Lucene.Net.Search.TestFilteredQuery.TChainedFilters C# (CSharp) Method

        private void TChainedFilters(bool useRandomAccess)
        {
            Query query = new FilteredQuery(new FilteredQuery(new MatchAllDocsQuery(), new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("field", "three")))), RandomFilterStrategy(Random(), useRandomAccess)), new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("field", "four")))), RandomFilterStrategy(Random(), useRandomAccess));
            ScoreDoc[] hits = Searcher.Search(query, 10).ScoreDocs;
            Assert.AreEqual(2, hits.Length);
            QueryUtils.Check(Random(), query, Searcher, Similarity);

            // one more:
            query = new FilteredQuery(query, new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("field", "five")))), RandomFilterStrategy(Random(), useRandomAccess));
            hits = Searcher.Search(query, 10).ScoreDocs;
            Assert.AreEqual(1, hits.Length);
            QueryUtils.Check(Random(), query, Searcher, Similarity);
        }