/**
* Executes a CycL instruction represented by a String.
*
* @param instruction a String who represents the CyL formula.
* @return the result of the conversation with Cyc in a String format. Converse directly Cyt term
* for false in "FALSE" and Cyc term for true in "TRUE".
*/
public String executeCycL(String instruction) throws CycSupportError {
String result = null;
createAccess();
try {
// Execute the CycL formula and convert its result into a String.
result = (myAccess.converseObject(instruction)).toString();
if (result.equals(CYC_FALSE)) {
result = FALSE;
} else if (trimBracketAndQuote(result).equals(CYC_FALSE)) {
// converseObject, al posto di TRUE, ritorna una CycList con NIL
// all'interno, come (NIL)
result = TRUE;
}
checkAndStore(instruction, result);
return result;
} catch (CycApiException ce) {
checkAndStore(instruction, "Cyc communication error!");
throw new CycSupportError("Cyc communication error!");
} catch (UnknownHostException oe) {
checkAndStore(instruction, "Unable to find OpenCyc!");
throw new CycSupportError("Unable to find OpenCyc!");
} catch (IOException ioe) {
checkAndStore(instruction, "I/O error!");
throw new CycSupportError("I/O error!");
} catch (Exception e) {
checkAndStore(instruction, "Unknow error!");
throw new CycSupportError("Unknow error!");
}
}
@SuppressWarnings("unchecked")
public String executeRandomCycL(String formula) throws CycSupportError {
createAccess();
try {
Object res = myAccess.converseObject(formula);
// This will store the result
String result = res.toString();
if (result.equals(CYC_FALSE)) {
result = FALSE;
checkAndStore(formula, result);
} else if (trimBracketAndQuote(result).equals(CYC_FALSE)) {
result = TRUE;
checkAndStore(formula, result);
} else if (res instanceof CycList) {
checkAndStore(formula, result);
CycList cl = ((CycList) res).randomPermutation();
ArrayList results = getVariables(cl);
if (results.size() > 0) {
result = getContentVariable(results.get(0).toString());
} else result = UNKNOWN;
}
return result;
} catch (CycApiException ce) {
ce.printStackTrace();
checkAndStore(formula, "Cyc communication error!");
throw new CycSupportError("Cyc communication error!");
} catch (UnknownHostException oe) {
checkAndStore(formula, "Unable to find OpenCyc!");
throw new CycSupportError("Unable to find OpenCyc!");
} catch (IOException ioe) {
checkAndStore(formula, "I/O error!");
throw new CycSupportError("I/O error!");
} catch (Exception e) {
checkAndStore(formula, "Unknow error!");
throw new CycSupportError("Unknow error!");
}
}