| Commit message (Collapse) | Author | Age | Files | Lines |
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in I4e0b627bfa187f1780dc68ec81b94db1c78f846a the 1.4 version has more
changes than the main version, which failed to get the entire change,
yet the whole thing was merged. Restore the missing mutex related
code to the main version.
Fixed regression where the fix for :ticket:`8098`, which was released in
the 1.4 series and provided a layer of concurrency-safe checks for the
lambda SQL API, included additional fixes in the patch that failed to be
applied to the main branch. These additional fixes have been applied.
Change-Id: Id172e09c421dafa6ef1d40b383aa4371de343864
References: #8098
Fixes: #9461
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Remove ``typing.Self`` workaround, now using :pep:`673` for most methods
that return ``Self``. Pull request courtesy Yurii Karabas.
Fixes: #9254
Closes: #9255
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/9255
Pull-request-sha: 2947df8ada79f5c3afe9c838e65993302199c2f7
Change-Id: Ic32015ad52e95a61f3913d43ea436aa9402804df
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These weren't working at all, so fixed things up and
added a test suite. Keeping things very basic with Any
returns etc. as having more specific return types
starts making it too cumbersome to write end-user code.
Corrected the type passed for "lambda statements" so that a plain lambda is
accepted by mypy, pyright, others without any errors about argument types.
Additionally implemented typing for more of the public API for lambda
statements and ensured :class:`.StatementLambdaElement` is part of the
:class:`.Executable` hierarchy so it's typed as accepted by
:meth:`_engine.Connection.execute`.
Fixes: #9120
Change-Id: Ia7fa34e5b6e43fba02c8f94ccc256f3a68a1f445
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Change-Id: I625af65b3fb1815b1af17dc2ef47dd697fdc3fb1
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Fixed issue in lambda SQL feature where the calculated type of a literal
value would not take into account the type coercion rules of the "compared
to type", leading to a lack of typing information for SQL expressions, such
as comparisons to :class:`.JSON` elements and similar.
Fixes: #9029
Change-Id: I381c8d7458d98ba762313dee9ec47a9c1881f74a
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command run is "pyupgrade --py37-plus --keep-runtime-typing --keep-percent-format <files...>"
pyupgrade will change assert_ to assertTrue. That was reverted since assertTrue does not
exists in sqlalchemy fixtures
Change-Id: Ie1ed2675c7b11d893d78e028aad0d1576baebb55
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Fixed multiple observed race conditions related to :func:`.lambda_stmt`,
including an initial "dogpile" issue when a new Python code object is
initially analyzed among multiple simultaneous threads which created both a
performance issue as well as some internal corruption of state.
Additionally repaired observed race condition which could occur when
"cloning" an expression construct that is also in the process of being
compiled or otherwise accessed in a different thread due to memoized
attributes altering the ``__dict__`` while iterated, for Python versions
prior to 3.10; in particular the lambda SQL construct is sensitive to this
as it holds onto a single statement object persistently. The iteration has
been refined to use ``dict.copy()`` with or without an additional iteration
instead.
Fixes: #8098
Change-Id: I4e0b627bfa187f1780dc68ec81b94db1c78f846a
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a whole bunch of errors were apparently blocked by 0.0.4
being installed.
Fixes: #8020
Change-Id: I22a0faeaabe03de501897893391946d677c2df7e
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to simplify pyproject.toml change the remaining files
that aren't going to be typed on this first pass
(unless of course someone wants to type some of these)
to include # mypy: ignore-errors. for the moment, only a handful
of ORM modules are to have more type checking implemented.
It's important that ignore-errors is used and
not "# type: ignore", as in the latter case, mypy doesn't even
read the existing types in the file, which makes it impossible to
type any files that refer to those modules at all.
to simplify ongoing typing work use inline mypy config
for remaining files that are "done" for now, indicating the
level of type checking they currently have.
Change-Id: I98669c1a305c2f0adba85d10b5425541f3fe9533
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for the moment, abandoning using @overload with
relationship() and mapped_column(). The overloads
are very difficult to get working at all, and
the overloads that were there all wouldn't pass on
mypy. various techniques of getting them to
"work", meaning having right hand side dictate
what's legal on the left, have mixed success
and wont give consistent results; additionally,
it's legal to have Optional / non-optional
independent of nullable in any case for columns.
relationship cases are less ambiguous but mypy
was not going along with things.
we have a comprehensive system of allowing
left side annotations to drive the right side,
in the absense of explicit settings on the right.
so type-centric SQLAlchemy will be left-side
driven just like dataclasses, and the various flags
and switches on the right side will just not be
needed very much.
in other matters, one surprise, forgot to remove string support
from orm.join(A, B, "somename") or do deprecations
for it in 1.4. This is a really not-directly-used
structure barely
mentioned in the docs for many years, the example
shows a relationship being used, not a string, so
we will just change it to raise the usual error here.
