org.eclipse.rdf4j.federated.algebra

## Interface QueryRef

- All Known Subinterfaces:
    ExclusiveTupleExpr, ExclusiveTupleExprRenderer, FedXTupleExpr, StatementTupleExpr
  All Known Implementing Classes:
    CheckStatementPattern, EmptyNJoin, EmptyNUnion, ExclusiveArbitraryLengthPath, ExclusiveGroup, ExclusiveStatement, FedXStatementPattern, NJoin, NTuple, NUnion, SingleSourceQuery, StatementSourcePattern

      public interface QueryRef

  Interface to access the `QueryInfo` from all FedX Algebra nodes. All FedX Algebra nodes should implement this interface.
  Author:
    Andreas Schwarte

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `QueryInfo` | `getQueryInfo()` Retrieve the attached query information of the tuple expression

- - ### Method Detail

    - #### getQueryInfo

          QueryInfo getQueryInfo()

      Retrieve the attached query information of the tuple expression
      Returns:
        the `QueryInfo`

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