I was told that if you can't interface C++ from within a Java applet, or at
least that the applet won't work. Does anybody know anything about this?
>-----Mensaje original-----
>De:
[hidden email]
>[mailto:
[hidden email]]En nombre de Luigi
>Ballabio
>Enviado el: 10 July 2001 11:50
>Para: Gilbert Peffer; QuantLibUsers
>Asunto: Re: [Quantlib-users] java interface
>
>
>At 07:40 PM 7/9/01 +0200, Gilbert Peffer wrote:
>>What are the steps one has to take in order to interface Java with the
>>QuantLib C++ code? One method is through JNI (as far as I understood it),
>>but I think the other is through Python using the SWIG stuff.
>
>Hi Gilbert,
> I think you meant Jython - I don't know of other mainstream
>methods of interfacing Python and Java. Unfortunately, Jython can only
>import pure Python modules or Java classes, but not C/C++ Python
>extensions, so we're left in the cold there.
>
>The only way out - apart from high-level protocols like CORBA, but somehow
>I don't think that you want to write a C++ servant and a Java client first
>thing in the morning - seems to be JNI.
>
>SWIG used to have some Java support which was recently broken and is going
>to be reintroduced in release 1.3.6, due any day. I was about to take a
>look to the release candidate right now.
>
>We also thought of interfacing QL with Java through SWIG, but there was an
>issue which made it a painful experience, namely, C++ objects allocated on
>the heap by the constructor of the Java shadow object should be
>deallocated
>in its finalize() method. Unfortunately, finalize() is not
>guaranteed to be
>called upon destruction. This leads either to possible memory leaks or to
>having to manually call finalize() or some other delete() method
>whenever a
>QuantLib object goes out of scope.
>
>So thoughtful of the Java designers, but then again, I suppose that from
>day 1 JNI was designed to discourage developers from using it and
>have them
>go 100% Java instead...
>
>But enough with the rambling. The bottom line is: I'll have a look at the
>new SWIG release and report faithfully to the list.
>
>Bye for now,
> Luigi
>
>
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