TermFreqVector lucene .net - lucene

Question

I can get docs by category like this:
IndexSearcher searcher = new IndexSearcher(dir);
Term t = new Term("category", "Feline");
Query query = new TermQuery(t);
Hits hits = searcher.Search(query);
for (int c = 0; c < hits.Length(); c++)
{
Document d = hits.Doc(c);
Console.WriteLine(c + " " + d.GetField("category").StringValue());
}
Now I would like to obtain the TermFreqVector for the docs in hits. I would usually do this like so:
for (int c = 0; c < searcher.MaxDoc(); c++)
{
TermFreqVector TermFreqVector = IndexReader.GetTermFreqVector(c, "content");
String[] terms = TermFreqVector.GetTerms();//get the terms
int[] freqs = TermFreqVector.GetTermFrequencies();//
}
However, I am not sure how to do it in my scenario (i.e. just get them for the docs in hits). The docs also have a db pk.
Thanks.
Christian

Answer 1

The first parameter to IndexReader.GetTermFreqVector ("c" in your example) is the document number. hits.id(c) will return the ID of the cth result. So you'd do something like:
int Id = hits.id(c);
TermFreqVector TermFreqVector = IndexReader.GetTermFreqVector(Id, "content");
// etc.
(As a side note: the Hits class is deprecated; you probably want to use something like HitCollector or a different search overload instead.)