org.apache.cassandra.db

Class NativeCell

java.lang.Object

org.apache.cassandra.db.AbstractCell

org.apache.cassandra.db.AbstractNativeCell

org.apache.cassandra.db.NativeCell

All Implemented Interfaces:

IMeasurableMemory, Cell, CellName, Composite, OnDiskAtom

Direct Known Subclasses:

NativeCounterCell, NativeDeletedCell, NativeExpiringCell

public class NativeCell
extends AbstractNativeCell

Nested Class Summary

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

Composite.EOC

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

OnDiskAtom.Serializer

Field Summary

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

MAX_NAME_LENGTH

Constructor Summary

Constructors

Constructor and Description
NativeCell(NativeAllocator allocator, OpOrder.Group writeOp, Cell copyOf)

Method Summary

Methods

Modifier and Type	Method and Description
Cell	localCopy(CFMetaData metadata, AbstractAllocator allocator)
Cell	localCopy(CFMetaData metadata, MemtableAllocator allocator, OpOrder.Group opGroup)
CellName	name()
long	timestamp() For a standard column, this is the same as timestamp().
long	unsharedHeapSize()
long	unsharedHeapSizeExcludingData()
void	updateDigest(java.security.MessageDigest digest)

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

clusteringSize, collectionElement, compareTo, compareToSimple, construct, copy, cql3ColumnName, dataSize, end, eoc, equals, equals, get, getByte, getByteBuffer, getBytes, getInt, getLong, getShort, internalSize, isCollectionCell, isEmpty, isPrefixOf, isSameCQL3RowAs, isStatic, maxTimestamp, minTimestamp, postfixSize, setByte, setBytes, setInt, setLong, setShort, size, sizeOf, slice, start, toByteBuffer, updateWithName, updateWithValue, value, withEOC, withUpdatedName, withUpdatedTimestamp, writeComponentTo, writeMemoryTo

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

cellDataSize, create, diff, diffCounter, equals, getLocalDeletionTime, getString, hashCode, isLive, isLive, onDiskIterator, reconcile, reconcileCounter, serializationFlags, serializedSize, validateFields, validateName

Methods inherited from class java.lang.Object

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

Constructor Detail

NativeCell

public NativeCell(NativeAllocator allocator,
          OpOrder.Group writeOp,
          Cell copyOf)

Method Detail

name

public CellName name()

timestamp

public long timestamp()

Description copied from interface: OnDiskAtom

For a standard column, this is the same as timestamp(). For a super column, this is the min/max column timestamp of the sub columns.

localCopy

public Cell localCopy(CFMetaData metadata,
             AbstractAllocator allocator)

localCopy

public Cell localCopy(CFMetaData metadata,
             MemtableAllocator allocator,
             OpOrder.Group opGroup)

updateDigest

public void updateDigest(java.security.MessageDigest digest)

Specified by:

updateDigest in interface OnDiskAtom

Overrides:

updateDigest in class AbstractCell

unsharedHeapSizeExcludingData

public long unsharedHeapSizeExcludingData()

unsharedHeapSize

public long unsharedHeapSize()

Returns:

the amount of on-heap memory retained by the object that might be reclaimed if the object were reclaimed, i.e. it should try to exclude globally cached data where possible, or counting portions of arrays that are referenced by the object but used by other objects only (e.g. slabbed byte-buffers), etc.