diff options
| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-04-29 19:46:43 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-05-31 21:41:52 -0400 |
| commit | 4ecd352a9fbb9dbac7b428fe0f098f665c1f0cb1 (patch) | |
| tree | 323868c9f18fffdbfef6168622010c7d19367b12 /lib/sqlalchemy/ext/compiler.py | |
| parent | cbfa1363d7201848a56e7209146e81b9c51aa8af (diff) | |
| download | sqlalchemy-4ecd352a9fbb9dbac7b428fe0f098f665c1f0cb1.tar.gz | |
Improve rendering of core statements w/ ORM elements
This patch contains a variety of ORM and expression layer
tweaks to support ORM constructs in select() statements,
without the 1.3.x requiremnt in Query that a full
_compile_context() + new select() is needed in order to
get a working statement object.
Includes such tweaks as the ability to implement
aliased class of an aliased class,
as we are looking to fully support ACs against subqueries,
as well as the ability to access anonymously-labeled
ColumnProperty expressions within subqueries by
naming the ".key" of the label after the property
key. Some tuning to query.join() as well
as ORMJoin internals to allow things to work more
smoothly.
Change-Id: Id810f485c5f7ed971529489b84694e02a3356d6d
Diffstat (limited to 'lib/sqlalchemy/ext/compiler.py')
| -rw-r--r-- | lib/sqlalchemy/ext/compiler.py | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/lib/sqlalchemy/ext/compiler.py b/lib/sqlalchemy/ext/compiler.py index 32975a949..7736a1290 100644 --- a/lib/sqlalchemy/ext/compiler.py +++ b/lib/sqlalchemy/ext/compiler.py @@ -401,7 +401,6 @@ Example usage:: from .. import exc from .. import util from ..sql import sqltypes -from ..sql import visitors def compiles(class_, *specs): @@ -456,12 +455,12 @@ def compiles(class_, *specs): def deregister(class_): """Remove all custom compilers associated with a given - :class:`_expression.ClauseElement` type.""" + :class:`_expression.ClauseElement` type. + + """ if hasattr(class_, "_compiler_dispatcher"): - # regenerate default _compiler_dispatch - visitors._generate_compiler_dispatch(class_) - # remove custom directive + class_._compiler_dispatch = class_._original_compiler_dispatch del class_._compiler_dispatcher |