Package io.trino.operator

Interface RowReference

All Known Implementing Classes:

RowReferencePageManager.LoadCursor

public interface RowReference

Reference to a row.

Note: RowReference gives us the ability to defer row ID generation (which can be expensive in tight loops).

Method Summary

Modifier and Type	Method	Description
long	allocateRowId()	Allocate a stable row ID that can be used to reference this row at a future point.
int	compareTo(RowIdComparisonStrategy strategy, long rowId)	Compares the referenced row to the specified row ID using the provided RowIdComparisonStrategy.
boolean	equals(RowIdHashStrategy strategy, long rowId)	Checks equality of the referenced row with the specified row ID using the provided RowIdHashStrategy.
long	hash(RowIdHashStrategy strategy)	Calculates the hash of the referenced row using the provided RowIdHashStrategy.

Method Details

compareTo

int compareTo(RowIdComparisonStrategy strategy,
 long rowId)

Compares the referenced row to the specified row ID using the provided RowIdComparisonStrategy.

equals

boolean equals(RowIdHashStrategy strategy,
 long rowId)

Checks equality of the referenced row with the specified row ID using the provided RowIdHashStrategy.

hash

long hash(RowIdHashStrategy strategy)

Calculates the hash of the referenced row using the provided RowIdHashStrategy.

allocateRowId

long allocateRowId()

Allocate a stable row ID that can be used to reference this row at a future point.