org.apache.cassandra.db

Interface ExpiringCell

All Superinterfaces:

Cell, OnDiskAtom

All Known Implementing Classes:

BufferExpiringCell, NativeExpiringCell

public interface ExpiringCell
extends Cell

Alternative to Cell that have an expiring time. ExpiringCell is immutable (as Cell is). Note that ExpiringCell does not override Cell.getMarkedForDeleteAt, which means that it's in the somewhat unintuitive position of being deleted (after its expiration) without having a time-at-which-it-became-deleted. (Because ttl is a server-side measurement, we can't mix it with the timestamp field, which is client-supplied and whose resolution we can't assume anything about.)

Nested Class Summary

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

OnDiskAtom.Serializer

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_TTL

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

MAX_NAME_LENGTH

Method Summary

Methods

Modifier and Type	Method and Description
int	getTimeToLive()
ExpiringCell	localCopy(CFMetaData metadata, AbstractAllocator allocator)
ExpiringCell	localCopy(CFMetaData metaData, MemtableAllocator allocator, OpOrder.Group opGroup)

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

cellDataSize, diff, getString, isLive, isLive, name, reconcile, serializationFlags, serializedSize, unsharedHeapSizeExcludingData, value, withUpdatedName, withUpdatedTimestamp

Methods inherited from interface org.apache.cassandra.db.OnDiskAtom

getLocalDeletionTime, timestamp, updateDigest, validateFields

Field Detail

MAX_TTL

static final int MAX_TTL

See Also:

Constant Field Values

Method Detail

getTimeToLive

int getTimeToLive()

localCopy

ExpiringCell localCopy(CFMetaData metadata,
                     AbstractAllocator allocator)

Specified by:

localCopy in interface Cell

localCopy

ExpiringCell localCopy(CFMetaData metaData,
                     MemtableAllocator allocator,
                     OpOrder.Group opGroup)

Specified by:

localCopy in interface Cell