Package org.apache.cassandra.io.sstable.format

Interface SSTableReadsListener

public interface SSTableReadsListener

Listener for receiving notifications associated with reading SSTables.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	SSTableReadsListener.SelectionReason	The reasons for selecting an SSTable
static class	SSTableReadsListener.SkippingReason	The reasons for skipping an SSTable

Field Summary

Fields

Modifier and Type	Field	Description
static SSTableReadsListener	NOOP_LISTENER	Listener that does nothing.

Method Summary

Modifier and Type	Method	Description
default void	onScanningStarted(SSTableReader sstable)	Handles notification that the specified SSTable is being scanned during a partition range query.
default void	onSSTableSelected(SSTableReader sstable, RowIndexEntry<?> indexEntry, SSTableReadsListener.SelectionReason reason)	Handles notification that the specified SSTable has been selected during a single partition query.
default void	onSSTableSkipped(SSTableReader sstable, SSTableReadsListener.SkippingReason reason)	Handles notification that the specified SSTable has been skipped during a single partition query.

Field Detail

NOOP_LISTENER

static final SSTableReadsListener NOOP_LISTENER

Listener that does nothing.

Method Detail

onSSTableSkipped

default void onSSTableSkipped(SSTableReader sstable,
                              SSTableReadsListener.SkippingReason reason)

Handles notification that the specified SSTable has been skipped during a single partition query.

Parameters:

sstable - the SSTable reader

reason - the reason for which the SSTable has been skipped

onSSTableSelected

default void onSSTableSelected(SSTableReader sstable,
                               RowIndexEntry<?> indexEntry,
                               SSTableReadsListener.SelectionReason reason)

Handles notification that the specified SSTable has been selected during a single partition query.

Parameters:

sstable - the SSTable reader

indexEntry - the index entry

reason - the reason for which the SSTable has been selected

onScanningStarted

default void onScanningStarted(SSTableReader sstable)

Handles notification that the specified SSTable is being scanned during a partition range query.

Parameters:

sstable - the SSTable reader of the SSTable being scanned.