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

Class NegativeIntegerCast

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.function.xsd.CastFunction

org.eclipse.rdf4j.query.algebra.evaluation.function.xsd.IntegerCastFunction

org.eclipse.rdf4j.query.algebra.evaluation.function.xsd.NegativeIntegerCast

All Implemented Interfaces:

Function

public class NegativeIntegerCast
extends IntegerCastFunction

A Function that tries to cast its argument to an xsd:negativeInteger .

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor	Description
NegativeIntegerCast()

Method Summary

Modifier and Type	Method	Description
protected Optional<Literal>	createTypedLiteral(ValueFactory vf, BigInteger integerValue)	create a Literal with the specific datatype for the supplied BigInteger value.
protected IRI	getXsdDatatype()	Get the specific XML Schema datatype which this function returns.
protected boolean	isValidForDatatype(String lexicalValue)	Verifies that the supplied lexical value is valid for the datatype.

Methods inherited from class org.eclipse.rdf4j.query.algebra.evaluation.function.xsd.IntegerCastFunction

convert, createTypedLiteral

Methods inherited from class org.eclipse.rdf4j.query.algebra.evaluation.function.xsd.CastFunction

evaluate, getURI, getXsdName, typeError

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

NegativeIntegerCast

public NegativeIntegerCast()

Method Detail

getXsdDatatype

protected IRI getXsdDatatype()

Description copied from class: CastFunction

Get the specific XML Schema datatype which this function returns.

Specified by:

getXsdDatatype in class CastFunction

Returns:

an XML Schema datatype IRI

isValidForDatatype

protected boolean isValidForDatatype(String lexicalValue)

Description copied from class: CastFunction

Verifies that the supplied lexical value is valid for the datatype.

Specified by:

isValidForDatatype in class CastFunction

Parameters:

lexicalValue - a lexical value

Returns:

true if the lexical value is valid for the datatype, false otherwise.

createTypedLiteral

protected Optional<Literal> createTypedLiteral(ValueFactory vf,
                                               BigInteger integerValue)

Description copied from class: IntegerCastFunction

create a Literal with the specific datatype for the supplied BigInteger value.

Specified by:

createTypedLiteral in class IntegerCastFunction

Parameters:

vf - the ValueFactory to use for creating the Literal

integerValue - the integer value to use for creating the Literal

Returns:

an Optional literal value, which may be empty if the supplied integerValue can not be successfully converted to the specific datatype.