org.openanzo.glitter.rdf
Class PlainLiteral

java.lang.Object
  org.openanzo.glitter.rdf.Literal
      org.openanzo.glitter.rdf.PlainLiteral

All Implemented Interfaces:

ILiteralTerm, IPlainLiteralTerm, RDFTerm, TriplePatternComponent

public class PlainLiteral
extends Literal
implements IPlainLiteralTerm

An implementation of IPlainLiteralTerm to represent plain literals in a query parsed by Glitter.

Author:

lee

Constructor Summary

PlainLiteral(java.lang.String value)
Build a plain literal from its lexical value.

PlainLiteral(java.lang.String value, java.lang.String language)
Build a plain literal from its lexical value and language.

Method Summary

int	compareTo(TriplePatternComponent o) Compares to TriplePatternComponents for ordering.
java.lang.String	getLanguage()
java.lang.String	getLexicalForm()
boolean	hasLanguage()
boolean	isPlainLiteral()
boolean	isTypedLiteral()
java.lang.String	toString()

Methods inherited from class org.openanzo.glitter.rdf.Literal

equals, hashCode

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PlainLiteral

public PlainLiteral(java.lang.String value,
                    java.lang.String language)

Build a plain literal from its lexical value and language.

Parameters:

value -

language -

PlainLiteral

public PlainLiteral(java.lang.String value)

Build a plain literal from its lexical value.

Parameters:

value -

Method Detail

getLanguage

public java.lang.String getLanguage()

Specified by:

getLanguage in interface IPlainLiteralTerm

Returns:

The language tag for this plain literal. May be null, unless IPlainLiteralTerm.hasLanguage() returns true.

hasLanguage

public boolean hasLanguage()

Specified by:

hasLanguage in interface IPlainLiteralTerm

Returns:

whether or not this literal has a language tag

getLexicalForm

public java.lang.String getLexicalForm()

Specified by:

getLexicalForm in interface ILiteralTerm

Specified by:

getLexicalForm in class Literal

Returns:

The lexical form of the literal.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

compareTo

public int compareTo(TriplePatternComponent o)

Description copied from interface: TriplePatternComponent

Compares to TriplePatternComponents for ordering.

Specified by:

compareTo in interface TriplePatternComponent

Returns:

-1 if this comes before other; 0 if TriplePatternComponent.equals(Object) is true, and 1 otherwise.

isPlainLiteral

public boolean isPlainLiteral()

Specified by:

isPlainLiteral in interface ILiteralTerm

Returns:

whether or not this is a plain literal.

isTypedLiteral

public boolean isTypedLiteral()

Specified by:

isTypedLiteral in interface ILiteralTerm

Returns:

whether or not this is a typed literal.