class FlatGridPartitioner extends SpatialPartitioner

The FlatGridPartitioner is used when there is already a set of grids which the data should be partitioned into. It iterates through all the grids to find the grids to place a geometry into. Unless you have very few objects to place, it may make more sense to use the IndexedGridPartitioner. If you do not have a strict requirement to use a specific set of grids, it may make more sense to use another partitioner that generates its own grids from a space-partitioning tree, e.g. the KDBTreePartitioner or the QuadTreePartitioner.

Linear Supertypes
SpatialPartitioner, Partitioner, Serializable, Serializable, AnyRef, Any
Known Subclasses
IndexedGridPartitioner
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Inherited
  1. FlatGridPartitioner
  2. SpatialPartitioner
  3. Partitioner
  4. Serializable
  5. Serializable
  6. AnyRef
  7. Any
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Visibility
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Instance Constructors

  1. new FlatGridPartitioner(grids: List[Envelope])
  2. new FlatGridPartitioner(grids: List[Envelope], preserveUncontainedGeometries: Boolean)
  3. new FlatGridPartitioner(gridType: GridType, grids: List[Envelope])
  4. new FlatGridPartitioner(gridType: GridType, grids: List[Envelope], preserveUncontainedGeometries: Boolean)

Abstract Value Members

  1. abstract def placeObject[T <: Geometry](spatialObject: T): Iterator[(Integer, T)]

    Given a geometry, returns a list of partitions it overlaps.

    Given a geometry, returns a list of partitions it overlaps.

    For points, returns exactly one partition as long as grid type is non-overlapping. For other geometry types or for overlapping grid types, may return multiple partitions.

    Definition Classes
    SpatialPartitioner

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()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(o: Any): Boolean
    Definition Classes
    FlatGridPartitioner → AnyRef → Any
    Annotations
    @Override()
  8. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  10. def getDedupParams(): DedupParams
    Definition Classes
    FlatGridPartitioner → SpatialPartitioner
    Annotations
    @Nullable()
  11. def getGridType(): GridType
    Definition Classes
    SpatialPartitioner
  12. def getGrids(): List[Envelope]
    Definition Classes
    SpatialPartitioner
  13. def getPartition(key: Any): Int
    Definition Classes
    SpatialPartitioner → Partitioner
    Annotations
    @Override()
  14. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  16. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  17. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  18. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  19. def numPartitions(): Int

    Equal and Hilbert partitioning methods have necessary properties to support de-dup.

    Equal and Hilbert partitioning methods have necessary properties to support de-dup. These methods provide non-overlapping partition extents and not require overflow partition as they cover full extent of the RDD. However, legacy SpatialRDD.spatialPartitioning(otherGrids) method doesn't preserve the grid type making it impossible to reliably detect whether partitioning allows efficient de-dup or not.

    TODO Figure out how to remove SpatialRDD.spatialPartitioning(otherGrids) API. Perhaps, make the implementation no-op and fold the logic into JoinQuery, RangeQuery and KNNQuery APIs.

    Definition Classes
    FlatGridPartitioner → Partitioner
    Annotations
    @Override()
  20. def placeObject(spatialObject: Geometry): Iterator[(Integer, Geometry)]
    Annotations
    @Override()
  21. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  22. def toString(): String
    Definition Classes
    AnyRef → Any
  23. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  24. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  25. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from SpatialPartitioner

Inherited from Partitioner

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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