table_names changed to accept an explicit connection
ThreadLocalMetaData constructor now takes no arguments. If case_sensitive is needed in a multi-bind context, move it to Table or subclass TLMD to force it.
Banished **kwargs from MetaData
Lots of class doc and docstring improvements around MetaData and TLMD.
Some engine->bind internal naming updates + reorg in schema.
MySQL table_names now return Unicode. (Also, a unicode reflect() unit test is needed.)
- added support for reflection of domains [ticket:570]
- types which are missing during reflection resolve to Null type
instead of raising an error
- moved reflection/types/query unit tests specific to postgres to new
postgres unittest module
of MySQL (#583)
- MySQL columns (such as times) with colons in their default values couldn't
be roundtripped, fixed (also in Postgres, but not fixed here.)
- BINARY/VARBINARY columns aren't really binary at all on ancient versions
of MySQL. The type.Binary(123) passthrough now always makes BLOBs.
Removed the short-lived MSBaseBinary.
- Added mysql.get_version_info, given a connectable returns a tuple of server
version info.
- Backed off on the reflection tests for older versions of MySQL, for now.
- removed silly behavior where sqlite would reflect UNIQUE indexes
as part of the primary key (?!)
- added __contains__ support to ColumnCollection; contains_column() method should be removed
- much more functionality moved into ExecutionContext, which impacted
the API used by dialects to some degree
- ResultProxy and subclasses now designed sanely
- merged patch for #522, Unicode subclasses String directly,
MSNVarchar implements for MS-SQL, removed MSUnicode.
- String moves its "VARCHAR"/"TEXT" switchy thing into
"get_search_list()" function, which VARCHAR and CHAR can override
to not return TEXT in any case (didnt do the latter yet)
- implements server side cursors for postgres, unit tests, #514
- includes overhaul of dbapi import strategy #480, all dbapi
importing happens in dialect method "dbapi()", is only called
inside of create_engine() for default and threadlocal strategies.
Dialect subclasses have a datamember "dbapi" referencing the loaded
module which may be None.
- added "mock" engine strategy, doesnt require DBAPI module and
gives you a "Connecition" which just sends all executes to a callable.
can be used to create string output of create_all()/drop_all().
Fix to null FLOAT fields in mssql-trusted.patch
MSSQL: LIMIT with OFFSET now raises an error
MSSQL: can now specify Windows authorization
MSSQL: ignores seconds on DATE columns (DATE fix, part 1)
SchemaItem so that the traversal of items is controlled by the
ClauseVisitor itself, using the method visitor.traverse(item).
accept_visitor() methods can still be called directly but will
not do any traversal of child items. ClauseElement/SchemaItem now
have a configurable get_children() method to return the collection
of child elements for each parent object. This allows the full
traversal of items to be clear and unambiguous (as well as loggable),
with an easy method of limiting a traversal (just pass flags which
are picked up by appropriate get_children() methods). [ticket:501]
- accept_schema_visitor() methods removed, replaced with
get_children(schema_visitor=True)
- various docstring/changelog cleanup/reformatting
methods, methods that are no longer needed. slightly more constrained
useage, greater emphasis on explicitness.
- table_iterator signature fixup, includes fix for [ticket:288]
- the "primary_key" attribute of Table and other selectables becomes
a setlike ColumnCollection object; is no longer ordered or numerically
indexed. a comparison clause between two pks that are derived from the
same underlying tables (i.e. such as two Alias objects) can be generated
via table1.primary_key==table2.primary_key
- append_item() methods removed from Table and Column; preferably
construct Table/Column/related objects inline, but if needed use
append_column(), append_foreign_key(), append_constraint(), etc.
- table.create() no longer returns the Table object, instead has no
return value. the usual case is that tables are created via metadata,
which is preferable since it will handle table dependencies.
- added UniqueConstraint (goes at Table level), CheckConstraint
(goes at Table or Column level) fixes [ticket:217]
- index=False/unique=True on Column now creates a UniqueConstraint,
index=True/unique=False creates a plain Index,
index=True/unique=True on Column creates a unique Index. 'index'
and 'unique' keyword arguments to column are now boolean only; for
explcit names and groupings of indexes or unique constraints, use the
UniqueConstraint/Index constructs explicitly.
- relationship of Metadata/Table/SchemaGenerator/Dropper has been
improved so that the schemavisitor receives the metadata object
for greater control over groupings of creates/drops.
- added "use_alter" argument to ForeignKey, ForeignKeyConstraint,
but it doesnt do anything yet. will utilize new generator/dropper
behavior to implement.
is deprecated, in favor of the "foreign_keys" list/set-based attribute,
which takes into account multiple foreign keys on one column.
"foreign_key" will return the first element in the "foreign_keys" list/set
or None if the list is empty.
- added a user test to the relationships test, testing various new things this
change allows
with use_information_schema=True argument to create_engine
[ticket:60], [ticket:71]
- added natural_case argument to Table, Column, semi-experimental
flag for use with table reflection to help with quoting rules
[ticket:155]
better error message in PropertyLoader (i.e. relation()/backref()) for when
the join condition can't be reasonably determined.
- sqlite creates ForeignKeyConstraint objects properly upon table
reflection.
PrimaryKeyConstraint objects (also UniqueConstraint not
completed yet). table creation and reflection modified
to be more oriented towards these new table-level objects.
reflection for sqlite/postgres/mysql supports composite
foreign keys; oracle/mssql/firebird not converted yet.
Jason Kirtland