| // Lucene version compatibility level 4.8.1 |
| using Lucene.Net.Index; |
| using Lucene.Net.Queries.Function.DocValues; |
| using Lucene.Net.Search; |
| 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="BoolFunction"/> implementation which applies an extendible <see cref="bool"/> |
| /// function to the values of a single wrapped <see cref="ValueSource"/>. |
| /// |
| /// Functions this can be used for include whether a field has a value or not, |
| /// or inverting the <see cref="bool"/> value of the wrapped <see cref="ValueSource"/>. |
| /// </summary> |
| public abstract class SimpleBoolFunction : BoolFunction |
| { |
| protected readonly ValueSource m_source; |
| |
| protected SimpleBoolFunction(ValueSource source) // LUCENENET: CA1012: Abstract types should not have constructors (marked protected) |
| { |
| this.m_source = source; |
| } |
| |
| protected abstract string Name { get; } |
| |
| protected abstract bool Func(int doc, FunctionValues vals); |
| |
| public override FunctionValues GetValues(IDictionary context, AtomicReaderContext readerContext) |
| { |
| FunctionValues vals = m_source.GetValues(context, readerContext); |
| return new BoolDocValuesAnonymousClass(this, this, vals); |
| } |
| |
| private class BoolDocValuesAnonymousClass : BoolDocValues |
| { |
| private readonly SimpleBoolFunction outerInstance; |
| |
| private readonly FunctionValues vals; |
| |
| public BoolDocValuesAnonymousClass(SimpleBoolFunction outerInstance, SimpleBoolFunction @this, FunctionValues vals) |
| : base(@this) |
| { |
| this.outerInstance = outerInstance; |
| this.vals = vals; |
| } |
| |
| public override bool BoolVal(int doc) |
| { |
| return outerInstance.Func(doc, vals); |
| } |
| public override string ToString(int doc) |
| { |
| return outerInstance.Name + '(' + vals.ToString(doc) + ')'; |
| } |
| } |
| |
| public override string GetDescription() |
| { |
| return Name + '(' + m_source.GetDescription() + ')'; |
| } |
| |
| public override int GetHashCode() |
| { |
| return m_source.GetHashCode() + Name.GetHashCode(); |
| } |
| |
| public override bool Equals(object o) |
| { |
| if (!(o is SimpleBoolFunction other)) |
| return false; |
| return this.m_source.Equals(other.m_source); |
| } |
| |
| public override void CreateWeight(IDictionary context, IndexSearcher searcher) |
| { |
| m_source.CreateWeight(context, searcher); |
| } |
| } |
| } |