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
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. FeatureReducer
  2. SerializableState
  3. AnyRef
  4. Any
  1. Hide All
  2. Show All
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. def toString(): String
    Definition Classes
    FeatureReducer → AnyRef → Any