org.apache.cassandra.db.composites

Class SimpleDenseCellName

java.lang.Object

org.apache.cassandra.db.composites.AbstractComposite

org.apache.cassandra.db.composites.SimpleComposite

org.apache.cassandra.db.composites.SimpleDenseCellName

All Implemented Interfaces:

IMeasurableMemory, CellName, Composite

public class SimpleDenseCellName
extends SimpleComposite
implements CellName

Nested Class Summary

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

Composite.EOC

Field Summary

Fields inherited from class org.apache.cassandra.db.composites.SimpleComposite

element

Method Summary

Methods

Modifier and Type	Method and Description
int	clusteringSize() The number of clustering components.
java.nio.ByteBuffer	collectionElement() The value of the collection element, or null if the cell is not part of a collection (i.e.
CellName	copy(CFMetaData cfm, AbstractAllocator allocator)
ColumnIdentifier	cql3ColumnName(CFMetaData metadata) The name of the CQL3 column this cell represents.
boolean	isCollectionCell()
boolean	isSameCQL3RowAs(CellNameType type, CellName other) Whether this cell is part of the same CQL3 row as the other cell.
long	unsharedHeapSize()
long	unsharedHeapSizeExcludingData()

Methods inherited from class org.apache.cassandra.db.composites.SimpleComposite

get, size, toByteBuffer, withEOC

Methods inherited from class org.apache.cassandra.db.composites.AbstractComposite

dataSize, end, eoc, equals, hashCode, isEmpty, isPrefixOf, isStatic, slice, start

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.db.composites.Composite

dataSize, end, eoc, get, isEmpty, isPrefixOf, isStatic, size, slice, start, toByteBuffer, withEOC

Method Detail

clusteringSize

public int clusteringSize()

Description copied from interface: CellName

The number of clustering components. It can be 0 if the table has no clustering columns, and it can be equal to size() if the table is dense() (in which case cql3ColumnName() will be null).

Specified by:

clusteringSize in interface CellName

cql3ColumnName

public ColumnIdentifier cql3ColumnName(CFMetaData metadata)

Description copied from interface: CellName

The name of the CQL3 column this cell represents. Will be null for cells of "dense" tables.

Specified by:

cql3ColumnName in interface CellName

collectionElement

public java.nio.ByteBuffer collectionElement()

Description copied from interface: CellName

The value of the collection element, or null if the cell is not part of a collection (i.e. if !isCollectionCell()).

Specified by:

collectionElement in interface CellName

isCollectionCell

public boolean isCollectionCell()

Specified by:

isCollectionCell in interface CellName

isSameCQL3RowAs

public boolean isSameCQL3RowAs(CellNameType type,
                      CellName other)

Description copied from interface: CellName

Whether this cell is part of the same CQL3 row as the other cell.

Specified by:

isSameCQL3RowAs in interface CellName

unsharedHeapSize

public long unsharedHeapSize()

Specified by:

unsharedHeapSize in interface IMeasurableMemory

Overrides:

unsharedHeapSize in class SimpleComposite

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.

unsharedHeapSizeExcludingData

public long unsharedHeapSizeExcludingData()

Specified by:

unsharedHeapSizeExcludingData in interface CellName

copy

public CellName copy(CFMetaData cfm,
            AbstractAllocator allocator)

Specified by:

copy in interface CellName

Specified by:

copy in interface Composite

Overrides:

copy in class SimpleComposite