Change-Id: Iefbbb8d34548b538023890ab8b7c9a5d9496ec6e
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the pep484 task becomes more intense as there is mounting
pressure to come up with a consistency in how data moves
from end-user to instance variable.
current thinking is coming into:
1. there are _typing._XYZArgument objects that represent "what the
user sent"
2. there's the roles, which represent a kind of "filter" for different
kinds of objects. These are mostly important as the argument
we pass to coerce().
3. there's the thing that coerce() returns, which should be what the
construct uses as its internal representation of the thing.
This is _typing._XYZElement.
but there's some controversy over whether or
not we should pass actual ClauseElements around by their role
or not. I think we shouldn't at the moment, but this makes the
"role-ness" of something a little less portable. Like, we have
to set DMLTableRole for TableClause, Join, and Alias, but then
also we have to repeat those three types in order to set up
_DMLTableElement.
Other change introduced here, there was a deannotate=True
for the left/right of a sql.join(). All tests pass without that.
I'd rather not have that there as if we have a join(A, B) where
A, B are mapped classes, we want them inside of the _annotations.
The rationale seems to be performance, but this performance can
be illustrated to be on the compile side which we hope is cached
in the normal case.
CTEs now accommodate for text selects including recursive.
Get typing to accommodate "util.preloaded" cleanly; add "preloaded"
as a real module. This seemed like we would have needed
pep562 `__getattr__()` but we don't, just set names in
globals() as we import them.
References: #6810
Change-Id: I34d17f617de2fe2c086fc556bd55748dc782faf0
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__future__.annotations mode allows us to use non-string
annotations for argument and return types in most cases,
but more importantly it removes a large amount of runtime
overhead that would be spent in evaluating the annotations.
Change-Id: I2f5b6126fe0019713fc50001be3627b664019ede
References: #6810
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Added an informative error message when a method object is passed to a SQL
construct. Previously, when such a callable were passed, as is a common
typographical error when dealing with method-chained SQL constructs, they
were interpreted as "lambda SQL" targets to be invoked at compilation time,
which would lead to silent failures. As this feature was not intended to be
used with methods, method objects are now rejected.
Fixes: #7032
Change-Id: If714715bd8c11557ab769ee3b1a24264b0b06acc
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All but one metaclass used internally can now
be replaced using __init_subclass__(). Within this
patch we remove:
* events._EventMeta
* sql.visitors.TraversibleType
* sql.visitors.InternalTraversibleType
* testing.fixtures.FindFixture
* testing.fixtures.FindFixtureDeclarative
* langhelpers.EnsureKWArgType
* sql.functions._GenericMeta
* sql.type_api.VisitableCheckKWArg (was a mixture of TraversibleType
and EnsureKWArgType)
The remaining internal class is MetaOptions used by the
sql.Options object which is in turn currently mostly for
ORM internal use, as this type implements class level overrides
for the ``+`` operator.
For declarative, removing DeclarativeMeta in place of
an `__init_subclass__()` class would not be fully feasible as
it would break backwards compatibility with applications that
refer to this class explicitly, but also DeclarativeMeta intercepts
class-level attribute set and delete operations which is a widely
used pattern. An option for declarative base to use
`__init_subclass__()` should be provided but this is out of
scope for this particular change.
Change-Id: I8aa898c7ab59d887739037d34b1cbab36521ab78
References: #6810
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Change-Id: I49abf2607e0eb0623650efdf0091b1fb3db737ea
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<!-- Provide a general summary of your proposed changes in the Title field above -->
### Description
<!-- Describe your changes in detail -->
There's a few bits and pieces of code to support Python <= 3.6 which are no longer needed and can be removed, to slightly simplify the codebase.
### Checklist
<!-- go over following points. check them with an `x` if they do apply, (they turn into clickable checkboxes once the PR is submitted, so no need to do everything at once)
-->
This pull request is:
- [ ] A documentation / typographical error fix
- Good to go, no issue or tests are needed
- [x] A short code fix
- please include the issue number, and create an issue if none exists, which
must include a complete example of the issue. one line code fixes without an
issue and demonstration will not be accepted.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests. one line code fixes without tests will not be accepted.
