mobios.index
Class VPLeafNode

java.lang.Object
  mobios.index.VPLeafNode

All Implemented Interfaces:

Externalizable, Serializable

public class VPLeafNode
extends Object

A VPLeafNode is a LeafNode in a VPIndex.

Author:

Rui Mao, Willard

See Also:

Serialized Form

Constructor Summary

VPLeafNode()

VPLeafNode(IndexObject[] pivots, IndexObject[] children, int size, double[][] distance, double[][] pathDistance)
Main constructor.

Method Summary

double[]	getDataPointPathDistance(int childIndex)
double[]	getDataPointPivotDistance(int childIndex)
void	readExternal(ObjectInput in)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

VPLeafNode

public VPLeafNode()

VPLeafNode

public VPLeafNode(IndexObject[] pivots,
                  IndexObject[] children,
                  int size,
                  double[][] distance,
                  double[][] pathDistance)

Main constructor.

Parameters:

pivots - an array of @IndexObjects comprising the pivots of this node.

children - an array of @IndexObjects comprising the children of this node.

size - the size of this leaf node.

distance - distances from each distinct data point (row) to each pivot

pathDistance - distances from each distinct data point (row) to each pivot(column) on the path from the root to this node.

Method Detail

getDataPointPivotDistance

public double[] getDataPointPivotDistance(int childIndex)

Parameters:

childIndex -

Returns:

the distances from a child to all the pivots.

getDataPointPathDistance

public double[] getDataPointPathDistance(int childIndex)

Parameters:

childIndex -

Returns:

the path distance list, consisting of the distances from a child to pivots on the path from the root to the node, can be of lenght 0, but can not be null.

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException