org.jfree.layouting.layouter.style

Class CSSStyleRuleComparator

Implemented Interfaces:
Comparator

public class CSSStyleRuleComparator
extends java.lang.Object
implements Comparator

Creation-Date: 08.12.2005, 21:31:51
Author:
Thomas Morgner

Constructor Summary

CSSStyleRuleComparator()

Method Summary

int
compare(Object o1, Object o2)
Compares its two arguments for order.

Constructor Details

CSSStyleRuleComparator

public CSSStyleRuleComparator()

Method Details

compare

public int compare(Object o1,
                   Object o2)
Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

The implementor must ensure that sgn(compare(x, y)) == -sgn(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)

The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.

Finally, the implementer must ensure that compare(x, y)==0 implies that sgn(compare(x, z))==sgn(compare(y, z)) for all z.

It is generally the case, but not strictly required that (compare(x, y)==0) == (x.equals(y)). Generally speaking, any comparator that violates this condition should clearly indicate this fact. The recommended language is "Note: this comparator imposes orderings that are inconsistent with equals."

Parameters:
o1 - the first object to be compared.
o2 - the second object to be compared.
Returns:
a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.