lucene源码分析 - backward-codecs

overview.html
Codecs for reading indexes from older versions of Lucene.

用于读取来自旧版本Lucene的索引。

backward-codecs/src/java/org/apache/lucene/codecs/lucene70/Lucene70Codec.java

/**
 * Implements the Lucene 7.0 index format, with configurable per-field postings
 * and docvalues formats.
 * <p>
 * If you want to reuse functionality of this codec in another codec, extend
 * {@link FilterCodec}.
 *
 * @see org.apache.lucene.codecs.lucene70 package documentation for file format details.
 *
 * @lucene.experimental
 */

实现Lucene7.0索引格式化