| // Lucene version compatibility level 4.8.1 |
| using Lucene.Net.Support; |
| using System.Globalization; |
| |
| 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 BytesRef = Lucene.Net.Util.BytesRef; |
| using Document = Lucene.Net.Documents.Document; |
| |
| /// <summary> |
| /// Add an instance of this to your <see cref="Document"/> to add |
| /// a facet label associated with a <see cref="float"/>. Use <see cref="TaxonomyFacetSumSingleAssociations"/> |
| /// to aggregate <see cref="float"/> values per facet label at search time. |
| /// <para/> |
| /// NOTE: This was FloatAssociationFacetField in Lucene |
| /// <para/> |
| /// @lucene.experimental |
| /// </summary> |
| public class SingleAssociationFacetField : AssociationFacetField |
| { |
| /// <summary> |
| /// Creates this from <paramref name="dim"/> and <paramref name="path"/> and a |
| /// <see cref="float"/> association |
| /// </summary> |
| public SingleAssociationFacetField(float assoc, string dim, params string[] path) |
| : base(SingleToBytesRef(assoc), dim, path) |
| { |
| } |
| |
| /// <summary> |
| /// Encodes a <see cref="float"/> as a 4-byte <see cref="BytesRef"/>. |
| /// <para/> |
| /// NOTE: This was floatToBytesRef() in Lucene |
| /// </summary> |
| public static BytesRef SingleToBytesRef(float v) |
| { |
| return Int32AssociationFacetField.Int32ToBytesRef(J2N.BitConversion.SingleToInt32Bits(v)); |
| } |
| |
| /// <summary> |
| /// Decodes a previously encoded <see cref="float"/>. |
| /// <para/> |
| /// NOTE: This was bytesRefToFloat() in Lucene |
| /// </summary> |
| public static float BytesRefToSingle(BytesRef b) |
| { |
| return J2N.BitConversion.Int32BitsToSingle(Int32AssociationFacetField.BytesRefToInt32(b)); |
| } |
| |
| public override string ToString() |
| { |
| return "SingleAssociationFacetField(dim=" + Dim + " path=" + Arrays.ToString(Path) + |
| " value=" + BytesRefToSingle(Assoc).ToString("0.0#####", CultureInfo.InvariantCulture) + ")"; |
| } |
| } |
| } |