org.magicwerk.brownies.collections.primitive

Class LongBigList

java.lang.Object

org.magicwerk.brownies.collections.primitive.ILongList

org.magicwerk.brownies.collections.primitive.LongBigList

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class LongBigList
extends ILongList

LongBigList is a list optimized for storing large number of elements. It stores the elements in fixed size blocks and the blocks itself are maintained in a tree for fast access. It also offers specialized methods for bulk processing of elements. Also copying a LongBigList is efficiently possible as its implemented using a copy-on-write approach.

Note that this implementation is not synchronized. Due to data caching used for exploiting locality of reference, performance can decrease if LongBigList is accessed by several threads at different positions.

Note that the iterators provided are not fail-fast.

Version:

$Id: LongBigList.java 2964 2015-10-18 22:43:57Z origo $

Author:

Thomas Mauch

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LongBigList() Default constructor.
LongBigList(java.util.Collection<java.lang.Long> coll) Create new list with specified elements.
LongBigList(int blockSize) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
int	binarySearch(int index, int len, long key) Searches the specified range for an object using the binary search algorithm.
int	blockSize() Returns block size used for this LongBigList.
int	capacity() As LongBigList grows and shrinks automatically, the term capacity does not really make sense.
java.lang.Object	clone() Returns a shallow copy of this LongBigList instance The copy is realized by a copy-on-write approach so also really large lists can efficiently be copied.
LongBigList	copy() Returns a copy of this LongBigList instance.
static LongBigList	create() Create new list.
static LongBigList	create(java.util.Collection<java.lang.Long> coll) Create new list with specified elements.
static LongBigList	create(long... elems) Create new list with specified elements.
static LongBigList	EMPTY()
long	getDefaultElem()
static ILongList	of(java.util.List<java.lang.Long> values)
static ILongList	of(long[] values)
static ILongList	of(java.lang.Long[] values)
int	size()
void	sort(int index, int len) Sort specified elements in the list using the specified comparator.
void	trimToSize() Pack as many elements in the blocks as allowed.
LongBigList	unmodifiableList() Returns an unmodifiable view of this list.

Methods inherited from class org.magicwerk.brownies.collections.primitive.ILongList

add, add, addAll, addAll, addAll, addAll, addArray, addArray, addFirst, addIfAbsent, addLast, addMult, addMult, binarySearch, clear, contains, containsAll, containsAny, copy, drag, element, ensureCapacity, equals, extract, extractWhere, fill, filter, get, getAll, getAll, getArray, getCount, getDistinct, getFirst, getLast, getWhere, hashCode, indexOf, indexOf, initAll, initAll, initArray, initMult, isEmpty, lastIndexOf, lastIndexOf, mappedList, move, offer, offerFirst, offerLast, peek, peekFirst, peekLast, poll, pollFirst, pollLast, pop, push, put, putAll, putAll, putArray, putMult, remove, remove, remove, removeAll, removeAll, removeAll, removeElem, removeFirst, removeFirstOccurrence, removeLast, removeLastOccurrence, removeWhere, replaceAll, replaceAll, replaceArray, replaceMult, resize, retainAll, retainAll, retainWhere, reverse, reverse, rotate, rotate, set, setAll, setAll, setArray, setMult, sort, swap, toArray, toArray, toArray, toString, transferCopy, transferMove, transferRemove, transferSwap

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LongBigList

public LongBigList()

Default constructor. The default block size is used.

LongBigList

public LongBigList(int blockSize)

Constructor.

Parameters:

blockSize - block size

LongBigList

public LongBigList(java.util.Collection<java.lang.Long> coll)

Create new list with specified elements.

Parameters:

coll - collection with element

Method Detail

of

public static ILongList of(long[] values)

of

public static ILongList of(java.lang.Long[] values)

of

public static ILongList of(java.util.List<java.lang.Long> values)

EMPTY

public static LongBigList EMPTY()

Returns:

unmodifiable empty instance

create

public static LongBigList create()

Create new list.

Parameters:

type - of elements stored in the list

Returns:

created list

create

public static LongBigList create(java.util.Collection<java.lang.Long> coll)

Create new list with specified elements.

Parameters:

coll - collection with element

type - of elements stored in the list

Returns:

created list

create

public static LongBigList create(long... elems)

Create new list with specified elements.

Parameters:

elems - array with elements

type - of elements stored in the list

Returns:

created list

blockSize

public int blockSize()

Returns block size used for this LongBigList.

Returns:

block size used for this LongBigList

copy

public LongBigList copy()

Returns a copy of this LongBigList instance. The copy is realized by a copy-on-write approach so also really large lists can efficiently be copied. This method is identical to clone() except that the result is casted to LongBigList.

Overrides:

copy in class ILongList

Returns:

a copy of this LongBigList instance

See Also:

ILongList.clone()

clone

public java.lang.Object clone()

Returns a shallow copy of this LongBigList instance The copy is realized by a copy-on-write approach so also really large lists can efficiently be copied.

Overrides:

clone in class ILongList

Returns:

a copy of this LongBigList instance

getDefaultElem

public long getDefaultElem()

size

public int size()

Specified by:

size in class ILongList

capacity

public int capacity()

As LongBigList grows and shrinks automatically, the term capacity does not really make sense. Therefore always -1 is returned.

Specified by:

capacity in class ILongList

Returns:

capacity of this list

unmodifiableList

public LongBigList unmodifiableList()

Description copied from class: ILongList

Returns an unmodifiable view of this list. This method allows modules to provide users with "read-only" access to internal lists. Query operations on the returned list "read through" to the specified list, and attempts to modify the returned list, whether direct or via its iterator, result in an UnsupportedOperationException.

Specified by:

unmodifiableList in class ILongList

Returns:

an unmodifiable view of the specified list

trimToSize

public void trimToSize()

Pack as many elements in the blocks as allowed. An application can use this operation to minimize the storage of an instance.

Specified by:

trimToSize in class ILongList

sort

public void sort(int index,
        int len)

Description copied from class: ILongList

Sort specified elements in the list using the specified comparator.

Specified by:

sort in class ILongList

Parameters:

index - index of first element to sort

len - number of elements to sort

See Also:

Arrays.sort(int[])

binarySearch

public int binarySearch(int index,
               int len,
               long key)

Description copied from class: ILongList

Searches the specified range for an object using the binary search algorithm.

Specified by:

binarySearch in class ILongList

Parameters:

index - index of first element to search

len - number of elements to search

key - the value to be searched for

Returns:

index of the search key, if it is contained in the array; otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, or a.length if all elements in the array are less than the specified key. Note that this guarantees that the return value will be >= 0 if and only if the key is found.

See Also:

Arrays.binarySearch(long[], long)