Class ExtnFct_ToLiteral

java.lang.Object

se.liu.ida.hefquin.mappings.algebra.exprs.fcts.ExtnFct_ToLiteral

All Implemented Interfaces:

ExtensionFunction

public class ExtnFct_ToLiteral
extends Object
implements ExtensionFunction

Given a string literal and a datatype IRI, returns a literal whose lexical form is the lexical form of the given string literal and whose datatype IRI is the IRI given as second argument. Additionally, for the sake of robustness, the function also works for the following two types of cases:

First, if the given literal is not a string literal but of the same type as the given datatype IRI, then simply return that literal.

Second, if the given literal is not a string literal but the given datatype IRI is xsd:string, then simply use the lexical form of the given literal to create an xsd:string literal.

Field Summary

Fields

Modifier and Type	Field	Description
static final ExtensionFunction	instance

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ExtnFct_ToLiteral()

Method Summary

Modifier and Type	Method	Description
org.apache.jena.graph.Node	apply(org.apache.jena.graph.Node... args)
boolean	isCorrectNumberOfArgument(int n)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

instance

public static final ExtensionFunction instance

Constructor Details

ExtnFct_ToLiteral

protected ExtnFct_ToLiteral()

Method Details

isCorrectNumberOfArgument

public boolean isCorrectNumberOfArgument(int n)

Specified by:

isCorrectNumberOfArgument in interface ExtensionFunction

apply

public org.apache.jena.graph.Node apply(org.apache.jena.graph.Node... args)

Specified by:

apply in interface ExtensionFunction

toString

public String toString()

Overrides:

toString in class Object