org.apache.cassandra.hints

Class CompressedChecksummedDataInput

java.lang.Object

java.io.InputStream

org.apache.cassandra.io.util.RebufferingInputStream

org.apache.cassandra.hints.ChecksummedDataInput

org.apache.cassandra.hints.CompressedChecksummedDataInput

All Implemented Interfaces:

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

public final class CompressedChecksummedDataInput
extends ChecksummedDataInput

Nested Class Summary

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

DataInputPlus.DataInputStreamPlus

Field Summary

Fields inherited from class org.apache.cassandra.hints.ChecksummedDataInput

bufferOffset, channel

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

buffer

Constructor Summary

Constructors

Constructor and Description
CompressedChecksummedDataInput(ChannelProxy channel, ICompressor compressor, long filePosition)

Method Summary

Modifier and Type	Method and Description
void	close()
InputPosition	getSeekPosition() Return a seekable representation of the current position.
long	getSourcePosition() Returns the position in the source file, which is different for getPosition() for compressed/encrypted files and may be imprecise.
boolean	isEOF() Since an entire block of compressed data is read off of disk, not just a hint at a time, we don't report EOF until the decompressed data has also been read completely
protected void	readBuffer()
void	seek(InputPosition p)
static ChecksummedDataInput	upgradeInput(ChecksummedDataInput input, ICompressor compressor)

Methods inherited from class org.apache.cassandra.hints.ChecksummedDataInput

bytesPastLimit, checkCrc, checkLimit, getChannel, getPath, getPosition, limit, open, read, readFully, reBuffer, resetCrc, resetLimit, tryUncacheRead

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

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

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, reset, skip

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.DataInputPlus

skipBytesFully

Constructor Detail

CompressedChecksummedDataInput

public CompressedChecksummedDataInput(ChannelProxy channel,
                                      ICompressor compressor,
                                      long filePosition)

Method Detail

isEOF

public boolean isEOF()

Since an entire block of compressed data is read off of disk, not just a hint at a time, we don't report EOF until the decompressed data has also been read completely

Overrides:

isEOF in class ChecksummedDataInput

getSourcePosition

public long getSourcePosition()

Description copied from class: ChecksummedDataInput

Returns the position in the source file, which is different for getPosition() for compressed/encrypted files and may be imprecise.

Overrides:

getSourcePosition in class ChecksummedDataInput

getSeekPosition

public InputPosition getSeekPosition()

Description copied from class: ChecksummedDataInput

Return a seekable representation of the current position. For compressed files this is chunk position in file and offset within chunk.

Overrides:

getSeekPosition in class ChecksummedDataInput

seek

public void seek(InputPosition p)

Overrides:

seek in class ChecksummedDataInput

readBuffer

protected void readBuffer()

Overrides:

readBuffer in class ChecksummedDataInput

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class ChecksummedDataInput

upgradeInput

public static ChecksummedDataInput upgradeInput(ChecksummedDataInput input,
                                                ICompressor compressor)