@Override
protected void pre() {
for (DataReader<O> reader : tasks) {
reader.open();
reader.pre();
}
}
@Override
protected void post() {
for (DataReader<O> reader : tasks) {
reader.post();
reader.close();
}
}
@Override
protected List<O> execute(DataReader<O> reader, List<Object> ignored) {
List<O> read = reader.read(batchSize);
return read;
}