Packages

  • package root
    Definition Classes
    root
  • package h8io
    Definition Classes
    root
  • package stages
    Definition Classes
    h8io
  • package base

    Type aliases used throughout the lib module for describing stage transformations.

    Type aliases used throughout the lib module for describing stage transformations.

    // A decorator is a stage itself: it wraps a Stage[I, O, E] and is one:
val myDecorator: Decorator[String, Int, Nothing] = CompleteIfNone(stage)

// A decoration is the function building it; an alteration is the same with the types free to change:
val myDecoration: Decoration[String, Int, Nothing] = CompleteIfNone(_)
val myAlteration: Alteration[Stage[String, Int, Nothing], Stage[String, Option[Int], Nothing]] = Lift(_)
    Definition Classes
    stages
  • package cats
    Definition Classes
    stages
  • package cycles
    Definition Classes
    stages
  • package operators
    Definition Classes
    stages
  • package projections
    Definition Classes
    stages
  • package std
    Definition Classes
    stages
  • Evolution
  • Stage
  • Status
  • Yield

sealed trait Status[+E] extends AnyRef

The execution status produced by a Stage.

A Status travels alongside the output (or absence of output) in a Yield and is accumulated as stages are composed. There are two possible states:

  • Status.Success — the stage completed normally and processing may continue.
  • Status.Complete — a unit of work has finished. Passed to Evolution when selecting the next continuation stage; the enclosing cycle operators (Loop, Repeat and the rest of h8io.stages.cycles in the lib module) use it to end the current cycle. When errors is empty this represents clean completion; when errors is non-empty it carries one or more accumulated errors.

Statuses form a monoid under combine, used when merging the results of composed stages: Success is the identity element and Complete accumulates errors on combination.

E

the error type (covariant)

Linear Supertypes
AnyRef, Any
Known Subclasses
Complete, Success
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Abstract Value Members

  1. abstract def combine[_E >: E](next: Status[_E]): Status[_E]

    Combines this status with next, returning the more severe of the two.

    Combines this status with next, returning the more severe of the two.

    Success is the identity element; Complete dominates Success and two Complete values are merged by concatenating their error sequences.

  2. abstract def map[_E](f: (E) ⇒ _E): Status[_E]

    Transforms the error values contained in this status.

    Transforms the error values contained in this status.

    _E

    the resulting error type

    f

    the mapping function applied to each error value

    returns

    a new Status with errors mapped by f

Concrete 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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  5. def clone(): AnyRef
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  6. final def eq(arg0: AnyRef): Boolean
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  9. def hashCode(): Int
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  10. final def isInstanceOf[T0]: Boolean
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  11. final def ne(arg0: AnyRef): Boolean
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  12. final def notify(): Unit
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  13. final def notifyAll(): Unit
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  14. final def synchronized[T0](arg0: ⇒ T0): T0
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  15. def toString(): String
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  16. final def wait(arg0: Long, arg1: Int): Unit
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  17. final def wait(arg0: Long): Unit
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  18. final def wait(): Unit
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Deprecated Value Members

  1. def finalize(): Unit
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    protected[lang]
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    @throws( classOf[java.lang.Throwable] ) @Deprecated
    Deprecated

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