Nti.zope-catalog

==================

- Nothing changed yet.

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- Drop support for Python 3.9.
- Use native namespace packages.

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- Drop support for Python 2. We now only support Python 3.9 and above.
- Add support for Python 3.10, 11, 12, and 13.
- Remove dependency on ``zopyx.txng3.ext``.
- Remove dependency on ``pkg_resources``.

==================

- Fix the ``ExtentFilteredSet`` to only unindex documents that were
previously indexed. This avoids an extra ``readCurrent`` call. See
`issue 12 <https://github.com/NextThought/nti.zope_catalog/issues/12>`_.

==================

- Add support for Python 3.7, 3.8 and 3.9.

Note that ``zopyx.txng3.ext`` version 4.0.0, the current version at
this writing, may or may not build on CPython 3, depending on how
your compiler and compiler options treat undefined functions.
See `this issue <https://github.com/zopyx/zopyx.txng3.ext/issues/10>`_.

Also note that both PyPy 3.6 and 3.7 (7.3.4) are known to crash when
running the test suite. PyPy2 7.3.4 runs the test suite fine.

- When updating indexes in a catalog, first check if the type of each
object to be visited implements ``INoAutoIndex``. If it does, we can
avoid prematurely activating persistent ghost objects. See `issue 8
<https://github.com/NextThought/nti.zope_catalog/issues/8>`_.

- Require ZODB 5 in order to use the new ``prefetch()`` method.

- When adding or updating an index in a catalog, use ZODB's prefetch
method to grab chunks of object state data from the database. This
can be substantially faster than making requests one at a time. This
introduces a new class ``CatalogPrefetchIterator`` that may be
useful in other circumstances. See `issue 7
<https://github.com/NextThought/nti.zope_catalog/issues/8>`_.

==================

- Rename ``TimestampToNormalized64BitIntNormalizer`` to
``TimestampTo64BitIntNormalizer`` for consistency.
- Make ``TimestampTo64BitIntNormalizer`` subclass
``TimestampNormalizer`` for simplicity.
- Rename ``FloatToNormalized64BitIntNormalizer`` to
``PersistentFloatTo64BitIntNormalizer`` for consistency and to
reflect its purpose.
- Make ``PersistentFloatTo64BitIntNormalizer`` subclass
``FloatTo64BitIntNormalizer``.
- Add ``IDeferredCatalog`` and an implementation in
``DeferredCatalog`` to allow creating catalog objects that don't
participate in event subscription-based indexing. This replaces
``IMetadataIndex``, which is now an alias for this object. See
`issue 3 <https://github.com/NextThought/nti.zope_catalog/pull/3>`_.