org.deegree_impl.enterprise
Class WMServicePool

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

All Implemented Interfaces:

java.lang.Runnable

public class WMServicePool

extends ObjectPool

Pool of WMService-Instances. Singleton.

Version:

$Revision: 1.9 $ $Date: 2004/03/01 07:45:47 $

Author:

Markus Schneider, Andreas Poth

Field Summary

private WMSCapabilities	capabilities all WMServices of this pool conform to these capabilities
private static WMServicePool	instance the only instance of this class

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

WMServicePool(WMSCapabilities capabilities) Private constructor to realize the singleton pattern.

Method Summary

java.lang.Object	acuireObject() Acquires an instance of WMService from the pool.
void	destroy() Clears the pool.
void	fill(int noOfInstances) Fills the pool with the given number of instances.
static WMServicePool	getInstance(WMSCapabilities capabilities) Returns the only instance of this class.
void	onObjectKill(java.lang.Object o) This method will be called when the submitted object is removed from the pool.
java.lang.String	toString() Produces a textual representation of this object.

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 WMServicePool instance

the only instance of this class

capabilities

private WMSCapabilities capabilities

all WMServices of this pool conform to these capabilities

Constructor Detail

WMServicePool

private WMServicePool(WMSCapabilities capabilities)
               throws java.lang.Exception

Private constructor to realize the singleton pattern.

Parameters:

capabilities - the capabilities the pool objects must conform to

Method Detail

getInstance

public static WMServicePool getInstance(WMSCapabilities capabilities)
                                 throws java.lang.Exception

Returns the only instance of this class.

Returns:

the only instance of WMServicePool

Throws:

java.lang.Exception

destroy

public void destroy()

Clears the pool. Objects in use while the method has been called won't be put back to the pool if released back through the releaseObject method afterwards.

acuireObject

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

Acquires an instance of WMService from the pool.

Returns:

an instance of WMService

Throws:

java.lang.Exception

fill

public void fill(int noOfInstances)

Fills the pool with the given number of instances.

Parameters:

noOfInstances - number of instances to create

onObjectKill

public void onObjectKill(java.lang.Object o)

This method will be called when the submitted object is removed from the pool. FIXME!!!

Specified by:

onObjectKill in class ObjectPool

Parameters:

o - the object to kill

toString

public java.lang.String toString()

Produces a textual representation of this object.

Overrides:

toString in class ObjectPool

Returns: