[LUCENE-4626] lucene totalGroupCount always 0

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 4.0
• Component/s: modules/grouping
• Labels: group totalGroupCount

Environment

win7 + JDK6.0

• Lucene Fields: New
• Assignee: Unassigned
• Reporter: zyfan
• Created: 13/Dec/12 06:30
• Updated: 28/Aug/22 13:34
• Resolved: 13/Dec/12 11:08

Description

i want group in lucene ,i find group demo for lucene 4.0 API,
this is my code:
Analyzer analyzer=new WhitespaceAnalyzer(Version.LUCENE_40);

DirectoryReader indexReader=DirectoryReader.open(FSDirectory.open(new File(indexDir)));
IndexSearcher isearcher = new IndexSearcher(indexReader);

GroupingSearch groupingSearch = new GroupingSearch("CsCode");
groupingSearch.setGroupSort(Sort.INDEXORDER);
groupingSearch.setFillSortFields(true);

if (true)

{ // Sets cache in MB groupingSearch.setCachingInMB(100.0, true); }

if (true) {
groupingSearch.setAllGroups(true);

}

QueryParser parser = new QueryParser(Version.LUCENE_40, "OneBestText1", analyzer);
Query query = parser.parse("你好");
TopGroups<String> result = groupingSearch.search(isearcher, query, 0, 5000);

// Render groupsResult...
if (true)

{ int totalGroupCount = result.totalGroupCount; System.out.println(totalGroupCount); }

the totalGroupCount always 0 but result.groups.length is 590.
i donot know why ,please help