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thrown off during a collection replace event, if the
reorder_on_append flag were set to True. The fix ensures that the
ordering list only impacts the list that is explicitly associated
with the object.
fixes #3191
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https://bitbucket.org/goodscloud/sqlalchemy into pr27
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https://bitbucket.org/goodscloud/sqlalchemy into pr27
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If a class inherited from MutableDict (say, for instance, to add an update() method), coerce() would give back an instance of MutableDict instead of an instance of the derived class.
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ref #3129
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to get all flake8 passing
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Return the assigned value in MultableDict.setdefault
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distinguished for when it was actually the value ``False``.
The ``__abstract__`` flag needs to acutally evaluate to a True
value at the level being tested.
fixes #3097
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mixin or abstract class when accessed, so that modifications made
to this dictionary by declarative itself won't conflict with that
of other mappings. The dictionary is modified regarding the
``version_id_col`` and ``polymorphic_on`` arguments, replacing the
column within with the one that is officially mapped to the local
class/table. fixes #3062
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report change events for the ``setdefault()`` dictionary operation.
fixes #3051
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Removed ungrammatical apostrophes from documentation, replacing
"it's" with "its" where appropriate (but in a few cases with "it is"
when that read better).
While doing that, I also fixed a couple of minor typos etc.
as I noticed them.
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Found using: https://github.com/intgr/topy
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it for DELETE would fail to target the correct row for DELETE.
Then to compound matters, basic "number of rows matched" checks were
not being performed. Both issues are fixed, however note that the
"rows matched" check requires so-called "sane multi-row count"
functionality; the DBAPI's executemany() method must count up the
rows matched by individual statements and SQLAlchemy's dialect must
mark this feature as supported, currently applies to some mysql dialects,
psycopg2, sqlite only. fixes #3006
- Enabled "sane multi-row count" checking for the psycopg2 DBAPI, as
this seems to be supported as of psycopg2 2.0.9.
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not be created between two classes that are in a joined inheritance
relationship, for those foreign keys that link the subclass back to
the superclass.
fixes #3004
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:func:`.attributes.flag_modified` where the change event would not be
propagated if the attribute had been reassigned to itself.
fixes #2997
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(e.g. ``x[:] = [...]``) would fail on Py3k.
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caused a user-provided "getter" to no longer receive values of ``None``
when fetching scalar values from a target that is non-present. The
check for None introduced by this change is now moved into the default
getter, so a user-provided getter will also again receive values of
None.
re: #2810
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sections
- convert all paramter references in relationship documentation to :paramref:
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fully usable within declarative relationship configuration, as its
string classname would not be available in the registry of classnames
at mapper configuration time. The class now explicitly adds itself
to the class regsitry, and additionally both :class:`.AbstractConcreteBase`
as well as :class:`.ConcreteBase` set themselves up *before* mappers
are configured within the :func:`.configure_mappers` setup, using
the new :meth:`.MapperEvents.before_configured` event. [ticket:2950]
- Added new :meth:`.MapperEvents.before_configured` event which allows
an event at the start of :func:`.configure_mappers`, as well
as ``__declare_first__()`` hook within declarative to complement
``__declare_last__()``.
- modified how after_configured is invoked; we just make a dispatch()
not actually connected to any mapper. this makes it easier
to also invoke before_configured correctly.
- improved the ComparableEntity fixture to handle collections that are sets.
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as automating this pattern
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new automap extension would fail if classes
were pre-arranged in single or potentially joined inheritance patterns.
The repaired joined inheritance issue could also potentially apply when
using :class:`.DeferredReflection` as well.
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Remove uneeded import from code example
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This had me reread the code twice to see if I missed why the import was
present.
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target of :paramref:`.relationship.secondary` for the purposes
of creating very complex :func:`.relationship` join conditions.
The change includes adjustments to query joining, joined eager loading
to not render a SELECT subquery, changes to lazy loading such that
the "secondary" target is properly included in the SELECT, and
changes to declarative to better support specification of a
join() object with classes as targets.
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- tests
- full documentation, changelog, new in 0.9 announcement
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classes
against the remaining tables within the given metadata.
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:class:`.DeferredReflection`
to define classes pending for reflection, if some subset of those
classes were discarded before the :meth:`.DeferredReflection.prepare`
method were called to reflect and map the class, a strong reference
to the class would remain held within the declarative internals.
This internal collection of "classes to map" now uses weak
references against the classes themselves.
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attribute on declarative to simply refer directly to an :class:`.InstrumentedAttribute`
on a superclass or on the class itself, and it
acts more or less like a synonym; in 0.9, this fails to set up enough
bookkeeping to keep up with the more liberalized backref logic
from :ticket:`2789`. Even though this use case was never directly
considered, it is now detected by declarative at the "setattr()" level
as well as when setting up a subclass, and the mirrored/renamed attribute
is now set up as a :func:`.synonym` instead. [ticket:2900]
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:class:`.Column` is mapped multiple times under different properties
(which typically should be a :func:`.synonym` instead) or if two
or more :class:`.Column` objects are given the same name, raising
a warning if this condition is detected. [ticket:2828]
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automatic reflection support for the "secondary" table referred
to by a :func:`.relationship`. "secondary", when specified
either as a string table name, or as a :class:`.Table` object with
only a name and :class:`.MetaData` object will also be included
in the reflection process when :meth:`.DeferredReflection.prepare`
is called. [ticket:2865]
- clsregistry._resolver() now uses a stateful _class_resolver()
class in order to handle the work of mapping strings to
objects. This is to provide for simpler extensibility, namely
a ._resolvers collection of ad-hoc name resolution functions;
the DeferredReflection class adds its own resolver here in order
to handle relationship(secondary) names which generate new
Table objects.
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as the string name of a class or other argument within
declarative using :func:`.relationship`.
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versionadded
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More fixes for cross references and reducing warnings (3rd wave)
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We should probably reword this entirely as, IMHO, this should be in the
changelog and not in the doc proper (which should only describe the
current state of affairs).
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correctly with table or column names that contain non-ASCII
characters. [ticket:2869]
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