# Lucene 3.4.0 contrib-join API

Lucene's join module

See:
Description

Packages
org.apache.lucene.search.join: This module supports index-time joins while searching, where joined documents are indexed as a single document block using `IndexWriter.addDocuments(java.util.Collection<org.apache.lucene.document.Document>)`.

Lucene's join module

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