## Uses of Package
org.apache.lucene.search.join

Classes in org.apache.lucene.search.join used by org.apache.lucene.search.join
ToParentBlockJoinQuery This query requires that you index children and parent docs as a single block, using the `IndexWriter.addDocuments(java.util.Collection<org.apache.lucene.document.Document>)` or `IndexWriter.updateDocuments(org.apache.lucene.index.Term, java.util.Collection<org.apache.lucene.document.Document>)` API.
ToParentBlockJoinQuery.ScoreMode How to aggregate multiple child hit scores into a single parent score.