org.apache.flink.table.runtime.generated

Interface NormalizedKeyComputer

public interface NormalizedKeyComputer

Normalized key computer for BinaryInMemorySortBuffer. For performance, subclasses are usually implemented through CodeGenerator.

Method Summary

Modifier and Type	Method and Description
int	compareKey(org.apache.flink.core.memory.MemorySegment segI, int offsetI, org.apache.flink.core.memory.MemorySegment segJ, int offsetJ) Compares two normalized keys in respective MemorySegment.
int	getNumKeyBytes() Get normalized keys bytes length.
boolean	invertKey() Flag whether normalized key comparisons should be inverted key.
boolean	isKeyFullyDetermines() whether the normalized key can fully determines the comparison.
void	putKey(org.apache.flink.table.data.RowData record, org.apache.flink.core.memory.MemorySegment target, int offset) Writes a normalized key for the given record into the target MemorySegment.
void	swapKey(org.apache.flink.core.memory.MemorySegment segI, int offsetI, org.apache.flink.core.memory.MemorySegment segJ, int offsetJ) Swaps two normalized keys in respective MemorySegment.

Method Detail

putKey

void putKey(org.apache.flink.table.data.RowData record,
            org.apache.flink.core.memory.MemorySegment target,
            int offset)

Writes a normalized key for the given record into the target MemorySegment.

compareKey

int compareKey(org.apache.flink.core.memory.MemorySegment segI,
               int offsetI,
               org.apache.flink.core.memory.MemorySegment segJ,
               int offsetJ)

Compares two normalized keys in respective MemorySegment.

swapKey

void swapKey(org.apache.flink.core.memory.MemorySegment segI,
             int offsetI,
             org.apache.flink.core.memory.MemorySegment segJ,
             int offsetJ)

Swaps two normalized keys in respective MemorySegment.

getNumKeyBytes

int getNumKeyBytes()

Get normalized keys bytes length.

isKeyFullyDetermines

boolean isKeyFullyDetermines()

whether the normalized key can fully determines the comparison.

invertKey

boolean invertKey()

Flag whether normalized key comparisons should be inverted key.