org.apache.cassandra.db

Class CounterUpdateCell

java.lang.Object

org.apache.cassandra.db.Cell

org.apache.cassandra.db.CounterUpdateCell

All Implemented Interfaces:

OnDiskAtom

public class CounterUpdateCell
extends Cell

A counter update while it hasn't been applied yet by the leader replica. Contains a single counter update. When applied by the leader replica, this is transformed to a relevant CounterCell. This Cell is a temporary data structure that should never be stored inside a memtable or an sstable.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.db.OnDiskAtom

OnDiskAtom.Serializer

Field Summary

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

MAX_NAME_LENGTH, name, timestamp, value

Constructor Summary

Constructors

Constructor and Description
CounterUpdateCell(CellName name, java.nio.ByteBuffer value, long timestamp)
CounterUpdateCell(CellName name, long value, long timestamp)

Method Summary

Methods

Modifier and Type	Method and Description
long	delta()
Cell	diff(Cell cell)
java.lang.String	getString(CellNameType comparator)
Cell	localCopy(ColumnFamilyStore cfs, AbstractAllocator allocator)
Cell	reconcile(Cell cell, AbstractAllocator allocator)
int	serializationFlags()

Methods inherited from class org.apache.cassandra.db.Cell

create, dataSize, equals, excessHeapSizeExcludingData, getLocalDeletionTime, getMarkedForDeleteAt, hashCode, hasIrrelevantData, isLive, isMarkedForDelete, maxTimestamp, minTimestamp, name, onDiskIterator, reconcile, serializedSize, timestamp, updateDigest, validateFields, validateName, value, withUpdatedName, withUpdatedTimestamp

Methods inherited from class java.lang.Object

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

Constructor Detail

CounterUpdateCell

public CounterUpdateCell(CellName name,
                 long value,
                 long timestamp)

CounterUpdateCell

public CounterUpdateCell(CellName name,
                 java.nio.ByteBuffer value,
                 long timestamp)

Method Detail

delta

public long delta()

diff

public Cell diff(Cell cell)

Overrides:

diff in class Cell

reconcile

public Cell reconcile(Cell cell,
             AbstractAllocator allocator)

Overrides:

reconcile in class Cell

serializationFlags

public int serializationFlags()

Overrides:

serializationFlags in class Cell

localCopy

public Cell localCopy(ColumnFamilyStore cfs,
             AbstractAllocator allocator)

Overrides:

localCopy in class Cell

getString

public java.lang.String getString(CellNameType comparator)

Overrides:

getString in class Cell