c

slick.compiler

MergeToComprehensions

class MergeToComprehensions extends Phase

This phase merges nested nodes of types Bind, Filter, GroupBy, SortBy, Take, Drop, CollectionCast and Distinct to Comprehension nodes. Nodes can be merged if they occur in the following order:

[Source] -> Filter (where) -> GroupBy -> SortBy / (Distinct | Filter (having)) -> Take / Drop

Aliasing Binds and CollectionCasts are allowed everywhere in the chain. Any out of order operation starts a new chain with a subquery as the source.

Source
MergeToComprehensions.scala
Linear Supertypes
Phase, Logging, (CompilerState) => CompilerState, AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. MergeToComprehensions
  2. Phase
  3. Logging
  4. Function1
  5. AnyRef
  6. Any
Implicitly
  1. by StringFormat
  2. by Ensuring
  3. by ArrowAssoc
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new MergeToComprehensions()

Type Members

  1. type Mappings = ConstArray[((TypeSymbol, TermSymbol), List[TermSymbol])]
  2. type Replacements = Map[(TypeSymbol, TermSymbol), TermSymbol]

    A map from a TypeSymbol and a field on top of it to a new Symbol

  3. abstract type State

    The immutable state of the phase that can also be accessed by other phases.

    The immutable state of the phase that can also be accessed by other phases.

    Definition Classes
    Phase

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def ->[B](y: B): (MergeToComprehensions, B)
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toArrowAssoc[MergeToComprehensions] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  4. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  5. def and(p1: Node, p2: Node): Node
  6. def andThen[A](g: (CompilerState) => A): (CompilerState) => A
    Definition Classes
    Function1
    Annotations
    @unspecialized()
  7. def apply(state: CompilerState): CompilerState

    Run the phase

    Run the phase

    Definition Classes
    MergeToComprehensions → Phase → Function1
  8. def applyReplacements(n1: Node, r: Replacements, c: Comprehension[Option[Node]]): Node

    Apply the replacements and current selection of a Comprehension to a new Node that will be merged into the Comprehension.

  9. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  10. def buildSubquery(n: Node, mappings: Mappings): (Base, Replacements)

    Lift a valid top-level or source Node into a subquery

  11. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
  12. def compose[A](g: (A) => CompilerState): (A) => CompilerState
    Definition Classes
    Function1
    Annotations
    @unspecialized()
  13. def convert(tree: Node): Node
  14. def dealias(n: Node)(f: (Node) => (Node, Mappings)): (Node, Mappings)

    Remove purely aliasing Bind mappings, apply the conversion to the source, then inject the mappings back into the source's mappings.

  15. def ensuring(cond: (MergeToComprehensions) => Boolean, msg: => Any): MergeToComprehensions
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toEnsuring[MergeToComprehensions] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  16. def ensuring(cond: (MergeToComprehensions) => Boolean): MergeToComprehensions
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toEnsuring[MergeToComprehensions] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  17. def ensuring(cond: Boolean, msg: => Any): MergeToComprehensions
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toEnsuring[MergeToComprehensions] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  18. def ensuring(cond: Boolean): MergeToComprehensions
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toEnsuring[MergeToComprehensions] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  19. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  20. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  21. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  22. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  23. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  24. lazy val logger: SlickLogger
    Attributes
    protected[this]
    Definition Classes
    Logging
  25. def mergeCommon(rec: (Node, Boolean) => (Base, Replacements), parent: (Node, Boolean) => (Base, Replacements), n: Node, buildBase: Boolean, allowFilter: Boolean = true): (Base, Replacements)

    Merge the common operations Bind, Filter and CollectionCast into an existing Comprehension.

    Merge the common operations Bind, Filter and CollectionCast into an existing Comprehension. This method is used at different stages of the pipeline. If the Comprehension already contains a Distinct clause, it is pushed into a subquery.

  26. val name: String

    The unique name of the phase

    The unique name of the phase

    Definition Classes
    MergeToComprehensions → Phase
  27. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  28. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  29. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  30. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  31. def toString(): String
    Definition Classes
    Function1 → AnyRef → Any
  32. def toSubquery(n: Base, r: Replacements): (Base, Replacements)
  33. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  34. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  35. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  36. object FwdPathOnTypeSymbol

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

  2. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toStringFormat[MergeToComprehensions] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  3. def →[B](y: B): (MergeToComprehensions, B)
    Implicit
    This member is added by an implicit conversion from MergeToComprehensions toArrowAssoc[MergeToComprehensions] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from Phase

Inherited from Logging

Inherited from (CompilerState) => CompilerState

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion StringFormat fromMergeToComprehensions to StringFormat[MergeToComprehensions]

Inherited by implicit conversion Ensuring fromMergeToComprehensions to Ensuring[MergeToComprehensions]

Inherited by implicit conversion ArrowAssoc fromMergeToComprehensions to ArrowAssoc[MergeToComprehensions]

Ungrouped