org.apache.hadoop.hbase.io

Class ByteArrayOutputStream

java.lang.Object

java.io.OutputStream

org.apache.hadoop.hbase.io.ByteArrayOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, ByteBufferWriter

@InterfaceAudience.Private
public class ByteArrayOutputStream
extends OutputStream
implements ByteBufferWriter

Our own implementation of ByteArrayOutputStream where all methods are NOT synchronized and supports writing ByteBuffer directly to it.

Field Summary

Fields

Modifier and Type	Field and Description
private byte[]	buf
private static int	MAX_ARRAY_SIZE
private int	pos

Constructor Summary

Constructors

Constructor and Description
ByteArrayOutputStream()
ByteArrayOutputStream(int capacity)

Method Summary

Modifier and Type	Method and Description
private void	checkSizeAndGrow(int extra)
byte[]	getBuffer()
void	reset() Resets the pos field of this byte array output stream to zero.
int	size()
byte[]	toByteArray() Copies the content of this Stream into a new byte array.
void	write(byte[] b, int off, int len)
void	write(ByteBuffer b, int off, int len) Writes len bytes from the specified ByteBuffer starting at offset off
void	write(int b)
void	writeInt(int i) Writes an int to the underlying output stream as four bytes, high byte first.

Methods inherited from class java.io.OutputStream

close, flush, write

Methods inherited from class java.lang.Object

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

Field Detail

MAX_ARRAY_SIZE

private static final int MAX_ARRAY_SIZE

See Also:

Constant Field Values

buf

private byte[] buf

pos

private int pos

Constructor Detail

ByteArrayOutputStream

public ByteArrayOutputStream()

ByteArrayOutputStream

public ByteArrayOutputStream(int capacity)

Method Detail

write

public void write(ByteBuffer b,
                  int off,
                  int len)

Description copied from interface: ByteBufferWriter

Writes len bytes from the specified ByteBuffer starting at offset off

Specified by:

write in interface ByteBufferWriter

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

writeInt

public void writeInt(int i)

Description copied from interface: ByteBufferWriter

Writes an int to the underlying output stream as four bytes, high byte first.

Specified by:

writeInt in interface ByteBufferWriter

Parameters:

i - the int to write

write

public void write(int b)

Specified by:

write in class OutputStream

write

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

Overrides:

write in class OutputStream

checkSizeAndGrow

private void checkSizeAndGrow(int extra)

reset

public void reset()

Resets the pos field of this byte array output stream to zero. The output stream can be used again.

toByteArray

public byte[] toByteArray()

Copies the content of this Stream into a new byte array.

Returns:

the contents of this output stream, as new byte array.

getBuffer

public byte[] getBuffer()

Returns:

the underlying array where the data gets accumulated

size

public int size()

Returns:

The current size of the buffer.