# All Packages

Package Summary
Package
Description
org.apache.lucene.payloads
Experimental classes for interacting with payloads
org.apache.lucene.sandbox.codecs.idversion
A primary-key postings format that associates a version (long) with each term and can provide fail-fast lookups by ID and version.
org.apache.lucene.sandbox.codecs.quantization
This package implements KMeans algorithm for clustering vectors
org.apache.lucene.sandbox.document
This package contains several point types: `BigIntegerPoint` for 128-bit integers `LatLonPoint` for latitude/longitude geospatial points
org.apache.lucene.sandbox.facet
Sandbox faceting - Collectors that compute facets.
org.apache.lucene.sandbox.facet.cutters
Sandbox faceting: facet cutters, see `FacetCutter` for details.
org.apache.lucene.sandbox.facet.cutters.ranges
Sandbox faceting: Range Faceting
org.apache.lucene.sandbox.facet.iterators
Sandbox faceting: facet ordinals.
org.apache.lucene.sandbox.facet.labels
Sandbox faceting: facet labels, see `OrdToLabel` for details.
org.apache.lucene.sandbox.facet.recorders
Sandbox faceting: classes that can record per ordinal data E.g.
org.apache.lucene.sandbox.index
Experimental index-related classes
org.apache.lucene.sandbox.queries
Additional queries (some may have caveats or limitations)
org.apache.lucene.sandbox.search
This package contains a flexible graph-based proximity query, TermAutomatonQuery, and geospatial queries.