Lucene.NET和Facete搜索解决方案

Question

嘿，刚开始使用Lucene.NET，有人想知道是否有人对Lucene.NET进行了多面搜索。

我知道以下链接http://www.devatwork.nl/articles/lucenenet/faceted-search-and-drill-down-lucenenet/

看起来不错，但它所做的只是告诉我多面搜索的结果数量，但实际上却不告诉我如何检索这些结果的索引和详细信息。 即与在Lucene.NET中进行常规搜索一样。

即从该链接，他有以下片段

    private static void FacetedSearch(string indexPath, string genre, string term){
var searcher = new IndexSearcher(indexPath);
// first get the BitArray result from the genre query
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);

// Now do the faceted search magic, combine the two bit arrays using a binary AND operation
BitArray combinedResults = searchBitArray.And(genreBitArray);
Console.WriteLine("There are " + GetCardinality(combinedResults) + " document containing the term " + term + " and which are in the genre " + genre);
}

哪个会告诉我，即搜索词“ Dublin”有2条记录，而类别为“ Financial”，这是完美的记录，但本文似乎跳过了该部分，它说了如何检索这些结果的索引并显示在屏幕。

他的确在下面的链接中对此进行了说明，以进行常规搜索，但不进行面搜索。

即普通搜索

    private static void Search(string indexPath, string term)
{
// create searcher
var searcher = new IndexSearcher(indexPath);

// create a query which searches through the title and description, the term can be in the title or the description
Query searchQuery = MultiFieldQueryParser.Parse(term, new[] {"title", "description"}, new[] {BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD}, new StandardAnalyzer());

// perform the search
Hits hits = searcher.Search(searchQuery);

// loop through all the hits and show their title
for (int hitIndex = 0; hitIndex < hits.Length(); hitIndex++)
{
// get the corresponding document
Document hitDocument = hits.Doc(hitIndex);

// write its title to the console
Console.WriteLine(hitDocument.GetField("title").StringValue());
}
}

http://www.devatwork.nl/articles/lucenenet/search-basics-lucenenet/

任何帮助将不胜感激

编辑：

还是应该执行搜索查询，然后对结果进行过滤？

Answer 1

BitArray表示匹配。 每个1都有一个索引，等于文档ID

因此1001001表示索引中位置为0、3和6的文档与您的搜索匹配。 您只需要从Lucene索引中检索它们即可。

var searcher = new IndexSearcher(indexPath);

// get document at position 0
var doc = searcher.Doc( 0 );