Hi all, I have a query that gets conditionally extending depending on
what's going with a given request. I've got a section where it should join
something and search on that join, but if the same join has already
happened, I get an error. I've figured out i can do the following, which
looks like I'm stepping out of the public api:

if UserOrgRoleAssoc  not in [ent.class_ for ent in query._join_entities]:
  query.join(UserOrgRoleAssoc)

Is there a better (proper?) way to do this?

thanks!
Iain

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