oracle.spatial.spark.vector.index.quadtree

Class QuadTreePartitioning<T>

java.lang.Object

oracle.spatial.spark.vector.index.quadtree.QuadTreePartitioning<T>

Type Parameters:

T -

All Implemented Interfaces:

java.io.Serializable, SpatialPartitioning<T>

public class QuadTreePartitioning<T>
extends java.lang.Object
implements java.io.Serializable, SpatialPartitioning<T>

An implementation of SpatialPartitioning that uses a QuadTree to partition an existing spatial RDD

Author:

hsaucedo

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
QuadTreePartitioning(JavaSparkContext sc, SpatialJavaRDD<T> rdd, QuadTreeConfiguration quadTreConf) Creates a new instance and partitions the given RDD using the given configuration

Method Summary

Modifier and Type	Method and Description
SpatialPartitioner	createPartitioner(java.util.List<SpatialPartition> partitions) Creates a SpatialPartitioner based on the given spatial partitions
SpatialJavaPairRDD<PartitionKey,T>	getPartitionedRDD() Gets the current spatially partitioned spatial RDD
SpatialPartitioner	getPartitioner() Gets the SpatialPartitioner instance used to generated the partitioned RDD

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QuadTreePartitioning

public QuadTreePartitioning(JavaSparkContext sc,
                            SpatialJavaRDD<T> rdd,
                            QuadTreeConfiguration quadTreConf)

Creates a new instance and partitions the given RDD using the given configuration

Parameters:

sc - an existing SparkContext

rdd - a spatial RDD to be spatially partitioned

quadTreConf - a configuration containing the options for partitioning

Method Detail

createPartitioner

public SpatialPartitioner createPartitioner(java.util.List<SpatialPartition> partitions)

Description copied from interface: SpatialPartitioning

Creates a SpatialPartitioner based on the given spatial partitions

Specified by:

createPartitioner in interface SpatialPartitioning<T>

Returns:

getPartitionedRDD

public SpatialJavaPairRDD<PartitionKey,T> getPartitionedRDD()

Description copied from interface: SpatialPartitioning

Gets the current spatially partitioned spatial RDD

Specified by:

getPartitionedRDD in interface SpatialPartitioning<T>

Returns:

getPartitioner

public SpatialPartitioner getPartitioner()

Description copied from interface: SpatialPartitioning

Gets the SpatialPartitioner instance used to generated the partitioned RDD

Specified by:

getPartitioner in interface SpatialPartitioning<T>

Returns: