- got mysql to have "format" as default paramstyle even if mysql module not available, allows unit tests
to pass in non-mysql system for [ticket:457]. all the dialects should be changed to pass in their usual
paramstyle.
- relations keep track of "polymorphic_primaryjoin", "polymorphic_secondaryjoin" which it derives from the plain primaryjoin/secondaryjoin.
- lazy/eagerloaders work from those polymorphic join objects.
- the join exported by PropertyLoader to Query/SelectResults is the polymorphic join, so that join_to/etc work properly.
- Query builds itself against the base Mapper again, not the "polymorphic" mapper. uses the "polymorphic" version
only as appropriate. this helps join_by/join_to/etc to work with polymorphic mappers.
- Query will also adapt incoming WHERE criterion to the polymorphic mapper, i.e. the "people" table becomes the "person_join" automatically.
- quoting has been modified since labels made out of non-case-sensitive columns could themselves require quoting..so case_sensitive defaults to True if not otherwise specified (used to be based on the identifier itself).
- the test harness gets an ORMTest base class and a bunch of the ORM unit tests are using it now, decreases a lot of redundancy.
itself automatically based on if a parent schemaitem has a non-None
setting for the flag, or if not, then whether the identifier name is all lower
case or not. when set to True, quoting is applied to identifiers with mixed or
uppercase identifiers. quoting is also applied automatically in all cases to
identifiers that are known to be reserved words or contain other non-standard
characters. various database dialects can override all of this behavior, but
currently they are all using the default behavior. tested with postgres, mysql,
sqlite. needs more testing with firebird, oracle, ms-sql. part of the ongoing
work with [ticket:155]
turned on for individual table, schema, and column identifiers when
used in all queries/creates/drops. Enabled via "quote=True" in
Table or Column, as well as "quote_schema=True" in Table. Thanks to
Aaron Spike for his excellent efforts. [ticket:155]
Mike Bayer