delta/python-packages/sqlalchemy.git/lib/sqlalchemy/orm/properties.py, branch pr/1

A meaningful :attr:`.QueryableAttribute.info` attribute is

2013-03-09T18:24:54+00:00

added, which proxies down to the ``.info`` attribute on either
the :class:`.schema.Column` object if directly present, or
the :class:`.MapperProperty` otherwise.  The full behavior
is documented and ensured by tests to remain stable.
[ticket:2675]

fix non2.5 compat @property usage

2013-03-04T00:17:03+00:00

dont need this conditional here

2013-03-03T19:02:54+00:00

- Improved checking for an existing backref name conflict during

2013-03-03T18:51:54+00:00

mapper configuration; will now test for name conflicts on
superclasses and subclasses, in addition to the current mapper,
as these conflicts break things just as much.  This is new for
0.8, but see below for a warning that will also be triggered
in 0.7.11.
- Improved the error message emitted when a "backref loop" is detected,
that is when an attribute event triggers a bidirectional
assignment between two other attributes with no end.
This condition can occur not just when an object of the wrong
type is assigned, but also when an attribute is mis-configured
to backref into an existing backref pair.  Also in 0.7.11.
- A warning is emitted when a MapperProperty is assigned to a mapper
that replaces an existing property, if the properties in question
aren't plain column-based properties.   Replacement of relationship
properties is rarely (ever?) what is intended and usually refers to a
mapper mis-configuration.   Also in 0.7.11.
[ticket:2674]

Can set/change the "cascade" attribute on a :func:`.relationship`

2013-03-03T01:27:53+00:00

construct after it's been constructed already.  This is not
a pattern for normal use but we like to change the setting
for demonstration purposes in tutorials.

the consideration of a pending object as

2013-01-25T02:31:23+00:00

an "orphan" has been modified to more closely match the
behavior as that of persistent objects, which is that the object
is expunged from the :class:`.Session` as soon as it is
de-associated from any of its orphan-enabled parents.  Previously,
the pending object would be expunged only if de-associated
from all of its orphan-enabled parents.  The new flag ``legacy_is_orphan``
is added to :func:`.orm.mapper` which re-establishes the
legacy behavior. [ticket:2655]

happy new year (see #2645)

2013-01-01T18:46:21+00:00

just a pep8 pass of lib/sqlalchemy/orm/

2012-11-19T22:19:24+00:00

- add class_ to AliasedInsp

2012-10-26T23:25:23+00:00

- redefine inspect(Class.attrname).parent to be always an inspectable
target; either Mapper or AliasedInsp
- add most major features to 08 migration, document, link

- some naming changes on PropComparator, Comparator:

2012-10-26T00:28:03+00:00

  1. all Comparators now have "parent" which is always the parent mapper
  or AliasedClass instance

  2. only RelationshipProperty.Comparator has "mapper" now, which
  is the target mapper

  3. The names "parententity" and "parentmapper" are underscored

also improved the message with the "neither comparator nor instruentedattribute...."
to include the classname + attribute name