scala.slick.driver.AccessDriver

ExistsToCount

class ExistsToCount extends Phase

Query compiler phase that rewrites Exists calls in projections to equivalent CountAll > 0 calls which can then be fused into aggregation sub-queries in the fuseComprehensions phase.

Source
AccessDriver.scala
Linear Supertypes
Phase, Logging, (CompilerState) ⇒ CompilerState, AnyRef, Any
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Inherited
  1. ExistsToCount
  2. Phase
  3. Logging
  4. Function1
  5. AnyRef
  6. Any
Implicitly
  1. by any2stringadd
  2. by any2stringfmt
  3. by any2ArrowAssoc
  4. by any2Ensuring
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new ExistsToCount()

Type Members

  1. 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: AnyRef): Boolean

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. def +(other: String): String

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to StringAdd performed by method any2stringadd in scala.Predef.
    Definition Classes
    StringAdd

  5. def ->[B](y: B): (ExistsToCount, B)

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to ArrowAssoc[ExistsToCount] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  6. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  8. def andThen[A](g: (CompilerState) ⇒ A): (CompilerState) ⇒ A

    Definition Classes
    Function1
    Annotations
    @unspecialized()

  9. def apply(state: CompilerState): CompilerState

    Run the phase

    Run the phase

    Definition Classes
    ExistsToCount → Phase → Function1

  10. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  11. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  12. def compose[A](g: (A) ⇒ CompilerState): (A) ⇒ CompilerState

    Definition Classes
    Function1
    Annotations
    @unspecialized()

  13. def ensuring(cond: (ExistsToCount) ⇒ Boolean, msg: ⇒ Any): ExistsToCount

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to Ensuring[ExistsToCount] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  14. def ensuring(cond: (ExistsToCount) ⇒ Boolean): ExistsToCount

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to Ensuring[ExistsToCount] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  15. def ensuring(cond: Boolean, msg: ⇒ Any): ExistsToCount

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to Ensuring[ExistsToCount] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  16. def ensuring(cond: Boolean): ExistsToCount

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to Ensuring[ExistsToCount] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring

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

    Definition Classes
    AnyRef

  18. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  19. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  20. def formatted(fmtstr: String): String

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to StringFormat performed by method any2stringfmt in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

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

    Definition Classes
    AnyRef → Any

  22. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  23. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  24. lazy val logger: SlickLogger

    Attributes
    protected[this]
    Definition Classes
    Logging

  25. val name: String

    The unique name of the phase

    The unique name of the phase

    Definition Classes
    ExistsToCount → Phase

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

    Definition Classes
    AnyRef

  27. final def notify(): Unit

    Definition Classes
    AnyRef

  28. final def notifyAll(): Unit

    Definition Classes
    AnyRef

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

    Definition Classes
    AnyRef

  30. def toString(): String

    Definition Classes
    Function1 → AnyRef → Any

  31. def tr(n: Node, inSelect: Boolean): Node

    Attributes
    protected

  32. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  35. def →[B](y: B): (ExistsToCount, B)

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to ArrowAssoc[ExistsToCount] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Shadowed Implicit Value Members

  1. val self: Any

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to StringAdd performed by method any2stringadd in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (existsToCount: StringAdd).self
    Definition Classes
    StringAdd

  2. val self: Any

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to StringFormat performed by method any2stringfmt in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (existsToCount: StringFormat).self
    Definition Classes
    StringFormat

Deprecated Value Members

  1. def x: ExistsToCount

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to ArrowAssoc[ExistsToCount] performed by method any2ArrowAssoc in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (existsToCount: ArrowAssoc[ExistsToCount]).x
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use leftOfArrow instead

  2. def x: ExistsToCount

    Implicit information
    This member is added by an implicit conversion from ExistsToCount to Ensuring[ExistsToCount] performed by method any2Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (existsToCount: Ensuring[ExistsToCount]).x
    Definition Classes
    Ensuring
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use resultOfEnsuring instead

Inherited from Phase

Inherited from Logging

Inherited from (CompilerState) ⇒ CompilerState

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from ExistsToCount to StringAdd

Inherited by implicit conversion any2stringfmt from ExistsToCount to StringFormat

Inherited by implicit conversion any2ArrowAssoc from ExistsToCount to ArrowAssoc[ExistsToCount]

Inherited by implicit conversion any2Ensuring from ExistsToCount to Ensuring[ExistsToCount]

Ungrouped