httk.store.backend.sqlite.hooks
===============================

.. py:module:: httk.store.backend.sqlite.hooks

.. autoapi-nested-parse::

   SQLite engine hooks: the per-dialect behavior the neutral SQL engine dispatches to.

   :mod:`httk.store.backend.sql.engine` keeps only neutral dialect dispatch; the
   SQLite-specific bodies live here and are imported lazily on first use by the
   ``_DIALECT_HOOKS`` registry in :mod:`httk.store.backend.sql.engine`.



Functions
---------

.. autoapisummary::

   httk.store.backend.sqlite.hooks.install_engine_functions
   httk.store.backend.sqlite.hooks.connection_uses_autocommit


Module Contents
---------------

.. py:function:: install_engine_functions(engine)

   Install the exact-fraction scalar function on every SQLite connection.

   Fraction values are persisted canonically as text because SQL integer
   products can overflow long before a valid Python :class:`~fractions.Fraction`
   does; ``httk_fraction_scaled_equal`` preserves exact comparisons without
   touching presentation float columns.

   :param engine: The SQLite SQLAlchemy engine to install the function on.
   :return: None.


.. py:function:: connection_uses_autocommit(connection)

   Return whether the live SQLite DBAPI connection is in autocommit mode.

   ``sqlite3.Connection.isolation_level is None`` is SQLite's documented
   autocommit mode; the SQLAlchemy checks cover alternate DBAPI wrappers while
   still requiring the live connection to agree.

   :param connection: The live SQLite SQLAlchemy connection to inspect.
   :return: Whether the underlying DBAPI connection is in autocommit mode.