net.sf.saxon.sort

Class DecimalSortComparer

Implemented Interfaces:
AtomicComparer, Serializable

public class DecimalSortComparer
extends ComparableAtomicValueComparer

An AtomicComparer used for sorting values that are known to be instances of xs:decimal (including xs:integer), It also supports a separate method for getting a collation key to test equality of items
Author:
Michael H. Kay

Method Summary

ComparisonKey
getComparisonKey(AtomicValue a)
Get a comparison key for an object.
static DecimalSortComparer
getDecimalSortComparerInstance()

Methods inherited from class net.sf.saxon.sort.ComparableAtomicValueComparer

compareAtomicValues, comparesEqual, getComparisonKey, getInstance, provideContext

Method Details

getComparisonKey

public ComparisonKey getComparisonKey(AtomicValue a)
Get a comparison key for an object. This must satisfy the rule that if two objects are equal as defined by the XPath eq operator, then their comparison keys are equal as defined by the Java equals() method, and vice versa. There is no requirement that the comparison keys should reflect the ordering of the underlying objects.
Specified by:
getComparisonKey in interface AtomicComparer
Overrides:
getComparisonKey in interface ComparableAtomicValueComparer

getDecimalSortComparerInstance

public static DecimalSortComparer getDecimalSortComparerInstance()