diff options
Diffstat (limited to 'lib/sqlalchemy/orm/base.py')
| -rw-r--r-- | lib/sqlalchemy/orm/base.py | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/lib/sqlalchemy/orm/base.py b/lib/sqlalchemy/orm/base.py index 3390ceec4..7bfafdc2b 100644 --- a/lib/sqlalchemy/orm/base.py +++ b/lib/sqlalchemy/orm/base.py @@ -437,6 +437,7 @@ class InspectionAttr(object): here intact for forwards-compatibility. """ + __slots__ = () is_selectable = False """Return True if this object is an instance of :class:`.Selectable`.""" @@ -488,6 +489,16 @@ class InspectionAttr(object): """ + +class InspectionAttrInfo(InspectionAttr): + """Adds the ``.info`` attribute to :class:`.InspectionAttr`. + + The rationale for :class:`.InspectionAttr` vs. :class:`.InspectionAttrInfo` + is that the former is compatible as a mixin for classes that specify + ``__slots__``; this is essentially an implementation artifact. + + """ + @util.memoized_property def info(self): """Info dictionary associated with the object, allowing user-defined @@ -501,9 +512,10 @@ class InspectionAttr(object): .. versionadded:: 0.8 Added support for .info to all :class:`.MapperProperty` subclasses. - .. versionchanged:: 1.0.0 :attr:`.InspectionAttr.info` moved - from :class:`.MapperProperty` so that it can apply to a wider - variety of ORM and extension constructs. + .. versionchanged:: 1.0.0 :attr:`.MapperProperty.info` is also + available on extension types via the + :attr:`.InspectionAttrInfo.info` attribute, so that it can apply + to a wider variety of ORM and extension constructs. .. seealso:: @@ -520,3 +532,4 @@ class _MappedAttribute(object): attributes. """ + __slots__ = () |