public static final SQLRowValues getGraphToFetch(
Configuration conf, SQLTable table, List<SQLField> fieldsToFetch) {
if (fieldsToFetch == null) return null;
final SQLRowValues vals = new SQLRowValues(table);
for (final SQLField f : fieldsToFetch) {
vals.put(f.getName(), null);
}
// keep order field in graph (not only in graphToFetch) so that a debug column is created
for (final Path orderP : Collections.singletonList(new Path(table))) {
final SQLRowValues orderVals = vals.followPath(orderP);
if (orderVals != null && orderVals.getTable().isOrdered()) {
orderVals.put(orderVals.getTable().getOrderField().getName(), null);
}
}
getShowAs(conf).expand(vals);
return vals;
}
