Class CompressedQueryDataEncoder

java.lang.Object

io.trino.server.protocol.spooling.encoding.CompressedQueryDataEncoder

All Implemented Interfaces:

QueryDataEncoder

Direct Known Subclasses:

Lz4QueryDataEncoder, ZstdQueryDataEncoder

public abstract class CompressedQueryDataEncoder
extends Object
implements QueryDataEncoder

Nested Class Summary

Nested classes/interfaces inherited from interface io.trino.server.protocol.spooling.QueryDataEncoder

QueryDataEncoder.EncoderSelector, QueryDataEncoder.Factory

Field Summary

Fields

Modifier and Type	Field	Description
protected final QueryDataEncoder	delegate

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CompressedQueryDataEncoder(QueryDataEncoder delegate, int compressionThreshold)

Method Summary

Modifier and Type	Method	Description
protected abstract int	compress(byte[] buffer, int uncompressedSize, OutputStream output)
DataAttributes	encodeTo(OutputStream output, List<Page> pages)
protected static int	pagesSize(List<Page> pages)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.server.protocol.spooling.QueryDataEncoder

attributes, encoding

Field Details

delegate

protected final QueryDataEncoder delegate

Constructor Details

CompressedQueryDataEncoder

protected CompressedQueryDataEncoder(QueryDataEncoder delegate,
 int compressionThreshold)

Method Details

encodeTo

public DataAttributes encodeTo(OutputStream output,
 List<Page> pages)
                        throws IOException

Specified by:

encodeTo in interface QueryDataEncoder

Throws:

IOException

compress

protected abstract int compress(byte[] buffer,
 int uncompressedSize,
 OutputStream output)
                         throws IOException

Throws:

IOException

pagesSize

protected static int pagesSize(List<Page> pages)