com.atlassian.confluence.internal.index.lucene

Class EdgeIndexSimilarity

java.lang.Object

org.apache.lucene.search.similarities.Similarity

org.apache.lucene.search.similarities.TFIDFSimilarity

org.apache.lucene.search.similarities.DefaultSimilarity

com.atlassian.confluence.internal.index.lucene.EdgeIndexSimilarity

public class EdgeIndexSimilarity
extends org.apache.lucene.search.similarities.DefaultSimilarity

Similarity class for edge index

Since:

7.17

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Similarity

org.apache.lucene.search.similarities.Similarity.SimScorer, org.apache.lucene.search.similarities.Similarity.SimWeight

Field Summary

Fields inherited from class org.apache.lucene.search.similarities.DefaultSimilarity

discountOverlaps

Constructor Summary

Constructors

Constructor and Description
EdgeIndexSimilarity()

Method Summary

Modifier and Type	Method and Description
float	coord(int overlap, int maxOverlap) All fields in edge index only contain a single value.
float	idf(long docFreq, long numDocs)
float	queryNorm(float sumOfSquaredWeights)
float	tf(float freq)

Methods inherited from class org.apache.lucene.search.similarities.DefaultSimilarity

decodeNormValue, encodeNormValue, getDiscountOverlaps, lengthNorm, scorePayload, setDiscountOverlaps, sloppyFreq, toString

Methods inherited from class org.apache.lucene.search.similarities.TFIDFSimilarity

computeNorm, computeWeight, idfExplain, idfExplain, simScorer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

EdgeIndexSimilarity

public EdgeIndexSimilarity()

Method Detail

coord

public float coord(int overlap,
                   int maxOverlap)

All fields in edge index only contain a single value. It is therefore not possible for a single field to match multiple query terms (unless they are all the same). Hence, we can disregard the maxOverlap parameter.

Overrides:

coord in class org.apache.lucene.search.similarities.DefaultSimilarity

tf

public float tf(float freq)

Overrides:

tf in class org.apache.lucene.search.similarities.DefaultSimilarity

idf

public float idf(long docFreq,
                 long numDocs)

Overrides:

idf in class org.apache.lucene.search.similarities.DefaultSimilarity

queryNorm

public float queryNorm(float sumOfSquaredWeights)

Overrides:

queryNorm in class org.apache.lucene.search.similarities.DefaultSimilarity