IFederatedSearch.searchWithSession and no rank value

Question

If I do a search with multiple RIDs
searchWithSession(IQueryEntryList, IRidList, IResourceContext, ISortPropertyName, java.util.Set);
all returned IResults have a rank value of 0. If the IRidList contains only one RID, the Results have a rank value > 0.
Can't TREX rank the results of a multiple Collection search or is this a bug?
Cheers,
Christof
Message was edited by: Christof Holzhäuser

Answer 1

Sorry, forgot the version: NW04SneakPrevJavaSP11 and TREX 6.1.13.00
With the following code I get a number of results. Every result hat a rank value of 0%:
IIndexService indexService = getIndexService();
SearchQueryBuilder sqb = new SearchQueryBuilder();
sqb.setSearchTerm("searchString");
IQueryEntryList qel = sqb.buildSearchQueryEntries();
IRidList ridList = new RidList();
ridList.add(RID.getRID("/repository2/path1"));
ridList.add(RID.getRID("/repository2/path1"));
IFederatedSearch search = (IFederatedSearch) indexService.getObjectInstance(IWcmIndexConst.FEDERATED_SEARCH_INSTANCE);
ISearchSession session = getFederatedSearch().searchWithSession(qel, ridList, getResourceContext(), null, null);
ISearchResultList results = session.getSearchResults(1, session.getTotalNumberResultKeys());
for (ISearchResultListIterator iter = results.listIterator(); iter.hasNext();) {
   ISearchResult result = iter.next();
   float rankValue = result.getRankValue(); //this is always 0.0 if ridList has multiple RIDs
As said before, if the ridList contains only one RID, the results rank value is greater 0.0!
If I do the same search in the advanced search dialog, the results have a rank value greater 0. So I think search iview uses a different search. What am I doing wrong?
Cheers,
Christof