de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.rdknn

Class RdKNNLeafEntry

java.lang.Object

de.lmu.ifi.dbs.elki.index.tree.AbstractLeafEntry

de.lmu.ifi.dbs.elki.index.tree.spatial.SpatialPointLeafEntry

de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.rdknn.RdKNNLeafEntry

All Implemented Interfaces:

FeatureVector<Number>, NumberVector, SpatialComparable, Entry, LeafEntry, RdKNNEntry, SpatialEntry, Externalizable, Serializable

public class RdKNNLeafEntry
extends SpatialPointLeafEntry
implements RdKNNEntry

Represents an entry in a leaf node of an RdKNN-Tree. Additionally to a SpatialLeafEntry a RdKNNLeafEntry holds the knn distance of the underlying data object.

Author:

Elke Achtert

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface de.lmu.ifi.dbs.elki.data.NumberVector

NumberVector.Factory<V extends NumberVector>

Field Summary

Fields

Modifier and Type	Field and Description
private double	knnDistance The knn distance of the underlying data object.
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
RdKNNLeafEntry() Empty constructor for serialization purposes.
RdKNNLeafEntry(DBID id, NumberVector vector, double knnDistance) Constructs a new RDkNNLeafEntry object with the given parameters.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Indicates whether some other object is "equal to" this one.
double	getKnnDistance() Returns the knn distance of this entry.
void	readExternal(ObjectInput in) Calls the super method and reads the knn distance of this entry from the specified input stream.
void	setKnnDistance(double knnDistance) Sets the knn distance of this entry.
void	writeExternal(ObjectOutput out) Calls the super method and writes the knn distance of this entry to the specified stream.

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.spatial.SpatialPointLeafEntry

byteValue, doubleValue, floatValue, getColumnVector, getDimensionality, getMax, getMin, getValue, getValues, intValue, longValue, shortValue

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.AbstractLeafEntry

getDBID, hashCode, isLeafEntry, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.index.tree.Entry

isLeafEntry

Methods inherited from interface de.lmu.ifi.dbs.elki.data.spatial.SpatialComparable

getDimensionality, getMax, getMin

Methods inherited from interface de.lmu.ifi.dbs.elki.data.FeatureVector

toString

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

knnDistance

private double knnDistance

The knn distance of the underlying data object.

Constructor Detail

RdKNNLeafEntry

public RdKNNLeafEntry()

Empty constructor for serialization purposes.

RdKNNLeafEntry

public RdKNNLeafEntry(DBID id,
                      NumberVector vector,
                      double knnDistance)

Constructs a new RDkNNLeafEntry object with the given parameters.

Parameters:

id - the unique id of the underlying data object

vector - the underlying data object

knnDistance - the knn distance of the underlying data object

Method Detail

getKnnDistance

public double getKnnDistance()

Description copied from interface: RdKNNEntry

Returns the knn distance of this entry.

Specified by:

getKnnDistance in interface RdKNNEntry

Returns:

the knn distance of this entry

setKnnDistance

public void setKnnDistance(double knnDistance)

Description copied from interface: RdKNNEntry

Sets the knn distance of this entry.

Specified by:

setKnnDistance in interface RdKNNEntry

Parameters:

knnDistance - the knn distance to be set

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Calls the super method and writes the knn distance of this entry to the specified stream.

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class SpatialPointLeafEntry

Parameters:

out - the stream to write the object to

Throws:

IOException - Includes any I/O exceptions that may occur

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Calls the super method and reads the knn distance of this entry from the specified input stream.

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class SpatialPointLeafEntry

Parameters:

in - the stream to read data from in order to restore the object

Throws:

IOException - if I/O errors occur

ClassNotFoundException - If the class for an object being restored cannot be found.

equals

public boolean equals(Object o)

Indicates whether some other object is "equal to" this one.

Overrides:

equals in class AbstractLeafEntry

Parameters:

o - the object to be tested

Returns:

true, if the super method returns true and o is an RDkNNLeafEntry and has the same knnDistance as this entry.