private IEnumerable <DocumentScore> DoScore(IList <DocumentPosting> postings, string field)
{
if (postings.Any())
{
var scorer = _scorer.CreateScorer(_ix.DocumentCount.DocCount[field], postings.Count);
foreach (var posting in postings)
{
var score = scorer.Score(posting);
yield return(score);
}
}
}
private IEnumerable <DocumentScore> DoScore(IList <DocumentPosting> postings)
{
var docHashesFileName = Path.Combine(_directory, string.Format("{0}.{1}", _ix.VersionId, "pk"));
using (var docHashReader = new DocHashReader(docHashesFileName))
{
if (_scorerFactory == null)
{
foreach (var posting in postings)
{
var docHash = docHashReader.Read(posting.DocumentId);
if (!docHash.IsObsolete)
{
yield return(new DocumentScore(posting.DocumentId, docHash.Hash, 0, _ix));
}
}
}
else
{
if (postings.Any())
{
var docsWithTerm = postings.Count;
var scorer = _scorerFactory.CreateScorer(_documentCount, docsWithTerm);
foreach (var posting in postings)
{
var docHash = docHashReader.Read(posting.DocumentId);
if (!docHash.IsObsolete)
{
var score = scorer.Score(posting);
yield return(new DocumentScore(posting.DocumentId, docHash.Hash, score, _ix));
}
}
}
}
}
}
private IEnumerable <DocumentScore> GetScoredResult(Term term, IScoringScheme scoringScheme)
{
var trie = GetTrie(term.Field);
if (_ix == null)
{
yield break;
}
var totalNumOfDocs = _ix.DocCount[term.Field];
if (trie.ContainsToken(term.Value))
{
var termData = GetPostingsFile(term.Field, term.Value);
var scorer = scoringScheme.CreateScorer(totalNumOfDocs, termData.Postings.Count);
foreach (var posting in termData.Postings)
{
var hit = new DocumentScore(posting.Key, posting.Value, totalNumOfDocs);
scorer.Score(hit);
yield return(hit);
}
}
}
private IEnumerable <DocumentScore> DoScore(IList <DocumentPosting> postings)
{
if (_scorerFactory == null)
{
foreach (var posting in postings.OrderBy(p => p.DocumentId))
{
var docHash = _docHashReader.Read(posting.DocumentId);
if (!docHash.IsObsolete)
{
yield return(new DocumentScore(posting.DocumentId, docHash.Hash, 0, _ix));
}
}
}
else
{
if (postings.Any())
{
var docsWithTerm = postings.Count;
var scorer = _scorerFactory.CreateScorer(_documentCount, docsWithTerm);
foreach (var posting in postings.OrderBy(p => p.DocumentId))
{
var docHash = _docHashReader.Read(posting.DocumentId);
if (!docHash.IsObsolete)
{
var score = scorer.Score(posting);
yield return(new DocumentScore(posting.DocumentId, docHash.Hash, score, _ix));
}
}
}
}
}