Package org.apache.sedona.core.spatialPartitioning

Class KDB

java.lang.Object

org.apache.sedona.core.spatialPartitioning.PartitioningUtils

org.apache.sedona.core.spatialPartitioning.KDB

All Implemented Interfaces:

Serializable

public class KDB
extends PartitioningUtils
implements Serializable

see https://en.wikipedia.org/wiki/K-D-B-tree

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	KDB.Visitor

Constructor Summary

Constructors

Constructor	Description
KDB(int maxItemsPerNode, int maxLevels, org.locationtech.jts.geom.Envelope extent)

Method Summary

Modifier and Type	Method	Description
void	assignLeafIds()
void	dropElements()
List<org.locationtech.jts.geom.Envelope>	fetchLeafZones()
List<KDB>	findLeafNodes(org.locationtech.jts.geom.Envelope envelope)
org.locationtech.jts.geom.Envelope	getExtent()
int	getItemCount()
Set<Integer>	getKeys(org.locationtech.jts.geom.Geometry geometry)
int	getLeafId()
void	insert(org.locationtech.jts.geom.Envelope envelope)
boolean	isLeaf()
Iterator<scala.Tuple2<Integer,org.locationtech.jts.geom.Geometry>>	placeObject(org.locationtech.jts.geom.Geometry geometry)
void	traverse(KDB.Visitor visitor)	Traverses the tree top-down breadth-first and calls the visitor for each node.

Methods inherited from class org.apache.sedona.core.spatialPartitioning.PartitioningUtils

getPartitioner, getPartitioner

Methods inherited from class java.lang.Object

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

Constructor Detail

KDB

public KDB(int maxItemsPerNode,
           int maxLevels,
           org.locationtech.jts.geom.Envelope extent)

Method Detail

getItemCount

public int getItemCount()

isLeaf

public boolean isLeaf()

getLeafId

public int getLeafId()

getExtent

public org.locationtech.jts.geom.Envelope getExtent()

insert

public void insert(org.locationtech.jts.geom.Envelope envelope)

dropElements

public void dropElements()

findLeafNodes

public List<KDB> findLeafNodes(org.locationtech.jts.geom.Envelope envelope)

traverse

public void traverse(KDB.Visitor visitor)

Traverses the tree top-down breadth-first and calls the visitor for each node. Stops traversing if a call to Visitor.visit returns false.

assignLeafIds

public void assignLeafIds()

placeObject

public Iterator<scala.Tuple2<Integer,org.locationtech.jts.geom.Geometry>> placeObject(org.locationtech.jts.geom.Geometry geometry)

Specified by:

placeObject in class PartitioningUtils

getKeys

public Set<Integer> getKeys(org.locationtech.jts.geom.Geometry geometry)

Specified by:

getKeys in class PartitioningUtils

fetchLeafZones

public List<org.locationtech.jts.geom.Envelope> fetchLeafZones()

Specified by:

fetchLeafZones in class PartitioningUtils