wt.util
Class TempFileOutputStream

java.lang.Object
  java.io.OutputStream
      wt.util.TempFileOutputStream

public class TempFileOutputStream

extends OutputStream

This class is designed to be used much like a ByteArrayOutputStream, the primary difference being that output is written to a temporary file as oppose to consuming memory with a byte array.

Note: The dispose method should be called to delete the temporary file and free all related resources when no longer needed.

Supported API: true
Extendable: false

Field Summary

private static int	bufSiz
private static boolean	DEBUG
(package private) File	f
(package private) int	length
(package private) RandomAccessFile	raf
private static String	TEMPDIR
private static String	versionID

Constructor Summary

TempFileOutputStream()
Construct a new TempFileOutputStream object.

TempFileOutputStream(int buffer_size)
Construct a new TempFileOutputStream object specifying the write buffer size.

Method Summary

void	dispose() Dispose of resources associated with this TempFileOutputStream.
protected void	finialize() finialize this object, cleans up temp file resources if dispose is never called.
private static int	getBufSiz()
int	getLength() Get the size of the temporary file.
static void	main(String[] args) Test driver (main) Supported API: true
private void	readInputFile(String file_name, TempFileOutputStream tf)
int	size() Get the size of the temporary file.
void	write(byte[] b) Writes b.length bytes to this TempFileOutputStream.
void	write(byte[] b, int off, int len) Write data to this TempFileOutputStream.
void	write(int b) Write data to this TempFileOutputStream.
void	writeTo(OutputStream os) Write temp file data to some OutputStream.

Methods inherited from class java.io.OutputStream

close, flush

Methods inherited from class java.lang.Object

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

Field Detail

f

File f

raf

RandomAccessFile raf

length

int length

versionID

private static final String versionID

See Also:

Constant Field Values

TEMPDIR

private static final String TEMPDIR

DEBUG

private static final boolean DEBUG

bufSiz

private static int bufSiz

Constructor Detail

TempFileOutputStream

public TempFileOutputStream()
                     throws IOException

Construct a new TempFileOutputStream object.

Supported API: true

Throws:

IOException - If unable to open the temporary file.

TempFileOutputStream

public TempFileOutputStream(int buffer_size)
                     throws IOException

Construct a new TempFileOutputStream object specifying the write buffer size.

Supported API: true

Parameters:

buffer_size -

Throws:

IOException - If unable to open the temporary file.

Method Detail

size

public int size()

Get the size of the temporary file.

Supported API: true

Returns:

the size of the temporary file

getLength

public int getLength()

Get the size of the temporary file.

Supported API: true

Returns:

the size of the temporary file

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Write data to this TempFileOutputStream.

Supported API: true

Parameters:

b - a byte array of data to be written to temporary file

off - offset into the byte array

len - amout of data to be written

Throws:

IOException - if a write error occurs.

write

public void write(int b)
           throws IOException

Write data to this TempFileOutputStream.

Supported API: true

Parameters:

b - a byte array of data to be written to temporary file

Throws:

IOException - if a write error occurs.

write

public void write(byte[] b)
           throws IOException

Writes b.length bytes to this TempFileOutputStream.

Supported API: true

Parameters:

b - a byte array of data to be written to temporary file

Throws:

IOException - if a write error occurs.

writeTo

public void writeTo(OutputStream os)
             throws IOException

Write temp file data to some OutputStream.

Supported API: true

Parameters:

os - OutputStream which is to recievie the temp files contents

Throws:

IOException - if a read or write error errors.

dispose

public void dispose()

Dispose of resources associated with this TempFileOutputStream. The temporary file is closed and deleted.

Supported API: true

finialize

protected void finialize()
                  throws Throwable

finialize this object, cleans up temp file resources if dispose is never called.

Throws:

Throwable

getBufSiz

private static int getBufSiz()

readInputFile

private void readInputFile(String file_name,
                           TempFileOutputStream tf)
                    throws Exception

Throws:

Exception

main

public static void main(String[] args)

Test driver (main)

Supported API: true