- [ ] A new feature implementation
- please include the issue number, and create an issue if none exists, which must
include a complete example of how the feature would look.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests.
**Have a nice day!**
Closes: #7544
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/7544
Pull-request-sha: 282b4a91282902a57807aa2541b75b272b547127
Change-Id: I9ddf15fcf72551d52e3f027f337c7fee4aa9083b
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<!-- Provide a general summary of your proposed changes in the Title field above -->
### Description
<!-- Describe your changes in detail -->
Black's `target-version` was still set to `['py27', 'py36']`. Set it to `[py37]` instead.
Also update Black and other pre-commit hooks and re-format with Black.
### Checklist
<!-- go over following points. check them with an `x` if they do apply, (they turn into clickable checkboxes once the PR is submitted, so no need to do everything at once)
-->
This pull request is:
- [ ] A documentation / typographical error fix
- Good to go, no issue or tests are needed
- [ ] A short code fix
- please include the issue number, and create an issue if none exists, which
must include a complete example of the issue. one line code fixes without an
issue and demonstration will not be accepted.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests. one line code fixes without tests will not be accepted.
- [ ] A new feature implementation
- please include the issue number, and create an issue if none exists, which must
include a complete example of how the feature would look.
- Please include: `Fixes: #<issue number>` in the commit message
- please include tests.
**Have a nice day!**
Closes: #7536
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/7536
Pull-request-sha: b3aedf5570d7e0ba6c354e5989835260d0591b08
Change-Id: I8be85636fd2c9449b07a8626050c8bd35bd119d5
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Change-Id: I7aaeb5bc130271624335b79cf586581d6c6c34c7
References: #4600
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Change-Id: I8172fdcc3103ff92aa049827728484c8779af6b7
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References: #4600
Change-Id: I2a62ddfe00bc562720f0eae700a497495d7a987a
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The major action here is to lift and move future.Connection
and future.Engine fully into sqlalchemy.engine.base. This
removes lots of engine concepts, including:
* autocommit
* Connection running without a transaction, autobegin
is now present in all cases
* most "autorollback" is obsolete
* Core-level subtransactions (i.e. MarkerTransaction)
* "branched" connections, copies of connections
* execution_options() returns self, not a new connection
* old argument formats, distill_params(), simplifies calling
scheme between engine methods
* before/after_execute() events (oriented towards compiled constructs)
don't emit for exec_driver_sql(). before/after_cursor_execute()
is still included for this
* old helper methods superseded by context managers, connection.transaction(),
engine.transaction() engine.run_callable()
* ancient engine-level reflection methods has_table(), table_names()
* sqlalchemy.testing.engines.proxying_engine
References: #7257
Change-Id: Ib20ed816642d873b84221378a9ec34480e01e82c
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* fix: lib/sqlalchemy/sql/lambdas.py
* fix: lib/sqlalchemy/sql/compiler.py
* fix: lib/sqlalchemy/sql/selectable.py
* fix: lib/sqlalchemy/orm/relationships.py
* fix: lib/sqlalchemy/dialects/mssql/base.py
* fix: lib/sql/test_compiler.py
* fix: lib/sqlalchemy/testing/requirements.py
* fix: lib/sqlalchemy/orm/path_registry.py
* fix: lib/sqlalchemy/dialects/postgresql/psycopg2.py
* fix: lib/sqlalchemy/cextension/immutabledict.c
* fix: lib/sqlalchemy/cextension/resultproxy.c
* fix: ./lib/sqlalchemy/dialects/oracle/cx_oracle.py
* fix: examples/versioned_rows/versioned_rows_w_versionid.py
* fix: examples/elementtree/optimized_al.py
* fix: test/orm/test_attribute.py
* fix: test/sql/test_compare.py
* fix: test/sql/test_type_expression.py
* fix: capitalization in test/dialect/mysql/test_compiler.py
* fix: typos in test/dialect/postgresql/test_reflection.py
* fix: typo in tox.ini comment
* fix: typo in /lib/sqlalchemy/orm/decl_api.py
* fix: typo in test/orm/test_update_delete.py
* fix: self-induced typo
* fix: typo in test/orm/test_query.py
* fix: typos in test/dialect/mssql/test_types.py
* fix: typo in test/sql/test_types.py
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Fixed issue in lambda caching system where an element of a query that
produces no cache key, like a custom option or clause element, would still
populate the expression in the "lambda cache" inappropriately.
