langchain.chains.query_constructor.ir.Expr

class langchain.chains.query_constructor.ir.Expr

Bases: BaseModel

Base class for all expressions.

Create a new model by parsing and validating input data from keyword arguments.

Raises ValidationError if the input data cannot be parsed to form a valid model.

accept(visitor: Visitor) → Any

Accept a visitor.

Parameters

visitor – visitor to accept

Returns

result of visiting