@Override
protected void doSetNextReader(LeafReaderContext context) throws IOException {
FunctionValues values = groupSource.getValues(vsContext, context);
groupFiller = values.getValueFiller();
groupMval = groupFiller.getValue();
values = countSource.getValues(vsContext, context);
countFiller = values.getValueFiller();
countMval = countFiller.getValue();
}
@Override
public void collect(int doc) throws IOException {
groupFiller.fillValue(doc);
GroupCount groupCount = groupMap.get(groupMval);
if (groupCount != null) {
countFiller.fillValue(doc);
groupCount.uniqueValues.add(countMval.duplicate());
}
}