org.apache.cassandra.io.util

Class DataOutputBuffer

java.lang.Object

java.io.OutputStream

org.apache.cassandra.io.util.DataOutputStreamPlus

org.apache.cassandra.io.util.BufferedDataOutputStreamPlus

org.apache.cassandra.io.util.DataOutputBuffer

All Implemented Interfaces:

java.io.Closeable, java.io.DataOutput, java.io.Flushable, java.lang.AutoCloseable, DataOutputPlus

Direct Known Subclasses:

DataOutputBufferFixed, SafeMemoryWriter

public class DataOutputBuffer
extends BufferedDataOutputStreamPlus

An implementation of the DataOutputStream interface using a FastByteArrayOutputStream and exposing its buffer so copies can be avoided. This class is completely thread unsafe.

Field Summary

Fields inherited from class org.apache.cassandra.io.util.BufferedDataOutputStreamPlus

buffer, strictFlushing

Fields inherited from class org.apache.cassandra.io.util.DataOutputStreamPlus

channel

Constructor Summary

Constructors

Modifier	Constructor and Description
	DataOutputBuffer()
protected	DataOutputBuffer(java.nio.ByteBuffer buffer)
	DataOutputBuffer(int size)

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	buffer()
java.nio.ByteBuffer	buffer(boolean duplicate)
void	close()
protected void	doFlush(int count)
protected void	expandToFit(long count)
void	flush()
byte[]	getData()
int	getLength()
boolean	hasPosition() If the implementation supports providing a position, this method returns true, otherwise false.
protected java.nio.channels.WritableByteChannel	newDefaultChannel()
long	position() Returns the current position of the underlying target like a file-pointer or the position withing a buffer.
byte[]	toByteArray()

Methods inherited from class org.apache.cassandra.io.util.BufferedDataOutputStreamPlus

applyToChannel, order, write, write, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUnsignedVInt, writeUTF, writeVInt

Methods inherited from class org.apache.cassandra.io.util.DataOutputStreamPlus

retrieveTemporaryBuffer

Methods inherited from class java.lang.Object

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

Constructor Detail

DataOutputBuffer

public DataOutputBuffer()

DataOutputBuffer

public DataOutputBuffer(int size)

DataOutputBuffer

protected DataOutputBuffer(java.nio.ByteBuffer buffer)

Method Detail

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class BufferedDataOutputStreamPlus

Throws:

java.io.IOException

doFlush

protected void doFlush(int count)
                throws java.io.IOException

Overrides:

doFlush in class BufferedDataOutputStreamPlus

Throws:

java.io.IOException

expandToFit

protected void expandToFit(long count)

newDefaultChannel

protected java.nio.channels.WritableByteChannel newDefaultChannel()

Overrides:

newDefaultChannel in class DataOutputStreamPlus

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class BufferedDataOutputStreamPlus

buffer

public java.nio.ByteBuffer buffer()

buffer

public java.nio.ByteBuffer buffer(boolean duplicate)

getData

public byte[] getData()

getLength

public int getLength()

hasPosition

public boolean hasPosition()

Description copied from interface: DataOutputPlus

If the implementation supports providing a position, this method returns true, otherwise false.

position

public long position()

Description copied from interface: DataOutputPlus

Returns the current position of the underlying target like a file-pointer or the position withing a buffer. Not every implementation may support this functionality. Whether or not this functionality is supported can be checked via the DataOutputPlus.hasPosition().

toByteArray

public byte[] toByteArray()