/*
* Copyright 2005 The Apache Software Foundation
*
* Licensed 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.
*/
using System;
namespace Lucene.Net.Search{
/// <summary>Expert: Delegating scoring implementation. Useful in {@link
/// Query#GetSimilarity(Searcher)} implementations, to override only certain
/// methods of a Searcher's Similiarty implementation..
/// </summary>
[Serializable]
public class SimilarityDelegator : Similarity
{
private Similarity delegee;
/// <summary>Construct a {@link Similarity} that delegates all methods to another.
///
/// </summary>
/// <param name="delegee">the Similarity implementation to delegate to
/// </param>
public SimilarityDelegator(Similarity delegee)
{
this.delegee = delegee;
}
public override float LengthNorm(System.String fieldName, int numTerms)
{
return delegee.LengthNorm(fieldName, numTerms);
}
public override float QueryNorm(float sumOfSquaredWeights)
{
return delegee.QueryNorm(sumOfSquaredWeights);
}
public override float Tf(float freq)
{
return delegee.Tf(freq);
}
public override float SloppyFreq(int distance)
{
return delegee.SloppyFreq(distance);
}
public override float Ldf(int docFreq, int numDocs)
{
return delegee.Ldf(docFreq, numDocs);
}
public override float Coord(int overlap, int maxOverlap)
{
return delegee.Coord(overlap, maxOverlap);
}
}
}
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