Packages

t

org.apache.flinkx.api.function

WindowFunction

trait WindowFunction[IN, OUT, KEY, W <: Window] extends Function with Serializable

Base interface for functions that are evaluated over keyed (grouped) windows.

IN

The type of the input value.

OUT

The type of the output value.

KEY

The type of the key.

Annotations
@Public()
Linear Supertypes
Function, Serializable, AnyRef, Any
Known Subclasses
RichWindowFunction
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Inherited
  1. WindowFunction
  2. Function
  3. Serializable
  4. AnyRef
  5. Any
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Visibility
  1. Public
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Abstract Value Members

  1. abstract def apply(key: KEY, window: W, input: Iterable[IN], out: Collector[OUT]): Unit

    Evaluates the window and outputs none or several elements.

    Evaluates the window and outputs none or several elements.

    key

    The key for which this window is evaluated.

    window

    The window that is being evaluated.

    input

    The elements in the window being evaluated.

    out

    A collector for emitting elements.

    Exceptions thrown

    Exception The function may throw exceptions to fail the program and trigger recovery.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  9. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  10. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  11. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  13. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  14. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  15. def toString(): String
    Definition Classes
    AnyRef → Any
  16. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  17. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  18. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Deprecated Value Members

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

Inherited from Function

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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