net.sf.saxon.sort
Class NumericComparer
public
class
NumericComparer
extends Object
implements Comparator, Serializable
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.
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
Method Summary |
int | compare(Object a, Object b)
Compare two Items by converting them to numbers and comparing the numeric values. |
public NumericComparer()
public int compare(Object a, Object b)
Compare two Items by converting them to numbers and comparing the numeric values. If either
value cannot be converted to a number, it is treated as NaN, and compares less that the other
(two NaN values compare equal).
Parameters: a the first Item to be compared. b the second Item to be compared.
Returns: <0 if a0 if a>b
Throws: ClassCastException if the objects are not Items