Package org.eclipse.rdf4j.query.algebra.evaluation

Interface RDFStarTripleSource

All Superinterfaces:

TripleSource

public interface RDFStarTripleSource
extends TripleSource

Field Summary

Fields inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.TripleSource

EMPTY_ITERATION, EMPTY_TRIPLE_ITERATION

Method Summary

Modifier and Type	Method	Description
CloseableIteration<? extends org.eclipse.rdf4j.model.Triple,QueryEvaluationException>	getRdfStarTriples(org.eclipse.rdf4j.model.Resource subj, org.eclipse.rdf4j.model.IRI pred, org.eclipse.rdf4j.model.Value obj)	Gets all Triple nodes that have a specific subject, predicate and/or object.

Methods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.TripleSource

getStatements, getValueFactory

Method Detail

getRdfStarTriples

CloseableIteration<? extends org.eclipse.rdf4j.model.Triple,QueryEvaluationException> getRdfStarTriples(org.eclipse.rdf4j.model.Resource subj,
                                                                                                              org.eclipse.rdf4j.model.IRI pred,
                                                                                                              org.eclipse.rdf4j.model.Value obj)
                                                                                                       throws QueryEvaluationException

Gets all Triple nodes that have a specific subject, predicate and/or object. All three parameters may be null to indicate wildcards.

Parameters:

subj - A Resource specifying the triple's subject, or null for a wildcard.

pred - A URI specifying the triple's predicate, or null for a wildcard.

obj - A Value specifying the triple's object, or null for a wildcard.

Returns:

An iterator over the relevant triples.

Throws:

QueryEvaluationException - If the rdf star triple source failed to get the statements.