Struct Stats 

pub struct Stats {
    pub available: bool,
    pub total: f64,
    pub predicates: HashMap<i64, PredicateStats>,
    pub classes: HashMap<i64, f64>,
    pub pairs: HashMap<(i64, i64), f64>,
    pub graph_index: bool,
    pub text_index: bool,
    pub transitive: BTreeSet<i64>,
}

Planner statistics loaded from stats_pred / stats_class.

Fields

available: bool

true when optimize() has been run at least once.

total: f64

predicates: HashMap<i64, PredicateStats>

classes: HashMap<i64, f64>

Instance count per rdf:type class.

pairs: HashMap<(i64, i64), f64>

Triples per frequent (predicate, object) pair of low-cardinality predicates: values much more common than their predicate’s average (skew the average would hide).

graph_index: bool

text_index: bool

The full-text index exists (oxl:textMatch compiles to FTS5).

transitive: BTreeSet<i64>

Transitive properties (from tbox_closure), for query-time reasoning.

Implementations

impl Stats

pub fn load_request(caps: &Capabilities) -> Request

Statements that load statistics and store settings.

pub fn from_response(response: &Response) -> Result<Self>

pub fn refresh_request() -> Request

Statements recomputing statistics and the schema closure (run by optimize()).

Trait Implementations

impl Clone for Stats

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Stats

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

Formats the value using the given formatter.

impl Default for Stats

fn default() -> Self

Returns the “default value” for a type.