Package org.apache.cassandra.db.rows

Class BufferCell

java.lang.Object

org.apache.cassandra.db.rows.ColumnData

org.apache.cassandra.db.rows.Cell<V>

org.apache.cassandra.db.rows.AbstractCell<java.nio.ByteBuffer>

org.apache.cassandra.db.rows.BufferCell

All Implemented Interfaces:

IMeasurableMemory

public class BufferCell
extends AbstractCell<java.nio.ByteBuffer>

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.db.rows.Cell

Cell.Factory<V>

Nested classes/interfaces inherited from class org.apache.cassandra.db.rows.ColumnData

ColumnData.PostReconciliationFunction, ColumnData.Reconciler

Field Summary

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

comparator, MAX_DELETION_TIME, NO_DELETION_TIME, NO_TTL, serializer

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

column, noOp

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
ValueAccessor<java.nio.ByteBuffer>	accessor()
Cell<?>	clone(ByteBufferCloner cloner)
static BufferCell	expiring(ColumnMetadata column, long timestamp, int ttl, int nowInSec, java.nio.ByteBuffer value)
static BufferCell	expiring(ColumnMetadata column, long timestamp, int ttl, int nowInSec, java.nio.ByteBuffer value, CellPath path)
static BufferCell	live(ColumnMetadata column, long timestamp, java.nio.ByteBuffer value)
static BufferCell	live(ColumnMetadata column, long timestamp, java.nio.ByteBuffer value, CellPath path)
int	localDeletionTime()	The cell local deletion time.
CellPath	path()	For cells belonging to complex types (non-frozen collection and UDT), the path to the cell.
long	timestamp()	The cell timestamp.
static BufferCell	tombstone(ColumnMetadata column, long timestamp, int nowInSec)
static BufferCell	tombstone(ColumnMetadata column, long timestamp, int nowInSec, CellPath path)
int	ttl()	The cell ttl.
long	unsharedHeapSize()
long	unsharedHeapSizeExcludingData()
java.nio.ByteBuffer	value()
Cell<?>	withSkippedValue()	Used to apply the same optimization as in Cell.Serializer.deserialize(org.apache.cassandra.io.util.DataInputPlus, org.apache.cassandra.db.LivenessInfo, org.apache.cassandra.schema.ColumnMetadata, org.apache.cassandra.db.SerializationHeader, org.apache.cassandra.db.rows.DeserializationHelper, org.apache.cassandra.db.marshal.ValueAccessor<V>) when the column is not queried but eventhough it's used for digest calculation.
Cell<?>	withUpdatedColumn(ColumnMetadata newColumn)
Cell<?>	withUpdatedTimestampAndLocalDeletionTime(long newTimestamp, int newLocalDeletionTime)
Cell<?>	withUpdatedValue(java.nio.ByteBuffer newValue)

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

dataSize, digest, equals, equals, hashCode, hasInvalidDeletions, isCounterCell, isExpiring, isLive, isTombstone, markCounterLocalToBeCleared, maxTimestamp, purge, purgeDataOlderThan, toString, updateAllTimestamp, validate

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

buffer, clone, valueSize

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

column, digest, reconciler

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferCell

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

Method Detail

live

public static BufferCell live(ColumnMetadata column,
                              long timestamp,
                              java.nio.ByteBuffer value)

live

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

expiring

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

expiring

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

tombstone

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

tombstone

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

timestamp

public long timestamp()

Description copied from class: Cell

The cell timestamp.

Specified by:

timestamp in class Cell<java.nio.ByteBuffer>

Returns:

the cell timestamp.

ttl

public int ttl()

Description copied from class: Cell

The cell ttl.

Specified by:

ttl in class Cell<java.nio.ByteBuffer>

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<java.nio.ByteBuffer>

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()

Specified by:

value in class Cell<java.nio.ByteBuffer>

accessor

public ValueAccessor<java.nio.ByteBuffer> accessor()

Specified by:

accessor in class Cell<java.nio.ByteBuffer>

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<java.nio.ByteBuffer>

Returns:

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

withUpdatedColumn

public Cell<?> withUpdatedColumn(ColumnMetadata newColumn)

Specified by:

withUpdatedColumn in class Cell<java.nio.ByteBuffer>

withUpdatedValue

public Cell<?> withUpdatedValue(java.nio.ByteBuffer newValue)

Specified by:

withUpdatedValue in class Cell<java.nio.ByteBuffer>

withUpdatedTimestampAndLocalDeletionTime

public Cell<?> withUpdatedTimestampAndLocalDeletionTime(long newTimestamp,
                                                        int newLocalDeletionTime)

Specified by:

withUpdatedTimestampAndLocalDeletionTime in class Cell<java.nio.ByteBuffer>

withSkippedValue

public Cell<?> withSkippedValue()

Description copied from class: Cell

Used to apply the same optimization as in Cell.Serializer.deserialize(org.apache.cassandra.io.util.DataInputPlus, org.apache.cassandra.db.LivenessInfo, org.apache.cassandra.schema.ColumnMetadata, org.apache.cassandra.db.SerializationHeader, org.apache.cassandra.db.rows.DeserializationHelper, org.apache.cassandra.db.marshal.ValueAccessor<V>) when the column is not queried but eventhough it's used for digest calculation.

Specified by:

withSkippedValue in class Cell<java.nio.ByteBuffer>

Returns:

a cell with an empty buffer as value

unsharedHeapSize

public long unsharedHeapSize()

Specified by:

unsharedHeapSize in interface IMeasurableMemory

Specified by:

unsharedHeapSize in class ColumnData

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.

clone

public Cell<?> clone(ByteBufferCloner cloner)

Overrides:

clone in class AbstractCell<java.nio.ByteBuffer>

unsharedHeapSizeExcludingData

public long unsharedHeapSizeExcludingData()

Specified by:

unsharedHeapSizeExcludingData in class ColumnData