//Lookup by group int value (Alternative Syntax)
private void LookupGroupsByIntAlt(Directory directory)
{
Filter groupEndDocs = new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("groupEnd", "x"))));
IndexReader indexReader = DirectoryReader.Open(directory);
IndexSearcher indexSearcher = new IndexSearcher(indexReader);
GroupingSearch groupingSearch = new GroupingSearch(groupEndDocs);
groupingSearch.SetGroupSort(new Sort());
groupingSearch.SetIncludeScores(true);
Query query = NumericRangeQuery.NewInt32Range("Repetition", 1, 2, true, false);
var groupsResult = groupingSearch.Search(indexSearcher, query, 0, 10); //search(indexSearcher, query, groupOffset, groupLimit);
indexReader.Dispose();
}
//Lookup by group string value (Alternative Syntax)
private void LookupGroupsByStringAlt(Directory directory)
{
Filter groupEndDocs = new CachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("groupEnd", "x"))));
IndexReader indexReader = DirectoryReader.Open(directory);
IndexSearcher indexSearcher = new IndexSearcher(indexReader);
GroupingSearch groupingSearch = new GroupingSearch(groupEndDocs);
groupingSearch.SetGroupSort(new Sort());
groupingSearch.SetIncludeScores(true);
TermQuery query = new TermQuery(new Term("Category", "Cat 1"));
var groupsResult = groupingSearch.Search(indexSearcher, query, 0, 10); //search(indexSearcher, query, groupOffset, groupLimit);
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
{
}
}
