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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MaxPayloadFunction.cs
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1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 using System;
19 
20 namespace Lucene.Net.Search.Payloads
21 {
22 
23 
24  /// <summary> Returns the maximum payload score seen, else 1 if there are no payloads on the doc.
25  /// <p/>
26  /// Is thread safe and completely reusable.
27  ///
28  ///
29  /// </summary>
30  [Serializable]
32  {
33  public override float CurrentScore(int docId, System.String field, int start, int end, int numPayloadsSeen, float currentScore, float currentPayloadScore)
34  {
35  if (numPayloadsSeen == 0)
36  {
37  return currentPayloadScore;
38  }
39  else
40  {
41  return System.Math.Max(currentPayloadScore, currentScore);
42  }
43  }
44 
45  public override float DocScore(int docId, System.String field, int numPayloadsSeen, float payloadScore)
46  {
47  return numPayloadsSeen > 0?payloadScore:1;
48  }
49 
50  public override int GetHashCode()
51  {
52  int prime = 31;
53  int result = 1;
54  result = prime * result + this.GetType().GetHashCode();
55  return result;
56  }
57 
58  public override bool Equals(System.Object obj)
59  {
60  if (this == obj)
61  return true;
62  if (obj == null)
63  return false;
64  if (GetType() != obj.GetType())
65  return false;
66  return true;
67  }
68  }
69 }