org.tranche.streams
Class WrappedOutputStream

java.lang.Object
  java.io.OutputStream
      org.tranche.streams.WrappedOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class WrappedOutputStream
extends java.io.OutputStream

A wrapper class that lets the AddFielTool upload data on-the-fly without requiring temporary files when downloading. This greatly speeds up uploads and significantly reduces disk access times.

Constructor Summary

WrappedOutputStream(java.io.OutputStream out, BigHashMaker bhm)
Creates a wrapped output stream that will automatically create an appropriate BigHash from the bytes streamed through it.

WrappedOutputStream(java.io.OutputStream out, BigHashMaker bhm, java.lang.String algorithm, java.security.PrivateKey key)

Method Summary

void	close() Closes the wrapped OutputStream.
void	flush() Flushes any bytes being buffered.
byte[]	getSignatureBytes() Returns the appropriate bytes to represent a signature for this file.
void	write(byte[] b) Writes a complete buffer of bytes.
void	write(byte[] buf, int off, int len) Writes using a buffer and respecting offset and length.
void	write(int b) Writes a single byte out a time.

Methods inherited from class java.lang.Object

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

Constructor Detail

WrappedOutputStream

public WrappedOutputStream(java.io.OutputStream out,
                           BigHashMaker bhm)

Creates a wrapped output stream that will automatically create an appropriate BigHash from the bytes streamed through it.

Parameters:

out - The OutputStream to write bytes to. This wrapper will pass all bytes.

bhm - The BigHashMaker that will be updated as bytes are written to this class.

WrappedOutputStream

public WrappedOutputStream(java.io.OutputStream out,
                           BigHashMaker bhm,
                           java.lang.String algorithm,
                           java.security.PrivateKey key)

Parameters:

out -

bhm -

algorithm -

key -

Method Detail

write

public void write(byte[] buf,
                  int off,
                  int len)
           throws java.io.IOException

Writes using a buffer and respecting offset and length.

Overrides:

write in class java.io.OutputStream

Parameters:

buf -

off -

len -

Throws:

java.io.IOException

write

public void write(byte[] b)
           throws java.io.IOException

Writes a complete buffer of bytes.

Overrides:

write in class java.io.OutputStream

Parameters:

b -

Throws:

java.io.IOException

write

public void write(int b)
           throws java.io.IOException

Writes a single byte out a time. Not recommended for speed.

Specified by:

write in class java.io.OutputStream

Parameters:

b -

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Flushes any bytes being buffered. This class doesn't not buffer bytes from the wrapped OutputStream.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Closes the wrapped OutputStream.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

getSignatureBytes

public byte[] getSignatureBytes()

Returns the appropriate bytes to represent a signature for this file.

Returns:

The appropriate bytes to represent a signature for this file.