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<01><00>t
<00><00>
rZr
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a<>Build DB-API compatible connection arguments.

        Given a :class:`.URL` object, returns a tuple
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        ``connect()`` function.

        The method typically makes use of the
        :meth:`.URL.translate_connect_args`
        method in order to generate a dictionary of options.

        The default implementation is::

            def create_connect_args(self, url):
                opts = url.translate_connect_args()
                opts.update(url.query)
                return ([], opts)

        :param url: a :class:`.URL` object

        :return: a tuple of ``(*args, **kwargs)`` which will be passed to the
         :meth:`.Dialect.connect` method.

        .. seealso::

            :meth:`.URL.translate_connect_args`

        r
<00>r\<00>urls  rN<00>create_connect_argszDialect.create_connect_args<67>s
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<01><00>t
<00><00>
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a<>Import the DBAPI module that is used by this dialect.

        The Python module object returned here will be assigned as an
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        ``.dbapi``.

        .. versionchanged:: 2.0  The :meth:`.Dialect.import_dbapi` class
           method is renamed from the previous method ``.Dialect.dbapi()``,
           which would be replaced at dialect instantiation time by the
           DBAPI module itself, thus using the same name in two different ways.
           If a ``.Dialect.dbapi()`` classmethod is present on a third-party
           dialect, it will be used and a deprecation warning will be emitted.

        r
<00>
<01>clss
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<00><00> "<22>#<23>#rMc
<01><00>t
<00><00>
)
a4
Transform a generic type to a dialect-specific type.

        Dialect classes will usually use the
        :func:`_types.adapt_type` function in the types module to
        accomplish this.

        The returned result is cached *per dialect class* so can
        contain no dialect-instance state.

        r
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<00><00>"<22>#<23>#rMc
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        connection.

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        other properties.

        The connection passed here is a SQLAlchemy Connection object,
        with full capabilities.

        The initialize() method of the base dialect should be called via
        super().

        .. note:: as of SQLAlchemy 1.4, this method is called **before**
           any :meth:`_engine.Dialect.on_connect` hooks are called.

        NrL<00>r\<00>
connections  rN<00>
initializezDialect.initialize<00><00>rMc
<01><00>yrZrL)r\<00>method_names  rN<00>_overrides_defaultzDialect._overrides_default(r}rMc
<01><00>t
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a<>
Return information about columns in ``table_name``.

        Given a :class:`_engine.Connection`, a string
        ``table_name``, and an optional string ``schema``, return column
        information as a list of dictionaries
        corresponding to the :class:`.ReflectedColumn` dictionary.

        This is an internal dialect method. Applications should use
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        r
<00>r\rz
<00>
table_name<EFBFBD>schema<6D>kws     rN<00>get_columnszDialect.get_columns*<00>
<00><00>&"<22>#<23>#rM)r<>
<00>filter_namesc
<01><00>t
<00><00>
)
a<>Return information about columns in all tables in the
        given ``schema``.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_multi_columns`.

        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
<00>r\rz
r<>
r<>
r<>
s     rN<00>get_multi_columnszDialect.get_multi_columns?<00>
<00><00>4"<22>#<23>#rMc
<01><00>t
<00><00>
)
a<>
Return information about the primary key constraint on
        table_name`.

        Given a :class:`_engine.Connection`, a string
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        :class:`.ReflectedPrimaryKeyConstraint` dictionary.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_pk_constraint`.

        r
r<>
s     rN<00>get_pk_constraintzDialect.get_pk_constraint[r<>
rMc
<01><00>t
<00><00>
)
a<>Return information about primary key constraints in
        all tables in the given ``schema``.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_multi_pk_constraint`.

        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_pk_constraintzDialect.get_multi_pk_constraintp<00>
<00><00>2"<22>#<23>#rMc
<01><00>t
<00><00>
)
a<>
Return information about foreign_keys in ``table_name``.

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        :meth:`_engine.Inspector.get_foreign_keys`.
        r
r<>
s     rN<00>get_foreign_keyszDialect.get_foreign_keys<79><00>
<00><00>$"<22>#<23>#rMc
<01><00>t
<00><00>
)
a<>Return information about foreign_keys in all tables
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        This is an internal dialect method. Applications should use
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        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_foreign_keyszDialect.get_multi_foreign_keys<79>r<>
rMc
<01><00>t
<00><00>
)
z<>Return a list of table names for ``schema``.

        This is an internal dialect method. Applications should use
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        r
<00>r\rz
r<>
r<>
s    rN<00>get_table_nameszDialect.get_table_names<65><00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
z<>Return a list of temporary table names on the given connection,
        if supported by the underlying backend.

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        r
r<>
s    rN<00>get_temp_table_nameszDialect.get_temp_table_names<65><00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
a
Return a list of all non-materialized view names available in the
        database.

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        :param schema: schema name to query, if not the default schema.

        r
r<>
s    rN<00>get_view_nameszDialect.get_view_names<65><00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
aF
Return a list of all materialized view names available in the
        database.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_materialized_view_names`.

        :param schema: schema name to query, if not the default schema.

