| // Lucene version compatibility level 4.8.1 |
| using J2N.Numerics; |
| using Lucene.Net.Index; |
| using Lucene.Net.Queries.Function.DocValues; |
| using System; |
| using System.Collections; |
| using System.Globalization; |
| |
| namespace Lucene.Net.Queries.Function.ValueSources |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Function that returns a constant double value for every document. |
| /// </summary> |
| public class DoubleConstValueSource : ConstNumberSource |
| { |
| private readonly double constant; |
| private readonly float fv; |
| private readonly long lv; |
| |
| public DoubleConstValueSource(double constant) |
| { |
| this.constant = constant; |
| this.fv = (float)constant; |
| this.lv = (long)constant; |
| } |
| |
| public override string GetDescription() |
| { |
| return "const(" + constant + ")"; |
| } |
| |
| public override FunctionValues GetValues(IDictionary context, AtomicReaderContext readerContext) |
| { |
| return new DoubleDocValuesAnonymousClass(this, this); |
| } |
| |
| private class DoubleDocValuesAnonymousClass : DoubleDocValues |
| { |
| private readonly DoubleConstValueSource outerInstance; |
| |
| public DoubleDocValuesAnonymousClass(DoubleConstValueSource outerInstance, DoubleConstValueSource @this) |
| : base(@this) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| /// <summary> |
| /// NOTE: This was floatVal() in Lucene |
| /// </summary> |
| public override float SingleVal(int doc) |
| { |
| return outerInstance.fv; |
| } |
| |
| /// <summary> |
| /// NOTE: This was intVal() in Lucene |
| /// </summary> |
| public override int Int32Val(int doc) |
| { |
| return (int)outerInstance.lv; |
| } |
| |
| /// <summary> |
| /// NOTE: This was longVal() in Lucene |
| /// </summary> |
| public override long Int64Val(int doc) |
| { |
| return outerInstance.lv; |
| } |
| |
| public override double DoubleVal(int doc) |
| { |
| return outerInstance.constant; |
| } |
| |
| public override string StrVal(int doc) |
| { |
| return outerInstance.constant.ToString("R", CultureInfo.InvariantCulture); |
| } |
| |
| public override object ObjectVal(int doc) |
| { |
| return outerInstance.constant; |
| } |
| |
| public override string ToString(int doc) |
| { |
| return outerInstance.GetDescription(); |
| } |
| } |
| |
| public override int GetHashCode() |
| { |
| long bits = J2N.BitConversion.DoubleToRawInt64Bits(constant); |
| return (int)(bits ^ (bits.TripleShift(32))); |
| } |
| |
| public override bool Equals(object o) |
| { |
| if (!(o is DoubleConstValueSource other)) |
| { |
| return false; |
| } |
| return this.constant == other.constant; |
| } |
| |
| /// <summary> |
| /// NOTE: This was getInt() in Lucene |
| /// </summary> |
| public override int Int32 => (int)lv; |
| |
| /// <summary> |
| /// NOTE: This was getLong() in Lucene |
| /// </summary> |
| public override long Int64 => lv; |
| |
| /// <summary> |
| /// NOTE: This was getFloat() in Lucene |
| /// </summary> |
| public override float Single => fv; |
| |
| public override double Double => constant; |
| |
| // LUCENENET NOTE: getNumber() not supported |
| |
| public override bool Bool => constant != 0; |
| } |
| } |