🚀 go-pugleaf

Erica Wheatcroft wrote:
> Hi -
> 
> I have a design problem and am looking for input.
> 
> I have a a java app that uses JNI to communicate with a c++ dll. However i 
> would like to implement a observer/observable design between the two and i'm 
> not sure how i would fire "an event" from c++ to java.
> 
> Can anyone point me to some further reading that would help me?
> 
> Thanks in advance..
> Erica 
> 
> 

Well, I have 2 JNI books, and neither of them covers this topic 
specifically.  The closest either comes is the "Essential JNI" book, 
with it's coverage of exception throwing and thread handling.  Reading 
those 2 chapters carefully, you might be able to come up with some ideas.

-- 

Regards,

Lori Olson [TeamB]

"Lori M Olson [TeamB]" <javadragon@techie.com> wrote in message
news:41def046$1@newsgroups.borland.com...
> Erica Wheatcroft wrote:
> > Hi -
> >
> > I have a design problem and am looking for input.
> >
> > I have a a java app that uses JNI to communicate with a c++ dll. However
i
> > would like to implement a observer/observable design between the two and
i'm
> > not sure how i would fire "an event" from c++ to java.
> >
> > Can anyone point me to some further reading that would help me?
> >
> > Thanks in advance..
> > Erica
> >
> >
>
> Well, I have 2 JNI books, and neither of them covers this topic
> specifically.  The closest either comes is the "Essential JNI" book,
> with it's coverage of exception throwing and thread handling.  Reading
> those 2 chapters carefully, you might be able to come up with some ideas.
>

Maybe a bit late :) but doesn't this call for a proxy pattern?
Create a full Java proxy for the JNI operation which is itself the
observable and fires the event when the JNI operation has completed?

Hmm. A Proxy? Can you point me to some more info?

Thanks.. and never to late..

Erica
"Jeroen Wenting" <jwenting@hornet.demon.nl> wrote in message 
news:420eef01$2@newsgroups.borland.com...
>
> "Lori M Olson [TeamB]" <javadragon@techie.com> wrote in message
> news:41def046$1@newsgroups.borland.com...
>> Erica Wheatcroft wrote:
>> > Hi -
>> >
>> > I have a design problem and am looking for input.
>> >
>> > I have a a java app that uses JNI to communicate with a c++ dll. 
>> > However
> i
>> > would like to implement a observer/observable design between the two 
>> > and
> i'm
>> > not sure how i would fire "an event" from c++ to java.
>> >
>> > Can anyone point me to some further reading that would help me?
>> >
>> > Thanks in advance..
>> > Erica
>> >
>> >
>>
>> Well, I have 2 JNI books, and neither of them covers this topic
>> specifically.  The closest either comes is the "Essential JNI" book,
>> with it's coverage of exception throwing and thread handling.  Reading
>> those 2 chapters carefully, you might be able to come up with some ideas.
>>
>
> Maybe a bit late :) but doesn't this call for a proxy pattern?
> Create a full Java proxy for the JNI operation which is itself the
> observable and fires the event when the JNI operation has completed?
>
>
> 

Erica Wheatcroft wrote:

> Hmm. A Proxy? Can you point me to some more info?
> 
> Thanks.. and never to late..
> 
> Erica
> "Jeroen Wenting" <jwenting@hornet.demon.nl> wrote in message 
> news:420eef01$2@newsgroups.borland.com...
> 
>>
>>Maybe a bit late :) but doesn't this call for a proxy pattern?
>>Create a full Java proxy for the JNI operation which is itself the
>>observable and fires the event when the JNI operation has completed?
>>
>>
>>

Google search: proxy +pattern +jni

http://www.cs.technion.ac.il/~gabr/papers/cuj_jni.pdf

-- 

Regards,

Lori Olson [TeamB]

------------

Save yourself, and everyone else, some time and search the
newsgroups and the FAQ-O-Matic before posting your next
question.

Google Advanced Newsgroup Search
     http://www.google.ca/advanced_group_search
Other Newsgroup Searches:
     http://www.borland.com/newsgroups/ngsearch.html
Joi Ellis's FAQ-O-Matic:
     http://www.visi.com/~gyles19/fom-serve/cache/1.html