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.. deprecated:: 0.7
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    Usage::

        class MyListener(PoolListener):
            def connect(self, dbapi_con, con_record):
                '''perform connect operations'''
            # etc.

        # create a new pool with a listener
        p = QueuePool(..., listeners=[MyListener()])

        # add a listener after the fact
        p.add_listener(MyListener())

        # usage with create_engine()
        e = create_engine("url://", listeners=[MyListener()])

    All of the standard connection :class:`~sqlalchemy.pool.Pool` types can
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    creation, pool check-out and check-in.  There are no events fired
    when a connection closes.

    For any given DB-API connection, there will be one ``connect``
    event, `n` number of ``checkout`` events, and either `n` or `n - 1`
    ``checkin`` events.  (If a ``Connection`` is detached from its
    pool via the ``detach()`` method, it won't be checked back in.)

    These are low-level events for low-level objects: raw Python
    DB-API connections, without the conveniences of the SQLAlchemy
    ``Connection`` wrapper, ``Dialect`` services or ``ClauseElement``
    execution.  If you execute SQL through the connection, explicitly
    closing all cursors and other resources is recommended.

    Events also receive a ``_ConnectionRecord``, a long-lived internal
    ``Pool`` object that basically represents a "slot" in the
    connection pool.  ``_ConnectionRecord`` objects have one public
    attribute of note: ``info``, a dictionary whose contents are
    scoped to the lifetime of the DB-API connection managed by the
    record.  You can use this shared storage area however you like.

    There is no need to subclass ``PoolListener`` to handle events.
    Any class that implements one or more of these methods can be used
    as a pool listener.  The ``Pool`` will inspect the methods
    provided by a listener object and add the listener to one or more
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            def cursor_execute(self, execute, cursor, statement,
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    The ``execute`` argument is a function that will fulfill the default
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