         .. versionadded:: 2.0

        r
r<>
s    rN<00>get_materialized_view_namesz#Dialect.get_materialized_view_names<65><00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
a*
Return a list of all sequence names available in the database.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_sequence_names`.

        :param schema: schema name to query, if not the default schema.

        .. versionadded:: 1.4
        r
r<>
s    rN<00>get_sequence_nameszDialect.get_sequence_names<65>r<>
rMc
<01><00>t
<00><00>
)
z<>Return a list of temporary view names on the given connection,
        if supported by the underlying backend.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_temp_view_names`.

        r
r<>
s    rN<00>get_temp_view_nameszDialect.get_temp_view_namesr<>
rMc
<01><00>t
<00><00>
)
z<>Return a list of all schema names available in the database.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_schema_names`.
        r
)r\rz
r<>
s   rN<00>get_schema_nameszDialect.get_schema_names<00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
aG
Return plain or materialized view definition.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_view_definition`.

        Given a :class:`_engine.Connection`, a string
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        definition.
        r
)r\rz
<00>	view_namer<65>
r<>
s     rN<00>get_view_definitionzDialect.get_view_definition<00>
<00><00>""<22>#<23>#rMc
<01><00>t
<00><00>
)
a<>
Return information about indexes in ``table_name``.

        Given a :class:`_engine.Connection`, a string
        ``table_name`` and an optional string ``schema``, return index
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        :class:`.ReflectedIndex` dictionary.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_indexes`.
        r
r<>
s     rN<00>get_indexeszDialect.get_indexes+r<>
rMc
<01><00>t
<00><00>
)
a<>Return information about indexes in in all tables
        in the given ``schema``.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_multi_indexes`.

        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_indexeszDialect.get_multi_indexes?r<>
rMc
<01><00>t
<00><00>
)
a<>
Return information about unique constraints in ``table_name``.

        Given a string ``table_name`` and an optional string ``schema``, return
        unique constraint information as a list of dicts corresponding
        to the :class:`.ReflectedUniqueConstraint` dictionary.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_unique_constraints`.
        r
r<>
s     rN<00>get_unique_constraintszDialect.get_unique_constraints[r<>
rMc
<01><00>t
<00><00>
)
a<>Return information about unique constraints in all tables
        in the given ``schema``.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_multi_unique_constraints`.

        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_unique_constraintsz$Dialect.get_multi_unique_constraintsnr<>
rMc
<01><00>t
<00><00>
)
a<>
Return information about check constraints in ``table_name``.

        Given a string ``table_name`` and an optional string ``schema``, return
        check constraint information as a list of dicts corresponding
        to the :class:`.ReflectedCheckConstraint` dictionary.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_check_constraints`.

        r
r<>
s     rN<00>get_check_constraintszDialect.get_check_constraints<74>r<>
rMc
<01><00>t
<00><00>
)
a<>Return information about check constraints in all tables
        in the given ``schema``.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_multi_check_constraints`.

        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_check_constraintsz#Dialect.get_multi_check_constraints<74>r<>
rMc
<01><00>t
<00><00>
)
z<>Return a dictionary of options specified when ``table_name``
        was created.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_table_options`.
        r
r<>
s     rN<00>get_table_optionszDialect.get_table_options<6E>r<>
rMc
<01><00>t
<00><00>
)
a<>Return a dictionary of options specified when the tables in the
        given schema were created.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.get_multi_table_options`.

        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_table_optionszDialect.get_multi_table_options<6E>r<>
rMc
<01><00>t
<00><00>
)
aReturn the "comment" for the table identified by ``table_name``.

        Given a string ``table_name`` and an optional string ``schema``, return
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        :class:`.ReflectedTableComment` dictionary.

        This is an internal dialect method. Applications should use
        :meth:`.Inspector.get_table_comment`.

        :raise: ``NotImplementedError`` for dialects that don't support
         comments.

        .. versionadded:: 1.2

        r
r<>
s     rN<00>get_table_commentzDialect.get_table_comment<6E>s
<00><00>."<22>#<23>#rMc
<01><00>t
<00><00>
)
a<>Return information about the table comment in all tables
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        This is an internal dialect method. Applications should use
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        .. note:: The :class:`_engine.DefaultDialect` provides a default
          implementation that will call the single table method for
          each object returned by :meth:`Dialect.get_table_names`,
          :meth:`Dialect.get_view_names` or
          :meth:`Dialect.get_materialized_view_names` depending on the
          provided ``kind``. Dialects that want to support a faster
          implementation should implement this method.

        .. versionadded:: 2.0

        r
r<>
s     rN<00>get_multi_table_commentzDialect.get_multi_table_comment<6E>r<>
rMc
<01><00>t
<00><00>
)
z<>convert the given name to lowercase if it is detected as
        case insensitive.

        This method is only used if the dialect defines
        requires_name_normalize=True.

        r
<00>r\r<>s  rN<00>normalize_namezDialect.normalize_namer
rMc
<01><00>t
<00><00>
)
z<>convert the given name to a case insensitive identifier
        for the backend if it is an all-lowercase name.

        This method is only used if the dialect defines
        requires_name_normalize=True.

        r
r<>
s  rN<00>denormalize_namezDialect.denormalize_name#r
rMc
<01><00>t
<00><00>
)
a
For internal dialect use, check the existence of a particular table
        or view in the database.

