+
    i                         ^RI Ht  ! R R]P                  4      t ! R R4      t ! R R]]P                  P
                  4      t ! R R	]]P                  P                  4      tR
# )   )typesc                       ] tR t^tRtRtR# )JSONa  MSSQL JSON type.

MSSQL supports JSON-formatted data as of SQL Server 2016.

The :class:`_mssql.JSON` datatype at the DDL level will represent the
datatype as ``NVARCHAR(max)``, but provides for JSON-level comparison
functions as well as Python coercion behavior.

:class:`_mssql.JSON` is used automatically whenever the base
:class:`_types.JSON` datatype is used against a SQL Server backend.

.. seealso::

    :class:`_types.JSON` - main documentation for the generic
    cross-platform JSON datatype.

The :class:`_mssql.JSON` type supports persistence of JSON values
as well as the core index operations provided by :class:`_types.JSON`
datatype, by adapting the operations to render the ``JSON_VALUE``
or ``JSON_QUERY`` functions at the database level.

The SQL Server :class:`_mssql.JSON` type necessarily makes use of the
``JSON_QUERY`` and ``JSON_VALUE`` functions when querying for elements
of a JSON object.   These two functions have a major restriction in that
they are **mutually exclusive** based on the type of object to be returned.
The ``JSON_QUERY`` function **only** returns a JSON dictionary or list,
but not an individual string, numeric, or boolean element; the
``JSON_VALUE`` function **only** returns an individual string, numeric,
or boolean element.   **both functions either return NULL or raise
an error if they are not used against the correct expected value**.

To handle this awkward requirement, indexed access rules are as follows:

1. When extracting a sub element from a JSON that is itself a JSON
   dictionary or list, the :meth:`_types.JSON.Comparator.as_json` accessor
   should be used::

        stmt = select(data_table.c.data["some key"].as_json()).where(
            data_table.c.data["some key"].as_json() == {"sub": "structure"}
        )

2. When extracting a sub element from a JSON that is a plain boolean,
   string, integer, or float, use the appropriate method among
   :meth:`_types.JSON.Comparator.as_boolean`,
   :meth:`_types.JSON.Comparator.as_string`,
   :meth:`_types.JSON.Comparator.as_integer`,
   :meth:`_types.JSON.Comparator.as_float`::

        stmt = select(data_table.c.data["some key"].as_string()).where(
            data_table.c.data["some key"].as_string() == "some string"
        )

.. versionadded:: 1.4


 N)__name__
__module____qualname____firstlineno____doc____static_attributes__r       xC:\Users\petid\OneDrive\Desktop\Maestro\MAESTRO\maestro-backend\venv\Lib\site-packages\sqlalchemy/dialects/mssql/json.pyr   r      s    7r   r   c                   2   a  ] tR t^Tt o R tR tR tRtV tR# )_FormatTypeMixinc                    \        4       hN)NotImplementedErrorselfvalues   &&r   _format_value_FormatTypeMixin._format_valueU   s    !##r   c                :   a a S P                  V4      oV V3R  lpV# )c                 J   < SP                  V 4      p S'       d	   S! V 4      p V # r   r   r   r   
super_procs   &r   process0_FormatTypeMixin.bind_processor.<locals>.process[   %    &&u-E"5)Lr   )string_bind_processorr   dialectr   r   s   f& @r   bind_processor_FormatTypeMixin.bind_processorX   s    //8
	 r   c                :   a a S P                  V4      oV V3R  lpV# )c                 J   < SP                  V 4      p S'       d	   S! V 4      p V # r   r   r   s   &r   r   3_FormatTypeMixin.literal_processor.<locals>.processf   r    r   )string_literal_processorr"   s   f& @r   literal_processor"_FormatTypeMixin.literal_processorc   s    227;
	 r   r   N)	r   r   r	   r
   r   r$   r*   r   __classdictcell____classdict__s   @r   r   r   T   s     $		 	r   r   c                   &   a  ] tR t^ot o R tRtV tR# )JSONIndexTypec                Z    \        V\        4      '       d   R V,          pV# RV,          pV# )z$[%s]z$."%s")
isinstanceintr   s   &&r   r   JSONIndexType._format_valuep   s0    eS!!eOE  u$Er   r   Nr   r   r	   r
   r   r   r,   r-   s   @r   r0   r0   o   s      r   r0   c                   &   a  ] tR t^xt o R tRtV tR# )JSONPathTypec           
         R RP                  V Uu. uF+  p\        V\        4      '       d
   RV,          MRV,          NK-  	  up4      ,          # u upi )z$%s z[%s]z."%s")joinr2   r3   )r   r   elems   && r   r   JSONPathType._format_valuey   sV    GG !& % &0c%:%:FTM$N %
 	
s   1A
r   Nr5   r-   s   @r   r7   r7   x   s     
 
r   r7   N)r9   r   sqltypesr   r   r0   r7   r   r   r   <module>r>      sW    "88== 8B 6$hmm&A&A 	
#X]]%?%? 	
r   