net.obsearch.pivots.dummy
Class IncrementalFixedPivotSelector

java.lang.Object
  net.obsearch.pivots.dummy.IncrementalFixedPivotSelector

All Implemented Interfaces:

IncrementalPivotSelector

public class IncrementalFixedPivotSelector
extends Object
implements IncrementalPivotSelector

IncrementalFixedPivotSelector

Author:

Arnoldo Jose Muller Molina

Field Summary

static long[]	def Pre-computed pivot definitions
static long[]	lev
static long[][]	levLevel
static long[]	levScalab
static long[]	mtd
static long[][]	mtdLevel
static long[]	ted
static long[][]	tedLevel

Constructor Summary

IncrementalFixedPivotSelector()

IncrementalFixedPivotSelector(long[] ids)

IncrementalFixedPivotSelector(long[][] ids)

Method Summary

PivotResult	generatePivots(int pivotCount, Index index) Generates pivots from all the elements found in the DB.
PivotResult	generatePivots(int pivotCount, cern.colt.list.LongArrayList elements, Index index) Generates pivots from the elements (object ids) given in the array elements.

Methods inherited from class java.lang.Object

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

Field Detail

def

public static long[] def

Pre-computed pivot definitions

levScalab

public static long[] levScalab

ted

public static long[] ted

tedLevel

public static long[][] tedLevel

lev

public static long[] lev

levLevel

public static long[][] levLevel

mtd

public static long[] mtd

mtdLevel

public static long[][] mtdLevel

Constructor Detail

IncrementalFixedPivotSelector

public IncrementalFixedPivotSelector()

IncrementalFixedPivotSelector

public IncrementalFixedPivotSelector(long[] ids)

IncrementalFixedPivotSelector

public IncrementalFixedPivotSelector(long[][] ids)

Method Detail

generatePivots

public PivotResult generatePivots(int pivotCount,
                                  Index index)
                           throws OBException,
                                  IllegalAccessException,
                                  InstantiationException,
                                  OBStorageException,
                                  PivotsUnavailableException

Description copied from interface: IncrementalPivotSelector

Generates pivots from all the elements found in the DB.

Specified by:

generatePivots in interface IncrementalPivotSelector

Parameters:

pivotCount - The # of pivots that will be generated.

Returns:

A list of the ids of the pivots.

Throws:

OBStorageException - If something goes wrong with the DB

OBException - User generated exception

IllegalAccessException - If there is a problem when instantiating objects O

InstantiationException - If there is a problem when instantiating objects O

PivotsUnavailableException - If not all the pivots requested were found.

generatePivots

public PivotResult generatePivots(int pivotCount,
                                  cern.colt.list.LongArrayList elements,
                                  Index index)
                           throws OBException,
                                  IllegalAccessException,
                                  InstantiationException,
                                  OBStorageException,
                                  PivotsUnavailableException

Description copied from interface: IncrementalPivotSelector

Generates pivots from the elements (object ids) given in the array elements. Generates pivotsCount pivots.

Specified by:

generatePivots in interface IncrementalPivotSelector

Returns:

A list of the ids of the pivots.

Throws:

OBException

IllegalAccessException

InstantiationException

OBStorageException

PivotsUnavailableException