Title: Apache Lucene 5.4.0 Available category: core/news URL: save_as:

The Lucene PMC is pleased to announce the release of Apache Lucene 5.4.0

The release can be downloaded from https://lucene.apache.org/core/mirrors-core-latest-redir.html

Highlights of this Lucene release include:

####API Changes

• Query.getBoost and Query.setBoost are deprecated in favour of the new BoostQuery
• The Filter class is deprecated in favour of FILTER clauses in a BooleanQuery
• DefaultSimilarity has been renamed to ClassicSimilarity to prepare for the move to BM25 in Lucene 6

####New features

• New Serbian token filter
• New DecimalDigitFilter, to fold unicode digits to latin digits
• New UnicodeWhitespaceTokenizer, that uses Unicode's whitespace definition and splits on NBSP
• New GeoPointDistanceRangeQuery to search for geo-points within a ring
• Query caching is now enabled by default in IndexSearcher, use IndexSearcher.setQueryCache(null) to disable

####Optimizations

• MatchAllDocsQuery got faster
• Doc values now use less memory for multi-valued fields and less disk in case of sparse fields
• Two-phase iterators got a match cost API so that the costly bits can be checked last

####Bug fixes

• PatternTokenizer no longer hangs onto heap sized to the maximum input string it's ever seen.