7 June 2015, Apache Luceneā„¢ 5.2.0 available

The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.0

Apache Lucene is a high-performance, full-featured text search engine
library written entirely in Java. It is a technology suitable for nearly
any application that requires full-text search, especially cross-platform.

This release contains numerous bug fixes, optimizations, and improvements,
some of which are highlighted below. The release is available for immediate
download at:

Please read CHANGES.txt for a full list of new features and changes:

Lucene 5.2.0 Release Highlights:

 * Span queries now share document conjunction/intersection code with
boolean queries, and use two-phased iterators for faster intersection by
avoiding loading positions in certain cases.

 * Added two-phase support to SpanNotQuery, and SpanPositionCheckQuery and
its subclasses: SpanPositionRangeQuery, SpanPayloadCheckQuery,
SpanNearPayloadCheckQuery, SpanFirstQuery.

 * Added a new query time join to the join module that uses global
ordinals, which is faster for subsequent joins between reopens.

 * New CompositeSpatialStrategy combines speed of RPT with accuracy of SDV.
Includes optimized Intersect predicate to avoid many geometry checks. Uses

 * New LimitTokenOffsetFilter that limits tokens to those before a
configured maximum start offset.

 *  New spatial PackedQuadPrefixTree, a generally more efficient choice
than QuadPrefixTree, especially for high precision shapes. When used, you
should typically disable RPT's pruneLeafyBranches option.

 * Expressions now support bindings keys that look like zero arg functions

 * Add SpanWithinQuery and SpanContainingQuery that return spans inside of
/ containing another spans.

 * New Spatial "Geo3d" API with partial Spatial4j integration. It is a set
of shapes implemented using 3D planar geometry for calculating spatial
relations on the surface of a sphere. Shapes include Point, BBox, Circle,
Path (buffered line string), and Polygon.

 * Various bugfixes and optimizations since the 5.1.0 release.

Please read CHANGES.txt for a full list of new features.

Please report any feedback to the mailing lists

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