net.dontdrinkandroot.cache.impl.disk.indexed.storage
Class IndexFile

java.lang.Object
  net.dontdrinkandroot.cache.impl.disk.indexed.storage.IndexFile

public class IndexFile
extends Object

Author:

Philip W. Sorst

Field Summary

static float

GOLDEN_RATIO

Constructor Summary

IndexFile(File file)

Method Summary

void	close() Closes the underlying random access file.
void	delete(IndexData indexData) Deletes the block of the given metaData.
void	delete(int blockNum) Deletes the given block.
int	getNumAllocated() Gets the number of allocated blocks.
Collection<IndexData>	initialize()
long	length() Returns the length of the underlying random access file.
IndexData	write(IndexData indexData)

Methods inherited from class java.lang.Object

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

Field Detail

GOLDEN_RATIO

public static float GOLDEN_RATIO

Constructor Detail

IndexFile

public IndexFile(File file)
          throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

close

public void close()
           throws IOException

Closes the underlying random access file.

Throws:

IOException

delete

public void delete(IndexData indexData)
            throws IOException

Deletes the block of the given metaData.

Throws:

IOException

delete

public void delete(int blockNum)
            throws IOException

Deletes the given block.

Throws:

IOException

getNumAllocated

public int getNumAllocated()

Gets the number of allocated blocks.

initialize

public Collection<IndexData> initialize()
                                 throws IOException

Throws:

IOException

length

public long length()
            throws IOException

Returns the length of the underlying random access file.

Throws:

IOException

write

public IndexData write(IndexData indexData)
                throws IOException

Throws:

IOException