Getting all values for a specific dimension for SortedSetDocValues per document

[Harald Braumann]

Hi!

I'm looking for a solution for the following problem:
I would like to get all the values for a specific dimension for 
SortedSetDocValues per document. I've basically copied 
SortedSetDocValuesFacetCounts, but instead of just counting, I build a 
map from doc to values. The problem here is, that I have to iterate 
through all ords and map them to global ords to check if they belong to 
the desired dimension. And this is very inefficient. Is there a better 
way, to iterate through documents and get all the values for a specific 
dimension?

Here is a simplified code of what I'm doing now:

SortedSetDocValuesReaderState state;

LongValues segOrdMap = ordinalMap.getGlobalOrds(segOrd);
SortedSetDocValues it = DocValues.getSortedSet(reader, field);

OrdRange dimOrdRange = state.getOrdRange(dim);

for (int doc = it.nextDoc();...)
  for (long term = it.nextOrd(); ...)
    long globalTerm = segOrdMap.get(term) : term;
    if (globalTerm >= dimOrdRange.start &&
        globalTerm <= dimOrdRange end) {
      // add doc/globalTerm
    }
  }
}

Am I on the completely wrong path here?

Thanks in advance and regards
harry


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