io.netty.util.internal

Class DefaultPriorityQueue<T extends PriorityQueueNode>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<T>

io.netty.util.internal.DefaultPriorityQueue<T>

Type Parameters:

T - The object that is maintained in the queue.

All Implemented Interfaces:

PriorityQueue<T>, Iterable<T>, Collection<T>, Queue<T>

public final class DefaultPriorityQueue<T extends PriorityQueueNode>
extends AbstractQueue<T>
implements PriorityQueue<T>

A priority queue which uses natural ordering of elements. Elements are also required to be of type PriorityQueueNode for the purpose of maintaining the index in the priority queue.

Constructor Summary

Constructors

Constructor and Description
DefaultPriorityQueue(Comparator<T> comparator, int initialSize)

Method Summary

Modifier and Type	Method and Description
void	clear()
void	clearIgnoringIndexes() Removes all of the elements from this PriorityQueue without calling PriorityQueueNode.priorityQueueIndex(DefaultPriorityQueue) or explicitly removing references to them to allow them to be garbage collected.
boolean	contains(Object o)
boolean	containsTyped(T node) Same as Collection.contains(Object) but typed using generics.
boolean	isEmpty()
Iterator<T>	iterator() This iterator does not return elements in any particular order.
boolean	offer(T e)
T	peek()
T	poll()
void	priorityChanged(T node) Notify the queue that the priority for node has changed.
boolean	remove(Object o)
boolean	removeTyped(T node) Same as Collection.remove(Object) but typed using generics.
int	size()
Object[]	toArray()
<X> X[]	toArray(X[] a)

Methods inherited from class java.util.AbstractQueue

add, addAll, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Queue

add, element, remove

Methods inherited from interface java.util.Collection

addAll, containsAll, equals, hashCode, parallelStream, removeAll, removeIf, retainAll, spliterator, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

DefaultPriorityQueue

public DefaultPriorityQueue(Comparator<T> comparator,
                            int initialSize)

Method Detail

size

public int size()

Specified by:

size in interface Collection<T extends PriorityQueueNode>

Specified by:

size in class AbstractCollection<T extends PriorityQueueNode>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<T extends PriorityQueueNode>

Overrides:

isEmpty in class AbstractCollection<T extends PriorityQueueNode>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<T extends PriorityQueueNode>

Overrides:

contains in class AbstractCollection<T extends PriorityQueueNode>

containsTyped

public boolean containsTyped(T node)

Description copied from interface: PriorityQueue

Same as Collection.contains(Object) but typed using generics.

Specified by:

containsTyped in interface PriorityQueue<T extends PriorityQueueNode>

clear

public void clear()

Specified by:

clear in interface Collection<T extends PriorityQueueNode>

Overrides:

clear in class AbstractQueue<T extends PriorityQueueNode>

clearIgnoringIndexes

public void clearIgnoringIndexes()

Description copied from interface: PriorityQueue

Removes all of the elements from this PriorityQueue without calling PriorityQueueNode.priorityQueueIndex(DefaultPriorityQueue) or explicitly removing references to them to allow them to be garbage collected. This should only be used when it is certain that the nodes will not be re-inserted into this or any other PriorityQueue and it is known that the PriorityQueue itself will be garbage collected after this call.

Specified by:

clearIgnoringIndexes in interface PriorityQueue<T extends PriorityQueueNode>

offer

public boolean offer(T e)

Specified by:

offer in interface Queue<T extends PriorityQueueNode>

poll

public T poll()

Specified by:

poll in interface Queue<T extends PriorityQueueNode>

peek

public T peek()

Specified by:

peek in interface Queue<T extends PriorityQueueNode>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T extends PriorityQueueNode>

Overrides:

remove in class AbstractCollection<T extends PriorityQueueNode>

removeTyped

public boolean removeTyped(T node)

Description copied from interface: PriorityQueue

Same as Collection.remove(Object) but typed using generics.

Specified by:

removeTyped in interface PriorityQueue<T extends PriorityQueueNode>

priorityChanged

public void priorityChanged(T node)

Description copied from interface: PriorityQueue

Notify the queue that the priority for node has changed. The queue will adjust to ensure the priority queue properties are maintained.

Specified by:

priorityChanged in interface PriorityQueue<T extends PriorityQueueNode>

Parameters:

node - An object which is in this queue and the priority may have changed.

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<T extends PriorityQueueNode>

Overrides:

toArray in class AbstractCollection<T extends PriorityQueueNode>

toArray

public <X> X[] toArray(X[] a)

Specified by:

toArray in interface Collection<T extends PriorityQueueNode>

Overrides:

toArray in class AbstractCollection<T extends PriorityQueueNode>

iterator

public Iterator<T> iterator()

This iterator does not return elements in any particular order.

Specified by:

iterator in interface Iterable<T extends PriorityQueueNode>

Specified by:

iterator in interface Collection<T extends PriorityQueueNode>

Specified by:

iterator in class AbstractCollection<T extends PriorityQueueNode>