class UnwrappingAggregateFunction[Input] extends AggregateFunction[ValueWithContext[StringKeyedValue[Input]], AnyRef, AnyRef]
This class unwraps value from input's KeyedValue.
NOTE: it would be much cleaner if we evaluated aggregateBy here. However, FLINK-10250 prevents us from doing this and we *have* to compute it beforehand
When using this class it's important that aggregator, passedType and unwrap must match: unwrap result is of passedType and can be processed by aggregator
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Instance Constructors
- new UnwrappingAggregateFunction(aggregator: Aggregator, passedType: TypingResult, unwrapAggregatedValue: (Input) => AnyRef)
Value Members
- final def !=(arg0: Any): Boolean
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- AnyRef → Any
- final def ##: Int
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- final def ==(arg0: Any): Boolean
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- AnyRef → Any
- def add(wrappedInput: ValueWithContext[StringKeyedValue[Input]], accumulator: AnyRef): AnyRef
- Definition Classes
- UnwrappingAggregateFunction → AggregateFunction
- final def asInstanceOf[T0]: T0
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- def clone(): AnyRef
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- protected[lang]
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- @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
- def createAccumulator(): AnyRef
- Definition Classes
- UnwrappingAggregateFunction → AggregateFunction
- final def eq(arg0: AnyRef): Boolean
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- def equals(arg0: AnyRef): Boolean
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- final def getClass(): Class[_ <: AnyRef]
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- def getResult(accumulator: AnyRef): AnyRef
- Definition Classes
- UnwrappingAggregateFunction → AggregateFunction
- def hashCode(): Int
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- @HotSpotIntrinsicCandidate() @native()
- final def isInstanceOf[T0]: Boolean
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- def merge(a: AnyRef, b: AnyRef): AnyRef
- Definition Classes
- UnwrappingAggregateFunction → AggregateFunction
- final def ne(arg0: AnyRef): Boolean
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- final def synchronized[T0](arg0: => T0): T0
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- final def wait(arg0: Long, arg1: Int): Unit
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- final def wait(arg0: Long): Unit
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Deprecated Value Members
- def finalize(): Unit
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- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
(Since version 9)