org.apache.cassandra.io.util

Class DataOutputBuffer

java.lang.Object

java.io.OutputStream

org.apache.cassandra.io.util.AbstractDataOutput

org.apache.cassandra.io.util.DataOutputStreamPlus

org.apache.cassandra.io.util.DataOutputBuffer

All Implemented Interfaces:

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

public final class DataOutputBuffer
extends DataOutputStreamPlus

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.DataOutputStreamPlus

out

Constructor Summary

Constructors

Constructor and Description
DataOutputBuffer()
DataOutputBuffer(int size)

Method Summary

Methods

Modifier and Type	Method and Description
java.nio.ByteBuffer	asByteBuffer()
byte[]	getData() Returns the current contents of the buffer.
int	getLength() Returns the length of the valid data currently in the buffer.
byte[]	toByteArray()
void	write(byte[] b, int off, int len) Writes count bytes from the byte array buffer starting at offset to this RandomAccessFile starting at the current file pointer..
void	write(java.nio.ByteBuffer buffer)
void	write(int b) Writes the specified byte oneByte to this RandomAccessFile starting at the current file pointer.

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

close, flush

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

write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.io.util.DataOutputPlus

write

Methods inherited from interface java.io.DataOutput

write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Constructor Detail

DataOutputBuffer

public DataOutputBuffer()

DataOutputBuffer

public DataOutputBuffer(int size)

Method Detail

write

public void write(int b)

Description copied from class: AbstractDataOutput

Writes the specified byte oneByte to this RandomAccessFile starting at the current file pointer. Only the low order byte of oneByte is written.

Specified by:

write in interface java.io.DataOutput

Overrides:

write in class DataOutputStreamPlus

Parameters:

b - the byte to be written

write

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

Description copied from class: AbstractDataOutput

Writes count bytes from the byte array buffer starting at offset to this RandomAccessFile starting at the current file pointer..

Specified by:

write in interface java.io.DataOutput

Overrides:

write in class DataOutputStreamPlus

Parameters:

b - the bytes to be written

off - offset in buffer to get bytes

len - number of bytes in buffer to write

write

public void write(java.nio.ByteBuffer buffer)
           throws java.io.IOException

Specified by:

write in interface DataOutputPlus

Overrides:

write in class AbstractDataOutput

Throws:

java.io.IOException

getData

public byte[] getData()

Returns the current contents of the buffer. Data is only valid to getLength().

toByteArray

public byte[] toByteArray()

asByteBuffer

public java.nio.ByteBuffer asByteBuffer()

getLength

public int getLength()

Returns the length of the valid data currently in the buffer.