Werner F. Bruhin wrote:
> ...
>
> j3 = sao.outerjoin(db.Cellarbook, db.Cbvintage).outerjoin(db.Cbvintage,
> db.Cbbottle)
> print j3
>
> j1 and j2 produce a join clause, but on j3 I get the following exception:
>
I different exception if I actually try to use j3:
I do this:
wine = session.query(db.Cellarbook)
j3 = sao.outerjoin(db.Cellarbook, db.Cbvintage).outerjoin(db.Cbvintage,
db.Cbbottle)
wine = wine.select_from(j3)
Then I get this:
Traceback (most recent call last):
File "saTest.py", line 76, in <module>
print wine
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\orm\query.py",
line 1565, in __str__
return str(self._compile_context().statement)
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\expression.py",
line 1157, in __str__
return unicode(self.compile()).encode('ascii', 'backslashreplace')
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\expression.py",
line 1153, in compile
compiler.compile()
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\compiler.py",
line 175, in compile
self.string = self.process(self.statement)
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\compiler.py",
line 183, in process
return meth(obj, **kwargs)
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\compiler.py",
line 498, in visit_select
correlate_froms = set(sql._from_objects(*froms))
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\expression.py",
line 886, in _from_objects
return itertools.chain(*[element._get_from_objects(**kwargs) for
element in elements])
File
"c:\python25\lib\site-packages\sqlalchemy-0.5.0rc1-py2.5.egg\sqlalchemy\sql\expression.py",
line 2412, in _get_from_objects
return [self] + self.onclause._get_from_objects(**modifiers) +
self.left._get_from_objects(**modifiers) +
self.right._get_from_objects(**modifiers)
AttributeError: type object 'Cbbottle' has no attribute '_get_from_objects'
Werner
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