This was discovered as part of :ticket:`6887` but is a separate
issue.
References: #6887
Change-Id: I1665f4320254ddc63a0abf3088e9daeaffbd1840
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Also replace http://pypi.python.org/pypi with https://pypi.org/project
Change-Id: I84b5005c39969a82140706472989f2a30b0c7685
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Adjusted the logic added as part of :ticket:`6397` in 1.4.12 so that
internal mutation of the :class:`.BindParameter` object occurs within the
clause construction phase as it did before, rather than in the compilation
phase. In the latter case, the mutation still produced side effects against
the incoming construct and additionally could potentially interfere with
other internal mutation routines.
In order to solve the issue of the correct operator being present
on the BindParameter.expand_op, we necessarily have to expand the
BinaryExpression._negate() routine to flip the operator on the
BindParameter also.
Fixes: #6460
Change-Id: I1e53a9aeee4de4fc11af51d7593431532731561b
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Fixed regression in ``selectinload`` loader strategy that would cause it to
cache its internal state incorrectly when handling relationships that join
across more than one column, such as when using a composite foreign key.
The invalid caching would then cause other loader operations to fail.
Fixes: #6410
Change-Id: I9f95ccca3553e7fd5794c619be4cf85c02b04626
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Executing a :class:`_sql.Subquery` using :meth:`_engine.Connection.execute`
is deprecated and will emit a deprecation warning; this use case was an
oversight that should have been removed from 1.4. The operation will now
execute the underlying :class:`_sql.Select` object directly for backwards
compatibility. Similarly, the :class:`_sql.CTE` class is also not
appropriate for execution. In 1.3, attempting to execute a CTE would result
in an invalid "blank" SQL statement being executed; since this use case was
not working it now raises :class:`_exc.ObjectNotExecutableError`.
Previously, 1.4 was attempting to execute the CTE as a statement however it
was working only erratically.
The change also breaks out StatementRole from ReturnsRowsRole, as these
roles should not be in the same lineage (some statements don't return
rows, the whole class of ReturnsRows that are from clauses are
not statements). Consolidate StatementRole and
CoerceTextStatementRole as there's no usage difference between
these. Simplify some old tests that were trying to make
sure that "execution options" didn't transmit from a cte/subquery
out to a select; as cte/subuqery() aren't executable in any case
the options are removed.
Fixes: #6204
Change-Id: I62613b7ab418afdd22c409eae75659e3f52fb65f
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Fixed a bug where python 2.7.5 (default on CentOS 7) wasn't able to import
sqlalchemy, because on this version of Python ``exec "statement"`` and
``exec("statement")`` do not behave the same way. The compatibility
``exec_()`` function was used instead.
Fixes: #6069
Closes: #6112
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/6112
Pull-request-sha: 4e951f9278eb462d1432a92b7bad93b973e4e2a5
Change-Id: I34e00250e874368e83c3e992be80e989a3c4f054
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Fixed a critical regression in the relationship lazy loader where the SQL
criteria used to fetch a related many-to-one object could go stale in
relation to other memoized structures within the loader if the mapper had
configuration changes, such as can occur when mappers are late configured
or configured on demand, producing a comparison to None and returning no
object. Huge thanks to Alan Hamlett for their help tracking this down late
into the night.
The primary change is that mapper._get_clause() uses a fixed name
for its bound parameters, which is memoized under a lambda statement
in the case of many-to-one lazy loading. This has implications for some other
logic namely the .compare() used by loader strategies to determine
use_get needed to be adjusted.
This change also repairs the lambda module's behavior of removing
the "required" flag from bound parameters, which caused this issue
to also fail silently rather than issuing an error for a required
bind parameter.
Fixes: #6055
Change-Id: I19e1aba9207a049873e0f13c19bad7541e223cfd
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These were revealed by running `pylint --disable all --enable spelling --spelling-dict en_US` over all sources.
