Optimizer

Value Members

1. final def !=(arg0: Any): Boolean

   

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2. final def ##(): Int

   

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3. final def ==(arg0: Any): Boolean

   

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4. final def asInstanceOf[T0]: T0

   

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5. def clone(): AnyRef

   

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6. val elideLets: (LogicalPlan[T]) ⇒ slamdata.Predef.Option[LogicalPlan[T]]

   

   Like simplifyƒ, but eliminates _all_ Let (and any bound Free) nodes.

7. val elideTypeCheckƒ: Algebra[LogicalPlan, T]

   

8. final def eq(arg0: AnyRef): Boolean

   

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9. def equals(arg0: Any): Boolean

   

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10. def finalize(): Unit

    

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11. final def getClass(): Class[_]

    

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12. def hashCode(): Int

    

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13. final def isInstanceOf[T0]: Boolean

    

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14. val lpr: LogicalPlanR[T]

    

15. val namesƒ: Algebra[LogicalPlan, slamdata.Predef.Set[slamdata.Predef.Symbol]]

    

16. final def ne(arg0: AnyRef): Boolean

    

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17. final def notify(): Unit

    

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18. final def notifyAll(): Unit

    

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19. val optimize: (T) ⇒ T

    

    Apply universal, type-oblivious transformations intended to improve the performance of a query regardless of the backend.

    Apply universal, type-oblivious transformations intended to improve the performance of a query regardless of the backend. The input is expected to come straight from the SQL^2 compiler or another source of un-optimized queries.

20. def preferProjections(t: T): T

    

21. def pullUpGroupBy(tree: T)(implicit TR: Aux[T, LogicalPlan], TC: Aux[T, LogicalPlan]): T

    

    Pulls a nested GroupBy up to the immediate child of the nearest Arbitrary, applying any intermediate expressions to the source of the GroupBy.

22. val reconstructOldJoins: Algebra[LogicalPlan, T]

    

23. val rewriteCrossJoinsƒ: (LogicalPlan[(T, T)]) ⇒ State[NameGen, T]

    

    Rewrite joins and subsequent filtering so that: 1) Filtering that is equivalent to an equi-join is rewritten into the join condition.

    Rewrite joins and subsequent filtering so that: 1) Filtering that is equivalent to an equi-join is rewritten into the join condition. 2) Filtering that refers to only side of the join is hoisted prior to the join. The input plan must have been simplified already so that the structure is in a canonical form for inspection.

    TODO: Separate the combining of filter and join from ...

24. val rewriteJoins: (T) ⇒ T

    

    In rewriteJoins we maintain the association and nested level of let bindings by not calling normalizeLets (as we do in optimize).

    In rewriteJoins we maintain the association and nested level of let bindings by not calling normalizeLets (as we do in optimize). We would like rewriteJoins to be identical to optimize, but can only begin to address this after old mongo is deleted.

25. val shapeƒ: GAlgebra[[β$2$](T, β$2$), LogicalPlan, slamdata.Predef.Option[slamdata.Predef.List[T]]]

    

26. def simplify(t: T): T

    

27. val simplifyƒ: (LogicalPlan[T]) ⇒ slamdata.Predef.Option[LogicalPlan[T]]

    

28. final def synchronized[T0](arg0: ⇒ T0): T0

    

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29. def toString(): String

    

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30. def uniqueName[F[_]](prefix: slamdata.Predef.String, plans: F[T])(implicit arg0: Functor[F], arg1: Foldable[F]): slamdata.Predef.Symbol

    

31. final def wait(): Unit

    

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32. final def wait(arg0: Long, arg1: Int): Unit

    

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33. final def wait(arg0: Long): Unit

    

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