private static final boolean validArgumentTypes(Object[] args) {
for (Object arg : args) {
if (!Types.isValidGreqlValue(arg)) {
throw new GreqlException(
"Type unknown to GReQL: " + arg.getClass().getName() + ", value: " + arg);
}
}
return true;
}
public static final Object apply(FunctionInfo fi, Object... args) {
assert fi != null;
if (!fi.acceptsUndefinedValues) {
for (Object arg : args) {
if ((arg == null) || (arg == Undefined.UNDEFINED)) {
return Undefined.UNDEFINED;
}
}
}
for (Signature sig : fi.signatures) {
if (sig.matches(args)) {
try {
Object result = sig.evaluateMethod.invoke(fi.function, args);
assert Types.isValidGreqlValue(result);
return result == null ? Undefined.UNDEFINED : result;
} catch (IllegalArgumentException e) {
if (e.getCause() instanceof GreqlException) {
throw (GreqlException) e.getCause();
} else {
throw new GreqlException(
"When applying function " + fi.name + ": " + e.getMessage(), e.getCause());
}
} catch (IllegalAccessException e) {
if (e.getCause() instanceof GreqlException) {
throw (GreqlException) e.getCause();
} else {
throw new GreqlException(
"When applying function " + fi.name + ": " + e.getMessage(), e.getCause());
}
} catch (InvocationTargetException e) {
if (e.getCause() instanceof GreqlException) {
throw (GreqlException) e.getCause();
} else {
throw new GreqlException(
"When applying function " + fi.name + ": " + e.getMessage(), e.getCause());
}
}
}
}
StringBuilder sb = new StringBuilder();
sb.append("Function '").append(fi.name).append("' not defined for argument types (");
String delim = "";
for (Object arg : args) {
sb.append(delim).append(Types.getGreqlTypeName(arg));
delim = ", ";
}
sb.append(")");
throw new GreqlException(sb.toString());
}