Esempio n. 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 = 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());
        }
Esempio n. 2
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            public MultiComparatorsFieldValueHitQueue(SortField[] fields, int size) : base(fields)
            {
                int numComparators = comparators.Length;

                for (int i = 0; i < numComparators; ++i)
                {
                    SortField field = fields[i];

                    // AUTO is resolved before we are called
                    System.Diagnostics.Debug.Assert(field.GetType() != SortField.AUTO);

                    reverseMul[i]  = field.reverse?-1:1;
                    comparators[i] = field.GetComparator(size, i);
                }

                Initialize(size);
            }
Esempio n. 3
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            public OneComparatorFieldValueHitQueue(SortField[] fields, int size) : base(fields)
            {
                if (fields.Length == 0)
                {
                    throw new System.ArgumentException("Sort must contain at least one field");
                }

                SortField field = fields[0];

                // AUTO is resolved before we are called
                System.Diagnostics.Debug.Assert(field.GetType() != SortField.AUTO);
                comparator    = field.GetComparator(size, 0);
                oneReverseMul = field.reverse?-1:1;

                comparators[0] = comparator;
                reverseMul[0]  = oneReverseMul;

                Initialize(size);
            }