org.gridgain.grid.util

Class GridBoundedConcurrentLinkedHashSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

org.gridgain.grid.util.GridSerializableSet<E>

org.gridgain.grid.util.GridSetWrapper<E>

org.gridgain.grid.util.GridBoundedConcurrentLinkedHashSet<E>

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, Set<E>

public class GridBoundedConcurrentLinkedHashSet<E>
extends GridSetWrapper<E>

Concurrent set with an upper bound. Once set reaches its maximum capacity, the eldest elements will be removed based on insertion or access order.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.gridgain.grid.util.GridSetWrapper

map, VAL

Constructor Summary

Constructors

Constructor and Description
GridBoundedConcurrentLinkedHashSet(int max) Creates a new, empty set with specified order and default initial capacity (16), load factor (0.75) and concurrencyLevel (16).
GridBoundedConcurrentLinkedHashSet(int max, int initCap) Creates a new, empty set with the specified initial capacity, and with default load factor (0.75) and concurrencyLevel (16).
GridBoundedConcurrentLinkedHashSet(int max, int initCap, float loadFactor) Creates a new, empty set with the specified initial capacity and load factor and with the default concurrencyLevel (16).
GridBoundedConcurrentLinkedHashSet(int max, int initCap, float loadFactor, int concurLvl) Creates a new, empty set with the specified initial capacity, load factor and concurrency level.
GridBoundedConcurrentLinkedHashSet(int max, int initCap, float loadFactor, int concurLvl, org.jdk8.backport.ConcurrentLinkedHashMap.QueuePolicy qPlc) Creates a new, empty set with the specified initial capacity, load factor and concurrency level.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(E e) Note that unlike regular add operation on a set, this method will only add the passed in element if it's not already present in set.
E	addx(E e) Note that unlike regular add operation on a set, this method will only add the passed in element if it's not already present in set.
int	sizex()
String	toString()

Methods inherited from class org.gridgain.grid.util.GridSetWrapper

clear, contains, defaultValue, isEmpty, iterator, map, remove, size, toArray, toArray

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

addAll, containsAll, retainAll

Constructor Detail

GridBoundedConcurrentLinkedHashSet

public GridBoundedConcurrentLinkedHashSet(int max)

Creates a new, empty set with specified order and default initial capacity (16), load factor (0.75) and concurrencyLevel (16).

Parameters:

max - Upper bound of this set.

GridBoundedConcurrentLinkedHashSet

public GridBoundedConcurrentLinkedHashSet(int max,
                                  int initCap)

Creates a new, empty set with the specified initial capacity, and with default load factor (0.75) and concurrencyLevel (16).

Parameters:

max - Upper bound of this set.

initCap - the initial capacity. The implementation performs internal sizing to accommodate this many elements.

Throws:

IllegalArgumentException - if the initial capacity of elements is negative.

GridBoundedConcurrentLinkedHashSet

public GridBoundedConcurrentLinkedHashSet(int max,
                                  int initCap,
                                  float loadFactor)

Creates a new, empty set with the specified initial capacity and load factor and with the default concurrencyLevel (16).

Parameters:

max - Upper bound of this set.

initCap - The implementation performs internal sizing to accommodate this many elements.

loadFactor - the load factor threshold, used to control resizing. Resizing may be performed when the average number of elements per bin exceeds this threshold.

Throws:

IllegalArgumentException - if the initial capacity of elements is negative or the load factor is nonpositive.

GridBoundedConcurrentLinkedHashSet

public GridBoundedConcurrentLinkedHashSet(int max,
                                  int initCap,
                                  float loadFactor,
                                  int concurLvl)

Creates a new, empty set with the specified initial capacity, load factor and concurrency level.

Parameters:

max - Upper bound of this set.

initCap - the initial capacity. The implementation performs internal sizing to accommodate this many elements.

loadFactor - the load factor threshold, used to control resizing. Resizing may be performed when the average number of elements per bin exceeds this threshold.

concurLvl - the estimated number of concurrently updating threads. The implementation performs internal sizing to try to accommodate this many threads.

Throws:

IllegalArgumentException - if the initial capacity is negative or the load factor or concurLvl are nonpositive.

GridBoundedConcurrentLinkedHashSet

public GridBoundedConcurrentLinkedHashSet(int max,
                                  int initCap,
                                  float loadFactor,
                                  int concurLvl,
                                  org.jdk8.backport.ConcurrentLinkedHashMap.QueuePolicy qPlc)

Creates a new, empty set with the specified initial capacity, load factor and concurrency level.

Parameters:

max - Upper bound of this set.

initCap - the initial capacity. The implementation performs internal sizing to accommodate this many elements.

loadFactor - the load factor threshold, used to control resizing. Resizing may be performed when the average number of elements per bin exceeds this threshold.

concurLvl - the estimated number of concurrently updating threads. The implementation performs internal sizing to try to accommodate this many threads.

qPlc - Queue policy.

Throws:

IllegalArgumentException - if the initial capacity is negative or the load factor or concurLvl are nonpositive.

Method Detail

add

public boolean add(E e)

Note that unlike regular add operation on a set, this method will only add the passed in element if it's not already present in set.

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

Overrides:

add in class GridSetWrapper<E>

Parameters:

e - Element to add.

Returns:

True if element was added.

addx

@Nullable
public E addx(E e)

Note that unlike regular add operation on a set, this method will only add the passed in element if it's not already present in set.

Parameters:

e - Element to add.

Returns:

Value previously present in set or null if set didn't have this value.

sizex

public int sizex()

Returns:

Size of the set

toString

public String toString()

Overrides:

toString in class GridSetWrapper<E>