Struct UpdateExecutor 

pub struct UpdateExecutor { /* private fields */ }

A minimal in-memory dataset executor for SPARQL 1.1 Update.

It maintains a default graph (a Vec<Triple>) and an arbitrary number of named graphs keyed by IRI string. Pattern-based operations perform a simple structural match (no unification — variables are left as wildcards that match anything).

Implementations

impl UpdateExecutor

pub fn new() -> Self

Create an empty executor.

pub fn execute( &mut self, update: &SparqlUpdate, ) -> Result<UpdateResult, ArqError>

Execute a single update and return a summary.

pub fn execute_all( &mut self, updates: &[SparqlUpdate], ) -> Result<Vec<UpdateResult>, ArqError>

Execute a sequence of update operations and collect their results.

pub fn triple_count(&self) -> usize

Number of triples in the default graph.

pub fn graph_count(&self) -> usize

Number of named graphs (not counting the default graph).

pub fn get_graph(&self, iri: &str) -> Option<&Vec<Triple>>

Return the triples in a named graph, or None if it does not exist.

pub fn default_graph(&self) -> &Vec<Triple>

Return a reference to the default graph’s triple set.

Trait Implementations

impl Default for UpdateExecutor

fn default() -> Self

Returns the “default value” for a type.