org.apache.cassandra.db.partitions

Class AbstractThreadUnsafePartition

java.lang.Object

org.apache.cassandra.db.partitions.AbstractThreadUnsafePartition

All Implemented Interfaces:

java.lang.Iterable<Row>, Partition

Direct Known Subclasses:

ArrayBackedPartition, FilteredPartition, PartitionUpdate

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

Abstract common class for all non-thread safe Partition implementations.

Field Summary

Fields

Modifier and Type	Field and Description
protected PartitionColumns	columns
protected DecoratedKey	key
protected CFMetaData	metadata
protected java.util.List<Row>	rows

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractThreadUnsafePartition(CFMetaData metadata, DecoratedKey key, PartitionColumns columns, java.util.List<Row> rows)

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	canHaveShadowedData()
PartitionColumns	columns()
abstract DeletionInfo	deletionInfo() The deletion info for the partition update.
Row	getRow(Clustering clustering) Returns the row corresponding to the provided clustering, or null if there is not such row.
boolean	isEmpty() Whether the partition object has no informations at all, including any deletion informations.
java.util.Iterator<Row>	iterator() Returns an iterator that iterators over the rows of this update in clustering order.
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()
protected SliceableUnfilteredRowIterator	sliceableUnfilteredIterator(ColumnFilter selection, boolean reversed)
abstract Row	staticRow()
java.lang.String	toString()
UnfilteredRowIterator	unfilteredIterator() Returns an UnfilteredRowIterator over all the rows/RT contained by this partition.
UnfilteredRowIterator	unfilteredIterator(ColumnFilter columns, 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 org.apache.cassandra.db.partitions.Partition

stats

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

metadata

protected final CFMetaData metadata

key

protected final DecoratedKey key

columns

protected final PartitionColumns columns

rows

protected final java.util.List<Row> rows

Constructor Detail

AbstractThreadUnsafePartition

protected AbstractThreadUnsafePartition(CFMetaData metadata,
                                        DecoratedKey key,
                                        PartitionColumns columns,
                                        java.util.List<Row> rows)

Method Detail

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

staticRow

public abstract Row staticRow()

canHaveShadowedData

protected abstract boolean canHaveShadowedData()

deletionInfo

public abstract DeletionInfo deletionInfo()

The deletion info for the partition update. Note: do not cast the result to a MutableDeletionInfo to modify it!

Returns:

the deletion info for the partition update for use as read-only.

rowCount

public int rowCount()

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

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

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

iterator

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

Returns an iterator that iterators over the rows of this update in clustering order.

Specified by:

iterator in interface java.lang.Iterable<Row>

Returns:

an iterator over the rows of this 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 columns,
                                                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

sliceableUnfilteredIterator

protected SliceableUnfilteredRowIterator sliceableUnfilteredIterator()

sliceableUnfilteredIterator

protected SliceableUnfilteredRowIterator sliceableUnfilteredIterator(ColumnFilter selection,
                                                                     boolean reversed)