org.apache.cassandra.db.composites

Class SimpleSparseCellName

java.lang.Object

org.apache.cassandra.db.composites.AbstractComposite

org.apache.cassandra.db.composites.SimpleSparseCellName

All Implemented Interfaces:

IMeasurableMemory, CellName, Composite

Direct Known Subclasses:

SimpleSparseInternedCellName

public class SimpleSparseCellName
extends AbstractComposite
implements CellName

Nested Class Summary

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

Composite.EOC

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(AbstractAllocator allocator)
ColumnIdentifier	cql3ColumnName() The name of the CQL3 column this cell represents.
long	excessHeapSizeExcludingData()
void	free(PoolAllocator<?> allocator)
java.nio.ByteBuffer	get(int i)
boolean	isCollectionCell()
boolean	isSameCQL3RowAs(CellName other) Whether this cell is part of the same CQL3 row as the other cell.
int	size()
java.nio.ByteBuffer	toByteBuffer()
long	unsharedHeapSize()
Composite	withEOC(Composite.EOC newEoc)

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

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

Method Detail

size

public int size()

Specified by:

size in interface Composite

get

public java.nio.ByteBuffer get(int i)

Specified by:

get in interface Composite

withEOC

public Composite withEOC(Composite.EOC newEoc)

Specified by:

withEOC in interface Composite

Overrides:

withEOC in class AbstractComposite

toByteBuffer

public java.nio.ByteBuffer toByteBuffer()

Specified by:

toByteBuffer in interface Composite

Overrides:

toByteBuffer in class AbstractComposite

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()

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(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

excessHeapSizeExcludingData

public long excessHeapSizeExcludingData()

Specified by:

excessHeapSizeExcludingData in interface CellName

unsharedHeapSize

public long unsharedHeapSize()

Specified by:

unsharedHeapSize in interface IMeasurableMemory

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.

copy

public CellName copy(AbstractAllocator allocator)

Specified by:

copy in interface CellName

Specified by:

copy in interface Composite

free

public void free(PoolAllocator<?> allocator)

Specified by:

free in interface Composite