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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NumericPayloadTokenFilter.cs
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21 
22 using System;
23 using Lucene.Net.Analysis.Tokenattributes;
24 using Lucene.Net.Index;
25 
26 namespace Lucene.Net.Analysis.Payloads
27 {
28  /// <summary>
29  /// Assigns a payload to a token based on the <see cref="Token.Type()"/>
30  /// </summary>
32  {
33  private String typeMatch;
34  private Payload thePayload;
35 
36  private IPayloadAttribute payloadAtt;
37  private ITypeAttribute typeAtt;
38 
39  public NumericPayloadTokenFilter(TokenStream input, float payload, String typeMatch)
40  : base(input)
41  {
42  //Need to encode the payload
43  thePayload = new Payload(PayloadHelper.EncodeFloat(payload));
44  this.typeMatch = typeMatch;
45  payloadAtt = AddAttribute<IPayloadAttribute>();
46  typeAtt = AddAttribute<ITypeAttribute>();
47  }
48 
49  public sealed override bool IncrementToken()
50  {
51  if (input.IncrementToken())
52  {
53  if (typeAtt.Type.Equals(typeMatch))
54  payloadAtt.Payload = thePayload;
55  return true;
56  }
57  else
58  {
59  return false;
60  }
61  }
62  }
63 }