# Uses of Class
org.apache.lucene.index.Impact

Packages that use Impact
Package
Description
org.apache.lucene.codecs
Codecs API: API for customization of the encoding and structure of the index.
org.apache.lucene.index
Code to maintain and access indices.

## Uses of Impact in org.apache.lucene.codecs

Methods in org.apache.lucene.codecs that return types with arguments of type Impact
Modifier and Type
Method
Description
`List<Impact>`
CompetitiveImpactAccumulator.`getCompetitiveFreqNormPairs()`
Get the set of competitive freq and norm pairs, ordered by increasing freq and norm.

## Uses of Impact in org.apache.lucene.index

Methods in org.apache.lucene.index that return types with arguments of type Impact
Modifier and Type
Method
Description
`abstract List<Impact>`
Impacts.`getImpacts(int level)`
Return impacts on the given level.