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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-10-11 14:45:24 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-10-16 13:33:01 -0400 |
| commit | 33119301bb3efa143ebaaef22a7b5170f14a1331 (patch) | |
| tree | 3097d7db5f2defabad7792539a8048f3c95c5c0c /lib/sqlalchemy/orm/base.py | |
| parent | 657ec85e8733c64b9be2154c3169d31c15a06dce (diff) | |
| download | sqlalchemy-33119301bb3efa143ebaaef22a7b5170f14a1331.tar.gz | |
Implement raiseload for deferred columns
Added "raiseload" feature for ORM mapped columns.
As part of this change, the behavior of "deferred" is now more strict;
an attribute that is set up as "deferred" at the mapper level no longer
participates in an "unexpire" operation; that is, when an unexpire loads
all the expired columns of an object which are not themselves in a deferred
group, those which are mapper-level deferred will never be loaded.
Deferral options set at query time should always be reset by an expiration
operation.
Renames deferred_scalar_loader to expired_attribute_loader
Unfortunately we can't have raiseload() do this because it would break
existing wildcard behavior.
Fixes: #4826
Change-Id: I30d9a30236e0b69134e4094fb7c1ad2267f089d1
Diffstat (limited to 'lib/sqlalchemy/orm/base.py')
| -rw-r--r-- | lib/sqlalchemy/orm/base.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/base.py b/lib/sqlalchemy/orm/base.py index e52b6d8bb..6f8d19293 100644 --- a/lib/sqlalchemy/orm/base.py +++ b/lib/sqlalchemy/orm/base.py @@ -206,6 +206,8 @@ _SET_DEFERRED_EXPIRED = util.symbol("SET_DEFERRED_EXPIRED") _DEFER_FOR_STATE = util.symbol("DEFER_FOR_STATE") +_RAISE_FOR_STATE = util.symbol("RAISE_FOR_STATE") + def _assertions(*assertions): @util.decorator |