GD.Data

Class Queue<E>

java.lang.Object

GD.Data.Queue<E>

Type Parameters:

E - Gaze data class

public class Queue<E>
extends java.lang.Object

Class, representing decorator on Vector class. It include a limit for the number of elements. It works in FIFO schema. If number of elements reaches limit then before appending the new element the oldest one will be deleted, so the length of the queue wouldn't exceed limit.

Version:

2.0.0

Author:

Andrey Shipilov

See Also:

JGDBlink, JGDSingleSample, JGDFixation

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.util.Vector<E>	mEntries Elements storage
(package private) int	mLimit Maximum number of elements in a queue

Constructor Summary

Constructors

Constructor and Description
Queue(int maxLength) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
void	append(E element) Add a new element into the queue
E	extract() Extract the oldest element of the queue.
boolean	isEmpty() State of the queue
E	last() Get the last element of the queue.
int	size() Number of elements in a queue

Methods inherited from class java.lang.Object

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

Field Detail

mEntries

java.util.Vector<E> mEntries

Elements storage

mLimit

int mLimit

Maximum number of elements in a queue

Constructor Detail

Queue

public Queue(int maxLength)

Constructor

Parameters:

maxLength - Maximum number of elements in a queue

Method Detail

append

public void append(E element)

Add a new element into the queue

Parameters:

element - Element to add

extract

public E extract()

Extract the oldest element of the queue. It is deleted after extracting

Returns:

extracted element

last

public E last()

Get the last element of the queue. It is NOT deleted after getting.

Returns:

Element of the queue

isEmpty

public boolean isEmpty()

State of the queue

Returns:

true if no elements added to the queue

size

public int size()

Number of elements in a queue

Returns:

number of elements