Helper Data

Jan Burse, created Aug 27. 2018
package example07;
import jekpro.platform.headless.ToolkitLibrary;
import jekpro.tools.call.Interpreter;
import jekpro.tools.call.InterpreterException;
import jekpro.tools.call.InterpreterMessage;
import jekpro.tools.term.Knowledgebase;
/**
* <p>Java code for the data holder.</p>
* <p>Same as the Swing version.</p>
* <p>
* Warranty & Liability
* To the extent permitted by applicable law and unless explicitly
* otherwise agreed upon, XLOG Technologies GmbH makes no warranties
* regarding the provided information. XLOG Technologies GmbH assumes
* no liability that any problems might be solved with the information
* provided by XLOG Technologies GmbH.
* <p/>
* Rights & License
* All industrial property rights regarding the information - copyright
* and patent rights in particular - are the sole property of XLOG
* Technologies GmbH. If the company was not the originator of some
* excerpts, XLOG Technologies GmbH has at least obtained the right to
* reproduce, change and translate the information.
* <p/>
* Reproduction is restricted to the whole unaltered document. Reproduction
* of the information is only allowed for non-commercial uses. Selling,
* giving away or letting of the execution of the library is prohibited.
* The library can be distributed as part of your applications and libraries
* for execution provided this comment remains unchanged.
* <p/>
* Trademarks
* Jekejeke is a registered trademark of XLOG Technologies GmbH.
*/
public final class Data {
public static Knowledgebase know;
/**
* <p>If necessary do set up of the knowledge base.</p>
*/
public synchronized static void initKnowledgebase() {
if (know != null)
return;
try {
know = new Knowledgebase(ToolkitLibrary.DEFAULT);
/* setup the Prolog runtime */
Interpreter inter = know.iterable();
Knowledgebase.initKnowledgebase(inter);
/* load the Prolog code */
Object consultGoal = inter.parseTerm("consult(library(example07/table))");
inter.iterator(consultGoal).next().close();
} catch (InterpreterMessage x) {
throw new RuntimeException(x);
} catch (InterpreterException x) {
throw new RuntimeException(x);
}
}
}

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