com.sun.enterprise.resource.pool.waitqueue

Class DefaultPoolWaitQueue

java.lang.Object

com.sun.enterprise.resource.pool.waitqueue.DefaultPoolWaitQueue

All Implemented Interfaces:

PoolWaitQueue

public class DefaultPoolWaitQueue
extends Object
implements PoolWaitQueue

Default wait queue for the connection pool

Author:

Jagadish Ramu

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	_logger

Fields inherited from interface com.sun.enterprise.resource.pool.waitqueue.PoolWaitQueue

DEFAULT_WAIT_QUEUE, THREAD_PRIORITY_BASED_WAIT_QUEUE

Constructor Summary

Constructors

Constructor and Description
DefaultPoolWaitQueue()

Method Summary

Modifier and Type	Method and Description
void	addToQueue(Object waitMonitor) resource requesting thread will be added to queue and the object on which it is made to wait is returned
protected void	debug(String debugStatement)
Collection	getQueueContents() used to get access to the list of waiting clients Useful in case of rolling over from one pool to another eg: transparent-dynamic-pool-reconfiguration.
int	getQueueLength() returns the length of wait queue
Object	peek() returns (does not remove) the first object (resource request) from the queue
Object	remove() removes the first object (resource request) from the queue
boolean	removeFromQueue(Object o) removes the specified object (resource request) from the queue

Methods inherited from class java.lang.Object

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

Field Detail

_logger

protected static final Logger _logger

Constructor Detail

DefaultPoolWaitQueue

public DefaultPoolWaitQueue()

Method Detail

getQueueLength

public int getQueueLength()

Description copied from interface: PoolWaitQueue

returns the length of wait queue

Specified by:

getQueueLength in interface PoolWaitQueue

Returns:

length of wait queue.

addToQueue

public void addToQueue(Object waitMonitor)

Description copied from interface: PoolWaitQueue

resource requesting thread will be added to queue
and the object on which it is made to wait is returned

Specified by:

addToQueue in interface PoolWaitQueue

Parameters:

waitMonitor - Object

removeFromQueue

public boolean removeFromQueue(Object o)

Description copied from interface: PoolWaitQueue

removes the specified object (resource request) from the queue

Specified by:

removeFromQueue in interface PoolWaitQueue

Parameters:

o - Object

Returns:

boolean indicating whether the object was removed or not

remove

public Object remove()

Description copied from interface: PoolWaitQueue

removes the first object (resource request) from the queue

Specified by:

remove in interface PoolWaitQueue

Returns:

Object first object

peek

public Object peek()

Description copied from interface: PoolWaitQueue

returns (does not remove) the first object (resource request) from the queue

Specified by:

peek in interface PoolWaitQueue

Returns:

Object first object

getQueueContents

public Collection getQueueContents()

Description copied from interface: PoolWaitQueue

used to get access to the list of waiting clients
Useful in case of rolling over from one pool to another eg: transparent-dynamic-pool-reconfiguration.

Specified by:

getQueueContents in interface PoolWaitQueue

Returns:

Collection

debug

protected void debug(String debugStatement)