        Given a :class:`_engine.Connection` object, a string table_name and
        optional schema name, return True if the given table exists in the
        database, False otherwise.

        This method serves as the underlying implementation of the
        public facing :meth:`.Inspector.has_table` method, and is also used
        internally to implement the "checkfirst" behavior for methods like
        :meth:`_schema.Table.create` and :meth:`_schema.MetaData.create_all`.

        .. note:: This method is used internally by SQLAlchemy, and is
           published so that third-party dialects may provide an
           implementation. It is **not** the public API for checking for table
           presence. Please use the :meth:`.Inspector.has_table` method.

        .. versionchanged:: 2.0:: :meth:`_engine.Dialect.has_table` now
           formally supports checking for additional table-like objects:

           * any type of views (plain or materialized)
           * temporary tables of any kind

           Previously, these two checks were not formally specified and
           different dialects would vary in their behavior.   The dialect
           testing suite now includes tests for all of these object types,
           and dialects to the degree that the backing database supports views
           or temporary tables should seek to support locating these objects
           for full compliance.

        r
r<>
s     rN<00>	has_tablezDialect.has_table-s<00><00>N
"<22>#<23>#rMc
<01><00>t
<00><00>
)
a<>Check the existence of a particular index name in the database.

        Given a :class:`_engine.Connection` object, a string
        ``table_name`` and string index name, return ``True`` if an index of
        the given name on the given table exists, ``False`` otherwise.

        The :class:`.DefaultDialect` implements this in terms of the
        :meth:`.Dialect.has_table` and :meth:`.Dialect.get_indexes` methods,
        however dialects can implement a more performant version.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.has_index`.

        .. versionadded:: 1.4

        r
)r\rz
r<>
<00>
index_namer<EFBFBD>
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s      rN<00>	has_indexzDialect.has_indexVr<>
rMc
<01><00>t
<00><00>
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ap
Check the existence of a particular sequence in the database.

        Given a :class:`_engine.Connection` object and a string
        `sequence_name`, return ``True`` if the given sequence exists in
        the database, ``False`` otherwise.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.has_sequence`.
        r
)r\rz
<00>
sequence_namer<65>
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s     rN<00>has_sequencezDialect.has_sequenceqr<>
rMc
<01><00>t
<00><00>
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avCheck the existence of a particular schema name in the database.

        Given a :class:`_engine.Connection` object, a string
        ``schema_name``, return ``True`` if a schema of the
        given exists, ``False`` otherwise.

        The :class:`.DefaultDialect` implements this by checking
        the presence of ``schema_name`` among the schemas returned by
        :meth:`.Dialect.get_schema_names`,
        however dialects can implement a more performant version.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.has_schema`.

        .. versionadded:: 2.0

        r
)r\rz
<00>schema_namer<65>
s    rN<00>
has_schemazDialect.has_schema<6D>s
<00><00>*"<22>#<23>#rMc
<01><00>t
<00><00>
)
z<>Retrieve the server version info from the given connection.

        This is used by the default implementation to populate the
        "server_version_info" attribute and is called exactly
        once upon first connect.

        r
ry
s  rN<00>_get_server_version_infoz Dialect._get_server_version_info<66><00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
a
Return the string name of the currently selected schema from
        the given connection.

        This is used by the default implementation to populate the
        "default_schema_name" attribute and is called exactly
        once upon first connect.

        r
ry
s  rN<00>_get_default_schema_namez Dialect._get_default_schema_name<6D>r<>
rMc
<01><00>t
<00><00>
)
a<>
Provide an implementation of ``connection.begin()``, given a
        DB-API connection.

        The DBAPI has no dedicated "begin" method and it is expected
        that transactions are implicit.  This hook is provided for those
        DBAPIs that might need additional help in this area.

        :param dbapi_connection: a DBAPI connection, typically
         proxied within a :class:`.ConnectionFairy`.

        r
<00>r\<00>dbapi_connections  rN<00>do_beginzDialect.do_begin<69>r<>
rMc
<01><00>t
<00><00>
)
z<>Provide an implementation of ``connection.rollback()``, given
        a DB-API connection.

        :param dbapi_connection: a DBAPI connection, typically
         proxied within a :class:`.ConnectionFairy`.

        r
r<>
s  rN<00>do_rollbackzDialect.do_rollback<63>r<>
rMc
<01><00>t
<00><00>
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z<>Provide an implementation of ``connection.commit()``, given a
        DB-API connection.

        :param dbapi_connection: a DBAPI connection, typically
         proxied within a :class:`.ConnectionFairy`.

        r
r<>
s  rN<00>	do_commitzDialect.do_commit<69>r<>
rMc
<01><00>t
<00><00>
)
a<>
Provide an implementation of ``connection.close()`` that tries as
        much as possible to not block, given a DBAPI
        connection.

        In the vast majority of cases this just calls .close(), however
        for some asyncio dialects may call upon different API features.

        This hook is called by the :class:`_pool.Pool`
        when a connection is being recycled or has been invalidated.

