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

Class IsTripleFunction

java.lang.Object

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

All Implemented Interfaces:

Function

public class IsTripleFunction
extends Object
implements Function

Function that return "true"^^xsd:boolean if its argument is RDF-star Triple otherwise return "false"^^xsd:boolean the function's IRI uses RDF namespace to match the other functions in the package

Author:

damyan.ognyanov

Constructor Summary

Constructors

Constructor	Description
IsTripleFunction()

Method Summary

Modifier and Type	Method	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, mustReturnDifferentResult

Constructor Detail

IsTripleFunction

public IsTripleFunction()

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