| /* |
| * 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.facet.range; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import org.apache.lucene.document.FloatDocValuesField; |
| import org.apache.lucene.facet.Facets; |
| import org.apache.lucene.facet.FacetsCollector; |
| import org.apache.lucene.facet.FacetsCollector.MatchingDocs; |
| import org.apache.lucene.index.IndexReaderContext; |
| import org.apache.lucene.index.ReaderUtil; |
| import org.apache.lucene.search.DocIdSetIterator; |
| import org.apache.lucene.search.DoubleValues; |
| import org.apache.lucene.search.DoubleValuesSource; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.search.ScoreMode; |
| import org.apache.lucene.search.Scorer; |
| import org.apache.lucene.search.Weight; |
| import org.apache.lucene.util.NumericUtils; |
| |
| /** |
| * {@link Facets} implementation that computes counts for dynamic double ranges from a provided |
| * {@link DoubleValuesSource}. Use this for dimensions that change in real-time (e.g. a relative |
| * time based dimension like "Past day", "Past 2 days", etc.) or that change for each request (e.g. |
| * distance from the user's location, "< 1 km", "< 2 km", etc.). |
| * |
| * <p>If you have indexed your field using {@link FloatDocValuesField}, then you should use a |
| * DoubleValuesSource generated from {@link DoubleValuesSource#fromFloatField(String)}. |
| * |
| * @lucene.experimental |
| */ |
| public class DoubleRangeFacetCounts extends RangeFacetCounts { |
| |
| /** |
| * Create {@code RangeFacetCounts}, using {@link DoubleValues} from the specified field. |
| * |
| * <p>N.B This assumes that the field was indexed with {@link |
| * org.apache.lucene.document.DoubleDocValuesField}. For float-valued fields, use {@link |
| * #DoubleRangeFacetCounts(String, DoubleValuesSource, FacetsCollector, DoubleRange...)} |
| */ |
| public DoubleRangeFacetCounts(String field, FacetsCollector hits, DoubleRange... ranges) |
| throws IOException { |
| this(field, DoubleValuesSource.fromDoubleField(field), hits, ranges); |
| } |
| |
| /** Create {@code RangeFacetCounts} using the provided {@link DoubleValuesSource} */ |
| public DoubleRangeFacetCounts( |
| String field, DoubleValuesSource valueSource, FacetsCollector hits, DoubleRange... ranges) |
| throws IOException { |
| this(field, valueSource, hits, null, ranges); |
| } |
| |
| /** |
| * Create {@code RangeFacetCounts}, using the provided {@link DoubleValuesSource}, and using the |
| * provided Query as a fastmatch: only documents matching the query are checked for the matching |
| * ranges. |
| */ |
| public DoubleRangeFacetCounts( |
| String field, |
| DoubleValuesSource valueSource, |
| FacetsCollector hits, |
| Query fastMatchQuery, |
| DoubleRange... ranges) |
| throws IOException { |
| super(field, ranges, fastMatchQuery); |
| count(valueSource, hits.getMatchingDocs()); |
| } |
| |
| private void count(DoubleValuesSource valueSource, List<MatchingDocs> matchingDocs) |
| throws IOException { |
| |
| DoubleRange[] ranges = (DoubleRange[]) this.ranges; |
| |
| LongRange[] longRanges = new LongRange[ranges.length]; |
| for (int i = 0; i < ranges.length; i++) { |
| DoubleRange range = ranges[i]; |
| longRanges[i] = |
| new LongRange( |
| range.label, |
| NumericUtils.doubleToSortableLong(range.min), |
| true, |
| NumericUtils.doubleToSortableLong(range.max), |
| true); |
| } |
| |
| LongRangeCounter counter = new LongRangeCounter(longRanges); |
| |
| int missingCount = 0; |
| for (MatchingDocs hits : matchingDocs) { |
| DoubleValues fv = valueSource.getValues(hits.context, null); |
| |
| totCount += hits.totalHits; |
| final DocIdSetIterator fastMatchDocs; |
| if (fastMatchQuery != null) { |
| final IndexReaderContext topLevelContext = ReaderUtil.getTopLevelContext(hits.context); |
| final IndexSearcher searcher = new IndexSearcher(topLevelContext); |
| searcher.setQueryCache(null); |
| final Weight fastMatchWeight = |
| searcher.createWeight( |
| searcher.rewrite(fastMatchQuery), ScoreMode.COMPLETE_NO_SCORES, 1); |
| Scorer s = fastMatchWeight.scorer(hits.context); |
| if (s == null) { |
| continue; |
| } |
| fastMatchDocs = s.iterator(); |
| } else { |
| fastMatchDocs = null; |
| } |
| |
| DocIdSetIterator docs = hits.bits.iterator(); |
| |
| for (int doc = docs.nextDoc(); doc != DocIdSetIterator.NO_MORE_DOCS; ) { |
| if (fastMatchDocs != null) { |
| int fastMatchDoc = fastMatchDocs.docID(); |
| if (fastMatchDoc < doc) { |
| fastMatchDoc = fastMatchDocs.advance(doc); |
| } |
| |
| if (doc != fastMatchDoc) { |
| doc = docs.advance(fastMatchDoc); |
| continue; |
| } |
| } |
| // Skip missing docs: |
| if (fv.advanceExact(doc)) { |
| counter.add(NumericUtils.doubleToSortableLong(fv.doubleValue())); |
| } else { |
| missingCount++; |
| } |
| |
| doc = docs.nextDoc(); |
| } |
| } |
| |
| missingCount += counter.fillCounts(counts); |
| totCount -= missingCount; |
| } |
| } |