        .. versionadded:: 1.4.41

        r
r<>
s  rN<00>do_terminatezDialect.do_terminate<74>r<>
rMc
<01><00>t
<00><00>
)
a 
Provide an implementation of ``connection.close()``, given a DBAPI
        connection.

        This hook is called by the :class:`_pool.Pool`
        when a connection has been
        detached from the pool, or is being returned beyond the normal
        capacity of the pool.

        r
r<>
s  rN<00>do_closezDialect.do_close<73>r<>
rMc
<01><00>t
<00><00>
rZr
r<>
s  rN<00>_do_ping_w_eventzDialect._do_ping_w_event<6E>rj
rMc
<01><00>t
<00><00>
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zNping the DBAPI connection and return True if the connection is
        usable.r
r<>
s  rN<00>do_pingzDialect.do_ping<6E><00>
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
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aJinvoke the cursor.setinputsizes() method with appropriate arguments

        This hook is called if the :attr:`.Dialect.bind_typing` attribute is
        set to the
        :attr:`.BindTyping.SETINPUTSIZES` value.
        Parameter data is passed in a list of tuples (paramname, dbtype,
        sqltype), where ``paramname`` is the key of the parameter in the
        statement, ``dbtype`` is the DBAPI datatype and ``sqltype`` is the
        SQLAlchemy type. The order of tuples is in the correct parameter order.

        .. versionadded:: 1.4

        .. versionchanged:: 2.0  - setinputsizes mode is now enabled by
           setting :attr:`.Dialect.bind_typing` to
           :attr:`.BindTyping.SETINPUTSIZES`.  Dialects which accept
           a ``use_setinputsizes`` parameter should set this value
           appropriately.


        r
)r\r|<00>list_of_tuples<65>contexts    rN<00>do_set_input_sizeszDialect.do_set_input_sizes<65>r<>
rMc

<01><00>t
<00><00>
)
z<>Create a two-phase transaction ID.

        This id will be passed to do_begin_twophase(),
        do_rollback_twophase(), do_commit_twophase().  Its format is
        unspecified.
        r
rts
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create_xidzDialect.create_xidr
rMc
<01><00>t
<00><00>
)
z<>Create a savepoint with the given name.

        :param connection: a :class:`_engine.Connection`.
        :param name: savepoint name.

        r
<00>r\rz
r<>s   rN<00>do_savepointzDialect.do_savepoint#r
rMc
<01><00>t
<00><00>
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z<>Rollback a connection to the named savepoint.

        :param connection: a :class:`_engine.Connection`.
        :param name: savepoint name.

        r
r<>
s   rN<00>do_rollback_to_savepointz Dialect.do_rollback_to_savepoint-r<>
rMc
<01><00>t
<00><00>
)
z<>Release the named savepoint on a connection.

        :param connection: a :class:`_engine.Connection`.
        :param name: savepoint name.
        r
r<>
s   rN<00>do_release_savepointzDialect.do_release_savepoint9s
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
z<>Begin a two phase transaction on the given connection.

        :param connection: a :class:`_engine.Connection`.
        :param xid: xid

        r
<00>r\rz
<00>xids   rN<00>do_begin_twophasezDialect.do_begin_twophaseBr
rMc
<01><00>t
<00><00>
)
z<>Prepare a two phase transaction on the given connection.

        :param connection: a :class:`_engine.Connection`.
        :param xid: xid

        r
r<>
s   rN<00>do_prepare_twophasezDialect.do_prepare_twophaseLr
rMc
<01><00>t
<00><00>
)
a3
Rollback a two phase transaction on the given connection.

        :param connection: a :class:`_engine.Connection`.
        :param xid: xid
        :param is_prepared: whether or not
         :meth:`.TwoPhaseTransaction.prepare` was called.
        :param recover: if the recover flag was passed.

        r
<00>r\rz
r<>
<00>is_prepared<65>recovers     rN<00>do_rollback_twophasezDialect.do_rollback_twophaseVr<>
rMc
<01><00>t
<00><00>
)
a2
Commit a two phase transaction on the given connection.


        :param connection: a :class:`_engine.Connection`.
        :param xid: xid
        :param is_prepared: whether or not
         :meth:`.TwoPhaseTransaction.prepare` was called.
        :param recover: if the recover flag was passed.

        r
r<>
s     rN<00>do_commit_twophasezDialect.do_commit_twophaseir<>
rMc
<01><00>t
<00><00>
)
z<>Recover list of uncommitted prepared two phase transaction
        identifiers on the given connection.

        :param connection: a :class:`_engine.Connection`.

        r
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s  rN<00>do_recover_twophasezDialect.do_recover_twophase}r
rMc
<01><00>t
<00><00>
)
z<>convert executemany parameters for an INSERT into an iterator
        of statement/single execute values, used by the insertmanyvalues
        feature.

        r
)r\rz
r|<00>	statementr<74><00>generic_setinputsizesr<73>
s       rN<00>!_deliver_insertmanyvalues_batchesz)Dialect._deliver_insertmanyvalues_batches<65>s
<00><00>"<22>#<23>#rMc
<01><00>t
<00><00>
)
zSProvide an implementation of ``cursor.executemany(statement,
        parameters)``.r
<00>r\r|rr<>r<>
s     rN<00>do_executemanyzDialect.do_executemany<6E>r<>
rMc
<01><00>t
<00><00>
)
zOProvide an implementation of ``cursor.execute(statement,
        parameters)``.r
r	s     rN<00>
do_executezDialect.do_execute<74>r<>
rMc
<01><00>t
<00><00>
)
z{Provide an implementation of ``cursor.execute(statement)``.

