Packages

trait FeatureReducer extends SerializableState

Client-side reduce for the results of a scan. Must have a zero-arg constructor to allow re-creation from a serialized form.

Reducers are encouraged to also allow direct instantiation via an alternate constructor, as serialization is generally only used for map/reduce jobs. Similarly, state is encouraged to be lazily evaluated.

Linear Supertypes
SerializableState, AnyRef, Any
Known Subclasses
DeltaReducer, StatsReducer, LocalTransformReducer
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Inherited
  1. FeatureReducer
  2. SerializableState
  3. AnyRef
  4. Any
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Visibility
  1. Public
  2. All

Abstract Value Members

  1. abstract def apply(features: CloseableIterator[SimpleFeature]): CloseableIterator[SimpleFeature]

    Reduce the results of a scan

    Reduce the results of a scan

    features

    features

  2. abstract def init(state: Map[String, String]): Unit

    Initialize an instance after deserialization

    Initialize an instance after deserialization

    state

    state

    Definition Classes
    SerializableState
  3. abstract def state: Map[String, String]

    The state used to serialize this instance

    The state used to serialize this instance

    Definition Classes
    SerializableState

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
    FeatureReducer → 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 SerializableState

Inherited from AnyRef

Inherited from Any

Ungrouped