net.sf.saxon.expr.sort

Class NumericComparer11

java.lang.Object

net.sf.saxon.expr.sort.NumericComparer

net.sf.saxon.expr.sort.NumericComparer11

All Implemented Interfaces:

AtomicComparer

public class NumericComparer11
extends NumericComparer

A Comparer used for comparing sort keys when data-type="number". The items to be compared are converted to numbers, and the numbers are then compared directly. NaN values compare equal to each other, and equal to an empty sequence, but less than anything else.

This class is used in XSLT only, so there is no need to handle XQuery's "empty least" vs "empty greatest" options.

Author:

Michael H. Kay

Field Summary

Fields inherited from class net.sf.saxon.expr.sort.NumericComparer

converter

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NumericComparer11()

Method Summary

Modifier and Type	Method and Description
static NumericComparer	getInstance()
java.lang.String	save() Create a string representation of this AtomicComparer that can be saved in a compiled package and used to reconstitute the AtomicComparer when the package is reloaded

Methods inherited from class net.sf.saxon.expr.sort.NumericComparer

compareAtomicValues, comparesEqual, getCollator, provideContext

Methods inherited from class java.lang.Object

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

Constructor Detail

NumericComparer11

protected NumericComparer11()

Method Detail

getInstance

public static NumericComparer getInstance()

save

public java.lang.String save()

Create a string representation of this AtomicComparer that can be saved in a compiled package and used to reconstitute the AtomicComparer when the package is reloaded

Specified by:

save in interface AtomicComparer

Overrides:

save in class NumericComparer

Returns:

a string representation of the AtomicComparer