net.sf.joafip.file.service

Class RandomAccessFileReadWriteCache

java.lang.Object

net.sf.joafip.file.service.AbstractRandomAccessFile

net.sf.joafip.file.service.RandomAccessFileReadWriteCache

All Implemented Interfaces:

IRandomAccessFile

@NotStorableClass
public class RandomAccessFileReadWriteCache
extends AbstractRandomAccessFile

Instances of this class support both reading and writing to a random access file, using a read and write cache between IRandomAccessFile delegation
this is a cache proxy for IRandomAccessFile implementation

Author:

luc peuvrier

Field Summary

Fields inherited from class net.sf.joafip.file.service.AbstractRandomAccessFile

HELPER_FILE_UTIL, logger, opened

Constructor Summary

Constructors

Constructor and Description
RandomAccessFileReadWriteCache(IRandomAccessFile randomAccessFile) default constructor initialize to 250 pages of 4Kbyte for test purpose
RandomAccessFileReadWriteCache(IRandomAccessFile randomAccessFile, int pageSize, int maxPage) construction setting the maximum number of pages for read cache and setting the page size
RandomAccessFileReadWriteCache(IRandomAccessFile randomAccessFile, int pageSize, int maxPage, boolean haveReadCache)

Method Summary

Methods

Modifier and Type	Method and Description
void	closeImpl()
void	copy(String fileName) make copy of this file in other file
protected long	currentPositionInFileImpl()
void	deleteIfExistsImpl()
void	deleteIfExistsRenamingImpl()
boolean	differs(String fileName, SortedMap<Integer,Integer> diffMap)
void	flushImpl()
File	getFile()
int	getMaxPage()
List<Long>	getPageSet()
int	getPageSize()
long	lengthImpl()
void	openImpl()
int	readImpl(byte[] data)
protected int	readImpl(byte[] data, int offset, int length)
void	seekImpl(long positionInFile)
void	setLengthImpl(long newSize)
void	writeImpl(byte[] data)
void	writeImpl(byte[] data, int length)
protected void	writeImpl(byte[] data, int offset, int length)

Methods inherited from class net.sf.joafip.file.service.AbstractRandomAccessFile

bitsForValue, close, currentPositionInFile, deleteIfExists, deleteIfExistsRenaming, flush, isClose, isOpen, length, open, read, read, seek, setLength, write, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomAccessFileReadWriteCache

@Fortest
public RandomAccessFileReadWriteCache(IRandomAccessFile randomAccessFile)

default constructor initialize to 250 pages of 4Kbyte
for test purpose

Parameters:

file - the file to use for read/write operations

RandomAccessFileReadWriteCache

public RandomAccessFileReadWriteCache(IRandomAccessFile randomAccessFile,
                              int pageSize,
                              int maxPage)
                               throws FileIOException

construction setting the maximum number of pages for read cache and setting the page size

Parameters:

file - the file to use for read/write operations

pageSize - page size ( number of byte ), must be greater or equals to 1024

maxPage - maximum number of page for read cache

Throws:

FileIOException

RandomAccessFileReadWriteCache

public RandomAccessFileReadWriteCache(IRandomAccessFile randomAccessFile,
                              int pageSize,
                              int maxPage,
                              boolean haveReadCache)
                               throws FileIOException

Throws:

FileIOException

Method Detail

getFile

public File getFile()

openImpl

public void openImpl()
              throws FileIOException

Specified by:

openImpl in class AbstractRandomAccessFile

Throws:

FileIOException

closeImpl

public void closeImpl()
               throws FileIOException

Specified by:

closeImpl in class AbstractRandomAccessFile

Throws:

FileIOException

flushImpl

public void flushImpl()
               throws FileIOException

Specified by:

flushImpl in class AbstractRandomAccessFile

Throws:

FileIOException

deleteIfExistsImpl

public void deleteIfExistsImpl()
                        throws FileIOException

Specified by:

deleteIfExistsImpl in class AbstractRandomAccessFile

Throws:

FileIOException

deleteIfExistsRenamingImpl

public void deleteIfExistsRenamingImpl()
                                throws FileIOException

Specified by:

deleteIfExistsRenamingImpl in class AbstractRandomAccessFile

Throws:

FileIOException

seekImpl

public void seekImpl(long positionInFile)
              throws FileIOException

Specified by:

seekImpl in class AbstractRandomAccessFile

Throws:

FileIOException

currentPositionInFileImpl

protected long currentPositionInFileImpl()
                                  throws FileIOException

Specified by:

currentPositionInFileImpl in class AbstractRandomAccessFile

Throws:

FileIOException

readImpl

public int readImpl(byte[] data)
             throws FileIOException

Specified by:

readImpl in class AbstractRandomAccessFile

Throws:

FileIOException

readImpl

protected int readImpl(byte[] data,
           int offset,
           int length)
                throws FileIOException

Specified by:

readImpl in class AbstractRandomAccessFile

Throws:

FileIOException

writeImpl

public void writeImpl(byte[] data)
               throws FileIOException

Specified by:

writeImpl in class AbstractRandomAccessFile

Throws:

FileIOException

writeImpl

public void writeImpl(byte[] data,
             int length)
               throws FileIOException

Specified by:

writeImpl in class AbstractRandomAccessFile

Throws:

FileIOException

writeImpl

protected void writeImpl(byte[] data,
             int offset,
             int length)
                  throws FileIOException

Specified by:

writeImpl in class AbstractRandomAccessFile

Throws:

FileIOException

lengthImpl

public long lengthImpl()
                throws FileIOException

Specified by:

lengthImpl in class AbstractRandomAccessFile

Throws:

FileIOException

setLengthImpl

public void setLengthImpl(long newSize)
                   throws FileIOException

Specified by:

setLengthImpl in class AbstractRandomAccessFile

Throws:

FileIOException

copy

public void copy(String fileName)
          throws FileIOException

Description copied from interface: IRandomAccessFile

make copy of this file in other file

Parameters:

fileName - the copy file name

Throws:

FileIOException

differs

public boolean differs(String fileName,
              SortedMap<Integer,Integer> diffMap)
                throws FileIOException

Returns:

true if files differs

Throws:

FileIOException

getPageSet

@Fortest
public List<Long> getPageSet()

getMaxPage

@Fortest
public int getMaxPage()

getPageSize

@Fortest
public int getPageSize()