Re: WSRP property change notifications

> Hello Chris!
>
> Thanks for your swift reply!  I pasted the code for MyCapability.java.  The value of the _FrameDropping and _CPUload variables is correctly set in the initialize() and initializeCompleted() methods.  I added a small comment where it goes wrong (just in front of the iterator creation).
>
> Thx!
>
> public class MyCapability extends AbstractManageabilityCapability implements IMyCapability
> {
>     private int _CPUload;
>     private int _oldCPUload;
>     private int _FrameDropping;
>     private boolean _playing;
>
>     private JMPlayer _mplayer;
>     private static final QName[] _PROPERTIES = new QName[]
>     {
>         new QName(NAMESPACE_URI, "CPUload", PREFIX),
>         new QName(NAMESPACE_URI, "FrameDropping", PREFIX)
>     };
>
>     public void initialize() throws SoapFault
>     {
>         //
>         //The following call is necessary to property initialize the resource
>         //
>         super.initialize();
>
>         //
>         // perform intitialization of the following non-primitive properties
>         //
>     _FrameDropping = 0;
>     _CPUload = _oldCPUload = HelloCPU.getCPULoad();
>     _playing = false;
>     }
>
>     public void initializeCompleted() throws SoapFault
>     {
>         super.initializeCompleted();
>
>         // every once in a while update CPU load
>         Thread cpumon = new Thread() {
>             public void run()
>             {
>                 while (true) {
>                     try {
>             setCPUload(HelloCPU.getCPULoad());
>                         Thread.currentThread().sleep(5000L);;
>                     } catch(InterruptedException exc) {
>                getLog().warning("\nCPU monitor thread interrupted\n");
>               }
>                 }
>             }
>         };
>         cpumon.start();
>
>         // alert on property change that occurred outside of WSRP requests
>         QName cpuElem = _PROPERTIES[0];
>     Element oldValue = XmlUtils.createElement(cpuElem, new Integer(_oldCPUload));
>     Element newValue = XmlUtils.createElement(cpuElem, new Integer(_CPUload));
>     ResourcePropertyCollection wsrp = getWsResource().getPropertyCollection();
> // --> the returned WSRP variable = NULL <--
>
>     Iterator i = wsrp.getChangeListeners(cpuElem);
>
>     while(i.hasNext()) {
>         PropertyChangeListener listener = (PropertyChangeListener)i.next();
>         listener.propertyChanged(oldValue, newValue);
>         }
>     }
>
>     public QName[] getPropertyNames()
>     {
>         return _PROPERTIES;
>     }
>
>     public int getCPUload()
>     {
>         return _CPUload;
>     }
>
>     public void setCPUload(int param0)
>     {
>     _oldCPUload = _CPUload;
>         _CPUload = param0;
>     }
>
>     public int getFrameDropping()
>     {
>         return _FrameDropping;
>     }
>
>     public void setFrameDropping(int param0)
>     {
>         _FrameDropping = param0;
>     }
>
>     public void start() throws Exception    {
>     _mplayer = new JMPlayer();
>     _mplayer.open(new File("D:/fortis.avi"));
>     //_mplayer.setFullscreen(1);
>         _playing = true;
>     }
>
>     public void pause() throws Exception {
>     if(_playing && (_mplayer != null)) {
>        _mplayer.togglePlay();
>            _playing = false;
>     }
>     }
>
>     public void resume() throws Exception    {
>     if(!_playing && (_mplayer != null)) {
>        _mplayer.togglePlay();
>            _playing = true;
>     }
>     }
>
>     public void stop() throws Exception    {
>         if(_mplayer != null) _mplayer.close();
>     }
> }
>
> --- On Fri, 3/6/09, Chris Twiner <chris.twiner@...> wrote:
> From: Chris Twiner <chris.twiner@...>
> Subject: Re: WSRP property change notifications
> To: muse-user@..., jonas_buys@...
> Date: Friday, March 6, 2009, 2:48 PM
>
> Its great to hear about new users, there have been many in the last
> months, truly great.
>
> Could you please send the source code for the capability that contains
> the property and the code that triggers the value update?
>
> I wonder if the capability with the properties is not the same as the
> one that calls getPropertyCollection.
>
> On Fri, Mar 6, 2009 at 2:20 PM, Jonas Buys <jonas_buys@...> wrote:
>> Hi,
>>
>> Please forgive be about my ignorance of MUSE, as I am just starting to use
> it, but so far I'm *very* fond of it!
>>
>> Unfortunately,
>> I am facing this rather peculiar issue.  I want to have WSRP change
>> notifications automatically published for an _internally changed_
>> metric variable.  To accomplish this task, I followed the procedure
>> described in
>>
> http://ws.apache.org/muse/docs/2.2.0/manual/how-to/publish-wsrp-notifications.html
> using the PropertyChangeListeners.
>>
>> BUT
>> - even though the resource property document is correctly populated
>> with my defined properties and their values - the wsrp variable results
>> in null:
>> ResourcePropertyCollection wsrp = getWsResource().getPropertyCollection();
>> (code inside myCapab.java's initializeCompleted method).
>> The WsResource appears to be set correctly, I did a toString() for
>>  that.
>>
>> Any help would be much appreciated!
>>
>> Cheers, Jonas
>>
>>
>>
>
>
>
>