| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.search.join; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.index.DocValues; |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.index.OrdinalMap; |
| import org.apache.lucene.index.SortedDocValues; |
| import org.apache.lucene.search.Collector; |
| import org.apache.lucene.search.LeafCollector; |
| import org.apache.lucene.search.Scorable; |
| import org.apache.lucene.util.LongBitSet; |
| import org.apache.lucene.util.LongValues; |
| |
| /** |
| * A collector that collects all ordinals from a specified field matching the query. |
| * |
| * @lucene.experimental |
| */ |
| final class GlobalOrdinalsCollector implements Collector { |
| |
| final String field; |
| final LongBitSet collectedOrds; |
| final OrdinalMap ordinalMap; |
| |
| GlobalOrdinalsCollector(String field, OrdinalMap ordinalMap, long valueCount) { |
| this.field = field; |
| this.ordinalMap = ordinalMap; |
| this.collectedOrds = new LongBitSet(valueCount); |
| } |
| |
| public LongBitSet getCollectorOrdinals() { |
| return collectedOrds; |
| } |
| |
| @Override |
| public org.apache.lucene.search.ScoreMode scoreMode() { |
| return org.apache.lucene.search.ScoreMode.COMPLETE_NO_SCORES; |
| } |
| |
| @Override |
| public LeafCollector getLeafCollector(LeafReaderContext context) throws IOException { |
| SortedDocValues docTermOrds = DocValues.getSorted(context.reader(), field); |
| if (ordinalMap != null) { |
| LongValues segmentOrdToGlobalOrdLookup = ordinalMap.getGlobalOrds(context.ord); |
| return new OrdinalMapCollector(docTermOrds, segmentOrdToGlobalOrdLookup); |
| } else { |
| return new SegmentOrdinalCollector(docTermOrds); |
| } |
| } |
| |
| final class OrdinalMapCollector implements LeafCollector { |
| |
| private final SortedDocValues docTermOrds; |
| private final LongValues segmentOrdToGlobalOrdLookup; |
| |
| OrdinalMapCollector(SortedDocValues docTermOrds, LongValues segmentOrdToGlobalOrdLookup) { |
| this.docTermOrds = docTermOrds; |
| this.segmentOrdToGlobalOrdLookup = segmentOrdToGlobalOrdLookup; |
| } |
| |
| @Override |
| public void collect(int doc) throws IOException { |
| if (docTermOrds.advanceExact(doc)) { |
| long segmentOrd = docTermOrds.ordValue(); |
| long globalOrd = segmentOrdToGlobalOrdLookup.get(segmentOrd); |
| collectedOrds.set(globalOrd); |
| } |
| } |
| |
| @Override |
| public void setScorer(Scorable scorer) throws IOException { |
| } |
| } |
| |
| final class SegmentOrdinalCollector implements LeafCollector { |
| |
| private final SortedDocValues docTermOrds; |
| |
| SegmentOrdinalCollector(SortedDocValues docTermOrds) { |
| this.docTermOrds = docTermOrds; |
| } |
| |
| @Override |
| public void collect(int doc) throws IOException { |
| if (docTermOrds.advanceExact(doc)) { |
| collectedOrds.set(docTermOrds.ordValue()); |
| } |
| } |
| |
| @Override |
| public void setScorer(Scorable scorer) throws IOException { |
| } |
| } |
| |
| } |