# Uses of Interface
org.apache.lucene.index.ImpactsSource

Packages that use ImpactsSource
Package
Description
org.apache.lucene.index
Code to maintain and access indices.
org.apache.lucene.search
Code to search indices.

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

Classes in org.apache.lucene.index that implement ImpactsSource
Modifier and Type
Class
Description
`class`
`ImpactsEnum`
Extension of `PostingsEnum` which also provides information about upcoming impacts.
`final class`
`SlowImpactsEnum`
`ImpactsEnum` that doesn't index impacts but implements the API in a legal way.

## Uses of ImpactsSource in org.apache.lucene.search

Constructors in org.apache.lucene.search with parameters of type ImpactsSource
Modifier
Constructor
Description
``
`MaxScoreCache(ImpactsSource impactsSource, Similarity.SimScorer scorer)`
Sole constructor.