diff options
Diffstat (limited to 'lib/sqlalchemy/ext/mutable.py')
| -rw-r--r-- | lib/sqlalchemy/ext/mutable.py | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py index 37c599e1d..1933d44ab 100644 --- a/lib/sqlalchemy/ext/mutable.py +++ b/lib/sqlalchemy/ext/mutable.py @@ -7,13 +7,9 @@ """Provide support for tracking of in-place changes to scalar values, which are propagated into ORM change events on owning parent objects. -The :mod:`sqlalchemy.ext.mutable` extension replaces SQLAlchemy's legacy -approach to in-place mutations of scalar values, established by the -``types.MutableType`` class as well as the ``mutable=True`` type flag, -with a system that allows change events to be propagated from the value to -the owning parent, thereby removing the need for the ORM to maintain copies -of values as well as the very expensive requirement of scanning through all -"mutable" values on each flush call, looking for changes. +.. versionadded:: 0.7 :mod:`sqlalchemy.ext.mutable` replaces SQLAlchemy's + legacy approach to in-place mutations of scalar values; see + :ref:`07_migration_mutation_extension`. .. _mutable_scalars: |