private void initializeCSVReader(FunctionContext context) throws IOException {
this.csvReader = new CSVReader(new FileReader(context.getParameterAsString(IP_CSV_FILE)));
this.headers = csvReader.readNext();
if (headers == null) {
throw new RuntimeException("no data found in input csv file");
}
}
@Override
public void execute(FunctionContext context) throws Exception {
String[] csvParameters = this.csvReader.readNext();
if (csvParameters == null) {
csvReader.close();
initializeCSVReader(context);
csvParameters = this.csvReader.readNext();
}
if (csvParameters != null) {
for (int headerI = 0; headerI < headers.length; headerI++) {
context.addParameter(headers[headerI], csvParameters[headerI]);
}
}
}