Enum GraphPattern 

pub enum GraphPattern {
    Triple(TriplePattern),
    Group(Vec<GraphPattern>),
    Optional(Box<GraphPattern>),
    Union(Box<GraphPattern>, Box<GraphPattern>),
    Filter(FilterCondition),
    Bind(BindExpr, String),
    Values(Vec<String>, Vec<Vec<PatternElement>>),
}

Graph pattern in SPARQL (supports complex patterns)

Variants

Triple(TriplePattern)

Basic triple pattern

Group(Vec<GraphPattern>)

Conjunction of patterns (implicit AND)

Optional(Box<GraphPattern>)

OPTIONAL pattern (left-outer join)

Union(Box<GraphPattern>, Box<GraphPattern>)

UNION pattern (disjunction)

Filter(FilterCondition)

FILTER constraint

Bind(BindExpr, String)

BIND (expr AS ?var) — bind expression result to a new variable.

Values(Vec<String>, Vec<Vec<PatternElement>>)

VALUES (?v1 ?v2 …) { (t1 t2) … } — inline value table.

Trait Implementations

impl Clone for GraphPattern

fn clone(&self) -> GraphPattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphPattern

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

Formats the value using the given formatter.

impl PartialEq for GraphPattern

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for GraphPattern