net.obsearch.dimension
Class AbstractDimension

java.lang.Object
  net.obsearch.dimension.AbstractDimension

Direct Known Subclasses:

DimensionByte, DimensionDouble, DimensionFloat, DimensionInt, DimensionLong, DimensionShort

public abstract class AbstractDimension
extends Object

AbstractDimension stores a dimension (the order it is and some abstract primitive value).

Author:

Arnoldo Jose Muller Molina

Constructor Summary

protected

AbstractDimension(int order)

Method Summary

int	getOrder()
protected static long	mapId(long i, cern.colt.list.LongArrayList elements)
static int	max(cern.colt.list.LongArrayList source, Index index) Returns the max # of elements.
static long[]	select(int k, Random r, cern.colt.list.LongArrayList source, Index<OB> index, cern.colt.list.LongArrayList excludes) Selects k random elements from the given source.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractDimension

protected AbstractDimension(int order)

Method Detail

getOrder

public int getOrder()

max

public static int max(cern.colt.list.LongArrayList source,
                      Index index)
               throws OBStorageException

Returns the max # of elements. if source != null then source.size() otherwise index.databaseSize();

Parameters:

source - The source of data (can be null)

index - The underlying index.

Returns:

The max # of elements of source if source != null or of index if source == null.

Throws:

OBStorageException

mapId

protected static long mapId(long i,
                            cern.colt.list.LongArrayList elements)

select

public static long[] select(int k,
                            Random r,
                            cern.colt.list.LongArrayList source,
                            Index<OB> index,
                            cern.colt.list.LongArrayList excludes)
                     throws IllegalIdException,
                            OBException,
                            IllegalAccessException,
                            InstantiationException

Selects k random elements from the given source.

Parameters:

k - number of elements to select

r - Random object used to randomly select objects.

source - The source of item ids.

index - underlying index.

will - not add pivots included in excludes.

minDistance - The min distance required by the objects.

Returns:

The ids of selected objects.

Throws:

IllegalIdException

OBException

IllegalAccessException

InstantiationException