Codecs for reading indexes from older versions of Lucene.

Packages

Package	Description
org.apache.lucene.backward_codecs	Common APIs for use by backwards compatibility codecs.
org.apache.lucene.backward_codecs.compressing	Compressing helper classes.
org.apache.lucene.backward_codecs.lucene40.blocktree	BlockTree terms dictionary.
org.apache.lucene.backward_codecs.lucene50	Lucene 5.0 file format.
org.apache.lucene.backward_codecs.lucene50.compressing	Lucene 5.0 compressing format.
org.apache.lucene.backward_codecs.lucene60	Lucene 6.0 file format.
org.apache.lucene.backward_codecs.lucene70	Components from the Lucene 7.0 index format.
org.apache.lucene.backward_codecs.lucene80	Components from the Lucene 8.0 index format.
org.apache.lucene.backward_codecs.lucene84	Lucene 8.4 file format.
org.apache.lucene.backward_codecs.lucene86	Lucene 8.6 file format.
org.apache.lucene.backward_codecs.lucene87	Lucene 8.7 file format.
org.apache.lucene.backward_codecs.lucene90	Lucene 9.0 file format.
org.apache.lucene.backward_codecs.lucene91	Lucene 9.1 file format.
org.apache.lucene.backward_codecs.lucene92	Lucene 9.2 file format.
org.apache.lucene.backward_codecs.lucene94	Lucene 9.4 file format.
org.apache.lucene.backward_codecs.packed	Legacy PackedInts methods
org.apache.lucene.backward_codecs.store	store helper