ArrayList<RelationalFeature> rfeats =
new ArrayList<RelationalFeature>();
while (line != null && !line.equals("")) {
rfeats.add(new RelationalFeature(length, line, inputReader));
line = inputReader.readLine();
}
RelationalFeature[] rfeatsList = new RelationalFeature[rfeats.size()];
rfeats.toArray(rfeatsList);