iceberg::Evaluator Class Reference

Evaluates an Expression against data rows. More...

#include <evaluator.h>

Public Member Functions
Result< bool >	Evaluate (const StructLike &row) const
	Evaluate the expression against a data row.

Static Public Member Functions
static Result< std::unique_ptr< Evaluator > >	Make (const Schema &schema, std::shared_ptr< Expression > unbound, bool case_sensitive=true)
	Make an evaluator for an unbound expression.

Detailed Description

Evaluates an Expression against data rows.

This class evaluates bound expressions against StructLike data rows to determine if the row matches the expression criteria. The evaluator binds unbound expressions to a schema on construction and then can be used to evaluate multiple data rows.

Note

: The evaluator is thread-safe.

Member Function Documentation

Evaluate()

Result< bool > iceberg::Evaluator::Evaluate

(

const StructLike &

row

)

const

Evaluate the expression against a data row.

Parameters

row	The data row to evaluate

Returns

true if the row matches the expression, false otherwise, or error

Make()

static Result< std::unique_ptr< Evaluator > > iceberg::Evaluator::Make ( const Schema &  schema, std::shared_ptr< Expression >  unbound, bool  case_sensitive = true  )

static

Make an evaluator for an unbound expression.

Parameters

schema	The schema to bind against
unbound	The unbound expression to evaluate
case_sensitive	Whether field name matching is case-sensitive

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The documentation for this class was generated from the following file:

• iceberg/expression/evaluator.h