# Package org.apache.solr.search.join

Classes related to joins.

See: Description

- Class Summary
  Class | Description
  --- | ---
  BlockJoinChildQParser |
  BlockJoinChildQParserPlugin | Usage: {!child of="PARENT:true"}PARENT_PRICE:10
  BlockJoinDocSetFacetComponent | Calculates facets on children documents and aggregates hits by parent documents.
  BlockJoinFacetComponent | this is just a stub refers to `BlockJoinDocSetFacetComponent` to avoid changes in configs
  BlockJoinParentQParser |
  BlockJoinParentQParserPlugin | Usage: {!parent which="PARENT:true"}CHILD_PRICE:10 supports optional `score` parameter with one of `ScoreMode` values: None,Avg,Total,Min,Max.
  GraphQParserPlugin | Query parser plugin for solr to wrap the graph query parser.
  GraphQuery | GraphQuery - search for nodes and traverse edges in an index.
  GraphQueryParser | Solr query parser that will handle parsing graph query requests.
  ScoreJoinQParserPlugin | Create a query-time join query with scoring.

## Package org.apache.solr.search.join Description

Classes related to joins.

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