org.apache.pulsar.common.util.collections

Class ConcurrentLongPairSet

java.lang.Object

org.apache.pulsar.common.util.collections.ConcurrentLongPairSet

All Implemented Interfaces:

LongPairSet

public class ConcurrentLongPairSet
extends Object
implements LongPairSet

Concurrent hash set where values are composed of pairs of longs.

Provides similar methods as a ConcurrentHashSet<V> but since it's an open hash set with linear probing, no node allocations are required to store the keys and values, and no boxing is required.

Values MUST be >= 0.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ConcurrentLongPairSet.ConsumerLong Represents a function that accepts an object of the LongPair type.
static class	ConcurrentLongPairSet.LongPair Class representing two long values.
static interface	ConcurrentLongPairSet.LongPairConsumer Represents a function that accepts two long arguments.

Nested classes/interfaces inherited from interface org.apache.pulsar.common.util.collections.LongPairSet

LongPairSet.LongPairFunction<T>, LongPairSet.LongPairPredicate

Constructor Summary

Constructors

Constructor and Description
ConcurrentLongPairSet()
ConcurrentLongPairSet(int expectedItems)
ConcurrentLongPairSet(int expectedItems, int concurrencyLevel)

Method Summary

Modifier and Type	Method and Description
boolean	add(long item1, long item2) Adds composite value of item1 and item2 to set.
long	capacity()
void	clear() Removes all items from set.
boolean	contains(long item1, long item2) Checks if given (item1,item2) composite value exists into set.
void	forEach(ConcurrentLongPairSet.LongPairConsumer processor) Execute ConcurrentLongPairSet.LongPairConsumer processor for each entry in the set.
boolean	isEmpty() Check if set is empty.
Set<ConcurrentLongPairSet.LongPair>	items()
Set<ConcurrentLongPairSet.LongPair>	items(int numberOfItems)
<T> Set<T>	items(int numberOfItems, LongPairSet.LongPairFunction<T> longPairConverter)
boolean	remove(long item1, long item2) Remove an existing entry if found.
int	removeIf(LongPairSet.LongPairPredicate filter) Removes all of the elements of this collection that satisfy the given predicate.
long	size() Returns size of the set.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcurrentLongPairSet

public ConcurrentLongPairSet()

ConcurrentLongPairSet

public ConcurrentLongPairSet(int expectedItems)

ConcurrentLongPairSet

public ConcurrentLongPairSet(int expectedItems,
                             int concurrencyLevel)

Method Detail

size

public long size()

Description copied from interface: LongPairSet

Returns size of the set.

Specified by:

size in interface LongPairSet

Returns:

capacity

public long capacity()

isEmpty

public boolean isEmpty()

Description copied from interface: LongPairSet

Check if set is empty.

Specified by:

isEmpty in interface LongPairSet

Returns:

contains

public boolean contains(long item1,
                        long item2)

Description copied from interface: LongPairSet

Checks if given (item1,item2) composite value exists into set.

Specified by:

contains in interface LongPairSet

Returns:

add

public boolean add(long item1,
                   long item2)

Description copied from interface: LongPairSet

Adds composite value of item1 and item2 to set.

Specified by:

add in interface LongPairSet

Returns:

remove

public boolean remove(long item1,
                      long item2)

Remove an existing entry if found.

Specified by:

remove in interface LongPairSet

Parameters:

item1 -

Returns:

true if removed or false if item was not present

clear

public void clear()

Description copied from interface: LongPairSet

Removes all items from set.

Specified by:

clear in interface LongPairSet

forEach

public void forEach(ConcurrentLongPairSet.LongPairConsumer processor)

Description copied from interface: LongPairSet

Execute ConcurrentLongPairSet.LongPairConsumer processor for each entry in the set.

Specified by:

forEach in interface LongPairSet

removeIf

public int removeIf(LongPairSet.LongPairPredicate filter)

Removes all of the elements of this collection that satisfy the given predicate.

Specified by:

removeIf in interface LongPairSet

Parameters:

filter - a predicate which returns true for elements to be removed

Returns:

number of removed values

items

public Set<ConcurrentLongPairSet.LongPair> items()

Specified by:

items in interface LongPairSet

Returns:

a new list of all keys (makes a copy)

items

public Set<ConcurrentLongPairSet.LongPair> items(int numberOfItems)

Specified by:

items in interface LongPairSet

Returns:

a new list of keys with max provided numberOfItems (makes a copy)

items

public <T> Set<T> items(int numberOfItems,
                        LongPairSet.LongPairFunction<T> longPairConverter)

Specified by:

items in interface LongPairSet

longPairConverter - converts (long,long) pair to object

Returns:

a new list of keys with max provided numberOfItems

toString

public String toString()

Overrides:

toString in class Object