presto-main/src/main/java/io/prestosql/operator/index/DynamicTupleFilterFactory.java/DynamicTupleFilterFactory/createPageProcessor
class DynamicTupleFilterFactory:    @VisibleForTesting
    public Supplier<PageProcessor> createPageProcessor(Page filterTuple, OptionalInt initialBatchSize)
    {
        TuplePageFilter filter = new TuplePageFilter(filterTuple, filterTypes, outputFilterChannels);
        return () -> new PageProcessor(
                Optional.of(filter),
                outputProjections.stream()
                        .map(Supplier::get)
                        .collect(toImmutableList()), initialBatchSize);
    }