| // Lucene version compatibility level 4.8.1 |
| using Lucene.Net.Index; |
| using Lucene.Net.Queries.Function.DocValues; |
| using Lucene.Net.Search; |
| using Lucene.Net.Util; |
| using Lucene.Net.Util.Mutable; |
| 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> |
| /// Obtains <see cref="float"/> field values from <see cref="IFieldCache.GetSingles(AtomicReader, string, FieldCache.ISingleParser, bool)"/> and makes those |
| /// values available as other numeric types, casting as needed. |
| /// <para/> |
| /// NOTE: This was FloatFieldSource in Lucene |
| /// </summary> |
| public class SingleFieldSource : FieldCacheSource |
| { |
| protected readonly FieldCache.ISingleParser m_parser; |
| |
| public SingleFieldSource(string field) |
| : this(field, null) |
| { |
| } |
| |
| public SingleFieldSource(string field, FieldCache.ISingleParser parser) |
| : base(field) |
| { |
| this.m_parser = parser; |
| } |
| |
| public override string GetDescription() |
| { |
| return "float(" + m_field + ')'; |
| } |
| |
| public override FunctionValues GetValues(IDictionary context, AtomicReaderContext readerContext) |
| { |
| var arr = m_cache.GetSingles(readerContext.AtomicReader, m_field, m_parser, true); |
| var valid = m_cache.GetDocsWithField(readerContext.AtomicReader, m_field); |
| return new SingleDocValuesAnonymousClass(this, arr, valid); |
| } |
| |
| private class SingleDocValuesAnonymousClass : SingleDocValues |
| { |
| private readonly FieldCache.Singles arr; |
| private readonly IBits valid; |
| |
| public SingleDocValuesAnonymousClass(SingleFieldSource @this, FieldCache.Singles arr, IBits valid) |
| : base(@this) |
| { |
| this.arr = arr; |
| this.valid = valid; |
| } |
| |
| /// <summary> |
| /// NOTE: This was floatVal() in Lucene |
| /// </summary> |
| public override float SingleVal(int doc) |
| { |
| return arr.Get(doc); |
| } |
| |
| public override object ObjectVal(int doc) |
| { |
| return valid.Get(doc) ? arr.Get(doc) : (float?)null; |
| } |
| |
| public override bool Exists(int doc) |
| { |
| return arr.Get(doc) != 0 || valid.Get(doc); |
| } |
| |
| public override ValueFiller GetValueFiller() |
| { |
| return new ValueFiller.AnonymousValueFiller<MutableValueSingle>(new MutableValueSingle(), fillValue: (doc, mutableValue) => |
| { |
| mutableValue.Value = arr.Get(doc); |
| mutableValue.Exists = mutableValue.Value != 0 || valid.Get(doc); |
| }); |
| } |
| } |
| |
| public override bool Equals(object o) |
| { |
| if (!(o is SingleFieldSource other)) |
| return false; |
| return base.Equals(other) && (this.m_parser == null ? other.m_parser == null : this.m_parser.GetType() == other.m_parser.GetType()); |
| } |
| |
| public override int GetHashCode() |
| { |
| int h = m_parser == null ? typeof(float?).GetHashCode() : m_parser.GetType().GetHashCode(); |
| h += base.GetHashCode(); |
| return h; |
| } |
| } |
| } |