Hi All,
We're using single table inheritence in one of our projects but we have
some obsolete rows that are each mapped to their own python class.
If we remove the obsolete classes, when we try and do:
session.query(TheBaseClass)
...we get:
File
"/usr/lib/python2.5/site-packages/SQLAlchemy-0.5.5-py2.5.egg/sqlalchemy/orm/mapper.py",
line 1742, in configure_subclass_mapper
raise AssertionError("No such polymorphic_identity %r is defined" %
discriminator)
AssertionError: No such polymorphic_identity 'TheClassName' is defined
Is there any way to phrase that query as "just ignore rows where no
polymorphic mapper can be found"?
If not, I guess I need to do session.query(TheClassName).delete() before
I remove the code, right?
cheers,
Chris
--
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.
