Package io.trino.spi.function

Interface AccumulatorStateSerializer<T extends AccumulatorState>

public interface AccumulatorStateSerializer<T extends AccumulatorState>

Method Summary

Modifier and Type	Method	Description
void	deserialize(Block block, int index, T state)	Deserialize index-th position in block into state.
Type	getSerializedType()
void	serialize(T state, BlockBuilder out)

Method Details

getSerializedType

Type getSerializedType()

serialize

void serialize(T state,
 BlockBuilder out)

deserialize

void deserialize(Block block,
 int index,
 T state)

Deserialize index-th position in block into state.

This method may be invoked with a reused dirty state. Therefore, implementations must not make assumptions about the initial value of state.

Null positions in block are skipped and ignored. In other words, block.isNull(index) is guaranteed to return false.