
    `?iB                     v    d Z ddlmZ ddlmZmZ  G d de      Z G d d      Z G d d	      Z	 G d
 d      Z
y)z]
Useful auxiliary data structures for query construction. Not useful outside
the SQL domain.
    )FullResultSet)INNERLOUTERc                       e Zd ZdZd Zy)	MultiJoinz
    Used by join construction code to indicate the point at which a
    multi-valued join was attempted (if the caller wants to treat that
    exceptionally).
    c                      || _         || _        y N)levelnames_with_path)self	names_pospath_with_namess      u/home/cursorai/projects/django-cronjob-utils/venv/lib/python3.12/site-packages/django/db/models/sql/datastructures.py__init__zMultiJoin.__init__   s    
.    N)__name__
__module____qualname____doc__r    r   r   r   r   
   s    /r   r   c                       e Zd Zy)EmptyN)r   r   r   r   r   r   r   r      s    r   r   c                   N    e Zd ZdZ	 ddZd Zd Zed        Zd Z	d Z
d	 Zd
 Zy)Joina  
    Used by sql.Query and sql.SQLCompiler to generate JOIN clauses into the
    FROM entry. For example, the SQL generated could be
        LEFT OUTER JOIN "sometable" T1
        ON ("othertable"."sometable_id" = "sometable"."id")

    This class is primarily used in Query.alias_map. All entries in alias_map
    must be Join compatible by providing the following attributes and methods:
        - table_name (string)
        - table_alias (possible alias for the table, can be None)
        - join_type (can be None for those entries that aren't joined from
          anything)
        - parent_alias (which table is this join's parent, can be None
          similarly to join_type)
        - as_sql()
        - relabeled_clone()
    Nc                     || _         || _        || _        || _        |j	                         | _        t        d | j
                  D              | _        || _        || _	        || _
        y )Nc              3   R   K   | ]  \  }}|j                   |j                   f ! y wr	   )column).0	lhs_field	rhs_fields      r   	<genexpr>z Join.__init__.<locals>.<genexpr>B   s.      
(8$	9 y//0(8s   %')
table_nameparent_aliastable_alias	join_typeget_joining_fieldsjoin_fieldstuple	join_cols
join_fieldnullablefiltered_relation)r   r"   r#   r$   r%   r*   r+   r,   s           r   r   zJoin.__init__.   sl     %(&" &88: 
(,(8(8
 

 % !2r   c                    g }g }|j                   }| j                  D ]  \  }}|j                  j                  | j                  || j
                  |      \  }}|j                  |      \  }}	||	z  }
|j                  |      \  }}||z  }|j                  |
 d|         | j                  j                  | j
                  | j                        }|r9|j                  |      \  }}|j                  d|z         |j                  |       | j                  rD	 |j                  | j                        \  }}|j                  d|z         |j                  |       |s9t        | j                  d| j                        }t        d|j                  z        dj!                  |      }| j
                  | j"                  k(  rdnd| j
                  z  }| j$                  d || j"                        |d	|d
}||fS # t        $ r Y w xY w)z
        Generate the full
           LEFT OUTER JOIN sometable
           ON sometable.somecol = othertable.othercol, params
        clause for this join.
        z = z(%s)fieldzaJoin generated an empty ON clause. %s did not yield either joining columns or extra restrictions.z AND   %s z ON ())quote_name_unless_aliasr'   opsprepare_join_on_clauser#   r$   compileappendr*   get_extra_restrictionextendr,   r   getattr
ValueError	__class__joinr"   r%   )r   compiler
connectionjoin_conditionsparamsqnlhsrhslhs_sql
lhs_paramslhs_full_namerhs_sql
rhs_paramsrhs_full_name
extra_cond	extra_sqlextra_paramsdeclared_fieldon_clause_sql	alias_strsqls                        r   as_sqlzJoin.as_sqlL   s    --((HC!~~<<!!3(8(8#HC #+"2"23"7GZ#j0M"*"2"23"7GZ#j0M""m_C#GH ) __::d//

 &.&6&6z&B#I|""6I#56MM,'!!,*2*:*:4;Q;Q*R'	<  &&v	'9:l+$T__gtON9;I;S;ST   _5""doo5BEDDTDT<T 	 NNt	
 F{- ! s   G> >	H
	H
c           	      n   |j                  | j                  | j                        }|j                  | j                  | j                        }| j                  | j                  j	                  |      }nd }| j                  | j                  ||| j                  | j                  | j                  |      S )N)r,   )
getr#   r$   r,   relabeled_cloner<   r"   r%   r*   r+   )r   
change_mapnew_parent_aliasnew_table_aliasr,   s        r   rU   zJoin.relabeled_clone   s    %>>$*;*;T=N=NO$..)9)94;K;KL!!- $ 6 6 F Fz R $~~OONNOOMM/  
 	
r   c                 t    | j                   | j                  | j                  | j                  | j                  fS r	   )r<   r"   r#   r*   r,   r   s    r   identityzJoin.identity   s5     NNOOOO""
 	
r   c                 `    t        |t              st        S | j                  |j                  k(  S r	   )
isinstancer   NotImplementedr[   r   others     r   __eq__zJoin.__eq__   s%    %&!!}}..r   c                 ,    t        | j                        S r	   hashr[   rZ   s    r   __hash__zJoin.__hash__       DMM""r   c                 >    | j                  i       }t        |_        |S r	   )rU   r   r%   r   news     r   demotezJoin.demote   s    ""2&
r   c                 >    | j                  i       }t        |_        |S r	   )rU   r   r%   rh   s     r   promotezJoin.promote   s    ""2&
r   r	   )r   r   r   r   r   rR   rU   propertyr[   ra   re   rj   rl   r   r   r   r   r      sD    4 3<7r
" 
 
/
#
r   r   c                   J    e Zd ZdZdZdZdZd Zd Zd Z	e
d        Zd Zd Zy)		BaseTablez
    The BaseTable class is used for base table references in FROM clause. For
    example, the SQL "foo" in
        SELECT * FROM "foo" WHERE somecond
    could be generated by this class.
    Nc                      || _         || _        y r	   )r"   r$   )r   r"   aliass      r   r   zBaseTable.__init__   s    $ r   c                     | j                   | j                  k(  rdnd| j                   z  }|j                  | j                        }||z   g fS )Nr/   r0   )r$   r"   r3   )r   r>   r?   rP   base_sqls        r   rR   zBaseTable.as_sql   sN    ""doo5BEDDTDT<T 	 33DOOD)#R''r   c                     | j                  | j                  |j                  | j                  | j                              S r	   )r<   r"   rT   r$   )r   rV   s     r   rU   zBaseTable.relabeled_clone   s3    ~~OOZ^^D,<,<d>N>NO
 	
r   c                 H    | j                   | j                  | j                  fS r	   )r<   r"   r$   rZ   s    r   r[   zBaseTable.identity   s    ~~t0@0@@@r   c                 `    t        |t              st        S | j                  |j                  k(  S r	   )r]   ro   r^   r[   r_   s     r   ra   zBaseTable.__eq__   s%    %+!!}}..r   c                 ,    t        | j                        S r	   rc   rZ   s    r   re   zBaseTable.__hash__   rf   r   )r   r   r   r   r%   r#   r,   r   rR   rU   rm   r[   ra   re   r   r   r   ro   ro      sH     IL!(

 A A/
#r   ro   N)r   django.core.exceptionsr   django.db.models.sql.constantsr   r   	Exceptionr   r   r   ro   r   r   r   <module>r{      s?   
 1 8
/	 
/	 	U Up&# &#r   