Package com.github.luben.zstd

Class ZstdDictCompress

java.lang.Object

com.github.luben.zstd.ZstdDictCompress

All Implemented Interfaces:

Closeable, AutoCloseable

public class ZstdDictCompress
extends Object

Constructor Summary

Constructors

Constructor	Description
ZstdDictCompress(byte[] dict, int level)	Convenience constructor to create a new dictionary for use with fast compress
ZstdDictCompress(byte[] dict, int offset, int length, int level)	Create a new dictionary for use with fast compress
ZstdDictCompress(ByteBuffer dict, int level)	Create a new dictionary for use with fast compress.
ZstdDictCompress(ByteBuffer dict, int level, boolean byReference)	Create a new dictionary for use with fast compress.

Method Summary

Modifier and Type	Method	Description
void	close()
protected void	finalize()
ByteBuffer	getByReferenceBuffer()	Get the byte buffer that backs this dict, if any, or null if not backed by a byte buffer.

Methods inherited from class java.lang.Object

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

Constructor Details

ZstdDictCompress

public ZstdDictCompress(byte[] dict,
 int level)

Convenience constructor to create a new dictionary for use with fast compress

Parameters:

dict - buffer containing dictionary to load/parse with exact length

level - compression level

ZstdDictCompress

public ZstdDictCompress(byte[] dict,
 int offset,
 int length,
 int level)

Create a new dictionary for use with fast compress

Parameters:

dict - buffer containing dictionary

offset - the offset into the buffer to read from

length - number of bytes to use from the buffer

level - compression level

ZstdDictCompress

public ZstdDictCompress(ByteBuffer dict,
 int level)

Create a new dictionary for use with fast compress. The provided bytebuffer is available for reuse when the method returns.

Parameters:

dict - Direct ByteBuffer containing dictionary using position and limit to define range in buffer.

level - compression level

ZstdDictCompress

public ZstdDictCompress(ByteBuffer dict,
 int level,
 boolean byReference)

Create a new dictionary for use with fast compress. If byReference is true, then the native code does not copy the data but keeps a reference to the byte buffer, which must then not be modified before this context has been closed.

Parameters:

dict - Direct ByteBuffer containing dictionary using position and limit to define range in buffer.

level - compression level

byReference - tell the native part to use the byte buffer directly and not copy the data when true.

Method Details

getByReferenceBuffer

public ByteBuffer getByReferenceBuffer()

Get the byte buffer that backs this dict, if any, or null if not backed by a byte buffer.

finalize

protected void finalize()

Overrides:

finalize in class Object

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable