Lucene.Net  3.0.3
Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.
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SimilarityDelegator.cs
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17 
18 using System;
19 
20 using FieldInvertState = Lucene.Net.Index.FieldInvertState;
21 
22 namespace Lucene.Net.Search
23 {
24  /// <summary>Expert: Delegating scoring implementation. Useful in <see cref="Query.GetSimilarity(Searcher)" />
25  /// implementations, to override only certain
26  /// methods of a Searcher's Similiarty implementation..
27  /// </summary>
28  [Serializable]
30  {
31  private Similarity delegee;
32 
33  /// <summary>Construct a <see cref="Similarity" /> that delegates all methods to another.</summary>
34  /// <param name="delegee">the Similarity implementation to delegate to</param>
36  {
37  this.delegee = delegee;
38  }
39 
40  public override float ComputeNorm(System.String fieldName, FieldInvertState state)
41  {
42  return delegee.ComputeNorm(fieldName, state);
43  }
44 
45  public override float LengthNorm(System.String fieldName, int numTerms)
46  {
47  return delegee.LengthNorm(fieldName, numTerms);
48  }
49 
50  public override float QueryNorm(float sumOfSquaredWeights)
51  {
52  return delegee.QueryNorm(sumOfSquaredWeights);
53  }
54 
55  public override float Tf(float freq)
56  {
57  return delegee.Tf(freq);
58  }
59 
60  public override float SloppyFreq(int distance)
61  {
62  return delegee.SloppyFreq(distance);
63  }
64 
65  public override float Idf(int docFreq, int numDocs)
66  {
67  return delegee.Idf(docFreq, numDocs);
68  }
69 
70  public override float Coord(int overlap, int maxOverlap)
71  {
72  return delegee.Coord(overlap, maxOverlap);
73  }
74 
75  public override float ScorePayload(int docId, string fieldName, int start, int end, byte[] payload, int offset, int length)
76  {
77  return delegee.ScorePayload(docId, fieldName, start, end, payload, offset, length);
78  }
79  }
80 }