public static SearchResult MultiSearch(string term, List<FacetMatch> filters)
{
var result = new SearchResult();
if (_directory == null)
{
_directory = new RAMDirectory(FSDirectory.Open(@"c:\test\luceneindex"));
}
//var reader = IndexReader.Open(FSDirectory.Open(@"c:\test\luceneindex"), true);
var reader = IndexReader.Open(_directory, true);
var searcher = new FacetSearcher(reader);
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
var queryParser = new QueryParser(Version.LUCENE_30, "name", analyzer);
queryParser.AllowLeadingWildcard = true;
var query = queryParser.Parse("*" + term + "*");
query = CreateFacetedQuery(query, filters, "");
//var query = new TermQuery(new Term(term + "*"));
var facetFields = new List<FacetFieldInfo>();
var db = new Database();
facetFields.Add(new FacetFieldInfo()
{
FieldName = "category"
});
foreach (var specType in db.GetSpecTypes())
{
facetFields.Add(new FacetFieldInfo()
{
FieldName = specType,
Selections = filters.Where(f => f.FacetName == specType).Select(f => f.FacetValue).ToList()
});
}
var actual = searcher.SearchWithFacets(query, 200, facetFields);
if (actual.Hits.TotalHits > 0)
{
foreach (var hit in actual.Hits.ScoreDocs)
{
var doc = searcher.Doc(hit.Doc);
result.Products.Add(new Product()
{
Name = doc.GetField("name").StringValue,
Id = int.Parse(doc.GetField("id").StringValue)
});
}
foreach (var facet in actual.Facets)
{
result.Facets.Add(new FacetMatch()
{
FacetName = facet.FacetFieldName,
FacetValue = facet.Value,
HitCount = facet.Count
});
}
}
result.Facets = result.Facets.OrderBy(f => f.FacetName).ThenBy(f => f.FacetValue).ToList();
var groups = result.Facets.GroupBy(g => g.FacetName);
return result;
}
public static void RebuildIndex()
{
var db = new Database();
var data = db.GetProducts();
var cats = db.GetProductCategories();
var specs = db.GetProductSpecs();
var directory = FSDirectory.Open(@"c:\test\LuceneIndex");
var analyzer = new StandardAnalyzer(Version.LUCENE_30);
var indexWriter = new IndexWriter(directory, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED);
foreach (var p in data)
{
var doc = new Document();
doc.Add(new Field("id", p.Id.ToString(), Field.Store.YES, Field.Index.ANALYZED));
doc.Add(new Field("name", p.StoreName(), Field.Store.YES, Field.Index.ANALYZED));
foreach (var c in cats.Where(c => c.ProductId == p.Id))
{
doc.Add(new Field("category", c.CategoryId.ToString(), Field.Store.YES, Field.Index.ANALYZED));
}
foreach (var spec in specs.Where(s => s.ProductId == p.Id))
{
doc.Add(new Field(spec.SpecType, spec.Value, Field.Store.YES, Field.Index.ANALYZED));
}
indexWriter.AddDocument(doc);
}
indexWriter.Optimize();
indexWriter.Dispose();
}