QueryProcessor.Utils.RegIdx
Class RegionQuery

java.lang.Object
  QueryProcessor.Utils.RegIdx.RegionQuery

Direct Known Subclasses:

WindsurfRegionQueryMtree

public abstract class RegionQuery
extends java.lang.Object

Abstract class representing a region query.

Field Summary

protected Region

query The query region

Constructor Summary

RegionQuery(Region query)
Basic constructor.

Method Summary

abstract int	getDistances() Returns the number of distance computations performed by the region index.
abstract java.util.Vector<ScoredResultImage>	kNN(int k) Performs a k-nn query.
abstract java.util.Vector<ScoredResultImage>	range(double r) Performs a range query.
abstract boolean	resetDistances() Resets the number of distance computations performed by the region index.

Methods inherited from class java.lang.Object

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

Field Detail

query

protected Region query

The query region

Constructor Detail

RegionQuery

public RegionQuery(Region query)

Basic constructor.

Parameters:

query - The query region.

Method Detail

kNN

public abstract java.util.Vector<ScoredResultImage> kNN(int k)

Performs a k-nn query.

Parameters:

k - Number of requested results.

Returns:

Vector of query results.

range

public abstract java.util.Vector<ScoredResultImage> range(double r)

Performs a range query.

Parameters:

r - Radius of the query.

Returns:

Vector of query results.

resetDistances

public abstract boolean resetDistances()

Resets the number of distance computations performed by the region index.

Returns:

true if the count was successfully reset, false otherwise.

getDistances

public abstract int getDistances()

Returns the number of distance computations performed by the region index.

Returns:

Number of distance computations performed by the region index.