fr.dyade.aaa.agent
Class ByteArrayMessageOutputStream

java.lang.Object
  extended by java.io.OutputStream
      extended by fr.dyade.aaa.agent.MessageOutputStream
          extended by fr.dyade.aaa.agent.ByteArrayMessageOutputStream
All Implemented Interfaces:
java.io.Closeable, java.io.Flushable

public abstract class ByteArrayMessageOutputStream
extends MessageOutputStream

Class used to write messages into a byte array.

This OutputStream allows the replacement of the underlying stream and the serialisation of object through an internal ObjectOutputStream.

Be careful this OutputStream is not synchronized.


Field Summary
 
Fields inherited from class fr.dyade.aaa.agent.MessageOutputStream
buf, compressedFlows, count, logmon, oos
 
Constructor Summary
ByteArrayMessageOutputStream()
          Creates a new output stream to write data to an internal byte array with default size.
ByteArrayMessageOutputStream(int size)
          Creates a new output stream to write data to an internal byte array with specified size.
 
Method Summary
 void reset()
          Resets this output stream.
 int size()
          Returns the current size of the buffer.
 void write(byte[] b, int off, int len)
          Writes len bytes from the specified byte array starting at offset off to this output stream.
 void write(int b)
          Writes the specified byte to this output stream.
 void writeTo(java.io.OutputStream out)
          Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).
 
Methods inherited from class fr.dyade.aaa.agent.MessageOutputStream
getLogger, write, writeHeader, writeInt, writeMessage, writeMessageHeader, writeShort
 
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
 

Constructor Detail

ByteArrayMessageOutputStream

public ByteArrayMessageOutputStream()
                             throws java.io.IOException
Creates a new output stream to write data to an internal byte array with default size.

Throws:
java.io.IOException - if the internal ObjectOutputStream cannot be correctly initialized.

ByteArrayMessageOutputStream

public ByteArrayMessageOutputStream(int size)
                             throws java.io.IOException
Creates a new output stream to write data to an internal byte array with specified size.

Parameters:
size - the buffer size.
Throws:
java.lang.IllegalArgumentException - if size is less than 0.
java.io.IOException - if the internal ObjectOutputStream cannot be correctly initialized.
Method Detail

write

public final void write(int b)
                 throws java.io.IOException
Writes the specified byte to this output stream.

Specified by:
write in class MessageOutputStream
Parameters:
b - the byte to be written.
Throws:
java.io.IOException - if an I/O error occurs.

write

public final void write(byte[] b,
                        int off,
                        int len)
                 throws java.io.IOException
Writes len bytes from the specified byte array starting at offset off to this output stream.

Specified by:
write in class MessageOutputStream
Parameters:
b - the data.
off - the start offset in the data.
len - the number of bytes to write.
Throws:
java.io.IOException - if an I/O error occurs.

size

public final int size()
Returns the current size of the buffer.

Returns:
the current size of the buffer.

reset

public final void reset()
Resets this output stream.

Set the count field of this output stream to zero, so that all currently accumulated output in the output stream is discarded. The output stream can be used again, reusing the already allocated buffer space.


writeTo

public final void writeTo(java.io.OutputStream out)
                   throws java.io.IOException
Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).

Parameters:
out - the output stream to which to write the data.
Throws:
java.io.IOException - if an I/O error occurs.


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