uk.ac.starlink.connect

Class NodeComparator

java.lang.Object

uk.ac.starlink.connect.NodeComparator

All Implemented Interfaces:

Comparator<Node>

public class NodeComparator
extends Object
implements Comparator<Node>

Comparator for nodes. It returns all Branch nodes first, followed by all Leaf nodes. Within each group, items are ordered alphabetically. This is a singleton class.

Since:

25 Feb 2005

Author:

Mark Taylor (Starlink)

Method Summary

Modifier and Type	Method and Description
int	compare(Node i1, Node i2)
Collator	getCollator() Returns the collator used to perform alphabetic ordering.
static NodeComparator	getInstance() Returns an instance of this class.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Detail

getCollator

public Collator getCollator()

Returns the collator used to perform alphabetic ordering. May be overridden to modify behaviour.

Returns:

collator

compare

public int compare(Node i1,
                   Node i2)

Specified by:

compare in interface Comparator<Node>

getInstance

public static NodeComparator getInstance()

Returns an instance of this class.

Returns:

sole instance