import com.declarativa.interprolog.* ; import com.declarativa.interprolog.util.* ; import com.declarativa.interprolog.swi.* ; public class HelloWorld { public static void main(String [] args) { PrologEngine engine = new SWISubprocessEngine() ; boolean test = false ; test = engine.deterministicGoal("listing.") ; System.out.println("Rezultat: " + test) ; } }
Pojawia się podczas uruchomienia następujący błąd:
Exception in thread "main" com.declarativa.interprolog.util.IPException: Could not launch Prolog executable:java.io.IOException: CreateProcess: null\plcon error=2 at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:171) at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:176) at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:184) at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:188) at com.declarativa.interprolog.SWISubprocessEngine.<init>(SWISubprocessEngine.java:29) at HelloWorld.main(HelloWorld.java:8)
Strony przydatne przy pojawieniu się tego typu problemów: http://www.nabble.com/Re:-interprolog-%2B-windows-(solved)-(fwd)-td15907118.html
Korzystając z XSB
Exception in thread "main" com.declarativa.interprolog.util.IPException: Could not launch Prolog executable:java.io.IOException: CreateProcess: null\xsb error=2 at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:171) at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:176) at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:184) at com.declarativa.interprolog.SubprocessEngine.<init>(SubprocessEngine.java:188) at com.declarativa.interprolog.XSBSubprocessEngine.<init>(XSBSubprocessEngine.java:33) at HelloWorld.main(HelloWorld.java:6)
Okazało się, że bez podania w konstruktorze SWIPrologEngine dokładnej ścieżki do pliku uruchomieniowego prologu.
import com.declarativa.interprolog.* ; import com.declarativa.interprolog.util.* ; import com.declarativa.interprolog.swi.* ; public class HelloWorld { public static void main(String [] args) { PrologEngine engine = new SWISubprocessEngine("C:\\Programme\\pl\\bin\\plcon.exe") ; boolean test = false ; test = engine.deterministicGoal("listing") ; System.out.println("Rezultat: " + test) ; } }
Okazuje się również, że nie należy podawać kropki na końcu wywołanego polecenia prologowego.
import com.declarativa.interprolog.* ; import com.declarativa.interprolog.gui.SWISubprocessEngineWindow; public class CarInterProlog { public static void main(String [] args) { SWISubprocessEngine engine = new SWISubprocessEngine("C:\\Programme\\pl\\bin\\plcon.exe") ; SWISubprocessEngineWindow window = new SWISubprocessEngineWindow(engine) ; engine.deterministicGoal("[car]") ; engine.deterministicGoal("start") ; } }
Opis uruchomienia kodu (z rozdziału 2):