// CHECKSTYLE:OFF MagicNumber
@Override
public Rating poll() {
Preconditions.checkState(rating != null, "cursor is closed");
while (rowCursor.hasNext()) {
String[] fields = rowCursor.next();
if (fields.length < 3) {
logger.error("{}:{}: invalid input, skipping line", fileName, rowCursor.getLineNumber());
continue;
}
rating.setUserId(Long.parseLong(fields[0]));
rating.setItemId(Long.parseLong(fields[1]));
rating.setRating(Double.parseDouble(fields[2]));
rating.setTimestamp(-1);
if (fields.length >= 4) {
rating.setTimestamp(Long.parseLong(fields[3]));
}
return rating;
}
return null;
}
@Override
public void close() {
rowCursor.close();
rating = null;
}