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

Class BigTableKeyReader

java.lang.Object

org.apache.cassandra.io.sstable.format.big.BigTableKeyReader

All Implemented Interfaces:

Closeable, AutoCloseable, KeyReader

@NotThreadSafe
public class BigTableKeyReader
extends Object
implements KeyReader

Method Summary

Modifier and Type	Method	Description
boolean	advance()	Moves the iterator forward.
void	close()	Closes the iterator quietly
static BigTableKeyReader	create(FileHandle indexFile, RowIndexEntry.IndexSerializer serializer)
static BigTableKeyReader	create(RandomAccessReader indexFileReader, RowIndexEntry.IndexSerializer serializer)
long	dataPosition()	Position in the data file where the associated content resides
long	indexLength()
long	indexPosition()
void	indexPosition(long position)
boolean	isExhausted()	Returns true if we reach EOF
ByteBuffer	key()	Current key
long	keyPositionForSecondaryIndex()	Position in the component preferred for reading keys.
void	reset()	Resets the iterator to the initial position
String	toString()

Methods inherited from class java.lang.Object

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

Method Details

create

public static BigTableKeyReader create(RandomAccessReader indexFileReader,
 RowIndexEntry.IndexSerializer serializer)
                                throws IOException

Throws:

IOException

create

public static BigTableKeyReader create(FileHandle indexFile,
 RowIndexEntry.IndexSerializer serializer)
                                throws IOException

Throws:

IOException

close

public void close()

Description copied from interface: KeyReader

Closes the iterator quietly

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface KeyReader

advance

public boolean advance()
                throws IOException

Description copied from interface: KeyReader

Moves the iterator forward. Returns false if we reach EOF and there nothing more to read

Specified by:

advance in interface KeyReader

Throws:

IOException

isExhausted

public boolean isExhausted()

Description copied from interface: KeyReader

Returns true if we reach EOF

Specified by:

isExhausted in interface KeyReader

key

public ByteBuffer key()

Description copied from interface: KeyReader

Current key

Specified by:

key in interface KeyReader

keyPositionForSecondaryIndex

public long keyPositionForSecondaryIndex()

Description copied from interface: KeyReader

Position in the component preferred for reading keys. This is specific to SSTable implementation

Specified by:

keyPositionForSecondaryIndex in interface KeyReader

dataPosition

public long dataPosition()

Description copied from interface: KeyReader

Position in the data file where the associated content resides

Specified by:

dataPosition in interface KeyReader

indexPosition

public long indexPosition()

indexPosition

public void indexPosition(long position)
                   throws IOException

Throws:

IOException

indexLength

public long indexLength()

reset

public void reset()
           throws IOException

Description copied from interface: KeyReader

Resets the iterator to the initial position

Specified by:

reset in interface KeyReader

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object