Package org.apache.iotdb.tsfile.compress

Class IUnCompressor.ZstdUnCompressor

java.lang.Object

org.apache.iotdb.tsfile.compress.IUnCompressor.ZstdUnCompressor

All Implemented Interfaces:

IUnCompressor

Enclosing interface:

IUnCompressor

public static class IUnCompressor.ZstdUnCompressor
extends Object
implements IUnCompressor

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.iotdb.tsfile.compress.IUnCompressor

IUnCompressor.GZIPUnCompressor, IUnCompressor.LZ4UnCompressor, IUnCompressor.LZMA2UnCompressor, IUnCompressor.NoUnCompressor, IUnCompressor.SnappyUnCompressor, IUnCompressor.ZstdUnCompressor

Constructor Summary

Constructors

Constructor	Description
ZstdUnCompressor()

Method Summary

Modifier and Type	Method	Description
CompressionType	getCodecName()
int	getUncompressedLength(byte[] array, int offset, int length)
int	getUncompressedLength(ByteBuffer buffer)	get the uncompressed length.
byte[]	uncompress(byte[] byteArray)	uncompress the byte array.
int	uncompress(byte[] byteArray, int offset, int length, byte[] output, int outOffset)	uncompress the byte array.
int	uncompress(ByteBuffer compressed, ByteBuffer uncompressed)	if the data is large, using this function is better.

Methods inherited from class java.lang.Object

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

Constructor Detail

ZstdUnCompressor

public ZstdUnCompressor()

Method Detail

getUncompressedLength

public int getUncompressedLength(byte[] array,
                                 int offset,
                                 int length)
                          throws IOException

Specified by:

getUncompressedLength in interface IUnCompressor

Throws:

IOException

getUncompressedLength

public int getUncompressedLength(ByteBuffer buffer)
                          throws IOException

Description copied from interface: IUnCompressor

get the uncompressed length.

Specified by:

getUncompressedLength in interface IUnCompressor

Parameters:

buffer - MUST be DirectByteBuffer

Throws:

IOException

uncompress

public byte[] uncompress(byte[] byteArray)
                  throws IOException

Description copied from interface: IUnCompressor

uncompress the byte array.

Specified by:

uncompress in interface IUnCompressor

Parameters:

byteArray - to be uncompressed bytes

Returns:

bytes after uncompressed

Throws:

IOException

uncompress

public int uncompress(byte[] byteArray,
                      int offset,
                      int length,
                      byte[] output,
                      int outOffset)
               throws IOException

Description copied from interface: IUnCompressor

uncompress the byte array.

Specified by:

uncompress in interface IUnCompressor

Parameters:

byteArray - -to be uncompressed bytes

offset - -offset

length - -length

output - -output byte

outOffset - -

Returns:

the valid length of the output array

Throws:

IOException

uncompress

public int uncompress(ByteBuffer compressed,
                      ByteBuffer uncompressed)
               throws IOException

Description copied from interface: IUnCompressor

if the data is large, using this function is better.

Specified by:

uncompress in interface IUnCompressor

Parameters:

compressed - MUST be DirectByteBuffer for Zstd.

uncompressed - MUST be DirectByteBuffer for Zstd.

Returns:

byte length of compressed data.

Throws:

IOException

getCodecName

public CompressionType getCodecName()

Specified by:

getCodecName in interface IUnCompressor