private Optional compare(boolean isMax, LambdaExpression le) {
Object result = null;
if (iterator.hasNext()) {
Object obj = iterator.next();
result = obj;
}
while (iterator.hasNext()) {
Object obj = iterator.next();
if (isMax
&& ELSupport.coerceToNumber(null, le.invoke(obj, result), Integer.class).intValue() > 0) {
result = obj;
} else if (!isMax
&& ELSupport.coerceToNumber(null, le.invoke(obj, result), Integer.class).intValue() < 0) {
result = obj;
}
}
if (result == null) {
return Optional.EMPTY;
} else {
return new Optional(result);
}
}
@Override
public int compare(Object o1, Object o2) {
return ELSupport.coerceToNumber(null, le.invoke(o1, o2), Integer.class).intValue();
}