        The parameter collection should not be sent.

        r
)r\r|rr<>
s    rN<00>do_execute_no_paramszDialect.do_execute_no_params<6D>rw
rMc
<01><00>t
<00><00>
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zMReturn True if the given DB-API error indicates an invalid
        connectionr
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r|s    rN<00>
is_disconnectzDialect.is_disconnect<63>r<>
rMc

<01><00>t
<00><00>
)
a<>Establish a connection using this dialect's DBAPI.

        The default implementation of this method is::

            def connect(self, *cargs, **cparams):
                return self.dbapi.connect(*cargs, **cparams)

        The ``*cargs, **cparams`` parameters are generated directly
        from this dialect's :meth:`.Dialect.create_connect_args` method.

        This method may be used for dialects that need to perform programmatic
        per-connection steps when a new connection is procured from the
        DBAPI.


        :param \*cargs: positional parameters returned from the
         :meth:`.Dialect.create_connect_args` method

        :param \*\*cparams: keyword parameters returned from the
         :meth:`.Dialect.create_connect_args` method.

        :return: a DBAPI connection, typically from the :pep:`249` module
         level ``.connect()`` function.

        .. seealso::

            :meth:`.Dialect.create_connect_args`

            :meth:`.Dialect.on_connect`

        r
)r\<00>cargs<67>cparamss   rN<00>connectzDialect.connect<63><00><00><00>@
"<22>#<23>#rMc
<01>"<00>|j
<00>S)
a&	return a callable which sets up a newly created DBAPI connection.

        This method is a new hook that supersedes the
        :meth:`_engine.Dialect.on_connect` method when implemented by a
        dialect.   When not implemented by a dialect, it invokes the
        :meth:`_engine.Dialect.on_connect` method directly to maintain
        compatibility with existing dialects.   There is no deprecation
        for :meth:`_engine.Dialect.on_connect` expected.

        The callable should accept a single argument "conn" which is the
        DBAPI connection itself.  The inner callable has no
        return value.

        E.g.::

            class MyDialect(default.DefaultDialect):
                # ...

                def on_connect_url(self, url):
                    def do_on_connect(connection):
                        connection.execute("SET SPECIAL FLAGS etc")

                    return do_on_connect

        This is used to set dialect-wide per-connection options such as
        isolation modes, Unicode modes, etc.

        This method differs from :meth:`_engine.Dialect.on_connect` in that
        it is passed the :class:`_engine.URL` object that's relevant to the
        connect args.  Normally the only way to get this is from the
        :meth:`_engine.Dialect.on_connect` hook is to look on the
        :class:`_engine.Engine` itself, however this URL object may have been
        replaced by plugins.

        .. note::

            The default implementation of
            :meth:`_engine.Dialect.on_connect_url` is to invoke the
            :meth:`_engine.Dialect.on_connect` method. Therefore if a dialect
            implements this method, the :meth:`_engine.Dialect.on_connect`
            method **will not be called** unless the overriding dialect calls
            it directly from here.

        .. versionadded:: 1.4.3 added :meth:`_engine.Dialect.on_connect_url`
           which normally calls into :meth:`_engine.Dialect.on_connect`.

        :param url: a :class:`_engine.URL` object representing the
         :class:`_engine.URL` that was passed to the
         :meth:`_engine.Dialect.create_connect_args` method.

        :return: a callable that accepts a single DBAPI connection as an
         argument, or None.

        .. seealso::

            :meth:`_engine.Dialect.on_connect`

        )
<01>
on_connectrl
s  rN<00>on_connect_urlzDialect.on_connect_url<72>s<00><00>v
<14><EFBFBD><EFBFBD> <20> rMc

<01><00>y
)a<>return a callable which sets up a newly created DBAPI connection.

        The callable should accept a single argument "conn" which is the
        DBAPI connection itself.  The inner callable has no
        return value.

        E.g.::

            class MyDialect(default.DefaultDialect):
                # ...

                def on_connect(self):
                    def do_on_connect(connection):
                        connection.execute("SET SPECIAL FLAGS etc")

                    return do_on_connect

        This is used to set dialect-wide per-connection options such as
        isolation modes, Unicode modes, etc.

        The "do_on_connect" callable is invoked by using the
        :meth:`_events.PoolEvents.connect` event
        hook, then unwrapping the DBAPI connection and passing it into the
        callable.

        .. versionchanged:: 1.4 the on_connect hook is no longer called twice
           for the first connection of a dialect.  The on_connect hook is still
           called before the :meth:`_engine.Dialect.initialize` method however.

        .. versionchanged:: 1.4.3 the on_connect hook is invoked from a new
           method on_connect_url that passes the URL that was used to create
           the connect args.   Dialects can implement on_connect_url instead
           of on_connect if they need the URL object that was used for the
           connection in order to get additional context.

