Package org.apache.cassandra.db.rows

Class AbstractUnfilteredRowIterator

java.lang.Object

org.apache.cassandra.utils.AbstractIterator<Unfiltered>

org.apache.cassandra.db.rows.AbstractUnfilteredRowIterator

All Implemented Interfaces:

com.google.common.collect.PeekingIterator<Unfiltered>, java.lang.AutoCloseable, java.util.Iterator<Unfiltered>, BaseRowIterator<Unfiltered>, UnfilteredRowIterator, CloseableIterator<Unfiltered>

Direct Known Subclasses:

RowAndDeletionMergeIterator

public abstract class AbstractUnfilteredRowIterator
extends AbstractIterator<Unfiltered>
implements UnfilteredRowIterator

Field Summary

Fields

Modifier and Type	Field	Description
protected RegularAndStaticColumns	columns
protected boolean	isReverseOrder
protected TableMetadata	metadata
protected DecoratedKey	partitionKey
protected DeletionTime	partitionLevelDeletion
protected Row	staticRow
protected EncodingStats	stats

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractUnfilteredRowIterator(TableMetadata metadata, DecoratedKey partitionKey, DeletionTime partitionLevelDeletion, RegularAndStaticColumns columns, Row staticRow, boolean isReverseOrder, EncodingStats stats)

Method Summary

Modifier and Type	Method	Description
void	close()
RegularAndStaticColumns	columns()	A subset of the columns for the (static and regular) rows returned by this iterator.
boolean	isReverseOrder()	Whether or not the rows returned by this iterator are in reversed clustering order.
TableMetadata	metadata()	The metadata for the table this iterator on.
DecoratedKey	partitionKey()	The partition key of the partition this in an iterator over.
DeletionTime	partitionLevelDeletion()	The partition level deletion for the partition this iterate over.
Row	staticRow()	The static part corresponding to this partition (this can be an empty row but cannot be null).
EncodingStats	stats()	Return "statistics" about what is returned by this iterator.

Methods inherited from class org.apache.cassandra.utils.AbstractIterator

computeNext, endOfData, hasNext, next, peek, remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext

Methods inherited from interface org.apache.cassandra.db.rows.UnfilteredRowIterator

isEmpty

Field Detail

metadata

protected final TableMetadata metadata

partitionKey

protected final DecoratedKey partitionKey

partitionLevelDeletion

protected final DeletionTime partitionLevelDeletion

columns

protected final RegularAndStaticColumns columns

staticRow

protected final Row staticRow

isReverseOrder

protected final boolean isReverseOrder

stats

protected final EncodingStats stats

Constructor Detail

AbstractUnfilteredRowIterator

protected AbstractUnfilteredRowIterator(TableMetadata metadata,
                                        DecoratedKey partitionKey,
                                        DeletionTime partitionLevelDeletion,
                                        RegularAndStaticColumns columns,
                                        Row staticRow,
                                        boolean isReverseOrder,
                                        EncodingStats stats)

Method Detail

metadata

public TableMetadata metadata()

Description copied from interface: BaseRowIterator

The metadata for the table this iterator on.

Specified by:

metadata in interface BaseRowIterator<Unfiltered>

columns

public RegularAndStaticColumns columns()

Description copied from interface: BaseRowIterator

A subset of the columns for the (static and regular) rows returned by this iterator. Every row returned by this iterator must guarantee that it has only those columns.

Specified by:

columns in interface BaseRowIterator<Unfiltered>

isReverseOrder

public boolean isReverseOrder()

Description copied from interface: BaseRowIterator

Whether or not the rows returned by this iterator are in reversed clustering order.

Specified by:

isReverseOrder in interface BaseRowIterator<Unfiltered>

partitionKey

public DecoratedKey partitionKey()

Description copied from interface: BaseRowIterator

The partition key of the partition this in an iterator over.

Specified by:

partitionKey in interface BaseRowIterator<Unfiltered>

partitionLevelDeletion

public DeletionTime partitionLevelDeletion()

Description copied from interface: UnfilteredRowIterator

The partition level deletion for the partition this iterate over.

Specified by:

partitionLevelDeletion in interface UnfilteredRowIterator

staticRow

public Row staticRow()

Description copied from interface: BaseRowIterator

The static part corresponding to this partition (this can be an empty row but cannot be null).

Specified by:

staticRow in interface BaseRowIterator<Unfiltered>

stats

public EncodingStats stats()

Description copied from interface: UnfilteredRowIterator

Return "statistics" about what is returned by this iterator. Those are used for performance reasons (for delta-encoding for instance) and code should not expect those to be exact.

Specified by:

stats in interface UnfilteredRowIterator

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface CloseableIterator<Unfiltered>

Overrides:

close in class AbstractIterator<Unfiltered>