org.apache.cassandra.io.compress

Class CompressedRandomAccessReader

java.lang.Object

java.io.InputStream

org.apache.cassandra.io.util.RebufferingInputStream

org.apache.cassandra.io.util.RandomAccessReader

org.apache.cassandra.io.compress.CompressedRandomAccessReader

All Implemented Interfaces:

java.io.Closeable, java.io.DataInput, java.lang.AutoCloseable, DataInputPlus, FileDataInput

public class CompressedRandomAccessReader
extends RandomAccessReader

CRAR extends RAR to transparently uncompress blocks from the file into RAR.buffer. Most of the RAR "read bytes from the buffer, rebuffering when necessary" machinery works unchanged after that.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CompressedRandomAccessReader.Builder

Nested classes/interfaces inherited from class org.apache.cassandra.io.util.RandomAccessReader

RandomAccessReader.BufferedRandomAccessFileMark, RandomAccessReader.RandomAccessReaderWithOwnChannel

Nested classes/interfaces inherited from interface org.apache.cassandra.io.util.DataInputPlus

DataInputPlus.DataInputStreamPlus

Field Summary

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

bufferOffset, bufferSize, channel, DEFAULT_BUFFER_SIZE, limiter, markedPointer, MAX_THROTTLED_BUFFER_SIZE, regions

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

buffer

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CompressedRandomAccessReader(CompressedRandomAccessReader.Builder builder)

Method Summary

Modifier and Type	Method and Description
protected int	getBufferSize(RandomAccessReader.Builder builder)
protected void	initializeBuffer()
long	length()
protected void	reBufferMmap()
protected void	reBufferStandard()
protected void	releaseBuffer()
java.lang.String	toString()

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

allocateBuffer, available, bytesPastMark, bytesPastMark, bytesRemaining, close, current, getChannel, getFilePointer, getPath, getPosition, isEOF, mark, markSupported, open, open, readLine, reBuffer, reset, reset, seek

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

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLong, readPrimitiveSlowly, readShort, readUnsignedByte, readUnsignedShort, readUnsignedVInt, readUTF, readVInt, skipBytes

Methods inherited from class java.io.InputStream

mark, read, skip

Methods inherited from class java.lang.Object

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

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

readUnsignedVInt, readVInt

Methods inherited from interface java.io.DataInput

readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, skipBytes

Constructor Detail

CompressedRandomAccessReader

protected CompressedRandomAccessReader(CompressedRandomAccessReader.Builder builder)

Method Detail

getBufferSize

protected int getBufferSize(RandomAccessReader.Builder builder)

Overrides:

getBufferSize in class RandomAccessReader

initializeBuffer

protected void initializeBuffer()

Overrides:

initializeBuffer in class RandomAccessReader

releaseBuffer

protected void releaseBuffer()

Overrides:

releaseBuffer in class RandomAccessReader

reBufferStandard

protected void reBufferStandard()

Overrides:

reBufferStandard in class RandomAccessReader

reBufferMmap

protected void reBufferMmap()

Overrides:

reBufferMmap in class RandomAccessReader

length

public long length()

Overrides:

length in class RandomAccessReader

toString

public java.lang.String toString()

Overrides:

toString in class RandomAccessReader