        If None is returned, no event listener is generated.

        :return: a callable that accepts a single DBAPI connection as an
         argument, or None.

        .. seealso::

            :meth:`.Dialect.connect` - allows the DBAPI ``connect()`` sequence
            itself to be controlled.

            :meth:`.Dialect.on_connect_url` - supersedes
            :meth:`.Dialect.on_connect` to also receive the
            :class:`_engine.URL` object in context.

        NrLrts
 rNrzDialect.on_connect'	s<00><00>f
rMc
<01><00>t
<00><00>
)
a2Given a DBAPI connection, revert its isolation to the default.

        Note that this is a dialect-level method which is used as part
        of the implementation of the :class:`_engine.Connection` and
        :class:`_engine.Engine`
        isolation level facilities; these APIs should be preferred for
        most typical use cases.

        .. seealso::

            :meth:`_engine.Connection.get_isolation_level`
            - view current level

            :attr:`_engine.Connection.default_isolation_level`
            - view default level

            :paramref:`.Connection.execution_options.isolation_level` -
            set per :class:`_engine.Connection` isolation level

            :paramref:`_sa.create_engine.isolation_level` -
            set per :class:`_engine.Engine` isolation level

        r
r<>
s  rN<00>reset_isolation_levelzDialect.reset_isolation_level\	r<>
rMc
<01><00>t
<00><00>
)
a2Given a DBAPI connection, set its isolation level.

        Note that this is a dialect-level method which is used as part
        of the implementation of the :class:`_engine.Connection` and
        :class:`_engine.Engine`
        isolation level facilities; these APIs should be preferred for
        most typical use cases.

        If the dialect also implements the
        :meth:`.Dialect.get_isolation_level_values` method, then the given
        level is guaranteed to be one of the string names within that sequence,
        and the method will not need to anticipate a lookup failure.

        .. seealso::

            :meth:`_engine.Connection.get_isolation_level`
            - view current level

            :attr:`_engine.Connection.default_isolation_level`
            - view default level

            :paramref:`.Connection.execution_options.isolation_level` -
            set per :class:`_engine.Connection` isolation level

            :paramref:`_sa.create_engine.isolation_level` -
            set per :class:`_engine.Engine` isolation level

        r
)r\r<>
<00>levels   rN<00>set_isolation_levelzDialect.set_isolation_levelw	rrMc
<01><00>t
<00><00>
)
a<>Given a DBAPI connection, return its isolation level.

        When working with a :class:`_engine.Connection` object,
        the corresponding
        DBAPI connection may be procured using the
        :attr:`_engine.Connection.connection` accessor.

        Note that this is a dialect-level method which is used as part
        of the implementation of the :class:`_engine.Connection` and
        :class:`_engine.Engine` isolation level facilities;
        these APIs should be preferred for most typical use cases.


        .. seealso::

            :meth:`_engine.Connection.get_isolation_level`
            - view current level

            :attr:`_engine.Connection.default_isolation_level`
            - view default level

            :paramref:`.Connection.execution_options.isolation_level` -
            set per :class:`_engine.Connection` isolation level

            :paramref:`_sa.create_engine.isolation_level` -
            set per :class:`_engine.Engine` isolation level


        r
r<>
s  rN<00>get_isolation_levelzDialect.get_isolation_level<65>	s<00><00>B
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<01><00>t
d
<01>
<00>
)a<>Detect the current autocommit setting for a DBAPI connection.

        :param dbapi_connection: a DBAPI connection object
        :return: True if autocommit is enabled, False if disabled
        :rtype: bool

        This method inspects the given DBAPI connection to determine
        whether autocommit mode is currently enabled. The specific
        mechanism for detecting autocommit varies by database dialect
        and DBAPI driver, however it should be done **without** network
        round trips.

        .. note::

            Not all dialects support autocommit detection. Dialects
            that do not support this feature will raise
            :exc:`NotImplementedError`.

        z;This dialect cannot detect autocommit on a DBAPI connectionr
<00>r\<00>
dbapi_conns  rN<00>detect_autocommit_settingz!Dialect.detect_autocommit_setting<6E>	s<00><00>("<22>I<>
<EFBFBD>	
rMc
<01><00>t
<00><00>
)
a<>Given a DBAPI connection, return its isolation level, or
        a default isolation level if one cannot be retrieved.

        This method may only raise NotImplementedError and
        **must not raise any other exception**, as it is used implicitly upon
        first connect.

        The method **must return a value** for a dialect that supports
        isolation level settings, as this level is what will be reverted
        towards when a per-connection isolation level change is made.

        The method defaults to using the :meth:`.Dialect.get_isolation_level`
        method unless overridden by a dialect.

        .. versionadded:: 1.3.22

        r
r#s  rN<00>get_default_isolation_levelz#Dialect.get_default_isolation_level<65>	s
<00><00>("<22>#<23>#rMc
<01><00>t
<00><00>
)
areturn a sequence of string isolation level names that are accepted
        by this dialect.

