Re: ada < - > java bindings wanted

[Ted Dennison <dennison@telepath.com>]

In article <FGD9E8.M5w@news.boeing.com>,
  "Constantine A. Sismanidis" <constantine.a.sismanidis@boeing.com>
wrote:
> will be using Rational's ada compiler. We *can* get this to work by
> having ada call C which will then call java (using the Java Native
> Interface); or java calling C (using the Java Native Interface), which
> will then call ada. However, we would very much prefer to call java
> directly from ada, and ada from java, in order to avoid the extra
> layers of code that would be required.

I'm not familiar with that particular compiler (unless it is the VADS
one, which I doubt highly). But if its an Ada 95 compiler, you should be
able to apply a "pragma Export (C, " to all the Ada routines you wish to
call from Java. That will make them look like C routines, which should
make your JNI happy.

There are lots of other little issues in interfacing to other languages
from Ada which are discussed in Annex B of the Ada LRM (a section
obscurely titled: "Interface to Other Languages") Its available online
at http://www.adahome.com/rm95/rm9x-B.html .

There are additional issues if your main routine is not Ada, but I'm
guessing that won't apply here.

--
T.E.D.


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