Example #1
0
		/// <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();
		}
Example #2
0
		// 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();
		}