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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-06-03 17:38:35 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-06-06 13:31:54 -0400 |
| commit | 3ab2364e78641c4f0e4b6456afc2cbed39b0d0e6 (patch) | |
| tree | f3dc26609070c1a357a366592c791a3ec0655483 /lib/sqlalchemy/sql/roles.py | |
| parent | 14bc09203a8b5b2bc001f764ad7cce6a184975cc (diff) | |
| download | sqlalchemy-3ab2364e78641c4f0e4b6456afc2cbed39b0d0e6.tar.gz | |
Convert bulk update/delete to new execution model
This reorganizes the BulkUD model in sqlalchemy.orm.persistence
to be based on the CompileState concept and to allow plain
update() / delete() to be passed to session.execute() where
the ORM synchronize session logic will take place.
Also gets "synchronize_session='fetch'" working with horizontal
sharding.
Adding a few more result.scalar_one() types of methods
as scalar_one() seems like what is normally desired.
Fixes: #5160
Change-Id: I8001ebdad089da34119eb459709731ba6c0ba975
Diffstat (limited to 'lib/sqlalchemy/sql/roles.py')
| -rw-r--r-- | lib/sqlalchemy/sql/roles.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/roles.py b/lib/sqlalchemy/sql/roles.py index 5a55fe5f2..3d94ec9ff 100644 --- a/lib/sqlalchemy/sql/roles.py +++ b/lib/sqlalchemy/sql/roles.py @@ -184,10 +184,15 @@ class CompoundElementRole(SQLRole): ) +# TODO: are we using this? class DMLRole(StatementRole): pass +class DMLTableRole(FromClauseRole): + _role_name = "subject table for an INSERT, UPDATE or DELETE" + + class DMLColumnRole(SQLRole): _role_name = "SET/VALUES column expression or string key" |