Crate tonbo_predicate 

Tonbo predicate facade crate.

This crate is Arrow-first: predicate operands and literals are expressed directly in terms of typed-arrow-dyn cells, and evaluation assumes Arrow semantics (including NULL handling and mixed-width numeric coercions). There is no alternate storage or layout backend — keep the surface tight and Arrow native.

Structs

BitmapRowSet

RowSet implementation backed by a roaring bitmap.

ColumnRef

Reference identifying a column used inside predicates.

Predicate

Logical predicate shared across adapters and Tonbo’s core.

ScalarValue

Literal values accepted by predicate operands, backed by DynCell.

ScalarValueRef

Borrowed view over a scalar value backed by DynCellRef.

VisitOutcome

Result produced while evaluating parts of a predicate tree.

Enums

ComparisonOp

Comparison operator used by binary predicates.

Operand

Operand used by predicate comparisons and function calls.

PredicateNode

Recursive predicate node; leaf and branch variants coexist.

Traits

PredicateVisitor

Visitor that walks predicate trees and emits custom results plus residual predicates.

RowSet

Abstract set of row identifiers that supports basic set algebra.

Type Aliases

RowId

Unique identifier for a row referenced by the planner.

RowIdIter

Borrowed iterator that yields RowId values.