Lucene.Net.Search.BooleanFilter.GetDocIdSet C# (CSharp) Метод

        public override DocIdSet GetDocIdSet(IndexReader reader)
        {
            OpenBitSetDISI res = null;

            if (shouldFilters != null)
            {
                for (int i = 0; i < shouldFilters.Count; i++)
                {
                    if (res == null)
                    {
                        res = new OpenBitSetDISI(GetDISI(shouldFilters, i, reader), reader.MaxDoc);
                    }
                    else
                    {
                        DocIdSet dis = shouldFilters[i].GetDocIdSet(reader);
                        if (dis is OpenBitSet)
                        {
                            // optimized case for OpenBitSets
                            res.Or((OpenBitSet)dis);
                        }
                        else
                        {
                            res.InPlaceOr(GetDISI(shouldFilters, i, reader));
                        }
                    }
                }
            }

            if (notFilters != null)
            {
                for (int i = 0; i < notFilters.Count; i++)
                {
                    if (res == null)
                    {
                        res = new OpenBitSetDISI(GetDISI(notFilters, i, reader), reader.MaxDoc);
                        res.Flip(0, reader.MaxDoc); // NOTE: may set bits on deleted docs
                    }
                    else
                    {
                        DocIdSet dis = notFilters[i].GetDocIdSet(reader);
                        if (dis is OpenBitSet)
                        {
                            // optimized case for OpenBitSets
                            res.AndNot((OpenBitSet)dis);
                        }
                        else
                        {
                            res.InPlaceNot(GetDISI(notFilters, i, reader));
                        }
                    }
                }
            }

            if (mustFilters != null)
            {
                for (int i = 0; i < mustFilters.Count; i++)
                {
                    if (res == null)
                    {
                        res = new OpenBitSetDISI(GetDISI(mustFilters, i, reader), reader.MaxDoc);
                    }
                    else
                    {
                        DocIdSet dis = mustFilters[i].GetDocIdSet(reader);
                        if (dis is OpenBitSet)
                        {
                            // optimized case for OpenBitSets
                            res.And((OpenBitSet)dis);
                        }
                        else
                        {
                            res.InPlaceAnd(GetDISI(mustFilters, i, reader));
                        }
                    }
                }
            }

            if (res != null)
                return FinalResult(res, reader.MaxDoc);

            return DocIdSet.EMPTY_DOCIDSET;
        }

        private FacetGroup CalculateResultCount(IndexReader reader, DocIdSet baseDocIdSet, ISearchFilter filter, ISearchCriteria criteria)
        {
            FacetGroup result = null;

            var values = filter.GetValues();
            if (values != null)
            {
                BooleanFilter ffilter = null;
                foreach (var f in criteria.CurrentFilters)
                {
                    if (!f.Key.Equals(filter.Key))
                    {
                        if (ffilter == null)
                            ffilter = new BooleanFilter();

                        var q = LuceneQueryHelper.CreateQuery(criteria, f, Occur.SHOULD);
                        ffilter.Add(new FilterClause(q, Occur.MUST));
                    }
                }

                var groupLabels = filter.GetLabels();
                var facetGroup = new FacetGroup(filter.Key, groupLabels);

                foreach (var group in values.GroupBy(v => v.Id))
                {
                    var value = group.FirstOrDefault();
                    var valueFilter = LuceneQueryHelper.CreateQueryForValue(Results.SearchCriteria, filter, value);

                    if (valueFilter != null)
                    {
                        var queryFilter = new BooleanFilter();
                        queryFilter.Add(new FilterClause(valueFilter, Occur.MUST));
                        if (ffilter != null)
                            queryFilter.Add(new FilterClause(ffilter, Occur.MUST));

                        var filterArray = queryFilter.GetDocIdSet(reader);
                        var newCount = (int)CalculateFacetCount(baseDocIdSet, filterArray);

                        if (newCount > 0)
                        {
                            var valueLabels = group.GetValueLabels();
                            var newFacet = new Facet(facetGroup, group.Key, newCount, valueLabels);
                            facetGroup.Facets.Add(newFacet);
                        }
                    }
                }

                if (facetGroup.Facets.Any())
                {
                    result = facetGroup;
                }
            }

            return result;
        }