org.jrdf.graph.datatype
Interface LexicalComparator

All Superinterfaces:

Comparator<Literal>, Serializable

All Known Implementing Classes:

LexicalComparatorImpl

public interface LexicalComparator
extends Comparator<Literal>, Serializable

Sorts by the URI of the literal and then value. Will return 0 only if both the URI are the same and the literal value are the same. Use SemanticComparator for semantic comparison.

Method Summary

int	compareLanguage(Literal o1, Literal o2, boolean ignoreCase)
int	compareLexicalForm(Literal o1, Literal o2)
int	compareLiteralTypes(Literal o1, Literal o2) Returns order based on literal type, always goes plain, language and then data type.

Methods inherited from interface java.util.Comparator

compare, equals

Method Detail

compareLiteralTypes

int compareLiteralTypes(Literal o1,
                        Literal o2)

Returns order based on literal type, always goes plain, language and then data type. i.e. if o1 is a plain literal always -1, if o1 is a language literal and o2 is a plain 1, else -1 and if o1 is a datatype literal then always 1. 0 if literals are equal.

Parameters:

o1 - the first literal to compare.

o2 - the second literal to compare.

Returns:

-1, 0 or 1 if literals based on type are smaller, equal or larger.

compareLanguage

int compareLanguage(Literal o1,
                    Literal o2,
                    boolean ignoreCase)

compareLexicalForm

int compareLexicalForm(Literal o1,
                       Literal o2)