org.nuiton.math.matrix

Class LazyVector

java.lang.Object

org.nuiton.math.matrix.LazyVector

All Implemented Interfaces:

Vector

public class LazyVector
extends Object
implements Vector

Cette classe encapsule un Vector et permet de l'initialiser reellement que lorsqu'on souhaite modifier une valeur. Cela permet de ne pas initialise d'enorme tableau s'il n'y en a pas besoin.

Version:

$Revision: 477 $ Last update: $Date: 2014-05-28 18:41:46 +0200 (Wed, 28 May 2014) $ by : $Author: echatellier $

Author:

poussin

Field Summary

Fields

Modifier and Type	Field and Description
protected Vector	backend reel backend, not initialized since not necessary
protected int	capacity
protected boolean	isInitBackend
protected AtomicInteger	users

Constructor Summary

Constructors

Constructor and Description
LazyVector(Vector backend, int capacity)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Vector v) Ajoute les valeurs du vector passé en argument a ce vector.
boolean	equals(Object o)
double	getMaxOccurence()
double	getMaxOccurrence() Retourne la valeur la plus utilise dans le vector
double	getValue(int pos)
void	init(int capacity) Init vector, before this method call, vector is in indetermined state.
boolean	isImplementedAdd(Vector v) Permet de savoir si add est implanté par ce vector.
boolean	isImplementedMap() Permet de savoir si map est implanté par ce vector.
boolean	isImplementedMinus(Vector v) Permet de savoir si minus est implanté par ce vector.
boolean	isImplementedPaste(Vector v) Permet de savoir si paste est implanté par ce vector.
void	map(MapFunction f) applique a chaque valeur du vector la MapFunction.
void	minus(Vector v) Soustrait les valeurs du vector passé en argument a ce vector.
void	paste(Vector source) Copie les valeurs du vector passé en argument dans ce vector.
protected void	pasteToBackend(Vector target, Vector copy) Before call this method backend, must be initialized
protected void	prepareBackendForModification()
void	setValue(int pos, double value)
int	size()

Methods inherited from class java.lang.Object

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

Field Detail

isInitBackend

protected boolean isInitBackend

backend

protected Vector backend

reel backend, not initialized since not necessary

users

protected AtomicInteger users

capacity

protected int capacity

Constructor Detail

LazyVector

public LazyVector(Vector backend,
          int capacity)

Method Detail

init

public void init(int capacity)

Description copied from interface: Vector

Init vector, before this method call, vector is in indetermined state. multiple call to init method must be permit. Only first call must do some work, extra call must do nothing

Specified by:

init in interface Vector

getMaxOccurence

public double getMaxOccurence()

Specified by:

getMaxOccurence in interface Vector

getMaxOccurrence

public double getMaxOccurrence()

Description copied from interface: Vector

Retourne la valeur la plus utilise dans le vector

Specified by:

getMaxOccurrence in interface Vector

Returns:

getValue

public double getValue(int pos)

Specified by:

getValue in interface Vector

setValue

public void setValue(int pos,
            double value)

Specified by:

setValue in interface Vector

size

public int size()

Specified by:

size in interface Vector

isImplementedPaste

public boolean isImplementedPaste(Vector v)

Description copied from interface: Vector

Permet de savoir si paste est implanté par ce vector.

Specified by:

isImplementedPaste in interface Vector

Parameters:

v - vector to test

Returns:

true if operation is supported

isImplementedAdd

public boolean isImplementedAdd(Vector v)

Description copied from interface: Vector

Permet de savoir si add est implanté par ce vector.

Specified by:

isImplementedAdd in interface Vector

Parameters:

v - vector to test

Returns:

true if operation is supported

isImplementedMinus

public boolean isImplementedMinus(Vector v)

Description copied from interface: Vector

Permet de savoir si minus est implanté par ce vector.

Specified by:

isImplementedMinus in interface Vector

Parameters:

v - vector to test

Returns:

true if operation is supported

isImplementedMap

public boolean isImplementedMap()

Description copied from interface: Vector

Permet de savoir si map est implanté par ce vector.

Specified by:

isImplementedMap in interface Vector

Returns:

true if operation is supported

paste

public void paste(Vector source)

Description copied from interface: Vector

Copie les valeurs du vector passé en argument dans ce vector.

Specified by:

paste in interface Vector

Parameters:

source - vector to paste

add

public void add(Vector v)

Description copied from interface: Vector

Ajoute les valeurs du vector passé en argument a ce vector.

Specified by:

add in interface Vector

Parameters:

v - vector to add

minus

public void minus(Vector v)

Description copied from interface: Vector

Soustrait les valeurs du vector passé en argument a ce vector.

Specified by:

minus in interface Vector

Parameters:

v - vector to minus

map

public void map(MapFunction f)

Description copied from interface: Vector

applique a chaque valeur du vector la MapFunction. ATTENTION cette function ne doit pas converser d'etat interne qui modifierait son comportement a chaque execution, sinon cette methode ne fonctionne pas, car pour les Vector implanter a base de Map la fonction n'est appliqué qu'au defaultValue et au valeur deja existante

Specified by:

map in interface Vector

Parameters:

f - funtion to apply

equals

public boolean equals(Object o)

Overrides:

equals in class Object

prepareBackendForModification

protected void prepareBackendForModification()

pasteToBackend

protected void pasteToBackend(Vector target,
                  Vector copy)

Before call this method backend, must be initialized

Parameters:

target -

copy -