/// <summary> Just like {@link #Search(Weight, Filter, int, Sort)}, but you choose
/// whether or not the fields in the returned {@link FieldDoc} instances
/// should be set by specifying fillFields.<br/>
///
/// <p/>
/// NOTE: this does not compute scores by default. If you need scores, create
/// a {@link TopFieldCollector} instance by calling
/// {@link TopFieldCollector#create} and then pass that to
/// {@link #Search(Weight, Filter, Collector)}.
/// <p/>
/// </summary>
public virtual TopFieldDocs Search(Weight weight, Filter filter, int nDocs, Sort sort, bool fillFields)
{
nDocs = System.Math.Min(nDocs, reader.MaxDoc());
SortField[] fields = sort.fields;
bool legacy = false;
for (int i = 0; i < fields.Length; i++)
{
SortField field = fields[i];
System.String fieldname = field.GetField();
int type = field.GetType();
// Resolve AUTO into its true type
if (type == SortField.AUTO)
{
int autotype = SortField.DetectFieldType(reader, fieldname);
if (autotype == SortField.STRING)
{
fields[i] = new SortField(fieldname, field.GetLocale(), field.GetReverse());
}
else
{
fields[i] = new SortField(fieldname, autotype, field.GetReverse());
}
}
if (field.GetUseLegacySearch())
{
legacy = true;
}
}
if (legacy)
{
// Search the single top-level reader
TopDocCollector collector = new TopFieldDocCollector(reader, sort, nDocs);
HitCollectorWrapper hcw = new HitCollectorWrapper(collector);
hcw.SetNextReader(reader, 0);
if (filter == null)
{
Scorer scorer = weight.Scorer(reader, true, true);
if (scorer != null)
{
scorer.Score(hcw);
}
}
else
{
SearchWithFilter(reader, weight, filter, hcw);
}
return (TopFieldDocs) collector.TopDocs();
}
TopFieldCollector collector2 = TopFieldCollector.create(sort, nDocs, fillFields, fieldSortDoTrackScores, fieldSortDoMaxScore, !weight.ScoresDocsOutOfOrder());
Search(weight, filter, collector2);
return (TopFieldDocs) collector2.TopDocs();
}
// inherit javadoc
public override TopDocs Search(Weight weight, Filter filter, int nDocs)
{
if (nDocs <= 0)
{
throw new System.ArgumentException("nDocs must be > 0");
}
nDocs = System.Math.Min(nDocs, reader.MaxDoc());
TopScoreDocCollector collector = TopScoreDocCollector.create(nDocs, !weight.ScoresDocsOutOfOrder());
Search(weight, filter, collector);
return collector.TopDocs();
}