Question

在基点上,我发现了一幅大举的gra光。它储存基点的双线,每当面面值计算时改进性能。

        var genreQuery = new TermQuery(new Term("genre", genre));
        var genreQueryFilter = new QueryFilter(genreQuery);
        BitArray genreBitArray = genreQueryFilter.Bits(searcher.GetIndexReader());
        Console.WriteLine("There are " + GetCardinality(genreBitArray) + " document with the genre " + genre);

        // Next perform a regular search and get its BitArray result
        Query searchQuery = MultiFieldQueryParser.Parse(term, new[] {"title", "description"}, new[] {BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD}, new StandardAnalyzer());
        var searchQueryFilter = new QueryFilter(searchQuery);
        BitArray searchBitArray = searchQueryFilter.Bits(searcher.GetIndexReader());
        Console.WriteLine("There are " + GetCardinality(searchBitArray) + " document containing the term " + term);

唯一的问题是,我正在使用更新的卢塞内版本。 NET (2.9) and Filter. 比方陈旧。我们被告知使用DocIdSet(而不是BitArray)。

我无法发现如何做仲裁。 And(Array) with a docIdSet. 我看着反射器,发现“开放式”系统已经运作。我说,我不敢肯定开放式的Set是走路。

提前感谢!

Answer 1

创立。

            var productsDISI = new OpenBitSetDISI(productResults.Iterator(), 25000);
            var termQuery = new TermQuery(new Term("Spec" + expectedFacet.SpecificationId, expectedFacet.SpecificationOptionId.ToString()));
            var termQueryFilter = new QueryWrapperFilter(termQuery);
            var termIterator = termQueryFilter.GetDocIdSet(productReader).Iterator();
            productsDISI.InPlaceAnd(termIterator);
            var total = productsDISI.Cardinality();

速度也非常快。

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