org.apache.cassandra.db.partitions

Class AbstractBTreePartition

java.lang.Object

org.apache.cassandra.db.partitions.AbstractBTreePartition

All Implemented Interfaces:

java.lang.Iterable<Row>, Partition

Direct Known Subclasses:

AtomicBTreePartition, ImmutableBTreePartition, PartitionUpdate

public abstract class AbstractBTreePartition
extends java.lang.Object
implements Partition, java.lang.Iterable<Row>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	AbstractBTreePartition.Holder
class	AbstractBTreePartition.SliceableIterator
class	AbstractBTreePartition.SlicesIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected static AbstractBTreePartition.Holder	EMPTY
protected CFMetaData	metadata
protected DecoratedKey	partitionKey

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractBTreePartition(CFMetaData metadata, DecoratedKey partitionKey)

Method Summary

Modifier and Type	Method and Description
protected static AbstractBTreePartition.Holder	build(RowIterator rows, DeletionInfo deletion, boolean buildEncodingStats, int initialRowCapacity)
protected static AbstractBTreePartition.Holder	build(UnfilteredRowIterator iterator, int initialRowCapacity)
protected abstract boolean	canHaveShadowedData()
PartitionColumns	columns()
DeletionInfo	deletionInfo()
Row	getRow(Clustering clustering) Returns the row corresponding to the provided clustering, or null if there is not such row.
boolean	hasRows()
protected abstract AbstractBTreePartition.Holder	holder()
boolean	isEmpty() Whether the partition object has no informations at all, including any deletion informations.
java.util.Iterator<Row>	iterator()
Row	lastRow()
CFMetaData	metadata()
DecoratedKey	partitionKey()
DeletionTime	partitionLevelDeletion()
int	rowCount()
SearchIterator<Clustering,Row>	searchIterator(ColumnFilter columns, boolean reversed) Returns an iterator that allows to search specific rows efficiently.
protected SliceableUnfilteredRowIterator	sliceableUnfilteredIterator()
SliceableUnfilteredRowIterator	sliceableUnfilteredIterator(ColumnFilter columns, boolean reversed)
Row	staticRow()
EncodingStats	stats()
java.lang.String	toString()
UnfilteredRowIterator	unfilteredIterator() Returns an UnfilteredRowIterator over all the rows/RT contained by this partition.
UnfilteredRowIterator	unfilteredIterator(AbstractBTreePartition.Holder current, ColumnFilter selection, Slices slices, boolean reversed)
UnfilteredRowIterator	unfilteredIterator(ColumnFilter selection, Slices slices, boolean reversed) Returns an UnfilteredRowIterator over the rows/RT contained by this partition selected by the provided slices.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

EMPTY

protected static final AbstractBTreePartition.Holder EMPTY

metadata

protected final CFMetaData metadata

partitionKey

protected final DecoratedKey partitionKey

Constructor Detail

AbstractBTreePartition

protected AbstractBTreePartition(CFMetaData metadata,
                                 DecoratedKey partitionKey)

Method Detail

holder

protected abstract AbstractBTreePartition.Holder holder()

canHaveShadowedData

protected abstract boolean canHaveShadowedData()

deletionInfo

public DeletionInfo deletionInfo()

staticRow

public Row staticRow()

isEmpty

public boolean isEmpty()

Description copied from interface: Partition

Whether the partition object has no informations at all, including any deletion informations.

Specified by:

isEmpty in interface Partition

hasRows

public boolean hasRows()

metadata

public CFMetaData metadata()

Specified by:

metadata in interface Partition

partitionKey

public DecoratedKey partitionKey()

Specified by:

partitionKey in interface Partition

partitionLevelDeletion

public DeletionTime partitionLevelDeletion()

Specified by:

partitionLevelDeletion in interface Partition

columns

public PartitionColumns columns()

Specified by:

columns in interface Partition

stats

public EncodingStats stats()

Specified by:

stats in interface Partition

getRow

public Row getRow(Clustering clustering)

Description copied from interface: Partition

Returns the row corresponding to the provided clustering, or null if there is not such row.

Specified by:

getRow in interface Partition

searchIterator

public SearchIterator<Clustering,Row> searchIterator(ColumnFilter columns,
                                                     boolean reversed)

Description copied from interface: Partition

Returns an iterator that allows to search specific rows efficiently.

Specified by:

searchIterator in interface Partition

unfilteredIterator

public UnfilteredRowIterator unfilteredIterator()

Description copied from interface: Partition

Returns an UnfilteredRowIterator over all the rows/RT contained by this partition.

Specified by:

unfilteredIterator in interface Partition

unfilteredIterator

public UnfilteredRowIterator unfilteredIterator(ColumnFilter selection,
                                                Slices slices,
                                                boolean reversed)

Description copied from interface: Partition

Returns an UnfilteredRowIterator over the rows/RT contained by this partition selected by the provided slices.

Specified by:

unfilteredIterator in interface Partition

unfilteredIterator

public UnfilteredRowIterator unfilteredIterator(AbstractBTreePartition.Holder current,
                                                ColumnFilter selection,
                                                Slices slices,
                                                boolean reversed)

sliceableUnfilteredIterator

public SliceableUnfilteredRowIterator sliceableUnfilteredIterator(ColumnFilter columns,
                                                                  boolean reversed)

sliceableUnfilteredIterator

protected SliceableUnfilteredRowIterator sliceableUnfilteredIterator()

build

protected static AbstractBTreePartition.Holder build(UnfilteredRowIterator iterator,
                                                     int initialRowCapacity)

build

protected static AbstractBTreePartition.Holder build(RowIterator rows,
                                                     DeletionInfo deletion,
                                                     boolean buildEncodingStats,
                                                     int initialRowCapacity)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

rowCount

public int rowCount()

iterator

public java.util.Iterator<Row> iterator()

Specified by:

iterator in interface java.lang.Iterable<Row>

lastRow

public Row lastRow()