org.deegree_impl.enterprise
Class WFSServicePool

java.lang.Object
  java.util.TimerTask
      org.deegree_impl.tools.ObjectPool
          org.deegree_impl.enterprise.WFSServicePool

All Implemented Interfaces:

java.lang.Runnable

public class WFSServicePool

extends ObjectPool

class to manage the object pool. this is part of the combination of the object pool pattern an the singelton pattern.

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Version:

07.02.2001

Author:

Andreas Poth

Field Summary

private WFSCapabilities	capa
private Dispatcher	dispatcher
private static WFSServicePool	instance

Fields inherited from class org.deegree_impl.tools.ObjectPool

available, existingInstances, in_use, startLifeTime, startUsageTime

Fields inherited from class java.util.TimerTask

Constructor Summary

private

WFSServicePool(WFSCapabilities capa)

Method Summary

java.lang.Object	acuireObject()
void	destroy()
void	fill(int noOfInstances) fill the pool with the submitted number of instances
static WFSServicePool	getInstance(WFSCapabilities capa) realize singelton pattern using double checked locking pattern.
void	onObjectKill(java.lang.Object o) this method will be called when the submitted object will be removed from the pool
java.lang.String	toString()

Methods inherited from class org.deegree_impl.tools.ObjectPool

clear, getInstance, getMaxInstances, getMaxLifeTime, getMaxUsageTime, getUpdateInterval, releaseObject, run, setMaxInstances, setMaxLifeTime, setMaxUsageTime, setUpdateInterval

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static WFSServicePool instance

capa

private WFSCapabilities capa

dispatcher

private Dispatcher dispatcher

Constructor Detail

WFSServicePool

private WFSServicePool(WFSCapabilities capa)

Method Detail

getInstance

public static WFSServicePool getInstance(WFSCapabilities capa)

realize singelton pattern using double checked locking pattern.

Returns:

an instance of the object pool. it is gauranteed that there exists only one instance of pool for each submitted class name.

destroy

public void destroy()

acuireObject

public java.lang.Object acuireObject()
                              throws java.lang.Exception

Throws:

java.lang.Exception

fill

public void fill(int noOfInstances)
          throws java.lang.Exception

fill the pool with the submitted number of instances

Throws:

java.lang.Exception

onObjectKill

public void onObjectKill(java.lang.Object o)

this method will be called when the submitted object will be removed from the pool

Specified by:

onObjectKill in class ObjectPool

toString

public java.lang.String toString()

Overrides:

toString in class ObjectPool

Returns: