org.mule.util.queue
Class DefaultQueueInfoDelegate

java.lang.Object
  org.mule.util.queue.DefaultQueueInfoDelegate

All Implemented Interfaces:

QueueInfoDelegate, TransientQueueInfoDelegate

public class DefaultQueueInfoDelegate
extends Object
implements TransientQueueInfoDelegate

The default QueueInfoDelegate. This uses a LinkedList to store the members of the queue.

Field Summary

protected int	capacity
protected LinkedList<Serializable>	list

Constructor Summary

DefaultQueueInfoDelegate(int capacity)

Method Summary

boolean	addAll(Collection<? extends Serializable> items) Appends all of the elements in the specified collection to the queue (optional operation).
int	getSize() Return the size of the queue
boolean	offer(Serializable o, int room, long timeout) Offer to append a new member to the end of the queue
Serializable	peek() return, but do not remove, the first member of the queue
Serializable	poll(long timeout) Poll the queue for its first member, and, if there is one, remove and return it
void	putNow(Serializable o) append a new member to the end of the queue
void	untake(Serializable item) Restore a previously removed member to the front of the queue

Methods inherited from class java.lang.Object

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

Field Detail

capacity

protected final int capacity

list

protected final LinkedList<Serializable> list

Constructor Detail

DefaultQueueInfoDelegate

public DefaultQueueInfoDelegate(int capacity)

Method Detail

putNow

public void putNow(Serializable o)

Description copied from interface: QueueInfoDelegate

append a new member to the end of the queue

Specified by:

putNow in interface QueueInfoDelegate

offer

public boolean offer(Serializable o,
                     int room,
                     long timeout)
              throws InterruptedException

Description copied from interface: QueueInfoDelegate

Offer to append a new member to the end of the queue

Specified by:

offer in interface QueueInfoDelegate

Throws:

InterruptedException

poll

public Serializable poll(long timeout)
                  throws InterruptedException

Description copied from interface: QueueInfoDelegate

Poll the queue for its first member, and, if there is one, remove and return it

Specified by:

poll in interface QueueInfoDelegate

Throws:

InterruptedException

peek

public Serializable peek()
                  throws InterruptedException

Description copied from interface: QueueInfoDelegate

return, but do not remove, the first member of the queue

Specified by:

peek in interface QueueInfoDelegate

Throws:

InterruptedException

untake

public void untake(Serializable item)
            throws InterruptedException

Description copied from interface: QueueInfoDelegate

Restore a previously removed member to the front of the queue

Specified by:

untake in interface QueueInfoDelegate

Throws:

InterruptedException

getSize

public int getSize()

Description copied from interface: QueueInfoDelegate

Return the size of the queue

Specified by:

getSize in interface QueueInfoDelegate

addAll

public boolean addAll(Collection<? extends Serializable> items)

Description copied from interface: QueueInfoDelegate

Appends all of the elements in the specified collection to the queue (optional operation).

Specified by:

addAll in interface QueueInfoDelegate

Parameters:

items - to be added to the queue

Returns:

true if this queue changed as a result of the call