dynamic wsresource creation and destruction
-------------------------------------------
Key: MUSE-178
URL: https://issues.apache.org/jira/browse/MUSE-178
Project: Muse
Issue Type: Bug
Components: Core Engine - Resource and Capability APIs
Affects Versions: 2.0.0
Environment: Windows XP Pro (SP2)
Eclipse 3.2
Tomcat 5.0.30
Java SDK 1.5_07
Reporter: Lenni Madsen
Assigned To: Dan Jemiolo
We're currently trying out the muse frameworks ability to create and destroy
WDSM enabled WsResources, but we seem to have run into a slight problem with
the correct way to destroy these resources.
A fast overview goes as follows:
1) We've a factory to create resources on the fly.
2) We change a couple of the values held by the resource (to get the on-change
WS-N sent out)
3) Next we attempt to clean up, by destroying the WsResources
4) We run the whole thing again from 1) without restarting the Tomcat server
Notes regarding software usage:
MUSE 2.0.0
Java SDK 1.5_07
Axis 2.0
The printout from the shutdown (destruction) process is:
11-Jan-2007 14:21:27 org.apache.muse.core.SimpleResource shutdown
INFO: [ID = 'ResourceDestroyed'] The resource at 'WsResource' has been
destroyed.
Though it seems as if, even though the prepareShutdown() function has been
overridden, that our override doesn't run.
** overridden initializeComplete()
public void initializeCompleted() throws SoapFault {
super.initializeCompleted();
publishMessage("we have been created");
}
** overridden prepareShutdown()
public void prepareShutdown() throws SoapFault {
super.prepareShutdown();
getLog().info("calling shutdown");
}
Our problem is that upon the 2nd run of the process (without shutting down the
server) we get the following error message from the SimpleAdvertisement:
INFO: [ID = 'ResourceInitialized'] The resource at 'SubscriptionManager' has
been initialized.
java.lang.NullPointerException
at
org.apache.muse.ws.dm.muws.adv.impl.SimpleAdvertisement.isAdvertised(SimpleAdvertisement.java:32)
at
org.apache.muse.ws.dm.muws.adv.impl.AbstractAdvertisement.resourceAdded(AbstractAdvertisement.java:96)
at
org.apache.muse.core.SimpleResourceManager.addResource(SimpleResourceManager.java:108)
at
org.apache.muse.ws.notification.impl.SimpleNotificationProducer.subscribe(SimpleNotificationProducer.java:575)
at
org.apache.muse.ws.dm.muws.adv.impl.AbstractAdvertisement.subscribeInitialConsumer(AbstractAdvertisement.java:175)
... and a lot more
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