org.apache.lucene.util.collections

Class IntArray

java.lang.Object

org.apache.lucene.util.collections.IntArray

public class IntArray
extends Object

A Class wrapper for a grow-able int[] which can be sorted and intersect with other IntArrays.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Constructor and Description
IntArray() Construct a default IntArray, size 0 and surly a sort should not occur.

Method Summary

Methods

Modifier and Type	Method and Description
void	addToArray(int value) Adds a value to the array.
void	clear(boolean resize) Clear the IntArray (set all elements to zero).
boolean	equals(Object o) Equals method.
int	get(int i) Get an element from a specific index.
int	hashCode() Calculates a hash-code for HashTables
void	intersect(IntArray other) Intersects the data with a given IntArray
void	intersect(IntHashSet set) Intersects the data with a given IntHashSet.
void	set(int idx, int value)
int	size() Return the size of the Array.
void	sort() Sorts the data.
String	toString() toString or not toString.

Methods inherited from class java.lang.Object

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

Constructor Detail

IntArray

public IntArray()

Construct a default IntArray, size 0 and surly a sort should not occur.

Method Detail

intersect

public void intersect(IntHashSet set)

Intersects the data with a given IntHashSet.

Parameters:

set - A given ArrayHashSetInt which holds the data to be intersected against

intersect

public void intersect(IntArray other)

Intersects the data with a given IntArray

Parameters:

other - A given IntArray which holds the data to be intersected agains

size

public int size()

Return the size of the Array. Not the allocated size, but the number of values actually set.

Returns:

the (filled) size of the array

addToArray

public void addToArray(int value)

Adds a value to the array.

Parameters:

value - value to be added

equals

public boolean equals(Object o)

Equals method. Checking the sizes, than the values from the last index to the first (Statistically for random should be the same but for our specific use would find differences faster).

Overrides:

equals in class Object

sort

public void sort()

Sorts the data. If it is needed.

hashCode

public int hashCode()

Calculates a hash-code for HashTables

Overrides:

hashCode in class Object

get

public int get(int i)

Get an element from a specific index.

Parameters:

i - index of which element should be retrieved.

set

public void set(int idx,
       int value)

toString

public String toString()

toString or not toString. That is the question!

Overrides:

toString in class Object

clear

public void clear(boolean resize)

Clear the IntArray (set all elements to zero).

Parameters:

resize - - if resize is true, then clear actually allocates a new array of size 0, essentially 'clearing' the array and freeing memory.