krrood.entity_query_language.rules.conclusion

Conclusion rules for the Entity Query Language.

This module defines side-effecting clauses that adjust outputs or bindings (for example, Add) during query evaluation.

Classes

Conclusion	Base for side-effecting/action clauses that adjust outputs (e.g., Set, Add).
Add	Add a new value to the domain of a variable.

Module Contents

class krrood.entity_query_language.rules.conclusion.Conclusion

Bases: krrood.entity_query_language.core.base_expressions.BinaryExpression, abc.ABC

Base for side-effecting/action clauses that adjust outputs (e.g., Set, Add).

left: krrood.entity_query_language.core.base_expressions.Selectable

The variable being affected by the conclusion.

right: Any

The value added or set to the variable by the conclusion.

property variable: krrood.entity_query_language.core.base_expressions.Selectable

property value: Any

class krrood.entity_query_language.rules.conclusion.Add

Bases: Conclusion

Add a new value to the domain of a variable.

_evaluate__(sources: krrood.entity_query_language.core.base_expressions.Bindings) → Iterable[krrood.entity_query_language.core.base_expressions.OperationResult]

Evaluate the symbolic expression and set the operands bindings in the result according to the evaluation logic of this expression.

Parameters:

sources – The current bindings of variables.

Returns:

An Iterator of OperationResult instances containing the bindings resulting from the evaluation of this

expression.