Class SeekableReadableChannelOverBlocks

java.lang.Object

org.aksw.commons.util.closeable.AutoCloseableBase

org.aksw.commons.util.closeable.AutoCloseableWithLeakDetectionBase

org.aksw.commons.io.shared.ChannelBase

org.aksw.commons.io.input.ReadableChannelBase<byte[]>

org.aksw.commons.io.input.SeekableReadableChannelBase<byte[]>

org.aksw.commons.io.hadoop.binseach.v2.SeekableReadableChannelOverBlocks

All Implemented Interfaces:

Closeable, AutoCloseable, Cloneable, Channel, HasArrayOps<byte[]>, HasPosition, ReadableChannel<byte[]>, ReadableSource<byte[]>, SeekableReadableChannel<byte[]>

public class SeekableReadableChannelOverBlocks
extends SeekableReadableChannelBase<byte[]>

Field Summary

Fields

Modifier and Type	Field	Description
protected NavigableMap<Long,Block>	blockIdToBlock
protected BlockSource	blockSource
protected BlockSourceChannel	channel
protected Block	currentBlock
protected long	currentBlockId
protected long	currentBlockLogicalOffset
protected long	currentLogicalPos
protected long	firstBlockId
protected com.github.benmanes.caffeine.cache.Cache<Long,Block>	globalCache
protected NavigableMap<Long,Long>	logicalPosToBlockId

Fields inherited from class org.aksw.commons.util.closeable.AutoCloseableWithLeakDetectionBase

instantiationStackTrace

Fields inherited from class org.aksw.commons.util.closeable.AutoCloseableBase

closeStackTrace, enableCloseStackTrace, isClosed

Constructor Summary

Constructors

Constructor	Description
SeekableReadableChannelOverBlocks(BlockSource blockSource, long firstBlockId, com.github.benmanes.caffeine.cache.Cache<Long,Block> globalCache)

Method Summary

Modifier and Type	Method	Description
SeekableReadableChannel<byte[]>	cloneObject()
protected void	closeActual()
protected void	ensureCurrentBlock()
ArrayOps<byte[]>	getArrayOps()
Collection<Block>	getKnownBlocks()
protected Block	getOrLoadBlock(long blockId, long logicalBlockOffset)
long	getStartingBlockSize()
protected boolean	isPosValidInBlock()
static Block	loadBlock(BlockSource blockSource, BlockSourceChannel channel, long thisBlockId)
long	position()
void	position(long pos)
int	read(byte[] array, int position, int length)

Methods inherited from class ChannelBase

isOpen

Methods inherited from class org.aksw.commons.util.closeable.AutoCloseableWithLeakDetectionBase

finalize, getInstantiationStackTrace

Methods inherited from class org.aksw.commons.util.closeable.AutoCloseableBase

close, ensureOpen, throwClosedException

Methods inherited from class Object

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

Methods inherited from interface Channel

close, isOpen

Methods inherited from interface ReadableSource

readRaw

Field Details

blockSource

protected BlockSource blockSource

channel

protected BlockSourceChannel channel

firstBlockId

protected long firstBlockId

currentBlockLogicalOffset

protected long currentBlockLogicalOffset

currentBlock

protected Block currentBlock

currentBlockId

protected long currentBlockId

currentLogicalPos

protected long currentLogicalPos

globalCache

protected com.github.benmanes.caffeine.cache.Cache<Long,Block> globalCache

blockIdToBlock

protected NavigableMap<Long,Block> blockIdToBlock

logicalPosToBlockId

protected NavigableMap<Long,Long> logicalPosToBlockId

Constructor Details

SeekableReadableChannelOverBlocks

public SeekableReadableChannelOverBlocks(BlockSource blockSource,
 long firstBlockId,
 com.github.benmanes.caffeine.cache.Cache<Long,Block> globalCache)

Parameters:

blockSource -

globalCache -

channel - The initial channel positioned at the beginning of a block.

Method Details

getKnownBlocks

public Collection<Block> getKnownBlocks()

cloneObject

public SeekableReadableChannel<byte[]> cloneObject()

isPosValidInBlock

protected boolean isPosValidInBlock()

ensureCurrentBlock

protected void ensureCurrentBlock()

getStartingBlockSize

public long getStartingBlockSize()

getOrLoadBlock

protected Block getOrLoadBlock(long blockId,
 long logicalBlockOffset)

read

public int read(byte[] array,
 int position,
 int length)
         throws IOException

Throws:

IOException

getArrayOps

public ArrayOps<byte[]> getArrayOps()

position

public long position()
              throws IOException

Throws:

IOException

closeActual

protected void closeActual()
                    throws Exception

Overrides:

closeActual in class org.aksw.commons.util.closeable.AutoCloseableBase

Throws:

Exception

position

public void position(long pos)
              throws IOException

Throws:

IOException

loadBlock

public static Block loadBlock(BlockSource blockSource,
 BlockSourceChannel channel,
 long thisBlockId)
                       throws IOException

Throws:

IOException