org.apache.lucene.search.payloads
Class AveragePayloadFunction

java.lang.Object
  org.apache.lucene.search.payloads.PayloadFunction
      org.apache.lucene.search.payloads.AveragePayloadFunction

All Implemented Interfaces:

Serializable

public class AveragePayloadFunction
extends PayloadFunction

Calculate the final score as the average score of all payloads seen.

Is thread safe and completely reusable.

See Also:

Serialized Form

Constructor Summary

AveragePayloadFunction()

Method Summary

float	currentScore(int docId, String field, int start, int end, int numPayloadsSeen, float currentScore, float currentPayloadScore) Calculate the score up to this point for this doc and field
float	docScore(int docId, String field, int numPayloadsSeen, float payloadScore) Calculate the final score for all the payloads seen so far for this doc/field
boolean	equals(Object obj)
Explanation	explain(int doc, int numPayloadsSeen, float payloadScore)
int	hashCode()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AveragePayloadFunction

public AveragePayloadFunction()

Method Detail

currentScore

public float currentScore(int docId,
                          String field,
                          int start,
                          int end,
                          int numPayloadsSeen,
                          float currentScore,
                          float currentPayloadScore)

Description copied from class: PayloadFunction

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

Specified by:

currentScore in class PayloadFunction

Parameters:

docId - The current doc

field - The field

start - The start position of the matching Span

end - The end position of the matching Span

numPayloadsSeen - The number of payloads seen so far

currentScore - The current score so far

currentPayloadScore - The score for the current payload

Returns:

The new current Score

See Also:

Spans

docScore

public float docScore(int docId,
                      String field,
                      int numPayloadsSeen,
                      float payloadScore)

Description copied from class: PayloadFunction

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

Specified by:

docScore in class PayloadFunction

Parameters:

docId - The current doc

field - The current field

numPayloadsSeen - The total number of payloads seen on this document

payloadScore - The raw score for those payloads

Returns:

The final score for the payloads

explain

public Explanation explain(int doc,
                           int numPayloadsSeen,
                           float payloadScore)

Overrides:

explain in class PayloadFunction

hashCode

public int hashCode()

Specified by:

hashCode in class PayloadFunction

equals

public boolean equals(Object obj)

Specified by:

equals in class PayloadFunction