| using Lucene.Net.Index; |
| using Lucene.Net.Queries.Function.DocValues; |
| using System.Collections; |
| |
| 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> |
| /// <see cref="ConstValueSource"/> returns a constant for all documents |
| /// </summary> |
| public class ConstValueSource : ConstNumberSource |
| { |
| private readonly float constant; |
| private readonly double dv; |
| |
| public ConstValueSource(float constant) |
| { |
| this.constant = constant; |
| this.dv = constant; |
| } |
| |
| public override string GetDescription() |
| { |
| return "const(" + constant + ")"; |
| } |
| |
| public override FunctionValues GetValues(IDictionary context, AtomicReaderContext readerContext) |
| { |
| return new SingleDocValuesAnonymousInnerClassHelper(this, this); |
| } |
| |
| private class SingleDocValuesAnonymousInnerClassHelper : SingleDocValues |
| { |
| private readonly ConstValueSource outerInstance; |
| |
| public SingleDocValuesAnonymousInnerClassHelper(ConstValueSource outerInstance, ConstValueSource @this) |
| : base(@this) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| /// <summary> |
| /// NOTE: This was floatVal() in Lucene |
| /// </summary> |
| public override float SingleVal(int doc) |
| { |
| return outerInstance.constant; |
| } |
| |
| /// <summary> |
| /// NOTE: This was intVal() in Lucene |
| /// </summary> |
| public override int Int32Val(int doc) |
| { |
| return (int)outerInstance.constant; |
| } |
| |
| /// <summary> |
| /// NOTE: This was longVal() in Lucene |
| /// </summary> |
| public override long Int64Val(int doc) |
| { |
| return (long)outerInstance.constant; |
| } |
| public override double DoubleVal(int doc) |
| { |
| return outerInstance.dv; |
| } |
| public override string ToString(int doc) |
| { |
| return outerInstance.GetDescription(); |
| } |
| public override object ObjectVal(int doc) |
| { |
| return outerInstance.constant; |
| } |
| public override bool BoolVal(int doc) |
| { |
| return outerInstance.constant != 0.0f; |
| } |
| } |
| |
| public override int GetHashCode() |
| { |
| return J2N.BitConversion.SingleToInt32Bits(constant) * 31; |
| } |
| |
| public override bool Equals(object o) |
| { |
| if (!(o is ConstValueSource other)) |
| { |
| return false; |
| } |
| return this.constant == other.constant; |
| } |
| |
| /// <summary> |
| /// NOTE: This was getInt() in Lucene |
| /// </summary> |
| public override int Int32 => (int)constant; |
| |
| /// <summary> |
| /// NOTE: This was getLong() in Lucene |
| /// </summary> |
| public override long Int64 => (long)constant; |
| |
| /// <summary> |
| /// NOTE: This was getFloat() in Lucene |
| /// </summary> |
| public override float Single => constant; |
| |
| public override double Double => dv; |
| |
| // LUCENENET NOTE: getNumber() not supported |
| |
| public override bool Bool => constant != 0.0f; |
| } |
| } |