Package org.eclipse.rdf4j.sail.evaluation

Class SailTripleSource

java.lang.Object

org.eclipse.rdf4j.sail.evaluation.SailTripleSource

All Implemented Interfaces:

TripleSource

public class SailTripleSource
extends Object
implements TripleSource

Field Summary

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

EMPTY_ITERATION, EMPTY_TRIPLE_ITERATION

Constructor Summary

Constructors

Constructor	Description
SailTripleSource(SailConnection conn, boolean includeInferred, ValueFactory valueFactory)

Method Summary

Modifier and Type	Method	Description
CloseableIteration<? extends Statement,QueryEvaluationException>	getStatements(Resource subj, IRI pred, Value obj, Resource... contexts)	Gets all statements that have a specific subject, predicate and/or object.
ValueFactory	getValueFactory()	Gets a ValueFactory object that can be used to create URI-, blank node- and literal objects.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SailTripleSource

public SailTripleSource(SailConnection conn,
                        boolean includeInferred,
                        ValueFactory valueFactory)

Method Detail

getStatements

public CloseableIteration<? extends Statement,QueryEvaluationException> getStatements(Resource subj,
                                                                                            IRI pred,
                                                                                            Value obj,
                                                                                            Resource... contexts)
                                                                                     throws QueryEvaluationException

Description copied from interface: TripleSource

Gets all statements that have a specific subject, predicate and/or object. All three parameters may be null to indicate wildcards. Optionally a (set of) context(s) may be specified in which case the result will be restricted to statements matching one or more of the specified contexts.

Specified by:

getStatements in interface TripleSource

Parameters:

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

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

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

contexts - The context(s) to get the statements from. Note that this parameter is a vararg and as such is optional. If no contexts are supplied the method operates on the entire repository.

Returns:

An iterator over the relevant statements.

Throws:

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

getValueFactory

public ValueFactory getValueFactory()

Description copied from interface: TripleSource

Gets a ValueFactory object that can be used to create URI-, blank node- and literal objects.

Specified by:

getValueFactory in interface TripleSource

Returns:

a ValueFactory object for this TripleSource.