Hi, I managed to retrive the groups using the *SortedSetDocValuesField* in *GroupingSearch* by initialising the groupsearch with *SortedSetFieldSource*
The problem is when a document has multiple values in the field "SortedSetDocValuesField" than not the grouping query does not return all the groups. Let me demonstrate it in my example // indexing, the first object has the category "one" and the second object has category "two" and "three" Document doc = new Document(); doc.add(new FacetField("Author", "Bob")); doc.add(new SortedSetDocValuesField("category", new BytesRef("one"))); indexWriter.addDocument(config.build(taxoWriter, doc)); doc = new Document(); doc.add(new FacetField("Author", "Lisa")); doc.add(new SortedSetDocValuesField("category", new BytesRef("two"))); doc.add(new SortedSetDocValuesField("category", new BytesRef("three"))); indexWriter.addDocument(config.build(taxoWriter, doc)); // initializing the grouping search ValueSource vs = new SortedSetFieldSource(groupField); groupingSearch = new GroupingSearch(vs, new HashMap<>()); // performing the group search TopGroups groups = groupingSearch.search(searcher, new MatchAllDocsQuery(), 0, 100); It returns 2 groups only and I would expect 3 groups ("one", "two" and "three") Is it a bug? Or am I using the API in a wrong way? -- Sent from: https://lucene.472066.n3.nabble.com/Lucene-Java-Users-f532864.html --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org