Class PayloadFunction

An abstract class that defines a way for Payload*Query instances to transform the cumulative effects of payload scores for a document.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

this class and its derivations are experimental and subject to change

Inheritance
System.Object
PayloadFunction
AveragePayloadFunction
MaxPayloadFunction
MinPayloadFunction
Inherited Members
System.Object.Equals(System.Object, System.Object)
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Lucene.Net.Search.Payloads
Assembly: Lucene.Net.dll
Syntax
public abstract class PayloadFunction

Methods

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CurrentScore(Int32, String, Int32, Int32, Int32, Single, Single)

Calculate the score up to this point for this doc and field

Declaration
public abstract float CurrentScore(int docId, string field, int start, int end, int numPayloadsSeen, float currentScore, float currentPayloadScore)
Parameters
Type Name Description
System.Int32 docId

The current doc

System.String field

The field

System.Int32 start

The start position of the matching Span

System.Int32 end

The end position of the matching Span

System.Int32 numPayloadsSeen

The number of payloads seen so far

System.Single currentScore

The current score so far

System.Single currentPayloadScore

The score for the current payload

Returns
Type Description
System.Single

The new current Score
See Also
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DocScore(Int32, String, Int32, Single)

Calculate the final score for all the payloads seen so far for this doc/field

Declaration
public abstract float DocScore(int docId, string field, int numPayloadsSeen, float payloadScore)
Parameters
Type Name Description
System.Int32 docId

The current doc

System.String field

The current field

System.Int32 numPayloadsSeen

The total number of payloads seen on this document

System.Single payloadScore

The raw score for those payloads

Returns
Type Description
System.Single

The final score for the payloads

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Equals(Object)

Declaration
public abstract override bool Equals(object o)
Parameters
Type Name Description
System.Object o
Returns
Type Description
System.Boolean
Overrides
System.Object.Equals(System.Object)
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Explain(Int32, String, Int32, Single)

Declaration
public virtual Explanation Explain(int docId, string field, int numPayloadsSeen, float payloadScore)
Parameters
Type Name Description
System.Int32 docId
System.String field
System.Int32 numPayloadsSeen
System.Single payloadScore
Returns
Type Description
Explanation
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GetHashCode()

Declaration
public abstract override int GetHashCode()
Returns
Type Description
System.Int32
Overrides
System.Object.GetHashCode()

See Also