Module params 

Operator parameter types and the bounded v1 GPU type coverage.

These types are deliberately independent of DataFusion’s PhysicalExpr tree: the planner lowers eligible DataFusion expressions into them, the codec serializes them with postcard, and every backend executes them.

Structs

AggregateSpec

A grouped aggregation over one Int64 key.

Enums

AggregateFunction

Aggregate functions supported by the grouped-aggregation kernel.

Comparison

Comparison operators supported by the fused filter kernel.

DistanceMetric

Distance metric for the vector kernel.

Literal

A literal a column is compared against.

Predicate

A filter predicate in the bounded v1 grammar: column-vs-literal comparisons combined with AND.

Functions

gpu_eligible_scalar

true for the scalar types the v1 GPU kernels accept as filter, join-key and aggregate inputs.

vector_dimension

For a FixedSizeList<Float32, n> column returns Some(n); otherwise None.