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Re[2]: JNIPort for VisualWorks
by Michael Lucas-Smith
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But according to Steve Jobs, nobody uses Java anymore.
> Hi Joachim,
> I'm definitively interested on that, because I think it is strategically
> important for Smalltalkers to have a "bridge" to Java world. I think a
> Smalltalk community knowledgeable on Java should help you to keep going
> on. I can help as a user, because I don't have any experience with Java
> development.
> Thanks for you effort and best regards
> Janko
> joachim.geidel@... wrote:
>> Hi all,
>>
>> I think it's about time to get this off my chest:
>>
>> I've been working on porting Chris Uppal's JNIPort to VisualWorks. JNIPort is a class library which allows Java code to be invoked from Smalltalk, using a regular Java VM to execute the Java code. If you are interested in details, have a look at
>> http://www.metagnostic.org/DolphinSmalltalk/JNIPort.html
>>
>> JNIPort would allow instant access to any Java class library, and even calling back into VisualWorks (although with some limitations when multithreading is involved). This would open up a whole new world - e.g. monitoring a VisualWorks application server using JMX, integration of Java messaging using JMS, using all of those free and commercial Java libraries available on the market. Chris even has an example for opening a Swing GUI showing a hierarchy of Smalltalk classes - certainly not something you would want to do in a real application, but it shows what's possible.
>>
>> The current state of the VisualWorks port is "can calculate the abs of a float, but crashes with access violations when trying to do something useful (after successfully generating wrappers for about 100 real Java classes)". Currently, it's Windows only, but it should be easy to include other platforms. The original Dolphin Smalltalk version works perfectly, of course - the access violations are a feature which I introduced. Once this bug is corrected, the rest should be easy.
>>
>> For various reasons, I haven't had enough time to finish the port during the last few months, and I hope that someone from the community might help with debugging the access violations. This does not mean that I'm abandoning the project, leaving the mess to someone else. I still want to do it, but given the circumstances, I think that it might make more sense if I give others a chance to participate. ;-) I'll post the current state of the code to the public repository as soon as possible (probably next weekend) together with instructions about other files from metagnostic.org which you'll need.
>>
>> Just a quick check to see if it's worth the effort: Anybody interested, either in using JNIPort, or in participating?
>>
>> Joachim Geidel
>>
>>
> Hi Joachim,
> I'm definitively interested on that, because I think it is strategically
> important for Smalltalkers to have a "bridge" to Java world. I think a
> Smalltalk community knowledgeable on Java should help you to keep going
> on. I can help as a user, because I don't have any experience with Java
> development.
> Thanks for you effort and best regards
> Janko
> joachim.geidel@... wrote:
>> Hi all,
>>
>> I think it's about time to get this off my chest:
>>
>> I've been working on porting Chris Uppal's JNIPort to VisualWorks. JNIPort is a class library which allows Java code to be invoked from Smalltalk, using a regular Java VM to execute the Java code. If you are interested in details, have a look at
>> http://www.metagnostic.org/DolphinSmalltalk/JNIPort.html
>>
>> JNIPort would allow instant access to any Java class library, and even calling back into VisualWorks (although with some limitations when multithreading is involved). This would open up a whole new world - e.g. monitoring a VisualWorks application server using JMX, integration of Java messaging using JMS, using all of those free and commercial Java libraries available on the market. Chris even has an example for opening a Swing GUI showing a hierarchy of Smalltalk classes - certainly not something you would want to do in a real application, but it shows what's possible.
>>
>> The current state of the VisualWorks port is "can calculate the abs of a float, but crashes with access violations when trying to do something useful (after successfully generating wrappers for about 100 real Java classes)". Currently, it's Windows only, but it should be easy to include other platforms. The original Dolphin Smalltalk version works perfectly, of course - the access violations are a feature which I introduced. Once this bug is corrected, the rest should be easy.
>>
>> For various reasons, I haven't had enough time to finish the port during the last few months, and I hope that someone from the community might help with debugging the access violations. This does not mean that I'm abandoning the project, leaving the mess to someone else. I still want to do it, but given the circumstances, I think that it might make more sense if I give others a chance to participate. ;-) I'll post the current state of the code to the public repository as soon as possible (probably next weekend) together with instructions about other files from metagnostic.org which you'll need.
>>
>> Just a quick check to see if it's worth the effort: Anybody interested, either in using JNIPort, or in participating?
>>
>> Joachim Geidel
>>
>>
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