lrs.visitor
Class Nth

java.lang.Object
  lrs.visitor.Nth

All Implemented Interfaces:

IAlgo

public class Nth
extends java.lang.Object
implements IAlgo

Returns the nth element in a LRS.

Field Summary

private static ICounterAlgo	counterAlgo
static Nth	Singleton

Constructor Summary

private

Nth()

Method Summary

java.lang.Object	emptyCase(LRStruct host, java.lang.Object... param) Operates on an empty LRStruct host, given an input object.
java.lang.Object	nonEmptyCase(LRStruct host, java.lang.Object... param) Operates on a non-empty LRStruct host, given an input object.

Methods inherited from class java.lang.Object

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

Field Detail

Singleton

public static final Nth Singleton

counterAlgo

private static final ICounterAlgo counterAlgo

Constructor Detail

Nth

private Nth()

Method Detail

emptyCase

public java.lang.Object emptyCase(LRStruct host,
                                  java.lang.Object... param)

Description copied from interface: IAlgo

Operates on an empty LRStruct host, given an input object.

Specified by:

emptyCase in interface IAlgo

Parameters:

host - an empty LRStruct.

param - variable input list of objects needed by this IVisitor.

Returns:

an appropriate output object.

nonEmptyCase

public java.lang.Object nonEmptyCase(LRStruct host,
                                     java.lang.Object... param)

Description copied from interface: IAlgo

Operates on a non-empty LRStruct host, given an input object.

Specified by:

nonEmptyCase in interface IAlgo

Parameters:

host - a non-empty LRStruct.

param - variable input list of objects needed by this IVisitor.

Returns:

an appropriate output object.