com.ados.hestia.utils.io
Class FileStore

java.lang.Object
  com.ados.hestia.utils.io.FileStore

All Implemented Interfaces:

IStore, Serializable

public class FileStore
extends Object
implements IStore

This realize IStore interface using file to store data.

Version:

$Revision: 1312 $ $Date: 2005-11-09 07:34:17 +0900 $

See Also:

Serialized Form

Field Summary

protected static DateFormat	gFormat
protected static long	gIndex
protected File	m_file
protected String	m_id
protected String	m_repositoryID
protected boolean	m_temporary

Constructor Summary

FileStore(File folder, String repoID, String id, boolean temporary)
Construct.

Method Summary

OutputStream	createStream() Create output stream to write data.
protected void	finalize()
protected void	generateFileName(File folder) Generate name of corresponded file using store repository.
File	getFile() Returns file with content for this store.
String	getID() Returns id of store.
String	getRepositoryID() Return owner repository identification.
long	getSize() Returns size of data at store.
int	hashCode()
InputStream	openSharedStream() Open shared stream to read data.
InputStream	openStream() Open ordinary stream to read data.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, getClass, notify, notifyAll, wait, wait, wait

Field Detail

gIndex

protected static long gIndex

gFormat

protected static DateFormat gFormat

m_file

protected File m_file

m_id

protected String m_id

m_repositoryID

protected String m_repositoryID

m_temporary

protected boolean m_temporary

Constructor Detail

FileStore

public FileStore(File folder,
                 String repoID,
                 String id,
                 boolean temporary)

Construct.

Parameters:

folder. - Base folder where this Store will be exist.

repoID - id of owner repository.

id - store identification across repository.

temporary - indicate temporary or persistent this object.

Method Detail

generateFileName

protected void generateFileName(File folder)

Generate name of corresponded file using store repository. Note! some filesystems has limitation of number of entries at folder. To prevent this collission additional catalog is created.

Parameters:

folder - where FileStore must be allocated.

openStream

public InputStream openStream()
                       throws IOException

Open ordinary stream to read data.

Specified by:

openStream in interface IStore

Returns:

opened stream

Throws:

IOException - if stream can not be opened

openSharedStream

public InputStream openSharedStream()
                             throws IOException

Open shared stream to read data.

Specified by:

openSharedStream in interface IStore

Returns:

opened shared stream

Throws:

IOException - if stream can not be opened

createStream

public OutputStream createStream()
                          throws IOException

Create output stream to write data.

Specified by:

createStream in interface IStore

Returns:

create opened stream

Throws:

IOException - if stream can not be opened

getSize

public long getSize()

Returns size of data at store.

Specified by:

getSize in interface IStore

Returns:

size of data at store

getID

public String getID()

Returns id of store.

Specified by:

getID in interface IStore

Returns:

id of store.

getRepositoryID

public String getRepositoryID()

Return owner repository identification.

Returns:

owner repository identification.

getFile

public File getFile()

Returns file with content for this store.

Returns:

file with content for this store.

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object