//Two-pass grouping search with cacheing (kinda working)
private void TwoPassGroupingSearch(Directory directory)
{
var indexReader = DirectoryReader.Open(directory);
var indexSearcher = new IndexSearcher(indexReader);
//GroupingSearch groupingSearch = new GroupingSearch("Repetition");
GroupingSearch groupingSearch = new GroupingSearch("Category");
groupingSearch.SetAllGroups(true);
groupingSearch.SetGroupDocsLimit(10);
groupingSearch.SetCachingInMB(40.0, true);
MatchAllDocsQuery all_query = new MatchAllDocsQuery();
NumericRangeQuery <int> numeric_query = NumericRangeQuery.NewInt32Range("Repetition", 1, 2, true, false);
TermQuery term_query = new TermQuery(new Term("Category", "Cat 1"));
//Use different queries above to test
var topGroups = groupingSearch.Search(indexSearcher, term_query, 0, 10);
Console.WriteLine("Total group count: " + topGroups.TotalGroupCount);
Console.WriteLine("Total group hit count: " + topGroups.TotalGroupedHitCount);
foreach (var groupDocs in topGroups.Groups)
{
Console.WriteLine("Group: " + ((BytesRef)groupDocs.GroupValue).Utf8ToString());
foreach (var scoreDoc in groupDocs.ScoreDocs)
{
var doc = indexSearcher.Doc(scoreDoc.Doc);
Console.WriteLine("Category: " + doc.GetField("Category").GetStringValue() + ", BookId: " + doc.GetField("BookId").GetStringValue() + ", Rep: " + doc.GetField("Repetition").GetInt32Value());
}
}
indexReader.Dispose();
}
private IEnumerable <KeyValuePair <string, int> > _GroupBy(int skip, int pageSize, string fieldName)
{
GroupingSearch groupingSearch = new GroupingSearch(fieldName);
groupingSearch.SetGroupSort(Sort.RELEVANCE);
groupingSearch.SetFillSortFields(false);
groupingSearch.SetCachingInMB(40.0, true);
groupingSearch.SetAllGroups(true);
// Render groupsResult...
try
{
var reader = DirectoryReader.Open(_directory);
var searcher = new Lucene.Net.Search.IndexSearcher(reader);
Sort groupSort = Sort.RELEVANCE;
int groupOffset = 0;
int groupLimit = 10000000;
string rawQuery = _queryProvider.GetBooleanQuery().ToString();
if (!rawQuery.Contains("isdeleted"))
{
rawQuery += "+isdeleted:0";
}
var queryParser = new QueryParser(LuceneVersion.LUCENE_48, "isdeleted", analyzer);
queryParser.AllowLeadingWildcard = _queryProvider.GetContainsWildCard();
var query = queryParser.Parse(rawQuery);
ITopGroups <object> result = groupingSearch.Search(searcher, query, groupOffset, groupLimit);
if (result.Groups == null || result.Groups.Count() <= 0)
{
return(new List <KeyValuePair <string, int> >());
}
var d = result.Groups.OrderByDescending(p => p.TotalHits).ToList();
if (d.FirstOrDefault().GroupValue == null)
{
d.RemoveAt(0);
}
_groupCount = d.Count;
if (pageSize > d.Count)
{
pageSize = d.Count;
}
d = d.Skip(skip).Take(pageSize).ToList();
if (d.Count > 0)
{
var rs = d.Select(p => new KeyValuePair <string, int>(((BytesRef)p.GroupValue)?.Utf8ToString(), p.TotalHits)).ToList();
return(rs);
}
else
{
return(new List <KeyValuePair <string, int> >());
}
}
catch
{
throw;
}
finally
{
}
}
public virtual void TestSetAllGroups()
{
Directory dir = NewDirectory();
RandomIndexWriter w = new RandomIndexWriter(
Random(),
dir,
NewIndexWriterConfig(TEST_VERSION_CURRENT,
new MockAnalyzer(Random())).SetMergePolicy(NewLogMergePolicy()));
Document doc = new Document();
doc.Add(NewField("group", "foo", StringField.TYPE_NOT_STORED));
w.AddDocument(doc);
IndexSearcher indexSearcher = NewSearcher(w.Reader);
w.Dispose();
GroupingSearch gs = new GroupingSearch("group");
gs.SetAllGroups(true);
ITopGroups<object> groups = gs.Search(indexSearcher, null, new TermQuery(new Index.Term("group", "foo")), 0, 10);
assertEquals(1, groups.TotalHitCount);
//assertEquals(1, groups.totalGroupCount.intValue());
assertEquals(1, groups.TotalGroupedHitCount);
assertEquals(1, gs.GetAllMatchingGroups().Count);
indexSearcher.IndexReader.Dispose();
dir.Dispose();
}
