Module expression_evaluator 

Expression evaluator — recursively evaluates an expression tree against a DataChunk.

This replaces the ad-hoc PhysicalFilter::evaluate_expression with a proper expression evaluator that dispatches function calls through the scalar function registry (Akar-function::evaluate_scalar), supporting:

• Variable: reads values from a DataChunk field by name
• Constant: returns a literal value
• BinaryOp: dispatches to arithmetic/comparison/boolean scalar functions
• UnaryOp: dispatches to NOT/negate scalar functions
• FunctionCall: resolves the function name in the registry and evaluates
• PropertyAccess: reads a property from a struct/object expression
• List/Map: evaluated via list_creation/map_creation scalar functions

Structs

ExpressionEvaluator

Functions

map_property_value

Extract a named property from a runtime map/struct value. Returns Value::Null when val is not a map/struct or the key is absent.

Type Aliases

SequenceFn

SubqueryFn