org.apache.cassandra.io.compress

Class CompressionMetadata.Writer

java.lang.Object

java.io.RandomAccessFile

org.apache.cassandra.io.compress.CompressionMetadata.Writer

All Implemented Interfaces:

java.io.Closeable, java.io.DataInput, java.io.DataOutput, java.lang.AutoCloseable

Enclosing class:

CompressionMetadata

public static class CompressionMetadata.Writer
extends java.io.RandomAccessFile

Method Summary

Methods

Modifier and Type	Method and Description
long	chunkOffsetBy(int chunkIndex) Get a chunk offset by it's index.
void	close()
void	finalizeHeader(long dataLength, int chunks)
static CompressionMetadata.Writer	open(java.lang.String path)
void	resetAndTruncate(int chunkIndex) Reset the writer so that the next chunk offset written will be the one of chunkIndex.
void	writeHeader(CompressionParameters parameters)

Methods inherited from class java.io.RandomAccessFile

getChannel, getFD, getFilePointer, length, read, read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, seek, setLength, skipBytes, write, 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

Method Detail

open

public static CompressionMetadata.Writer open(java.lang.String path)

writeHeader

public void writeHeader(CompressionParameters parameters)

finalizeHeader

public void finalizeHeader(long dataLength,
                  int chunks)

chunkOffsetBy

public long chunkOffsetBy(int chunkIndex)

Get a chunk offset by it's index.

Parameters:

chunkIndex - Index of the chunk.

Returns:

offset of the chunk in the compressed file.

resetAndTruncate

public void resetAndTruncate(int chunkIndex)

Reset the writer so that the next chunk offset written will be the one of chunkIndex.

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.RandomAccessFile

Throws:

java.io.IOException