func (ts *TFIDFSimilarity) simScorer(stats SimWeight, ctx index.AtomicReaderContext) (ss SimScorer, err error) {
idfstats := stats.(*idfStats)
ndv, err := ctx.Reader().(index.AtomicReader).NormValues(idfstats.field)
if err != nil {
return nil, err
}
return newTFIDSimScorer(ts, idfstats, ndv), nil
}
func (tw TermWeight) termsEnum(ctx index.AtomicReaderContext) (te index.TermsEnum, err error) {
state := tw.termStates.State(ctx.Ord)
if state == nil { // term is not present in that reader
// assert termNotInReader(ctx.Reader(), tw.Term)
// : "no termstate found but term exists in reader term=" + term;
return index.EMPTY_TERMS_ENUM, nil
}
te = ctx.Reader().(index.AtomicReader).Terms(tw.term.Field).Iterator(index.EMPTY_TERMS_ENUM)
err = te.SeekExactFromLast(tw.term.Bytes, *state)
return
}