CLIPSJNI.SymbolValue cannot be cast to CLIPSJNI.MultifieldValue

StackOverflow https://stackoverflow.com/questions/17867802

  •  04-06-2022
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Question

I'm trying to run the example CLIPS GUI projects, both versions 0.2 and 0.3, however without success. Nothing special - I create a simple Eclipse project with the codes, using Debian 64bit and I always end up with the "CLIPSJNI.SymbolValue cannot be cast to CLIPSJNI.MultifieldValue" exception. I got the libCLIPSJNI.so in /usr/lib64. Any help or suggestions appreciated.

Was it helpful?

Solution

I think your issue is that either the rule or resource files are not being found in your projects. There are probably multiple (or better) ways to do this, but what I did was create a CLIPSJNI project to contain the CLIPSJNI.dll, CLIPSJNI.jar, and libCLIPSJNI.jnilib files and then a separate project for each of the demos. I placed the clp files at the root level of the demo project, the java code within the src directory and the resources folder within the src directory:

Animal
   src
      AnimalDemo.java
      resources
         AnimalResources.properties
            .
            .
            .
   animaldemo.clp
   bcdemo.clp

I placed an archive zip of the projects at https://sourceforge.net/projects/clipsrules/files/CLIPS/Misc/: CLIPSJNI_0_3_Eclipse_projects_64Bit.zip

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