io.prestosql.operator.index

Class IndexSnapshot

java.lang.Object

io.prestosql.operator.index.IndexSnapshot

All Implemented Interfaces:

IndexedData, Closeable, AutoCloseable

@Immutable
public class IndexSnapshot
extends Object
implements IndexedData

Field Summary

Fields inherited from interface io.prestosql.operator.index.IndexedData

NO_MORE_POSITIONS, UNLOADED_INDEX_KEY

Constructor Summary

Constructors

Constructor and Description
IndexSnapshot(LookupSource values, LookupSource missingKeys)

Method Summary

Modifier and Type	Method and Description
void	appendTo(long position, PageBuilder pageBuilder, int outputChannelOffset)
void	close()
long	getJoinPosition(int position, Page page) Returns UNLOADED_INDEX_KEY if the key has not been loaded.
long	getNextJoinPosition(long currentPosition) Returns the next address to join.

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexSnapshot

public IndexSnapshot(LookupSource values,
                     LookupSource missingKeys)

Method Detail

getJoinPosition

public long getJoinPosition(int position,
                            Page page)

Description copied from interface: IndexedData

Returns UNLOADED_INDEX_KEY if the key has not been loaded. Returns NO_MORE_POSITIONS if the key has been loaded, but has no values. Returns a valid address if the key has been loaded and has values.

Specified by:

getJoinPosition in interface IndexedData

getNextJoinPosition

public long getNextJoinPosition(long currentPosition)

Description copied from interface: IndexedData

Returns the next address to join. Returns NO_MORE_POSITIONS if there are no more values to join.

Specified by:

getNextJoinPosition in interface IndexedData

appendTo

public void appendTo(long position,
                     PageBuilder pageBuilder,
                     int outputChannelOffset)

Specified by:

appendTo in interface IndexedData

close

public void close()

Specified by:

close in interface IndexedData

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable