com.emc.mongoose.api.model.item

Interface DataItem

All Superinterfaces:

java.lang.AutoCloseable, java.nio.channels.ByteChannel, java.nio.channels.Channel, java.io.Closeable, java.io.Externalizable, Item, java.nio.channels.ReadableByteChannel, java.nio.channels.SeekableByteChannel, java.io.Serializable, java.nio.channels.WritableByteChannel

All Known Implementing Classes:

BasicDataItem

public interface DataItem
extends Item, java.nio.channels.SeekableByteChannel

Created by kurila on 11.07.16.

Field Summary

Fields

Modifier and Type	Field and Description
static double	LOG2

Method Summary

Modifier and Type	Method and Description
void	commitUpdatedRanges(java.util.BitSet[] updatingRangesMask)
DataInput	getDataInput()
static int	getRangeCount(long size)
static long	getRangeOffset(int i)
long	getRangeSize(int rangeIdx)
int	getUpdatedRangesCount()
boolean	isRangeUpdated(int rangeIdx)
boolean	isUpdated()
int	layer()
void	layer(int layerNum)
long	offset()
void	offset(long offset)
int	readAndVerify(java.nio.channels.ReadableByteChannel chanSrc, java.nio.ByteBuffer buff)
void	reset()
void	setDataInput(DataInput dataInput)
void	size(long size)
<D extends DataItem> D	slice(long from, long size)
long	writeToFileChannel(java.nio.channels.FileChannel chanDst, long maxCount)
long	writeToSocketChannel(java.nio.channels.WritableByteChannel chanDst, long maxCount)

Methods inherited from interface com.emc.mongoose.api.model.item.Item

getName, setName, toString

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

Methods inherited from interface java.nio.channels.SeekableByteChannel

position, position, read, size, truncate, write

Methods inherited from interface java.nio.channels.Channel

close, isOpen

Field Detail

LOG2

static final double LOG2

Method Detail

getDataInput

DataInput getDataInput()

setDataInput

void setDataInput(DataInput dataInput)

reset

void reset()

Specified by:

reset in interface Item

layer

int layer()

layer

void layer(int layerNum)

size

void size(long size)

offset

long offset()

offset

void offset(long offset)

slice

<D extends DataItem> D slice(long from,
                             long size)

writeToSocketChannel

long writeToSocketChannel(java.nio.channels.WritableByteChannel chanDst,
                          long maxCount)
                   throws java.io.IOException

Returns:

The number of bytes written, possibly zero

Throws:

java.nio.channels.NonWritableChannelException - If this channel was not opened for writing

java.nio.channels.ClosedChannelException - If this channel is closed

java.nio.channels.AsynchronousCloseException - If another thread closes this channel while the write operation is in progress

java.nio.channels.ClosedByInterruptException - If another thread interrupts the current thread while the write operation is in progress, thereby closing the channel and setting the current thread's interrupt status

java.io.IOException - If some other I/O error occurs

writeToFileChannel

long writeToFileChannel(java.nio.channels.FileChannel chanDst,
                        long maxCount)
                 throws java.io.IOException

Throws:

java.io.IOException

readAndVerify

int readAndVerify(java.nio.channels.ReadableByteChannel chanSrc,
                  java.nio.ByteBuffer buff)
           throws DataSizeException,
                  DataCorruptionException,
                  java.io.IOException

Throws:

DataSizeException

DataCorruptionException

java.io.IOException

getRangeCount

static int getRangeCount(long size)

getRangeOffset

static long getRangeOffset(int i)

getRangeSize

long getRangeSize(int rangeIdx)

isUpdated

boolean isUpdated()

isRangeUpdated

boolean isRangeUpdated(int rangeIdx)

getUpdatedRangesCount

int getUpdatedRangesCount()

commitUpdatedRanges

void commitUpdatedRanges(java.util.BitSet[] updatingRangesMask)