tcljava-user

[tcljava-user] Java Keyword - "this".

[<PFi...@hb...>]

How do I code the java keyword "this" in JACL?

JAVA Code.

adminClient.addNotificationListener(nodeAgent, this, null, null);

JACL Code.

$AdminClientI addNotificationListener $nodeAgent this $nullI $nullI

error in procedure java::call:
"this" is not an object handle of class 
"javax.management.NotificationListener"

I use java::null to get a handle to the null Java reference.  Is there 
something similar for the "this" keyword or a work around?

Regards.

Patrick.

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Re: [tcljava-user] Java Keyword - "this".

[Tom P. <tpo...@ny...>]

On Fri, Oct 28, 2005 at 11:22:52AM +0800, PFi...@hb... wrote:
> How do I code the java keyword "this" in JACL?
> 
> JAVA Code.
> 
> adminClient.addNotificationListener(nodeAgent, this, null, null);
> 
> JACL Code.
> 
> $AdminClientI addNotificationListener $nodeAgent this $nullI $nullI
> 


Wouldn't you just just $AdminClientI, as in:

    $AdminClientI addNotificationListener $nodeAgent $AdminClientI $nullI $null



-- 
Tom Poindexter
tpo...@ny...
http://www.nyx.net/~tpoindex/

Re: [tcljava-user] Java Keyword - "this".

[<PFi...@hb...>]

Tried that but got:

"error in procedure java::call: expected object of type 
javax.management.Notifica
tionListener but got "java0x3" (com.ibm.websphere.management.AdminClient)"

AdminClient is created using AdminClientFactory "set AdminClientI [ 
java::call AdminClientFactory createAdminClient $PropertiesI ]"

The notification listener is created using "AdminClientI 
addNotificationListener $nodeAgentBean this $nullI $nullI"

The addNotificationListener method takes a NotificationListener object 
argument which is denoted by the "this" keyword in the statement above.  I 
suppose this acts recursively. 
public void addNotificationListener(javax.management.ObjectName name,
                                    javax.management.NotificationListener 
listener,
                                    javax.management.NotificationFilter 
filter,
                                    java.lang.Object handback)
                             throws 
javax.management.InstanceNotFoundException,
                                    ConnectorException

NotificationListener is an interface with no static methods so I cannot 
create it outside of an addNotificationListener method. 

If you are interested the javadoc for the IBM WebSphere Application 
ServerTM, Release 5
API Specification is at:

http://publib.boulder.ibm.com/infocenter/wasinfo/v5r0/index.jsp?topic=/com.ibm.websphere.base.doc/info/aes/javadoc/ae/index.html

The javadoc for NotificationListener is: 

javax.management
Interface NotificationListener

Method Summary
 void   handleNotification(Notification notification, java.lang.Object 
handback)
          Invoked when a JMX notification occurs.
 

Method Detail
handleNotification

public void handleNotification(Notification notification,
                               java.lang.Object handback)

    Invoked when a JMX notification occurs. The implementation of this 
method should return as soon as possible, to avoid blocking its 
notification broadcaster.

    Parameters:
        notification - The notification.
        handback - An opaque object which helps the listener to associate 
information regarding the MBean emitter. This object is passed to the 
MBean during the addListener call and resent, without modification, to the 
listener. The MBean object should not use or modify the object.




Regards.

Patrick.


===================================================
HBF Health Funds Inc. a registered organisation under the National Health Act
HBF Insurance Pty Ltd ACN  009 268 277
This email is a confidential communication intended only for the named Addressee(s). 
If you are not that person any disclosure, copying, distribution or use of this email
or the information in it is prohibited. Please notify us immediately by 
telephone, (+61) 08 9265 6111 or return email and delete this email.
The views in this email may be personal to the author and not those of HBF.

Re: [tcljava-user] Java Keyword - "this".

[D.J.Hagberg <dha...@mi...>]

Patrick,

I'm not sure if I'm permitted to reply to your message, based on the 
nasty notice at the bottom of your email but here goes --

Well, there is no straight equivalent, since the Jacl code isn't really 
a Java object.  You would need to pass in some /other/ Java object that 
implements the required interface -- in your case an instance of 
NotificationListener.

I don't believe that Jacl has the capabilities that some other JVM 
scripting languages (Rhino, Jython, and Groovy come to mind) for the 
script to implement a particular interface.  Perhaps I stand to be 
corrected?

You may be able to extend the interpreter to provide a facility like 
this using JDK 1.3+'s dynamic proxy support, unless someone's done this 
already.

			-=- D. J.

On Oct 27, 2005, at 9:22 PM, <PFi...@hb...> wrote:
> How do I code the java keyword "this" in JACL?
>
> JAVA Code.
>
> adminClient.addNotificationListener(nodeAgent, this, null, null);
>
> JACL Code.
>
> $AdminClientI addNotificationListener $nodeAgent this $nullI $nullI
>
> error in procedure java::call:
> "this" is not an object handle of class
> "javax.management.NotificationListener"
>
> I use java::null to get a handle to the null Java reference.  Is there
> something similar for the "this" keyword or a work around?
>
> Regards.
>
> Patrick.
>
> ===================================================
> HBF Health Funds Inc. a registered organisation under the National 
> Health Act
> HBF Insurance Pty Ltd ACN  009 268 277
> This email is a confidential communication intended only for the named 
> Addressee(s).
> If you are not that person any disclosure, copying, distribution or 
> use of this email
> or the information in it is prohibited. Please notify us immediately by
> telephone, (+61) 08 9265 6111 or return email and delete this email.
> The views in this email may be personal to the author and not those of 
> HBF.