/base.py",
line 1972, in _init_metadata
self._metadata = ResultMetaData(self, metadata)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/engine/base.py",
line 1843, in __init__
result_processor(dialect, coltype)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/dialects/postgresql/base.py",
line 219, in result_processor
item_proc = self.item_type.result_processor(dialect, coltype)
File
"/users/dgardner/testsa/lib/python2.6/site-packages/SQLAlchemy-0.6beta3-py2.6.egg/sqlalchemy/dialects/postgresql/psycopg2.py",
line 97, in result_processor
raise exc.InvalidRequestError("Unknown PG numeric type: %d" % coltype)
NameError: global name 'exc' is not defined
>>> j.type
u'take'
>>> ca.type
u'cam'
--
David Gardner
Pipeline Tools Programmer
Jim Henson Creature Shop
dgard...@creatureshop.com
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