org.apache.synapse.commons.executors.queues
Class FixedSizeQueue<E>

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractQueue<E>
          org.apache.synapse.commons.executors.queues.FixedSizeQueue<E>

Type Parameters:

E - Should implement the Importance interface

All Implemented Interfaces:

Iterable<E>, Collection<E>, Queue<E>, InternalQueue<E>

public class FixedSizeQueue<E>
extends AbstractQueue<E>
implements InternalQueue<E>

A bounded queue implementation for internal queues. This queue is backed by an fixed size array.

Constructor Summary

FixedSizeQueue(int priority, int capacity)
Create a queue with the given priority and capacity.

Method Summary

boolean	contains(Object o)
int	drainTo(Collection<? super E> c) Drain items from this queue to the specified collection
int	drainTo(Collection<? super E> c, int maxElements) Drain items from this queue to the specified collection
int	getCapacity() Return the capacity of the queue
Condition	getNotFullCond() Get not full condition
int	getPriority() Get the Priority of the queue
Iterator<E>	iterator()
boolean	offer(E e)
E	peek()
E	poll()
int	remainingCapacity() Remaining capacity of the queue.
boolean	remove(Object o)
void	setNotFullCond(Condition notFullCond) Get not full condition
void	setPriority(int p) Set the priority
int	size()
String	toString()

Methods inherited from class java.util.AbstractQueue

add, addAll, clear, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Queue

element, remove

Methods inherited from interface java.util.Collection

add, addAll, clear, containsAll, equals, hashCode, isEmpty, removeAll, retainAll, toArray, toArray

Constructor Detail

FixedSizeQueue

public FixedSizeQueue(int priority,
                      int capacity)

Create a queue with the given priority and capacity.

Parameters:

priority - priority of the elements in the queue

capacity - capacity of the queue

Method Detail

getPriority

public int getPriority()

Description copied from interface: InternalQueue

Get the Priority of the queue

Specified by:

getPriority in interface InternalQueue<E>

Returns:

priority

setPriority

public void setPriority(int p)

Description copied from interface: InternalQueue

Set the priority

Specified by:

setPriority in interface InternalQueue<E>

Parameters:

p - priority

getNotFullCond

public Condition getNotFullCond()

Description copied from interface: InternalQueue

Get not full condition

Specified by:

getNotFullCond in interface InternalQueue<E>

Returns:

not full condition

setNotFullCond

public void setNotFullCond(Condition notFullCond)

Description copied from interface: InternalQueue

Get not full condition

Specified by:

setNotFullCond in interface InternalQueue<E>

Parameters:

notFullCond - condition

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in class AbstractCollection<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in class AbstractCollection<E>

toString

public String toString()

Overrides:

toString in class AbstractCollection<E>

offer

public boolean offer(E e)

Specified by:

offer in interface Queue<E>

poll

public E poll()

Specified by:

poll in interface Queue<E>

peek

public E peek()

Specified by:

peek in interface Queue<E>

remainingCapacity

public int remainingCapacity()

Description copied from interface: InternalQueue

Remaining capacity of the queue. Unbounded queues should return Integer.MAX_VALUE

Specified by:

remainingCapacity in interface InternalQueue<E>

Returns:

remaining capacity

drainTo

public int drainTo(Collection<? super E> c)

Description copied from interface: InternalQueue

Drain items from this queue to the specified collection

Specified by:

drainTo in interface InternalQueue<E>

Parameters:

c - collection to add item

Returns:

number of items added

drainTo

public int drainTo(Collection<? super E> c,
                   int maxElements)

Description copied from interface: InternalQueue

Drain items from this queue to the specified collection

Specified by:

drainTo in interface InternalQueue<E>

Parameters:

c - collection to add item

maxElements - maximum number of element to drain

Returns:

number of items added

getCapacity

public int getCapacity()

Description copied from interface: InternalQueue

Return the capacity of the queue

Specified by:

getCapacity in interface InternalQueue<E>

Returns:

capacity of thr queue

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

Overrides:

contains in class AbstractCollection<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Overrides:

remove in class AbstractCollection<E>