| ChainedFilter |
Allows multiple Filters to be chained. |
| HighFreqTerms | HighFreqTerms class extracts terms and their frequencies out
of an existing Lucene index. |
| IndexMergeTool | Merges indices specified on the command line into the index
specified as the first command line argument. |
| LengthNormModifier | Given a directory, a Similarity, and a list of fields, updates the
fieldNorms in place for every document using the Similarity.lengthNorm. |
| SweetSpotSimilarity | A similarity with a lengthNorm that provides for a "platuea" of
equally good lengths, and tf helper functions. |