[Yap-users] YAP Prolog, Java and JPL 7

[Christos V. <chr...@gm...>]

Dear fellow yap-users,

I am a researcher on Complex Event Recognition and I use Java along with
Prolog for my current experiments. More specifically, I have built a Java
application that, among other things, uses Prolog to execute queries and
perform logical inference. I have been using the new JPL 7 library in order
to import a SWI Prolog engine in this Java application.

I would like to repeat my experiments, using YAP Prolog this time, but I am
facing difficulties. It is mentioned in YAP Prolog's documentation that YAP
Prolog can be used to interact with Java via the JPL library. However, I
struggle to find in the JPL's documentation the way of switching from SWI
to YAP.

I have spotted a couple of methods, such as

JPL.setNativeLibraryPath(java.lang.String newPath)

or

JPL.setDefaultInitArgs(java.lang.String[] args)

but the accompanying javadoc/documentation is anything but verbose, thus
making it difficult for me to understand if these methods are what I need
to switch to YAP and how to call them properly.

So, first of all, can I create and use an instance of a YAP engine inside a
Java program using JPL 7? If so, can anyone provide some more specific
information on how to do it?

Thank you in advance.

Christos Vlassopoulos
Associate Researcher | IIT | NCSR "Demokritos"
B.Sc. in Computer Science | AUEB
GR