org.deri.iris.builtins.datatype
Class ToStringBuiltin

java.lang.Object
  org.deri.iris.builtins.AbstractBuiltin
      org.deri.iris.builtins.FunctionalBuiltin
          org.deri.iris.builtins.datatype.ConversionBuiltin
              org.deri.iris.builtins.datatype.ToStringBuiltin

All Implemented Interfaces:

Comparable<IAtom>, IAtom, IBuiltinAtom

public class ToStringBuiltin
extends ConversionBuiltin

Represents a data type conversion function, which converts supported data type instances to String instances. According to the XPath casting table, all data types are supported to be converted to String.

Field Summary

Fields inherited from class org.deri.iris.builtins.AbstractBuiltin

EMPTY_TERM

Constructor Summary

ToStringBuiltin(ITerm... terms)
Creates a new instance of this builtin.

Method Summary

protected ITerm	convert(ITerm term) Converts the given supported data type instance to the specific data type
static IStringTerm	toString(IPlainLiteral term) Converts a PlainLiteral term to a String term.
static IStringTerm	toString(ITerm term) Converts a constant term to a String term.
static IStringTerm	toString(IXMLLiteral term) Converts a XMLLiteral term to a String term.

Methods inherited from class org.deri.iris.builtins.datatype.ConversionBuiltin

computeResult

Methods inherited from class org.deri.iris.builtins.FunctionalBuiltin

evaluateTerms, maxUnknownVariables, testForEquality

Methods inherited from class org.deri.iris.builtins.AbstractBuiltin

compareTo, equals, evaluate, getPredicate, getTuple, hashCode, isBuiltin, isGround, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ToStringBuiltin

public ToStringBuiltin(ITerm... terms)

Creates a new instance of this builtin.

Parameters:

terms - The term representing the data type instance to be converted.

Method Detail

convert

protected ITerm convert(ITerm term)

Description copied from class: ConversionBuiltin

Converts the given supported data type instance to the specific data type

Specified by:

convert in class ConversionBuiltin

Returns:

The result of the conversion or null if the specified data type is not compatible.

toString

public static IStringTerm toString(IXMLLiteral term)

Converts a XMLLiteral term to a String term. The language tag of the XMLLiteral term is omitted.

Parameters:

term - The XMLLiteral term to be converted.

Returns:

A new String term representing the result of the conversion.

toString

public static IStringTerm toString(IPlainLiteral term)

Converts a PlainLiteral term to a String term. The language tag of the PlainLiteral term is omitted.

Parameters:

term - The PlainLiteral term to be converted.

Returns:

A new String term representing the result of the conversion.

toString

public static IStringTerm toString(ITerm term)

Converts a constant term to a String term. The toCanonicalString method of the given term is used to convert to String term.

Parameters:

term - The term to be converted.

Returns:

A new String term representing the result of the conversion, or null if the data type represented by the given term is not supported.