        The available names should use the following conventions:

        * use UPPERCASE names.   isolation level methods will accept lowercase
          names but these are normalized into UPPERCASE before being passed
          along to the dialect.
        * separate words should be separated by spaces, not underscores, e.g.
          ``REPEATABLE READ``.  isolation level names will have underscores
          converted to spaces before being passed along to the dialect.
        * The names for the four standard isolation names to the extent that
          they are supported by the backend should be ``READ UNCOMMITTED``,
          ``READ COMMITTED``, ``REPEATABLE READ``, ``SERIALIZABLE``
        * if the dialect supports an autocommit option it should be provided
          using the isolation level name ``AUTOCOMMIT``.
        * Other isolation modes may also be present, provided that they
          are named in UPPERCASE and use spaces not underscores.

        This function is used so that the default dialect can check that
        a given isolation level parameter is valid, else raises an
        :class:`_exc.ArgumentError`.

        A DBAPI connection is passed to the method, in the unlikely event that
        the dialect needs to interrogate the connection itself to determine
        this list, however it is expected that most backends will return
        a hardcoded list of values.  If the dialect supports "AUTOCOMMIT",
        that value should also be present in the sequence returned.

        The method raises ``NotImplementedError`` by default.  If a dialect
        does not implement this method, then the default dialect will not
        perform any checking on a given isolation level value before passing
        it onto the :meth:`.Dialect.set_isolation_level` method.  This is
        to allow backwards-compatibility with third party dialects that may
        not yet be implementing this method.

        .. versionadded:: 2.0

        r
r#s  rN<00>get_isolation_level_valuesz"Dialect.get_isolation_level_values<65>	s<00><00>T
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<01><00>t
<00><00>
rZr
)r\r$rs   rN<00>_assert_and_set_isolation_levelz'Dialect._assert_and_set_isolation_level
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rMc

<01><00>|S)
a}
Given a URL, return the :class:`.Dialect` that will be used.

        This is a hook that allows an external plugin to provide functionality
        around an existing dialect, by allowing the plugin to be loaded
        from the url based on an entrypoint, and then the plugin returns
        the actual dialect to be used.

        By default this just returns the cls.

        rL<00>rq
rm
s  rN<00>get_dialect_clszDialect.get_dialect_cls
s	<00><00><13>
rMc
<01>$<00>|j
|
<01>
S)
a<>
Given a URL, return the :class:`.Dialect` that will be used by
        an async engine.

        By default this is an alias of :meth:`.Dialect.get_dialect_cls` and
        just returns the cls. It may be used if a dialect provides
        both a sync and async version under the same name, like the
        ``psycopg`` driver.

        .. versionadded:: 2

        .. seealso::

            :meth:`.Dialect.get_dialect_cls`

        )
r.r-s  rN<00>get_async_dialect_clszDialect.get_async_dialect_cls)
s<00><00>"<13>"<22>"<22>3<EFBFBD>'<27>'rMc

<01><00>y
)aJset up the provision.py module for this dialect.

        For dialects that include a provision.py module that sets up
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            def load_provisioning(cls):
                __import__("mydialect.provision")

        The default method assumes a module named ``provision.py`` inside
        the owning package of the current dialect, based on the ``__module__``
        attribute::

            @classmethod
            def load_provisioning(cls):
                package = ".".join(cls.__module__.split(".")[0:-1])
                try:
                    __import__(package + ".provision")
                except ImportError:
                    pass

        .. versionadded:: 1.3.14

        NrLrp
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<0A>CreateEnginePlugina<6E>A set of hooks intended to augment the construction of an
    :class:`_engine.Engine` object based on entrypoint names in a URL.

    The purpose of :class:`_engine.CreateEnginePlugin` is to allow third-party
    systems to apply engine, pool and dialect level event listeners without
    the need for the target application to be modified; instead, the plugin
    names can be added to the database URL.  Target applications for
    :class:`_engine.CreateEnginePlugin` include:

    * connection and SQL performance tools, e.g. which use events to track
      number of checkouts and/or time spent with statements

    * connectivity plugins such as proxies

    A rudimentary :class:`_engine.CreateEnginePlugin` that attaches a logger
    to an :class:`_engine.Engine` object might look like::


        import logging

        from sqlalchemy.engine import CreateEnginePlugin
        from sqlalchemy import event


        class LogCursorEventsPlugin(CreateEnginePlugin):
            def __init__(self, url, kwargs):
                # consume the parameter "log_cursor_logging_name" from the
                # URL query
                logging_name = url.query.get(
                    "log_cursor_logging_name", "log_cursor"
                )

                self.log = logging.getLogger(logging_name)

            def update_url(self, url):
                "update the URL to one that no longer includes our parameters"
                return url.difference_update_query(["log_cursor_logging_name"])

            def engine_created(self, engine):
                "attach an event listener after the new Engine is constructed"
                event.listen(engine, "before_cursor_execute", self._log_event)

            def _log_event(
                self,
                conn,
                cursor,
                statement,
                parameters,
                context,
                executemany,
            ):

                self.log.info("Plugin logged cursor event: %s", statement)

    Plugins are registered using entry points in a similar way as that
    of dialects::

        entry_points = {
            "sqlalchemy.plugins": [
                "log_cursor_plugin = myapp.plugins:LogCursorEventsPlugin"
            ]
        }

