Package io.trino.parquet.reader.flat

Class DictionaryDecoder<T>

java.lang.Object

io.trino.parquet.reader.flat.DictionaryDecoder<T>

All Implemented Interfaces:

ValueDecoder<T>

public final class DictionaryDecoder<T>
extends Object
implements ValueDecoder<T>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	DictionaryDecoder.DictionaryDecoderProvider<T>

Nested classes/interfaces inherited from interface io.trino.parquet.reader.decoders.ValueDecoder

ValueDecoder.EmptyValueDecoder<T>, ValueDecoder.LevelsDecoderProvider, ValueDecoder.ValueDecodersProvider<T>

Constructor Summary

Constructors

Constructor	Description
DictionaryDecoder(T dictionary, ColumnAdapter<T> columnAdapter, int dictionarySize, boolean isNonNull)

Method Summary

Modifier and Type	Method	Description
Block	getDictionaryBlock()
static <BufferType> DictionaryDecoder<BufferType>	getDictionaryDecoder(DictionaryPage dictionaryPage, ColumnAdapter<BufferType> columnAdapter, ValueDecoder<BufferType> plainValuesDecoder, boolean isNonNull)
int	getDictionarySize()
long	getRetainedSizeInBytes()
void	init(SimpleSliceInputStream input)
void	read(T values, int offset, int length)
void	readDictionaryIds(int[] ids, int offset, int length)
void	skip(int n)

Methods inherited from class java.lang.Object

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

Constructor Details

DictionaryDecoder

public DictionaryDecoder(T dictionary,
 ColumnAdapter<T> columnAdapter,
 int dictionarySize,
 boolean isNonNull)

Method Details

init

public void init(SimpleSliceInputStream input)

Specified by:

init in interface ValueDecoder<T>

read

public void read(T values,
 int offset,
 int length)

Specified by:

read in interface ValueDecoder<T>

skip

public void skip(int n)

Specified by:

skip in interface ValueDecoder<T>

getRetainedSizeInBytes

public long getRetainedSizeInBytes()

readDictionaryIds

public void readDictionaryIds(int[] ids,
 int offset,
 int length)

getDictionaryBlock

public Block getDictionaryBlock()

getDictionarySize

public int getDictionarySize()

getDictionaryDecoder

public static <BufferType>
DictionaryDecoder<BufferType> getDictionaryDecoder(DictionaryPage dictionaryPage,
 ColumnAdapter<BufferType> columnAdapter,
 ValueDecoder<BufferType> plainValuesDecoder,
 boolean isNonNull)