Package org.apache.commons.compress.compressors.zstandard

Class ZstdCompressorOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.apache.commons.compress.CompressFilterOutputStream<T>

org.apache.commons.compress.compressors.CompressorOutputStream<com.github.luben.zstd.ZstdOutputStream>

org.apache.commons.compress.compressors.zstandard.ZstdCompressorOutputStream

All Implemented Interfaces:

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

public class ZstdCompressorOutputStream
extends CompressorOutputStream<com.github.luben.zstd.ZstdOutputStream>

CompressorOutputStream implementation to create Zstandard encoded stream.

This class avoids making the underlying zstd classes part of the public or protected API. The underlying implementation is provided through the Zstandard JNI library which is based on zstd.

Since:

1.16

See Also:

Zstandard JNI, zstd

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ZstdCompressorOutputStream.Builder	Builds a new ZstdCompressorOutputStream.

Constructor Summary

Constructors

Constructor	Description
ZstdCompressorOutputStream(java.io.OutputStream outStream)	Constructs a new instance using default Zstd parameter values.
ZstdCompressorOutputStream(java.io.OutputStream outStream, int level)	Deprecated. Use builder().
ZstdCompressorOutputStream(java.io.OutputStream outStream, int level, boolean closeFrameOnFlush)	Deprecated. Use builder().
ZstdCompressorOutputStream(java.io.OutputStream outStream, int level, boolean closeFrameOnFlush, boolean checksum)	Deprecated. Use builder().

Method Summary

Modifier and Type	Method	Description
static ZstdCompressorOutputStream.Builder	builder()	Constructs a new builder of ZstdCompressorOutputStream.
void	write(byte[] buf, int off, int len)

Methods inherited from class org.apache.commons.compress.CompressFilterOutputStream

close, finish, isClosed, write, write, writeUsAscii, writeUsAsciiRaw, writeUtf8

Methods inherited from class java.io.FilterOutputStream

flush, write, write

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Constructor Detail

ZstdCompressorOutputStream

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

Constructs a new instance using default Zstd parameter values.

Parameters:

outStream - the output stream.

Throws:

java.io.IOException - if an I/O error occurs.

ZstdCompressorOutputStream

@Deprecated
public ZstdCompressorOutputStream(java.io.OutputStream outStream,
                                  int level)
                           throws java.io.IOException

Deprecated.

Use builder().

Constructs a new instance using default Zstd parameter values plus a compression level.

Parameters:

outStream - the output stream.

level - The compression level, from 0 to 9, where the default is ZstdConstants.ZSTD_CLEVEL_DEFAULT.

Throws:

java.io.IOException - if an I/O error occurs.

Since:

1.18

ZstdCompressorOutputStream

@Deprecated
public ZstdCompressorOutputStream(java.io.OutputStream outStream,
                                  int level,
                                  boolean closeFrameOnFlush)
                           throws java.io.IOException

Deprecated.

Use builder().

Constructs a new instance using default Zstd parameter values plus a compression level and checksum setting.

Parameters:

outStream - the output stream.

level - The compression level, from 0 to 9, where the default is ZstdConstants.ZSTD_CLEVEL_DEFAULT.

closeFrameOnFlush - whether to close the frame on flush.

Throws:

java.io.IOException - if an I/O error occurs.

Since:

1.18

ZstdCompressorOutputStream

@Deprecated
public ZstdCompressorOutputStream(java.io.OutputStream outStream,
                                  int level,
                                  boolean closeFrameOnFlush,
                                  boolean checksum)
                           throws java.io.IOException

Deprecated.

Use builder().

Constructs a new instance using default Zstd parameter values plus a compression level, closeFrameOnFlush and checksum settings.

Parameters:

outStream - the output stream.

level - The compression level, from 0 to 9, where the default is ZstdConstants.ZSTD_CLEVEL_DEFAULT.

closeFrameOnFlush - whether to close the frame on flush.

checksum - Whether a 32-bits checksum of content is written at end of frame.

Throws:

java.io.IOException - if an I/O error occurs.

Since:

1.18

Method Detail

builder

public static ZstdCompressorOutputStream.Builder builder()

Constructs a new builder of ZstdCompressorOutputStream.

Returns:

a new builder of ZstdCompressorOutputStream.

Since:

1.28.0

write

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

Overrides:

write in class java.io.FilterOutputStream

Throws:

java.io.IOException