net.sf.saxon.expr.sort
Class ComparisonKey

java.lang.Object
  net.sf.saxon.expr.sort.ComparisonKey

public class ComparisonKey
extends Object

An object used as a comparison key. Two XPath atomic values are equal under the "eq" operator if and only if their comparison keys are equal under the Java equals() method.

Constructor Summary

ComparisonKey(int category, Object value)
Create a comparison key for a value in a particular category.

Method Summary

boolean	equals(Object other) Test if two comparison keys are equal
int	hashCode() Get a hashcode for a comparison key.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComparisonKey

public ComparisonKey(int category,
                     Object value)

Create a comparison key for a value in a particular category. The "category" here represents a set of primitive types that allow mutual comparison (so all numeric values are in the same category).

Parameters:

category - the category

value - the value within the category

Method Detail

equals

public boolean equals(Object other)

Test if two comparison keys are equal

Overrides:

equals in class Object

Parameters:

other - the other comparison key

Returns:

true if they are equal

Throws:

ClassCastException - if the other object is not a ComparisonKey

hashCode

public int hashCode()

Get a hashcode for a comparison key. If two comparison keys are equal, they must have the same hash code.

Overrides:

hashCode in class Object

Returns:

the hash code.