    A plugin that uses the above names would be invoked from a database
    URL as in::

        from sqlalchemy import create_engine

        engine = create_engine(
            "mysql+pymysql://scott:tiger@localhost/test?"
            "plugin=log_cursor_plugin&log_cursor_logging_name=mylogger"
        )

    The ``plugin`` URL parameter supports multiple instances, so that a URL
    may specify multiple plugins; they are loaded in the order stated
    in the URL::

        engine = create_engine(
            "mysql+pymysql://scott:tiger@localhost/test?"
            "plugin=plugin_one&plugin=plugin_twp&plugin=plugin_three"
        )

    The plugin names may also be passed directly to :func:`_sa.create_engine`
    using the :paramref:`_sa.create_engine.plugins` argument::

        engine = create_engine(
            "mysql+pymysql://scott:tiger@localhost/test", plugins=["myplugin"]
        )

    .. versionadded:: 1.2.3  plugin names can also be specified
       to :func:`_sa.create_engine` as a list

    A plugin may consume plugin-specific arguments from the
    :class:`_engine.URL` object as well as the ``kwargs`` dictionary, which is
    the dictionary of arguments passed to the :func:`_sa.create_engine`
    call.  "Consuming" these arguments includes that they must be removed
    when the plugin initializes, so that the arguments are not passed along
    to the :class:`_engine.Dialect` constructor, where they will raise an
    :class:`_exc.ArgumentError` because they are not known by the dialect.

    As of version 1.4 of SQLAlchemy, arguments should continue to be consumed
    from the ``kwargs`` dictionary directly, by removing the values with a
    method such as ``dict.pop``. Arguments from the :class:`_engine.URL` object
    should be consumed by implementing the
    :meth:`_engine.CreateEnginePlugin.update_url` method, returning a new copy
    of the :class:`_engine.URL` with plugin-specific parameters removed::

        class MyPlugin(CreateEnginePlugin):
            def __init__(self, url, kwargs):
                self.my_argument_one = url.query["my_argument_one"]
                self.my_argument_two = url.query["my_argument_two"]
                self.my_argument_three = kwargs.pop("my_argument_three", None)

            def update_url(self, url):
                return url.difference_update_query(
                    ["my_argument_one", "my_argument_two"]
                )

    Arguments like those illustrated above would be consumed from a
    :func:`_sa.create_engine` call such as::

        from sqlalchemy import create_engine

        engine = create_engine(
            "mysql+pymysql://scott:tiger@localhost/test?"
            "plugin=myplugin&my_argument_one=foo&my_argument_two=bar",
            my_argument_three="bat",
        )

    .. versionchanged:: 1.4

        The :class:`_engine.URL` object is now immutable; a
        :class:`_engine.CreateEnginePlugin` that needs to alter the
        :class:`_engine.URL` should implement the newly added
        :meth:`_engine.CreateEnginePlugin.update_url` method, which
        is invoked after the plugin is constructed.

        For migration, construct the plugin in the following way, checking
        for the existence of the :meth:`_engine.CreateEnginePlugin.update_url`
        method to detect which version is running::

            class MyPlugin(CreateEnginePlugin):
                def __init__(self, url, kwargs):
                    if hasattr(CreateEnginePlugin, "update_url"):
                        # detect the 1.4 API
                        self.my_argument_one = url.query["my_argument_one"]
                        self.my_argument_two = url.query["my_argument_two"]
                    else:
                        # detect the 1.3 and earlier API - mutate the
                        # URL directly
                        self.my_argument_one = url.query.pop("my_argument_one")
                        self.my_argument_two = url.query.pop("my_argument_two")

                    self.my_argument_three = kwargs.pop("my_argument_three", None)

                def update_url(self, url):
                    # this method is only called in the 1.4 version
                    return url.difference_update_query(
                        ["my_argument_one", "my_argument_two"]
                    )

        .. seealso::

            :ref:`change_5526` - overview of the :class:`_engine.URL` change which
            also includes notes regarding :class:`_engine.CreateEnginePlugin`.


    When the engine creation process completes and produces the
    :class:`_engine.Engine` object, it is again passed to the plugin via the
    :meth:`_engine.CreateEnginePlugin.engine_created` hook.  In this hook, additional
    changes can be made to the engine, most typically involving setup of
    events (e.g. those defined in :ref:`core_event_toplevel`).

    c
<01><00>|
|_y
)a<>Construct a new :class:`.CreateEnginePlugin`.

        The plugin object is instantiated individually for each call
        to :func:`_sa.create_engine`.  A single :class:`_engine.
        Engine` will be
        passed to the :meth:`.CreateEnginePlugin.engine_created` method
        corresponding to this URL.

        :param url: the :class:`_engine.URL` object.  The plugin may inspect
         the :class:`_engine.URL` for arguments.  Arguments used by the
         plugin should be removed, by returning an updated :class:`_engine.URL`
         from the :meth:`_engine.CreateEnginePlugin.update_url` method.

         .. versionchanged::  1.4

            The :class:`_engine.URL` object is now immutable, so a
            :class:`_engine.CreateEnginePlugin` that needs to alter the
            :class:`_engine.URL` object should implement the
            :meth:`_engine.CreateEnginePlugin.update_url` method.

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