edu.unh.sdb.datasource
Class BlockListCache

java.lang.Object
  edu.unh.sdb.datasource.BlockListCache

public class BlockListCache
extends java.lang.Object

Field Summary

protected int	dimensionality
protected ISBounds	dsSpaceBounds
protected int[]	dsSpaceDimensions
protected ISBounds	iterationSpaceBounds
protected int[]	iterationSpaceDimensions
protected int[]	lowerDSSpaceCoords
protected int[]	lowerIterationSpaceCoords
protected int	numAttributes
protected PhysicalDataSource	theSource
protected int[]	upperDSSpaceCoords
protected int[]	upperIterationSpaceCoords

Constructor Summary

BlockListCache(PhysicalDataSource dataSource, int numCacheBlocks, ISBounds listBlockSize)

Method Summary

long	checkSize(ISBounds bounds)
protected ISBounds[]	getEnumWindow() return the enum window
void	lookup(BasicBlock queryBlock, ISBounds dstBounds, ISBounds userQueryBounds) lookup the cached blocks to see if the the query block is already in cache.
void	lookup(Datum theDatum, IndexSpaceID id)
static void	main(java.lang.String[] args)
protected void	setEnumWindow(ISBounds[] window) set the enum window so that the cache can perform efficient prefetch
protected void	setIterator(RandomBlockIterator iter)

Methods inherited from class java.lang.Object

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

Field Detail

theSource

protected PhysicalDataSource theSource

dimensionality

protected int dimensionality

numAttributes

protected int numAttributes

iterationSpaceBounds

protected ISBounds iterationSpaceBounds

lowerIterationSpaceCoords

protected int[] lowerIterationSpaceCoords

upperIterationSpaceCoords

protected int[] upperIterationSpaceCoords

iterationSpaceDimensions

protected int[] iterationSpaceDimensions

dsSpaceBounds

protected ISBounds dsSpaceBounds

lowerDSSpaceCoords

protected int[] lowerDSSpaceCoords

upperDSSpaceCoords

protected int[] upperDSSpaceCoords

dsSpaceDimensions

protected int[] dsSpaceDimensions

Constructor Detail

BlockListCache

public BlockListCache(PhysicalDataSource dataSource,
                      int numCacheBlocks,
                      ISBounds listBlockSize)

Method Detail

checkSize

public long checkSize(ISBounds bounds)

lookup

public void lookup(BasicBlock queryBlock,
                   ISBounds dstBounds,
                   ISBounds userQueryBounds)

lookup the cached blocks to see if the the query block is already in cache. if not it will get it from the cache block, and get neighbor blocks

lookup

public void lookup(Datum theDatum,
                   IndexSpaceID id)

setEnumWindow

protected void setEnumWindow(ISBounds[] window)

set the enum window so that the cache can perform efficient prefetch

getEnumWindow

protected ISBounds[] getEnumWindow()

return the enum window

setIterator

protected void setIterator(RandomBlockIterator iter)

main

public static void main(java.lang.String[] args)