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    Pythonlangchain-classicchainsquery_constructorparserQueryTransformer
    Classā—Since v1.0

    QueryTransformer

    Transform a query string into an intermediate representation.

    Copy
    QueryTransformer(
      self,
      *args: Any = (),
      allowed_comparators: Sequence[Comparator] | None = None,
      allowed_operators: Sequence[Operator] | None = None,
      allowed_attributes: Sequence[str] | None = None,
      **kwargs: Any = {}
    )

    Bases

    Transformer

    Parameters

    NameTypeDescription
    *argsAny
    Default:()

    Positional arguments.

    allowed_comparatorsSequence[Comparator] | None
    Default:None

    Optional sequence of allowed comparators.

    allowed_operatorsSequence[Operator] | None
    Default:None

    Optional sequence of allowed operators.

    allowed_attributesSequence[str] | None
    Default:None

    Optional sequence of allowed attributes for comparators.

    **kwargsAny
    Default:{}

    Additional keyword arguments.

    Constructors

    constructor
    __init__
    NameType
    allowed_comparatorsSequence[Comparator] | None
    allowed_operatorsSequence[Operator] | None
    allowed_attributesSequence[str] | None

    Attributes

    attribute
    allowed_comparators: allowed_comparators
    attribute
    allowed_operators: allowed_operators
    attribute
    allowed_attributes: allowed_attributes

    Methods

    method
    program

    Transform the items into a tuple.

    method
    func_call

    Transform a function name and args into a FilterDirective.

    method
    args

    Transforms items into a tuple.

    method
    false

    Returns false.

    method
    true

    Returns true.

    method
    list

    Transforms an item into a list.

    method
    int

    Transforms an item into an int.

    method
    float

    Transforms an item into a float.

    method
    date

    Transforms an item into a ISO8601Date object.

    method
    datetime

    Transforms an item into a ISO8601DateTime object.

    method
    string

    Transforms an item into a string.

    Removes escaped quotes.

    View source on GitHub