[orm] [bug] Fixed issue involving lazy="raise" strategy where an ORM delete of an
object would raise for a simple "use-get" style many-to-one relationship
that had lazy="raise" configured. This is inconsistent vs. the change
introduced in 1.3 as part of #4353, where it was established that
a history operation that does not expect emit SQL should bypass the
lazy="raise" check, and instead effectively treat it as
lazy="raise_on_sql" for this case. The fix adjusts the lazy loader
strategy to not raise for the case where the lazy load was instructed that
it should not emit SQL if the object were not present.
[orm] [bug] Fixed regression introduced in 1.3.0 related to the association proxy
refactor in #4351 that prevented composite() attributes
from working in terms of an association proxy that references them.
[orm] [bug] Setting persistence-related flags on relationship() while also
setting viewonly=True will now emit a regular warning, as these flags do
not make sense for a viewonly=True relationship. In particular, the
"cascade" settings have their own warning that is generated based on the
individual values, such as "delete, delete-orphan", that should not apply
to a viewonly relationship. Note however that in the case of "cascade",
these settings are still erroneously taking effect even though the
relationship is set up as "viewonly". In 1.4, all persistence-related
cascade settings will be disallowed on a viewonly=True relationship in
order to resolve this issue.
[orm] [bug] [py3k] Fixed issue where when assigning a collection to itself as a slice, the
mutation operation would fail as it would first erase the assigned
collection inadvertently. As an assignment that does not change the
contents should not generate events, the operation is now a no-op. Note
that the fix only applies to Python 3; in Python 2, the __setitem__
hook isn't called in this case; __setslice__ is used instead which
recreates the list item-by-item in all cases.
[orm] [bug] Fixed issue where by if the "begin" of a transaction failed at the Core
engine/connection level, such as due to network error or database is locked
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Bumps sqlalchemy from 1.3.4 to 1.3.12.
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