fr.vergne.collection.util

Class ComposedKey<T>

java.lang.Object

fr.vergne.collection.util.ComposedKey<T>

Type Parameters:

T -

All Implemented Interfaces:

Iterable<T>

public class ComposedKey<T>
extends Object
implements Iterable<T>

A ComposedKey is an utilitary class to compose several pieces of data in a single one and use this composition as a key, for instance in a Map. Such a key need to be considered as equal to another if both provide the equivalent objects (a.equals(b), not necessarily a == b) in the same order. To keep the comparison consistent over time, a ComposedKey is made as an immutable object, so it is not possible to change the data it contains.

Author:

Matthieu Vergne

Constructor Summary

Constructors

Constructor and Description
ComposedKey(List<T> keys)
ComposedKey(T... keys)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
<TT extends T> TT	get(int index)
int	hashCode()
Iterator<T>	iterator()
int	size()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ComposedKey

public ComposedKey(List<T> keys)

ComposedKey

public ComposedKey(T... keys)

Method Detail

get

public <TT extends T> TT get(int index)

size

public int size()

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object