Enum IndexPermutation 

pub enum IndexPermutation {
    Spo,
    Sop,
    Pso,
    Pos,
    Osp,
    Ops,
}

Which stored permutation to scan. The full six orders (a SPARQL engine’s classic set, as in QLever): together they sort the triples on every prefix of (s, p, o) columns, so for any bound-component prefix and any free component there is a permutation that routes on the prefix and yields the stream sorted on that free component — the precondition for a merge join.

Variants

Spo

Sop

Pso

Pos

Osp

Ops

Implementations

impl IndexPermutation

pub fn name(self) -> &'static str

Stable display name used in CLI diagnostics and provenance records.

pub fn section_index(self) -> usize

Section number inside the stored permutation container.

Trait Implementations

impl Clone for IndexPermutation

fn clone(&self) -> IndexPermutation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for IndexPermutation

impl Debug for IndexPermutation

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for IndexPermutation

impl PartialEq for IndexPermutation

fn eq(&self, other: &IndexPermutation) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for IndexPermutation