org.apache.cassandra.db.rows

Class BufferCell

java.lang.Object

org.apache.cassandra.db.rows.ColumnData

org.apache.cassandra.db.rows.Cell

org.apache.cassandra.db.rows.AbstractCell

org.apache.cassandra.db.rows.BufferCell

public class BufferCell
extends AbstractCell

Field Summary

Fields inherited from class org.apache.cassandra.db.rows.Cell

comparator, NO_DELETION_TIME, NO_TTL, serializer

Fields inherited from class org.apache.cassandra.db.rows.ColumnData

column

Constructor Summary

Constructors

Constructor and Description
BufferCell(ColumnDefinition column, long timestamp, int ttl, int localDeletionTime, java.nio.ByteBuffer value, CellPath path)

Method Summary

Modifier and Type	Method and Description
Cell	copy(AbstractAllocator allocator)
int	dataSize() The size of the data hold by this ColumnData.
static BufferCell	expiring(ColumnDefinition column, long timestamp, int ttl, int nowInSec, java.nio.ByteBuffer value)
static BufferCell	expiring(ColumnDefinition column, long timestamp, int ttl, int nowInSec, java.nio.ByteBuffer value, CellPath path)
boolean	isCounterCell() Whether the cell is a counter cell or not.
boolean	isExpiring() Whether the cell is an expiring one or not.
boolean	isLive(int nowInSec) Whether the cell is live or not given the current time.
boolean	isTombstone() Whether the cell is a tombstone or not.
static BufferCell	live(CFMetaData metadata, ColumnDefinition column, long timestamp, java.nio.ByteBuffer value)
static BufferCell	live(CFMetaData metadata, ColumnDefinition column, long timestamp, java.nio.ByteBuffer value, CellPath path)
int	localDeletionTime() The cell local deletion time.
Cell	markCounterLocalToBeCleared()
CellPath	path() For cells belonging to complex types (non-frozen collection and UDT), the path to the cell.
Cell	purge(DeletionPurger purger, int nowInSec)
long	timestamp() The cell timestamp.
static BufferCell	tombstone(ColumnDefinition column, long timestamp, int nowInSec)
static BufferCell	tombstone(ColumnDefinition column, long timestamp, int nowInSec, CellPath path)
int	ttl() The cell ttl.
long	unsharedHeapSizeExcludingData()
Cell	updateAllTimestamp(long newTimestamp) Returns a copy of the data where all timestamps for live data have replaced by newTimestamp and all deletion timestamp by newTimestamp - 1.
java.nio.ByteBuffer	value() The cell value.
Cell	withUpdatedColumn(ColumnDefinition newColumn)
Cell	withUpdatedValue(java.nio.ByteBuffer newValue)

Methods inherited from class org.apache.cassandra.db.rows.AbstractCell

digest, equals, hashCode, maxTimestamp, toString, validate

Methods inherited from class org.apache.cassandra.db.rows.ColumnData

column

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

BufferCell

public BufferCell(ColumnDefinition column,
                  long timestamp,
                  int ttl,
                  int localDeletionTime,
                  java.nio.ByteBuffer value,
                  CellPath path)

Method Detail

live

public static BufferCell live(CFMetaData metadata,
                              ColumnDefinition column,
                              long timestamp,
                              java.nio.ByteBuffer value)

live

public static BufferCell live(CFMetaData metadata,
                              ColumnDefinition column,
                              long timestamp,
                              java.nio.ByteBuffer value,
                              CellPath path)

expiring

public static BufferCell expiring(ColumnDefinition column,
                                  long timestamp,
                                  int ttl,
                                  int nowInSec,
                                  java.nio.ByteBuffer value)

expiring

public static BufferCell expiring(ColumnDefinition column,
                                  long timestamp,
                                  int ttl,
                                  int nowInSec,
                                  java.nio.ByteBuffer value,
                                  CellPath path)

tombstone

public static BufferCell tombstone(ColumnDefinition column,
                                   long timestamp,
                                   int nowInSec)

tombstone

public static BufferCell tombstone(ColumnDefinition column,
                                   long timestamp,
                                   int nowInSec,
                                   CellPath path)

isCounterCell

public boolean isCounterCell()

Description copied from class: Cell

Whether the cell is a counter cell or not.

Specified by:

isCounterCell in class Cell

Returns:

whether the cell is a counter cell or not.

isLive

public boolean isLive(int nowInSec)

Description copied from class: Cell

Whether the cell is live or not given the current time.

Specified by:

isLive in class Cell

Parameters:

nowInSec - the current time in seconds. This is used to decide if an expiring cell is expired or live.

Returns:

whether the cell is live or not at nowInSec.

isTombstone

public boolean isTombstone()

Description copied from class: Cell

Whether the cell is a tombstone or not.

Specified by:

isTombstone in class Cell

Returns:

whether the cell is a tombstone or not.

isExpiring

public boolean isExpiring()

Description copied from class: Cell

Whether the cell is an expiring one or not.

Note that this only correspond to whether the cell liveness info have a TTL or not, but doesn't tells whether the cell is already expired or not. You should use Cell.isLive(int) for that latter information.

Specified by:

isExpiring in class Cell

Returns:

whether the cell is an expiring one or not.

timestamp

public long timestamp()

Description copied from class: Cell

The cell timestamp.

Specified by:

timestamp in class Cell

Returns:

the cell timestamp.

ttl

public int ttl()

Description copied from class: Cell

The cell ttl.

Specified by:

ttl in class Cell

Returns:

the cell ttl, or NO_TTL if the cell isn't an expiring one.

localDeletionTime

public int localDeletionTime()

Description copied from class: Cell

The cell local deletion time.

Specified by:

localDeletionTime in class Cell

Returns:

the cell local deletion time, or NO_DELETION_TIME if the cell is neither a tombstone nor an expiring one.

value

public java.nio.ByteBuffer value()

Description copied from class: Cell

The cell value.

Specified by:

value in class Cell

Returns:

the cell value.

path

public CellPath path()

Description copied from class: Cell

For cells belonging to complex types (non-frozen collection and UDT), the path to the cell.

Specified by:

path in class Cell

Returns:

the cell path for cells of complex column, and null for other cells.

withUpdatedColumn

public Cell withUpdatedColumn(ColumnDefinition newColumn)

Specified by:

withUpdatedColumn in class Cell

withUpdatedValue

public Cell withUpdatedValue(java.nio.ByteBuffer newValue)

Specified by:

withUpdatedValue in class Cell

copy

public Cell copy(AbstractAllocator allocator)

Specified by:

copy in class Cell

markCounterLocalToBeCleared

public Cell markCounterLocalToBeCleared()

Specified by:

markCounterLocalToBeCleared in class Cell

purge

public Cell purge(DeletionPurger purger,
                  int nowInSec)

Specified by:

purge in class Cell

updateAllTimestamp

public Cell updateAllTimestamp(long newTimestamp)

Description copied from class: ColumnData

Returns a copy of the data where all timestamps for live data have replaced by newTimestamp and all deletion timestamp by newTimestamp - 1. This exists for the Paxos path, see PartitionUpdate.updateAllTimestamp(long) for additional details.

Specified by:

updateAllTimestamp in class ColumnData

dataSize

public int dataSize()

Description copied from class: ColumnData

The size of the data hold by this ColumnData.

Specified by:

dataSize in class ColumnData

Returns:

the size used by the data of this ColumnData.

unsharedHeapSizeExcludingData

public long unsharedHeapSizeExcludingData()

Specified by:

unsharedHeapSizeExcludingData in class ColumnData