ó
    øÞ j”  ã                   óÎ   • S SK Jr   " S S\R                  5      r " S S5      r " S S\\R                  R
                  5      r " S S	\\R                  R                  5      rg
)é   )Útypesc                   ó   • \ rS rSrSrSrg)ÚJSONé   aé  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)Ú__name__Ú
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super_procs    €€r   ÚprocessÚ0_FormatTypeMixin.bind_processor.<locals>.process[   ó%   ø€ Ø×&Ñ& uÓ-ˆEÞÙ" 5Ó)�ØˆLr   )Ústring_bind_processor©r   Údialectr    r   s   `  @r   Úbind_processorÚ_FormatTypeMixin.bind_processorX   s   ù€ Ø×/Ñ/°Ó8ˆ
ö	ð ˆr   c                 ó:   ^ ^• T R                  U5      mU U4S jnU$ )Nc                 óH   >• TR                  U 5      n T(       a  T" U 5      n U $ r   r   r   s    €€r   r    Ú3_FormatTypeMixin.literal_processor.<locals>.processf   r"   r   )Ústring_literal_processorr$   s   `  @r   Úliteral_processorÚ"_FormatTypeMixin.literal_processorc   s   ù€ Ø×2Ñ2°7Ó;ˆ
ö	ð ˆr   r   N)r   r	   r
   r   r   r&   r,   r   r   r   r   r   r   T   s   † ò$ò	õ	r   r   c                   ó   • \ rS rSrS rSrg)ÚJSONIndexTypeéo   c                 óH   • [        U[        5      (       a  SU-  nU$ SU-  nU$ )Nz$[%s]z$."%s")Ú
isinstanceÚintr   s     r   r   ÚJSONIndexType._format_valuep   s0   € Ü�eœS×!Ñ!Ø˜e‘OˆEð ˆð ˜uÑ$ˆEØˆr   r   N©r   r	   r
   r   r   r   r   r   r   r/   r/   o   s   † õr   r/   c                   ó   • \ rS rSrS rSrg)ÚJSONPathTypeéx   c           
      óŽ   • SSR                  U Vs/ sH"  n[        U[        5      (       a  SU-  OSU-  PM$     sn5      -  $ s  snf )Nz$%sÚ z[%s]z."%s")Újoinr2   r3   )r   r   Úelems      r   r   ÚJSONPathType._format_valuey   sV   € ØØ�G‰Gñ !&óá %˜ô &0°´c×%:Ñ%:�F˜T’MÀÈ$ÁÒNÙ %ñóñ
ð 	
ùòs   ‘(A
r   Nr5   r   r   r   r7   r7   x   s   † õ
r   r7   N)r:   r   Úsqltypesr   r   r/   r7   r   r   r   Ú<module>r?      sW   ðõ "ô8ˆ8�=‰=ô 8÷Bñ ô6Ð$ h§m¡m×&AÑ&Aô ô	
Ð# X§]¡]×%?Ñ%?õ 	
r   