com.hazelcast.spi.hotrestart.impl.io

Class ChunkFileCursor

java.lang.Object

com.hazelcast.spi.hotrestart.impl.io.ChunkFileCursor

All Implemented Interfaces:

ChunkFileRecord

Direct Known Subclasses:

ChunkFileCursor.Tomb

public abstract class ChunkFileCursor
extends Object
implements ChunkFileRecord

A cursor over a chunk file's contents. Common base class for tombstone and value chunk specializations, which are nested inside it.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ChunkFileCursor.Tomb Specialization of ChunkFileCursor to tombstone chunk.

Constructor Summary

Constructors

Constructor and Description
ChunkFileCursor(int headerSize, File chunkFile)

Method Summary

Modifier and Type	Method and Description
boolean	advance() Advances to the next record in the chunk file.
long	chunkSeq()
void	close()
byte[]	key()
long	prefix()
long	recordSeq()
int	size()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hazelcast.spi.hotrestart.impl.io.ChunkFileRecord

filePos, value

Constructor Detail

ChunkFileCursor

public ChunkFileCursor(int headerSize,
                       File chunkFile)

Method Detail

advance

public final boolean advance()

Advances to the next record in the chunk file. If this was an active chunk file at the time of shutdown, and if a broken record is found (unable to read the amount of data indicated by the header), the file is automatically truncated to the last intact record.

Returns:

whether there was a next record to advance to

close

public final void close()

chunkSeq

public final long chunkSeq()

Specified by:

chunkSeq in interface ChunkFileRecord

Returns:

chunk's seq

recordSeq

public final long recordSeq()

Specified by:

recordSeq in interface ChunkFileRecord

Returns:

record's seq

prefix

public final long prefix()

Specified by:

prefix in interface ChunkFileRecord

Returns:

record's key prefix

size

public int size()

Specified by:

size in interface ChunkFileRecord

Returns:

number of bytes the record occupies in the file

key

public byte[] key()

Specified by:

key in interface ChunkFileRecord

Returns:

record's key blob