org.abstracthorizon.mercury.common.io
Class TempStorage

java.lang.Object
  org.abstracthorizon.mercury.common.io.TempStorage

public class TempStorage
extends Object

This is temporary storage. It stores first defined number of bytes in memory and if more are written then it creates a temporary file and continues to write to the file

Author:

Daniel Sendula

Nested Class Summary

protected class

TempStorage.OutputStreamImpl Output stream implementation

Field Summary

protected ByteArrayOutputStream	buffer Buffer array output stream
protected OutputStream	defaultOutputStream Default output stream
protected File	file Temporary file
static int	MAX_MEMORY Default maximum number of bytes to be stored in memory
protected int	maxMemory Number of bytes to be stored in memory
protected OutputStream	os Output stream
protected String	prefix Prefix
protected int	size Size
protected String	suffix Suffix

Constructor Summary

TempStorage()
Constructor

TempStorage(String prefix, String suffix)
Constructor

TempStorage(String prefix, String suffix, int maxMemory)
Constructor

Method Summary

void	clear() Clears storage for new use
File	getFile() Returns temporary file (or null)
InputStream	getInputStream() Returns input stream (file or memory buffer)
OutputStream	getOutputStream() Returns default output stream
int	getSize() Returns size of storage

Methods inherited from class java.lang.Object

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

Field Detail

MAX_MEMORY

public static final int MAX_MEMORY

Default maximum number of bytes to be stored in memory

See Also:

Constant Field Values

maxMemory

protected int maxMemory

Number of bytes to be stored in memory

file

protected File file

Temporary file

defaultOutputStream

protected OutputStream defaultOutputStream

Default output stream

os

protected OutputStream os

Output stream

buffer

protected ByteArrayOutputStream buffer

Buffer array output stream

size

protected int size

Size

prefix

protected String prefix

Prefix

suffix

protected String suffix

Suffix

Constructor Detail

TempStorage

public TempStorage()

Constructor

TempStorage

public TempStorage(String prefix,
                   String suffix)

Constructor

Parameters:

prefix - file prefix

suffix - file suffix

TempStorage

public TempStorage(String prefix,
                   String suffix,
                   int maxMemory)

Constructor

Parameters:

prefix - prefix

suffix - suffix

maxMemory - maximum number of bytes

Method Detail

getFile

public File getFile()

Returns temporary file (or null)

Returns:

temporary file (or null)

getSize

public int getSize()

Returns size of storage

Returns:

size of storage

getOutputStream

public OutputStream getOutputStream()

Returns default output stream

Returns:

default output stream

getInputStream

public InputStream getInputStream()
                           throws IOException

Returns input stream (file or memory buffer)

Returns:

input stream (file or memory buffer)

Throws:

IOException

clear

public void clear()
           throws IOException

Clears storage for new use

Throws:

IOException