com.github.luben.zstd

Class ZstdOutputStreamNoFinalizer

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

com.github.luben.zstd.ZstdOutputStreamNoFinalizer

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class ZstdOutputStreamNoFinalizer
extends java.io.FilterOutputStream

OutputStream filter that compresses the data using Zstd compression.

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream) create a new compressing OutputStream
ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream, BufferPool bufferPool) create a new compressing OutputStream
ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream, BufferPool bufferPool, int level) create a new compressing OutputStream
ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream, int level) create a new compressing OutputStream

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush() Flushes the output
static long	recommendedCOutSize()
ZstdOutputStreamNoFinalizer	setChecksum(boolean useChecksums) Enable checksums for the compressed stream.
ZstdOutputStreamNoFinalizer	setCloseFrameOnFlush(boolean closeOnFlush) Enable closing the frame on flush.
ZstdOutputStreamNoFinalizer	setDict(byte[] dict)
ZstdOutputStreamNoFinalizer	setDict(ZstdDictCompress dict)
ZstdOutputStreamNoFinalizer	setLevel(int level) Set the compression level.
ZstdOutputStreamNoFinalizer	setLong(int windowLog) Enable Long Distance Matching and set the Window size Log.
ZstdOutputStreamNoFinalizer	setWorkers(int n) Enable use of worker threads for parallel compression.
void	write(byte[] src, int offset, int len)
void	write(int i)

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.lang.Object

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

Constructor Detail

ZstdOutputStreamNoFinalizer

public ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream,
                                   int level)
                            throws java.io.IOException

create a new compressing OutputStream

Parameters:

outStream - the stream to wrap

level - the compression level

Throws:

java.io.IOException

ZstdOutputStreamNoFinalizer

public ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream)
                            throws java.io.IOException

create a new compressing OutputStream

Parameters:

outStream - the stream to wrap

Throws:

java.io.IOException

ZstdOutputStreamNoFinalizer

public ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream,
                                   BufferPool bufferPool,
                                   int level)
                            throws java.io.IOException

create a new compressing OutputStream

Parameters:

outStream - the stream to wrap

bufferPool - the pool to fetch and return buffers

Throws:

java.io.IOException

ZstdOutputStreamNoFinalizer

public ZstdOutputStreamNoFinalizer(java.io.OutputStream outStream,
                                   BufferPool bufferPool)
                            throws java.io.IOException

create a new compressing OutputStream

Parameters:

outStream - the stream to wrap

bufferPool - the pool to fetch and return buffers

Throws:

java.io.IOException

Method Detail

recommendedCOutSize

public static long recommendedCOutSize()

setChecksum

public ZstdOutputStreamNoFinalizer setChecksum(boolean useChecksums)
                                        throws java.io.IOException

Enable checksums for the compressed stream. Default: false

Throws:

java.io.IOException

setLevel

public ZstdOutputStreamNoFinalizer setLevel(int level)
                                     throws java.io.IOException

Set the compression level. Default: 3

Throws:

java.io.IOException

setLong

public ZstdOutputStreamNoFinalizer setLong(int windowLog)
                                    throws java.io.IOException

Enable Long Distance Matching and set the Window size Log. Values for windowLog outside the range 10-27 will disable and reset LDM

Throws:

java.io.IOException

setWorkers

public ZstdOutputStreamNoFinalizer setWorkers(int n)
                                       throws java.io.IOException

Enable use of worker threads for parallel compression. Default: no worker threads.

Throws:

java.io.IOException

setCloseFrameOnFlush

public ZstdOutputStreamNoFinalizer setCloseFrameOnFlush(boolean closeOnFlush)
                                                 throws java.io.IOException

Enable closing the frame on flush. This will guarantee that it can be ready fully if the process crashes before closing the stream. On the downside it will negatively affect the compression ratio. Default: false.

Throws:

java.io.IOException

setDict

public ZstdOutputStreamNoFinalizer setDict(byte[] dict)
                                    throws java.io.IOException

Throws:

java.io.IOException

setDict

public ZstdOutputStreamNoFinalizer setDict(ZstdDictCompress dict)
                                    throws java.io.IOException

Throws:

java.io.IOException

write

public void write(byte[] src,
                  int offset,
                  int len)
           throws java.io.IOException

Overrides:

write in class java.io.FilterOutputStream

Throws:

java.io.IOException

write

public void write(int i)
           throws java.io.IOException

Overrides:

write in class java.io.FilterOutputStream

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Flushes the output

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.FilterOutputStream

Throws:

java.io.IOException

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.FilterOutputStream

Throws:

java.io.IOException