org.eclipse.rdf4j.query.algebra.evaluation.function.triple

Class TripleSubjectFunction

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.function.triple.TripleSubjectFunction

All Implemented Interfaces:

Function

public class TripleSubjectFunction
extends Object
implements Function

Function returning the subject component of RDF* Triple reused the IRI of rdf:subject as name

Author:

damyan.ognyanov

Constructor Summary

Constructors

Constructor and Description
TripleSubjectFunction()

Method Summary

Modifier and Type	Method and Description
Value	evaluate(ValueFactory vf, Value... args) Evaluate the function over the supplied input arguments, using the supplied ValueFactory to produce the result.
String	getURI()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.function.Function

evaluate

Constructor Detail

TripleSubjectFunction

public TripleSubjectFunction()

Method Detail

getURI

public String getURI()

Specified by:

getURI in interface Function

evaluate

public Value evaluate(ValueFactory vf,
                      Value... args)
               throws ValueExprEvaluationException

Description copied from interface: Function

Evaluate the function over the supplied input arguments, using the supplied ValueFactory to produce the result.

Specified by:

evaluate in interface Function

Parameters:

vf - a ValueFactory to use for producing the function result.

args - the function input arguments.

Returns:

the function result value.

Throws:

ValueExprEvaluationException