[Sqlalchemy-commits] commit/sqlalchemy: zzzeek: Support AssociationProxy any() / has() / contains() to another AssociationProxy

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1 new commit in sqlalchemy:

https://bitbucket.org/zzzeek/sqlalchemy/commits/27a0bdcae0eb/
Changeset:   27a0bdcae0eb
Branch:      master
User:        zzzeek
Date:        2017-06-12 20:31:59+00:00
Summary:     Support AssociationProxy any() / has() / contains() to another AssociationProxy

The :meth:`.AssociationProxy.any`, :meth:`.AssociationProxy.has`
and :meth:`.AssociationProxy.contains`
comparison methods now support linkage to an attribute that
is itself also an :class:`.AssociationProxy`, recursively.

After some initial attempts it's clear that the any() / has()
of AssociationProxy needed to be reworked into a generic
_criterion_exists() to allow this to work recursively without
excess complexity.  For the case of the multi-linked associationproxy,
the usual checks of "any()" / "has()" correctness simply don't
take place; for a single-link association proxy the error
checking logic that takes place in relationship() has been
ported to the local any() / has() methods.

Change-Id: Ic5aed2a4e910b8138a737d215430113c31cce856
Fixes: #3769

Affected #:  4 files

Repository URL: https://bitbucket.org/zzzeek/sqlalchemy/

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