org.apache.cassandra.io.compress
Class CompressedRandomAccessReader

java.lang.Object
  java.io.RandomAccessFile
      org.apache.cassandra.io.util.RandomAccessReader
          org.apache.cassandra.io.compress.CompressedRandomAccessReader

All Implemented Interfaces:

java.io.Closeable, java.io.DataInput, java.io.DataOutput, 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/interfaces inherited from class org.apache.cassandra.io.util.RandomAccessReader

RandomAccessReader.BufferedRandomAccessFileMark

Field Summary

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

buffer, bufferOffset, CACHE_FLUSH_INTERVAL_IN_BYTES, channel, current, DEFAULT_BUFFER_SIZE, markedPointer, owner, validBufferBytes

Method Summary

long	length()
static CompressedRandomAccessReader	open(java.lang.String dataFilePath, CompressionMetadata metadata, boolean skipIOCache)
static CompressedRandomAccessReader	open(java.lang.String path, CompressionMetadata metadata, CompressedSegmentedFile owner)
protected void	reBuffer() Read data from file starting from current currentOffset to populate buffer.
java.lang.String	toString()

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

bufferCursor, bytesPastMark, bytesPastMark, bytesRemaining, close, deallocate, getFilePointer, getPath, isEOF, mark, open, open, open, read, read, read, readBytes, reset, reset, resetBuffer, seek, write, write, write

Methods inherited from class java.io.RandomAccessFile

getChannel, getFD, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, setLength, skipBytes, 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, wait, wait, wait

Methods inherited from interface java.io.DataInput

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

Method Detail

open

public static CompressedRandomAccessReader open(java.lang.String path,
                                                CompressionMetadata metadata,
                                                CompressedSegmentedFile owner)

open

public static CompressedRandomAccessReader open(java.lang.String dataFilePath,
                                                CompressionMetadata metadata,
                                                boolean skipIOCache)

reBuffer

protected void reBuffer()

Description copied from class: RandomAccessReader

Read data from file starting from current currentOffset to populate buffer.

Overrides:

reBuffer in class RandomAccessReader

length

public long length()

Overrides:

length in class RandomAccessReader

toString

public java.lang.String toString()

Overrides:

toString in class RandomAccessReader