gistfile1.txt

var fman = DI.Resolve<ShardManager>().Facets;

    var years = fman.GetGroupFacets("Dates").Where(x => x.Key.FieldName == "Year").ToList();
    var newsTypes = PickerUtil.DecodeValue(node.GetPropertyString("newsTypes"));

    var currentYear = Request["year"] ?? "year:";
    var currentNewsType = Request["newsType"] ?? "tags:";

    var facets = new List<Eksponent.Lucene.Facets.Facet>()
    {
        fman.Get(FacetKey.FromTermValue(currentYear)),
        fman.Get(FacetKey.FromTermValue(currentNewsType))
    }.Where(x => x != null).Select(x => x.Index).ToList();

    var filter = facets.Any() ? new FacetFilterRestriction.And(facets) : null;
    
    var news = LuceneNode.Query(new DescendantsQuery(StaticNodes.Site.NodeId, nodeTypeAliases: new[] {"NewsPage"})
    {
        Count = 200,
        FacetFilter = filter,
        Sort = new Sort(new SortField("ContentDate", SortField.DOUBLE, true))
    }).Select(x => x.Item).ToList();