would not get the appropriate collection
instrumentation if it were only used
in a custom subclass that used
@collection.internally_instrumented.
[ticket:2406]
- added docs for collection
loader options to allow "default" loader strategies.
Pass '*' to any of joinedload(), lazyload(),
subqueryload(), or noload() and that becomes the
loader strategy used for all relationships,
except for those explicitly stated in the
Query. Thanks to up-and-coming contributor
Kent Bower for an exhaustive and well
written test suite ! [ticket:2351]
new kinds of values:
- standalone expressions that aren't
otherwise mapped
- column_property() objects
- string names of any column_property()
or attribute name of a mapped Column
The docs include an example using
the case() construct, which is likely to be
a common constructed used here.
[ticket:2345] and part of [ticket:2238]
- [feature] Added new value for Column autoincrement
called "ignore_fk", can be used to force autoincrement
on a column that's still part of a ForeignKeyConstraint.
New example in the relationship docs illustrates
its use.
to pg.ENUM. When False, no CREATE/DROP or
checking for the type will be performed as part
of a table create/drop event; only the
create()/drop)() methods called directly
will do this. Helps with Alembic "offline"
scripts.
- de-emphasize contains_alias() which is pretty much a non-use case
- add docs for immediateload which have been missing all this time
- fix links, formatting
- MetaData() accepts "schema" and "quote_schema"
arguments, which will be applied to the same-named
arguments of a Table
or Sequence which leaves these at their default
of ``None``.
- Sequence accepts "quote_schema" argument
- tometadata() for Table will use the "schema"
of the incoming MetaData for the new Table
if the schema argument is explicitly "None"
- Added CreateSchema and DropSchema DDL
constructs - these accept just the string
name of a schema and a "quote" flag.
- When using default "schema" with MetaData,
ForeignKey will also assume the "default" schema
when locating remote table. This allows the "schema"
argument on MetaData to be applied to any
set of Table objects that otherwise don't have
a "schema".
- a "has_schema" method has been implemented
on dialect, but only works on Postgresql so far.
Courtesy Manlio Perillo, [ticket:1679]
Called after a configure() step has completed and
mappers were in fact affected. Theoretically this
event is called once per application, unless new mappings
are constructed after existing ones have been used
already.
- New declarative features:
- __declare_last__() method, establishes an event
listener for the class method that will be called
when mappers are completed with the final "configure"
step.
- __abstract__ flag. The class will not be mapped
at all when this flag is present on the class.
- New helper classes ConcreteBase, AbstractConcreteBase.
Allow concrete mappings using declarative which automatically
set up the "polymorphic_union" when the "configure"
mapper step is invoked.
- The mapper itself has semi-private methods that allow
the "with_polymorphic" selectable to be assigned
to the mapper after it has already been configured.
[ticket:2239]
Mike Bayer