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This patch replaces the ORM execution flow with a
single pathway through Session.execute() for all queries,
including Core and ORM.
Currently included is full support for ORM Query,
Query.from_statement(), select(), as well as the
baked query and horizontal shard systems. Initial
changes have also been made to the dogpile caching
example, which like baked query makes use of a
new ORM-specific execution hook that replaces the
use of both QueryEvents.before_compile() as well
as Query._execute_and_instances() as the central
ORM interception hooks.
select() and Query() constructs alike can be passed to
Session.execute() where they will return ORM
results in a Results object. This API is currently
used internally by Query. Full support for
Session.execute()->results to behave in a fully
2.0 fashion will be in later changesets.
bulk update/delete with ORM support will also
be delivered via the update() and delete()
constructs, however these have not yet been adapted
to the new system and may follow in a subsequent
update.
Performance is also beginning to lag as of this
commit and some previous ones. It is hoped that
a few central functions such as the coercions
functions can be rewritten in C to re-gain
performance. Additionally, query caching
is now available and some subsequent patches
will attempt to cache more of the per-execution
work from the ORM layer, e.g. column getters
and adapters.
This patch also contains initial "turn on" of the
caching system enginewide via the query_cache_size
parameter to create_engine(). Still defaulting at
zero for "no caching". The caching system still
needs adjustments in order to gain adequate performance.
Change-Id: I047a7ebb26aa85dc01f6789fac2bff561dcd555d
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Applied on top of a pure run of black -l 79 in
I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9, this set of changes
resolves all remaining flake8 conditions for those codes
we have enabled in setup.cfg.
Included are resolutions for all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.
Change-Id: I4f72d3ba1380dd601610ff80b8fb06a2aff8b0fe
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This is a straight reformat run using black as is, with no edits
applied at all.
The black run will format code consistently, however in
some cases that are prevalent in SQLAlchemy code it produces
too-long lines. The too-long lines will be resolved in the
following commit that will resolve all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.
Change-Id: I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9
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Change-Id: I57144a559f20abab02e745d052be5ff84edec7f8
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- fix broken py2k/py3k isms
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- went through examples/ and cleaned out excess list() calls
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