| // Lucene version compatibility level 4.8.1 |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Facet.Taxonomy |
| { |
| /* |
| * 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. |
| */ |
| |
| using BinaryDocValues = Lucene.Net.Index.BinaryDocValues; |
| using BytesRef = Lucene.Net.Util.BytesRef; |
| using DocIdSetIterator = Lucene.Net.Search.DocIdSetIterator; |
| using MatchingDocs = FacetsCollector.MatchingDocs; |
| |
| /// <summary> |
| /// Aggregates sum of <see cref="float"/> values previously indexed with |
| /// <see cref="SingleAssociationFacetField"/>, assuming the default |
| /// encoding. |
| /// <para/> |
| /// NOTE: This was TaxonomyFacetSumFloatAssociations in Lucene |
| /// |
| /// @lucene.experimental |
| /// </summary> |
| public class TaxonomyFacetSumSingleAssociations : SingleTaxonomyFacets |
| { |
| /// <summary> |
| /// Create <see cref="TaxonomyFacetSumSingleAssociations"/> against |
| /// the default index field. |
| /// </summary> |
| public TaxonomyFacetSumSingleAssociations(TaxonomyReader taxoReader, FacetsConfig config, FacetsCollector fc) |
| : this(FacetsConfig.DEFAULT_INDEX_FIELD_NAME, taxoReader, config, fc) |
| { |
| } |
| |
| /// <summary> |
| /// Create <see cref="TaxonomyFacetSumSingleAssociations"/> against |
| /// the specified index field. |
| /// </summary> |
| public TaxonomyFacetSumSingleAssociations(string indexFieldName, TaxonomyReader taxoReader, FacetsConfig config, FacetsCollector fc) |
| : base(indexFieldName, taxoReader, config) |
| { |
| SumValues(fc.GetMatchingDocs()); |
| } |
| |
| private void SumValues(IList<FacetsCollector.MatchingDocs> matchingDocs) |
| { |
| //System.out.println("count matchingDocs=" + matchingDocs + " facetsField=" + facetsFieldName); |
| foreach (FacetsCollector.MatchingDocs hits in matchingDocs) |
| { |
| BinaryDocValues dv = hits.Context.AtomicReader.GetBinaryDocValues(m_indexFieldName); |
| if (dv == null) // this reader does not have DocValues for the requested category list |
| { |
| continue; |
| } |
| |
| BytesRef scratch = new BytesRef(); |
| DocIdSetIterator docs = hits.Bits.GetIterator(); |
| |
| int doc; |
| while ((doc = docs.NextDoc()) != DocIdSetIterator.NO_MORE_DOCS) |
| { |
| //System.out.println(" doc=" + doc); |
| // TODO: use OrdinalsReader? we'd need to add a |
| // BytesRef getAssociation()? |
| dv.Get(doc, scratch); |
| byte[] bytes = scratch.Bytes; |
| int end = scratch.Offset + scratch.Length; |
| int offset = scratch.Offset; |
| while (offset < end) |
| { |
| int ord = ((bytes[offset] & 0xFF) << 24) | ((bytes[offset + 1] & 0xFF) << 16) | |
| ((bytes[offset + 2] & 0xFF) << 8) | (bytes[offset + 3] & 0xFF); |
| offset += 4; |
| int value = ((bytes[offset] & 0xFF) << 24) | ((bytes[offset + 1] & 0xFF) << 16) | |
| ((bytes[offset + 2] & 0xFF) << 8) | (bytes[offset + 3] & 0xFF); |
| offset += 4; |
| m_values[ord] += J2N.BitConversion.Int32BitsToSingle(value); |
| } |
| } |
| } |
| } |
| } |
| } |