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Java Source Code / Java Documentation » Search Engine » Jofti » com.jofti.store 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.jofti.store.FileManager

FileManager
class FileManager (Code)
Manages files set up in Jofti. This manager sets up the files, allocates space in the files and keeps track of the current poaitions in each file.

This is based on some of the ideas found in HOWL.


author:
   xenephon


Field Summary
protected  StringOVERFLOW_DIRECTORY
    
 intblockSize
    
 FileStorecurrentStore
    
protected  Stringextension
    
protected  StringfileName
    
 long[]filePositions
     array of positions for each store.
 FileStore[]fileSet
     set of FileStore objects associated with the physical files.
protected  StringlogFileDirectory
    
 intpayloadSize
    
protected  LinkedBlockingQueueremovedBlockQueue
    
 long[]unallocatedBlocks
     array of unalloctaed blocks fro each store.

Constructor Summary
 FileManager()
    

Method Summary
public  FilePositionHolder[]allocateBlocks(FilePositionHolder[] blocks, int size)
     Allocates an array of FilePositionHolder objects which encompasses the locations of the page data across one or more files.
 voidclose()
     close the log files.
 FileStoregetFileStore(int id)
    
public  FilePositionHoldergetNextPosition()
    
 voidinit(int blockSize, String directory, String fileName, long size, int maxFiles)
    
 voidopen()
     open pool of FileStore(s).
public  voidremovePosition(FilePositionHolder holder)
    
public synchronized  voidreset()
    

Field Detail
OVERFLOW_DIRECTORY
protected String OVERFLOW_DIRECTORY(Code)
keys into properties



blockSize
int blockSize(Code)



currentStore
FileStore currentStore(Code)
current store



extension
protected String extension(Code)



fileName
protected String fileName(Code)



filePositions
long[] filePositions(Code)
array of positions for each store.



fileSet
FileStore[] fileSet(Code)
set of FileStore objects associated with the physical files.
See Also:   FileManager.open()



logFileDirectory
protected String logFileDirectory(Code)



payloadSize
int payloadSize(Code)



removedBlockQueue
protected LinkedBlockingQueue removedBlockQueue(Code)



unallocatedBlocks
long[] unallocatedBlocks(Code)
array of unalloctaed blocks fro each store.
See Also:   FileManager.open()




Constructor Detail
FileManager
FileManager()(Code)




Method Detail
allocateBlocks
public FilePositionHolder[] allocateBlocks(FilePositionHolder[] blocks, int size) throws JoftiException(Code)
Allocates an array of FilePositionHolder objects which encompasses the locations of the page data across one or more files.


Parameters:
  blocks - - existing file positions (if any)
Parameters:
  size - - total number of bytes to store
throws:
  JoftiException -




close
void close() throws IOException, InterruptedException(Code)
close the log files.
throws:
  IOException - If FileChannel.close() encounters an error.
See Also:   java.nio.channels.FileChannel.close



getFileStore
FileStore getFileStore(int id)(Code)



getNextPosition
public FilePositionHolder getNextPosition() throws JoftiException(Code)



init
void init(int blockSize, String directory, String fileName, long size, int maxFiles) throws JoftiException(Code)



open
void open() throws JoftiException, IOException, FileNotFoundException, JoftiException(Code)
open pool of FileStore(s).
throws:
  FileNotFoundException -
throws:
  LogConfigurationException -
throws:
  IOException -
throws:
  InvalidFileSetException -



removePosition
public void removePosition(FilePositionHolder holder) throws JoftiException(Code)



reset
public synchronized void reset()(Code)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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