Zope application schema generations
Project description
zope.generations
Generations are a way of updating objects in the database when the application schema changes. An application schema is essentially the structure of data, the structure of classes in the case of ZODB or the table descriptions in the case of a relational database.
See https://zopegenerations.readthedocs.io/ for complete documentation.
CHANGES
5.1.0 (2022-02-11)
Drop support for Python 3.4.
Add support for Python 3.8, 3.9 and 3.10.
5.0.0 (2019-09-23)
Add support for transaction managers operating in explicit mode. Schema managers were previously required not to commit transactions in their evolve or install methods, but a loophole was open to allow them to commit “if there were no subsequent operations”. That loophole is now closed, at least in explicit mode. See issue 8.
4.1.0 (2018-10-23)
Add support for Python 3.7.
4.0.0 (2017-07-20)
Dropped support for Python 2.6 and 3.3.
Added support for Python 3.4, 3.5, 3.6, PyPy2 and PyPy3.
4.0.0a1 (2013-02-25)
Added support for Python 3.3.
Replaced deprecated zope.interface.implements usage with equivalent zope.interface.implementer decorator.
Dropped support for Python 2.4 and 2.5.
3.7.1 (2011-12-22)
Removed buildout part which was used during development but does not compile on Windows.
Generation scripts add a transaction note.
3.7.0 (2010-09-18)
Initial release extracted from zope.app.generations.
Generations key (stored in database root) has been changed from zope.app.generations to zope.generations. Migration is done when evolve is run the first time by coping the existing generations data over to the new key. So the old and the new key can be used in parallel.
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