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  • package root
    Definition Classes
    root
  • package quasar
    Definition Classes
    root
  • package qscript

    The various representations of an arbitrary query, as seen by the filesystem connectors, along with the operations for dealing with them.

    The various representations of an arbitrary query, as seen by the filesystem connectors, along with the operations for dealing with them.

    There are a few patterns that are worth noting: - (src: A, ..., lBranch: FreeQS[T], rBranch: FreeQS[T], ...) – used in operations that combine multiple data sources (notably joins and unions). This holds the divergent parts of the data sources in the branches, with SrcHole indicating a reference back to the common src of the two branches. There is not required to be a SrcHole. - Free[F, A] – we use this structure as a restricted form of variable binding, where F is some pattern functor, and A is some enumeration that has a specific referent. E.g., FreeMap is a recursive structure of MapFunc that has a single “variable”, SrcHole, which (usually) refers to the src parameter of that operation. JoinFunc, FreeQS, and the repair parameter to Reduce behave similarly. - We use the type parameter QS[_] to indicate QScript, as well as the type parameters IN[_] and OUT[_] to indicate the input and output coproducts in transformations where they can be different.

    Definition Classes
    quasar
  • package qsu
    Definition Classes
    qscript
  • object QSUGraph extends QSUGraphInstances with Serializable
    Definition Classes
    qsu
  • Extractors
  • QSUPattern

object Extractors

This object contains extraction helpers in terms of QSU nodes.

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  20. object AutoJoin2
  21. object AutoJoin2C
  22. object AutoJoin3
  23. object AutoJoin3C
  24. object DataConstant
  25. object DataConstantMapped
  26. object DimEdit
  27. object Distinct
  28. object FMFC1
  29. object GroupBy
  30. object JoinSideRef
  31. object LPFilter
  32. object LPJoin
  33. object LPReduce
  34. object LPSort
  35. object LeftShift
  36. object Map
  37. object MultiLeftShift
  38. object QSAutoJoin
  39. object QSFilter
  40. object QSReduce
  41. object QSSort
  42. object Read
  43. object Subset
  44. object TRead
  45. object ThetaJoin
  46. object Transpose
  47. object Unary
  48. object Union
  49. object Unreferenced

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