delta/python-packages/sqlalchemy.git/examples/versioned_history, branch 2020_tutorial

Rename py.test to pytest

2020-04-16T22:06:36+00:00

Change-Id: I431e1ef41e26d490343204a75a5c097768749768

Simplified module pre-loading strategy and made it linter friendly

2020-03-07T22:50:45+00:00

Introduced a modules registry to register modules that should be lazily loaded
in the package init. This ensures that they are in the system module cache,
avoiding potential thread safety issues as when importing them directly
in the function that uses them. The module registry is used to obtain
these modules directly, ensuring that the all the lazily loaded modules
are resolved at the proper time

This replaces dependency_for decorator and the dependencies decorator logic,
removing the need to pass the resolved modules as arguments of the
decodated functions and removes possible errors caused by linters.

Fixes: #4689
Fixes: #4656
Change-Id: I2e291eba4297867fc0ddb5d875b9f7af34751d01

Integrate mapper-level version_id_col with versioned_history

2020-01-10T18:19:05+00:00

as the versioned_history example supplies an integer version
counter for the purposes of generating an audit trail, this
counter is also suited to be used for optimistic concurrency
detection using the version_id_col feature.   Build upon
the test that was first added in ac54ba0f2d8df5a76b6852841b6b3321c0e6c0e2
to provide a flag and some basic documentation.

Fixes: #2861
Change-Id: I50236beae4c49b33ada8fdcc4c524273b4e21c75

Fix typos

2019-07-21T00:51:29+00:00

Use py.test for versioned_history tests, nose no longer runs

2019-05-25T13:14:45+00:00

without warnings under python 3

Fixes: #4697
Change-Id: I46d395d3b6642acd9317e27d6a5723ae5201e877

Post black reformatting

2019-01-06T23:23:11+00:00

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

Run black -l 79 against all source files

2019-01-06T17:34:50+00:00

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

- modernize versioning examples

2018-05-05T22:21:08+00:00

- add new example versioned_rows_w_versionid

Change-Id: I592cd5eb7db50162b4c4ad6191813d9def2b6d7c

Set autoincrement to False; use sqlite_autoincrement in versioned_history

2017-01-09T23:00:33+00:00

Ensure that the history table sets autoincrement=False, since these values
are copied in all cases; the flag will emit an error as of 1.1 if the
primary key is composite.   Additionally, use the sqlite_autoincrement flag
so that SQLite uses unique primary key identifiers for new rows even if
some rows have been deleted.

Fixes: #3872
Change-Id: I65912eb394b3b69d7f4e3c098f4f948b0a7a5374
Pull-request: https://bitbucket.org/zzzeek/sqlalchemy/pull-requests/93

- Fixed two issues in the "history_meta" example where history tracking

2015-08-24T14:54:09+00:00

could encounter empty history, and where a column keyed to an alternate
attribute name would fail to track properly.  Fixes courtesy
Alex Fraser.