langchain.retrievers.self_query.myscale.MyScaleTranslator

class langchain.retrievers.self_query.myscale.MyScaleTranslator(metadata_key: str = 'metadata')

Bases: Visitor

Translate internal query language elements to valid filters.

Methods

__init__([metadata_key])
visit_comparison(comparison)	Translate a Comparison.
visit_operation(operation)	Translate an Operation.
visit_structured_query(structured_query)	Translate a StructuredQuery.

Attributes

allowed_comparators
allowed_operators	Subset of allowed logical operators.
map_dict

visit_comparison(comparison: Comparison) → Dict

Translate a Comparison.

visit_operation(operation: Operation) → Dict

Translate an Operation.

visit_structured_query(structured_query: StructuredQuery) → Tuple[str, dict]

Translate a StructuredQuery.

allowed_comparators: Optional[Sequence[Comparator]] = [<Comparator.EQ: 'eq'>, <Comparator.GT: 'gt'>, <Comparator.GTE: 'gte'>, <Comparator.LT: 'lt'>, <Comparator.LTE: 'lte'>, <Comparator.CONTAIN: 'contain'>, <Comparator.LIKE: 'like'>]

allowed_operators: Optional[Sequence[Operator]] = [<Operator.AND: 'and'>, <Operator.OR: 'or'>, <Operator.NOT: 'not'>]

Subset of allowed logical operators.

map_dict = {Operator.AND: <function DEFAULT_COMPOSER.<locals>.f>, Comparator.CONTAIN: <function FUNCTION_COMPOSER.<locals>.f>, Comparator.EQ: <function DEFAULT_COMPOSER.<locals>.f>, Comparator.GT: <function DEFAULT_COMPOSER.<locals>.f>, Comparator.GTE: <function DEFAULT_COMPOSER.<locals>.f>, Comparator.LIKE: <function DEFAULT_COMPOSER.<locals>.f>, Comparator.LT: <function DEFAULT_COMPOSER.<locals>.f>, Comparator.LTE: <function DEFAULT_COMPOSER.<locals>.f>, Operator.NOT: <function DEFAULT_COMPOSER.<locals>.f>, Operator.OR: <function DEFAULT_COMPOSER.<locals>.f>}