Closes: #5868
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5868
Pull-request-sha: bb249195d92e3b806e81ecf1192d5a1b3cd5db48
Change-Id: I96080ec93a9fbd20ce21e9e16265b3c77f22bb14
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Change-Id: Ic5bb19ca8be3cb47c95a0d3315d84cb484bac47c
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1. Improve coercions._deep_is_literal to check sequences
for clause elements, thus allowing a phrase like
lambda: col.in_([literal("x"), literal("y")]) to be handled
2. revise closure variable caching completely. All variables
entering must be part of a closure cache key or rejected.
only objects that can be resolved to HasCacheKey or FunctionType
are accepted; all other types are rejected. This adds a high
degree of strictness to lambdas and will make them a little more
awkward to use in some cases, however prevents several classes
of critical issues:
a. previously, a lambda that had an expression derived from
some kind of state, like "self.x", or "execution_context.session.foo"
would produce a closure cache key from "self" or "execution_context",
objects that can very well be per-execution and would therefore
cause a AnalyzedFunction objects to overflow. (memory won't leak
as it looks like an LRUCache is already used for these)
b. a lambda, such as one used within DeferredLamdaElement, that
produces different SQL expressions based on the arguments
(which is in fact what it's supposed to do), however it would
through the use of conditionals produce different bound parameter
combinations, leading to literal parameters not tracked properly.
These are now rejected as uncacheable whereas previously they would
again be part of the closure cache key, causing an overflow of
AnalyizedFunction objects.
3. Ensure non-mapped mixins are handled correctly by
with_loader_criteria().
4. Fixed bug in lambda SQL system where we are not supposed to allow a Python
function to be embedded in the lambda, since we can't predict a bound value
from it. While there was an error condition added for this, it was not
tested and wasn't working; an informative error is now raised.
5. new docs for lambdas
6. consolidated changelog for all of these
Fixes: #5760
Fixes: #5765
Fixes: #5766
Fixes: #5768
Fixes: #5770
Change-Id: Iedaa636c3225fad496df23b612c516c8ab247ab7
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Fixed bug in lambda SQL feature, used by ORM
:meth:`_orm.with_loader_criteria` as well as available generally in the SQL
expression language, where assigning a boolean value True/False to a
variable would cause the query-time expression calculation to fail, as it
would produce a SQL expression not compatible with a bound value.
Fixed issue where the :attr:`_orm.ORMExecuteState.is_relationship_load`
parameter would not be set correctly for many lazy loads, all
selectinloads, etc. The flag is essential in order to test if options
should be added to statements or if they would already have been propagated
via relationship loads.
Fixes: #5763
Fixes: #5764
Change-Id: I66aafbef193f892ff75ede0670698647b7475482
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It's better, the majority of these changes look more readable to me.
also found some docstrings that had formatting / quoting issues.
Change-Id: I582a45fde3a5648b2f36bab96bad56881321899b
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Building on newly robust lambdas in
I29a513c98917b1d503abfdd61e6b6e8800851aa8,
convert key loading off of the "baked" system so that baked
is no longer used by the ORM.
Change-Id: I3abfb45dd6e50f84f29d39434caa0b550ce27864
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in order to accommodate relationship loaders
with lambda caching, a lot more is needed. This is
a full refactor of the lambda system such that it
now has two levels of caching; the first level caches what
can be known from the __code__ element, then the next level
of caching is against the lambda itself and the contents
of __closure__. This allows for the elements inside
the lambdas, like columns and entities, to change and
then be part of the cache key. Lazy/selectinloads' use of
baked queries had to add distinct cache key elements,
which was attempted here but overall things needed to be
more robust than that.
This commit is broken out from the very long and sprawling
commit at Id6b5c03b1ce9ddb7b280f66792212a0ef0a1c541 .
Change-Id: I29a513c98917b1d503abfdd61e6b6e8800851aa8
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The coercions system allows us to add in lambdas as arguments
to Core and ORM elements without changing them at all. By allowing
the lambda to produce a deterministic cache key where we can also
cheat and yank out literal parameters means we can move towards
having 90% of "baked" functionality in a clearer way right in
Core / ORM.
As a second step, we can have whole statements inside the lambda,
and can then add generation with __add__(), so then we have
100% of "baked" functionality with full support of ad-hoc
literal values.
Adds some more short_selects tests for the moment for comparison.
Other tweaks inside cache key generation as we're trying to
approach a certain level of performance such that we can
remove the use of "baked" from the loader strategies.
As we have not yet closed #4639, however the caching feature
has been fully integrated as of
b0cfa7379cf8513a821a3dbe3028c4965d9f85bd, we will also
add complete caching documentation here and close that issue
as well.
Closes: #4639
Fixes: #5380
Change-Id: If91f61527236fd4d7ae3cad1f24c38be921c90ba
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