Class IntCast

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.IntCast

All Implemented Interfaces:

Function

public class IntCast
extends IntegerCastFunction

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

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor	Description
IntCast()

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 CoreDatatype.XSD	getCoreXsdDatatype()
protected boolean	isValidForDatatype(String lexicalValue)	Verifies that the supplied lexical value is valid for the datatype.

Methods inherited from class IntegerCastFunction

convert, createTypedLiteral

Modifier and Type	Method	Description
protected Literal	convert(ValueFactory valueFactory, Value value)	Convert the supplied value to a literal of the function output datatype.
protected Optional<Literal>	createTypedLiteral(ValueFactory vf, boolean booleanValue)	create a Literal with the specific datatype for the supplied boolean value.

Methods inherited from class CastFunction

evaluate, getURI, getXsdDatatype, getXsdName, typeError

Modifier and Type	Method	Description
Literal	evaluate(ValueFactory valueFactory, Value... args)	Evaluate the function over the supplied input arguments, using the supplied ValueFactory to produce the result.
final String	getURI()
protected IRI	getXsdDatatype()	Deprecated, for removal: This API element is subject to removal in a future version.
protected String	getXsdName()	Returns a prefixed name representation of the specific datatype that this function returns
protected final ValueExprEvaluationException	typeError(Value arg, Throwable cause)	Creates a ValueExprEvaluationException that signals a type error.

Methods inherited from class Object

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

Methods inherited from interface Function

evaluate, mustReturnDifferentResult

Modifier and Type	Method	Description
default Value	evaluate(TripleSource tripleSource, Value... args)	Evaluate the function over the supplied input arguments.
default boolean	mustReturnDifferentResult()	UUID() and STRUUID() must return a different result for each invocation.

Constructor Details

IntCast

public IntCast()

Method Details

getCoreXsdDatatype

protected CoreDatatype.XSD getCoreXsdDatatype()

Specified by:

getCoreXsdDatatype in class CastFunction

createTypedLiteral

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

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.

Throws:

ArithmeticException - if an error occurs when attempting to convert the supplied value to a value of the specific datatype.

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.