org.alliance.core.file.blockstorage
Class BlockFile

java.lang.Object
  org.alliance.core.file.blockstorage.BlockFile

public final class BlockFile
extends java.lang.Object

Contains information about an incomplete file. What block is has (and in what order) and what the FileDescriptor is for this file. Created by IntelliJ IDEA. User: maciek Date: 2006-jan-20 Time: 13:04:46

Constructor Summary

BlockFile(FileDescriptor fd, BlockStorage parent)

Method Summary

void	assureOpen()
void	blockCompleted(int blockNumber)
Hash	calculateHash(int blockNumber)
void	close()
static BlockFile	createFrom(BlockStorage parent, java.io.InputStream is)
BlockMask	getBlockMask()
java.util.BitSet	getBlocksInProgress()
int	getBlockSize(int blockNumber)
static int	getBlockSize(int blockNumber, long size)
FileDescriptor	getFd()
int	getHighestCompleteBlock()
static int	getNumberOfBlockForSize(long size)
int	getNumberOfBlocksComplete()
int	getNumberOfBlocksStartedOrComplete()
boolean	isBlockComplete(int blockNumber)
boolean	isBlockStartedOrComplete(int blockNumber)
boolean	isComplete()
boolean	isOpen()
static BlockFile	loadFrom(BlockStorage parent, Hash root)
void	moveToComplete(java.lang.String directory)
void	open()
int	read(int blockNumber, int sliceOffset, java.nio.ByteBuffer buf)
void	save()
void	serializeTo(java.io.OutputStream o)
java.lang.String	toString()
int	write(int blockNumber, int sliceOffset, java.nio.ByteBuffer slice)

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockFile

public BlockFile(FileDescriptor fd,
                 BlockStorage parent)

Method Detail

getNumberOfBlockForSize

public static int getNumberOfBlockForSize(long size)

blockCompleted

public void blockCompleted(int blockNumber)

isBlockComplete

public boolean isBlockComplete(int blockNumber)

getBlocksInProgress

public java.util.BitSet getBlocksInProgress()

getNumberOfBlocksStartedOrComplete

public int getNumberOfBlocksStartedOrComplete()

getNumberOfBlocksComplete

public int getNumberOfBlocksComplete()

isBlockStartedOrComplete

public boolean isBlockStartedOrComplete(int blockNumber)

isComplete

public boolean isComplete()

serializeTo

public void serializeTo(java.io.OutputStream o)
                 throws java.io.IOException

Throws:

java.io.IOException

createFrom

public static BlockFile createFrom(BlockStorage parent,
                                   java.io.InputStream is)
                            throws java.io.IOException

Throws:

java.io.IOException

save

public void save()
          throws java.io.IOException

Throws:

java.io.IOException

loadFrom

public static BlockFile loadFrom(BlockStorage parent,
                                 Hash root)
                          throws java.io.IOException

Throws:

java.io.IOException

getFd

public FileDescriptor getFd()

isOpen

public boolean isOpen()

open

public void open()
          throws java.io.IOException

Throws:

java.io.IOException

assureOpen

public void assureOpen()
                throws java.io.IOException

Throws:

java.io.IOException

write

public int write(int blockNumber,
                 int sliceOffset,
                 java.nio.ByteBuffer slice)
          throws java.io.IOException

Returns:

Number of bytes written, or -1 if the block is complete

Throws:

java.io.IOException

read

public int read(int blockNumber,
                int sliceOffset,
                java.nio.ByteBuffer buf)
         throws java.io.IOException

Throws:

java.io.IOException

calculateHash

public Hash calculateHash(int blockNumber)
                   throws java.io.IOException

Throws:

java.io.IOException

getBlockSize

public int getBlockSize(int blockNumber)

getBlockSize

public static int getBlockSize(int blockNumber,
                               long size)

moveToComplete

public void moveToComplete(java.lang.String directory)
                    throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

getBlockMask

public BlockMask getBlockMask()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getHighestCompleteBlock

public int getHighestCompleteBlock()