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FloatFieldSource.cs
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FloatFieldSource.cs
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// 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) ? J2N.Numerics.Single.GetInstance(arr.Get(doc)) : null; // LUCENENET: In Java, the conversion to instance of java.util.Float is implicit, but we need to do an explicit conversion
}
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 is null ? other.m_parser is null : this.m_parser.GetType() == other.m_parser.GetType());
}
public override int GetHashCode()
{
int h = m_parser is null ? typeof(float).GetHashCode() : m_parser.GetType().GetHashCode();
h += base.GetHashCode();
return h;
}
}
}