
    &`i	                        d Z ddlmZ ddlmZ ddlmZ ddlZddlm	Z
 ddlmZ ddlmZ erddlmZmZ e G d	 d
                      ZdS )zCStruct namespace for expression operations on struct-typed columns.    )annotations)	dataclass)TYPE_CHECKINGN)DataType)pyarrow_udf)ExprUDFExprc                  .    e Zd ZU dZded<   ddZdd	Zd
S )_StructNamespacea  Namespace for struct operations on expression columns.

    This namespace provides methods for operating on struct-typed columns using
    PyArrow compute functions.

    Example:
        >>> from ray.data.expressions import col
        >>> # Access a field using method
        >>> expr = col("user_record").struct.field("age")
        >>> # Access a field using bracket notation
        >>> expr = col("user_record").struct["age"]
        >>> # Access nested field
        >>> expr = col("user_record").struct["address"].struct["city"]
    r   _expr
field_namestrreturn	'UDFExpr'c                ,    |                      |          S )a  Extract a field using bracket notation.

        Args:
            field_name: The name of the field to extract.

        Returns:
            UDFExpr that extracts the specified field from each struct.

        Example:
            >>> col("user").struct["age"]  # Get age field  # doctest: +SKIP
            >>> col("user").struct["address"].struct["city"]  # Get nested city field  # doctest: +SKIP
        )field)selfr   s     /home/jaya/work/projects/VOICE-AGENT/VIET/agent-env/lib/python3.11/site-packages/ray/data/namespace_expressions/struct_namespace.py__getitem__z_StructNamespace.__getitem__%   s     zz*%%%    c                   t          t                    }| j        j                                        r}| j        j                                        }t          j                            |          r@	 |	                              j
        }t          j        |          }n# t          $ r Y nw xY wt          |          dfd            } || j                  S )zExtract a field from a struct.

        Args:
            field_name: The name of the field to extract.

        Returns:
            UDFExpr that extracts the specified field from each struct.
        )return_dtypearrpyarrow.Arrayr   c                .    t          j        |           S )N)pcstruct_field)r   r   s    r   _struct_fieldz-_StructNamespace.field.<locals>._struct_fieldI   s    ?3
333r   )r   r   r   r   )r   objectr   	data_typeis_arrow_typeto_arrow_dtypepyarrowtypes	is_structr   type
from_arrowKeyErrorr   )r   r   r   
arrow_type
field_typer   s    `    r   r   z_StructNamespace.field4   s      '':--// 	-<<>>J}&&z22 !+!1!1*!=!=!BJ#+#6z#B#BLL   D 
,	/	/	/	4 	4 	4 	4 	4 
0	/	4 }TZ(((s   2.B! !
B.-B.N)r   r   r   r   )__name__
__module____qualname____doc____annotations__r   r    r   r   r   r      sS           KKK& & & &) ) ) ) ) )r   r   )r.   
__future__r   dataclassesr   typingr   r#   pyarrow.computecomputer   ray.data.datatyper   ray.data.expressionsr   r   r	   r   r0   r   r   <module>r8      s    I I " " " " " " ! ! ! ! ! !                    & & & & & & , , , , , , 322222222 :) :) :) :) :) :) :) :) :) :)r   