Class DataByteArrayOutputStream

java.lang.Object

java.io.OutputStream

org.fusesource.hawtbuf.DataByteArrayOutputStream

All Implemented Interfaces:

Closeable, DataOutput, Flushable, AutoCloseable

public class DataByteArrayOutputStream
extends OutputStream
implements DataOutput

Optimized ByteArrayOutputStream

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	buf
private static final int	DEFAULT_SIZE
protected AbstractVarIntSupport	helper
protected int	pos

Constructor Summary

Constructors

Constructor	Description
DataByteArrayOutputStream()	Creates a new byte array output stream.
DataByteArrayOutputStream(byte[] buf)
DataByteArrayOutputStream(int size)	Creates a new byte array output stream, with a buffer capacity of the specified size, in bytes.

Method Summary

Modifier and Type	Method	Description
private void	ensureEnoughBuffer(int newcount)
byte[]	getData()
protected void	onWrite()	This method is called after each write to the buffer.
int	position()
void	position(int offset)	Set the current position for writing
void	reset()	reset the output stream
protected void	resize(int newcount)
void	restart()	start using a fresh byte array
void	restart(int size)	start using a fresh byte array
int	size()
void	skip(int size)
Buffer	toBuffer()	Get a Buffer from the stream
void	write(byte[] b, int off, int len)	Writes len bytes from the specified byte array starting at offset off to this byte array output stream.
void	write(int b)	Writes the specified byte to this byte array output stream.
void	write(Buffer data)
void	writeBoolean(boolean v)
void	writeByte(int v)
void	writeBytes(String s)
void	writeChar(int v)
void	writeChars(String s)
void	writeDouble(double v)
void	writeFloat(float v)
void	writeInt(int v)
void	writeLong(long v)
void	writeShort(int v)
void	writeUTF(String str)
void	writeVarInt(int value)
void	writeVarLong(long value)
void	writeVarSignedInt(int value)
void	writeVarSignedLong(long value)

Methods inherited from class OutputStream

close, flush, write

Methods inherited from class Object

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

Methods inherited from interface DataOutput

write

Field Details

DEFAULT_SIZE

private static final int DEFAULT_SIZE

See Also:

• Constant Field Values

buf

protected byte[] buf

pos

protected int pos

helper

protected AbstractVarIntSupport helper

Constructor Details

DataByteArrayOutputStream

public DataByteArrayOutputStream(int size)

Creates a new byte array output stream, with a buffer capacity of the specified size, in bytes.

Parameters:

size - the initial size.

Throws:

IllegalArgumentException - if size is negative.

DataByteArrayOutputStream

public DataByteArrayOutputStream(byte[] buf)

DataByteArrayOutputStream

public DataByteArrayOutputStream()

Creates a new byte array output stream.

Method Details

restart

public void restart(int size)

start using a fresh byte array

Parameters:

size -

restart

public void restart()

start using a fresh byte array

toBuffer

public Buffer toBuffer()

Get a Buffer from the stream

Returns:

the byte sequence

write

public void write(int b)
           throws IOException

Writes the specified byte to this byte array output stream.

Specified by:

write in interface DataOutput

Specified by:

write in class OutputStream

Parameters:

b - the byte to be written.

Throws:

IOException

write

public void write(Buffer data)
           throws IOException

Throws:

IOException

write

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

Writes len bytes from the specified byte array starting at offset off to this byte array output stream.

Specified by:

write in interface DataOutput

Overrides:

write in class OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

IOException

getData

public byte[] getData()

Returns:

the underlying byte[] buffer

reset

public void reset()

reset the output stream

position

public void position(int offset)
              throws IOException

Set the current position for writing

Parameters:

offset -

Throws:

IOException

position

public int position()

size

public int size()

writeBoolean

public void writeBoolean(boolean v)
                  throws IOException

Specified by:

writeBoolean in interface DataOutput

Throws:

IOException

writeByte

public void writeByte(int v)
               throws IOException

Specified by:

writeByte in interface DataOutput

Throws:

IOException

writeShort

public void writeShort(int v)
                throws IOException

Specified by:

writeShort in interface DataOutput

Throws:

IOException

writeChar

public void writeChar(int v)
               throws IOException

Specified by:

writeChar in interface DataOutput

Throws:

IOException

writeInt

public void writeInt(int v)
              throws IOException

Specified by:

writeInt in interface DataOutput

Throws:

IOException

writeLong

public void writeLong(long v)
               throws IOException

Specified by:

writeLong in interface DataOutput

Throws:

IOException

writeFloat

public void writeFloat(float v)
                throws IOException

Specified by:

writeFloat in interface DataOutput

Throws:

IOException

writeDouble

public void writeDouble(double v)
                 throws IOException

Specified by:

writeDouble in interface DataOutput

Throws:

IOException

writeBytes

public void writeBytes(String s)
                throws IOException

Specified by:

writeBytes in interface DataOutput

Throws:

IOException

writeChars

public void writeChars(String s)
                throws IOException

Specified by:

writeChars in interface DataOutput

Throws:

IOException

writeUTF

public void writeUTF(String str)
              throws IOException

Specified by:

writeUTF in interface DataOutput

Throws:

IOException

ensureEnoughBuffer

private void ensureEnoughBuffer(int newcount)

resize

protected void resize(int newcount)

onWrite

protected void onWrite()
                throws IOException

This method is called after each write to the buffer. This should allow subclasses to take some action based on the writes, for example flushing data to an external system based on size.

Throws:

IOException

skip

public void skip(int size)
          throws IOException

Throws:

IOException

writeVarInt

public void writeVarInt(int value)
                 throws IOException

Throws:

IOException

writeVarLong

public void writeVarLong(long value)
                  throws IOException

Throws:

IOException

writeVarSignedInt

public void writeVarSignedInt(int value)
                       throws IOException

Throws:

IOException

writeVarSignedLong

public void writeVarSignedLong(long value)
                        throws IOException

Throws:

IOException