org.apache.cassandra.db.rows

Interface BaseRowIterator<U extends Unfiltered>

All Superinterfaces:

java.lang.AutoCloseable, CloseableIterator<U>, java.util.Iterator<U>

All Known Subinterfaces:

RowIterator, SliceableUnfilteredRowIterator, UnfilteredRowIterator

All Known Implementing Classes:

AbstractBTreePartition.SliceableIterator, AbstractBTreePartition.SlicesIterator, AbstractUnfilteredRowIterator, BaseRows, FilteredRows, LazilyInitializedUnfilteredRowIterator, RowAndDeletionMergeIterator, SSTableIdentityIterator, SSTableIterator, SSTableReversedIterator, StreamReader.StreamDeserializer, WrappingUnfilteredRowIterator

public interface BaseRowIterator<U extends Unfiltered>
extends CloseableIterator<U>

A common interface for Row and Unfiltered, that permits sharing of the (majority) common methods and functionality

Method Summary

Modifier and Type	Method and Description
PartitionColumns	columns() A subset of the columns for the (static and regular) rows returned by this iterator.
boolean	isEmpty() Returns whether the provided iterator has no data.
boolean	isReverseOrder() Whether or not the rows returned by this iterator are in reversed clustering order.
CFMetaData	metadata() The metadata for the table this iterator on.
DecoratedKey	partitionKey() The partition key of the partition this in an iterator over.
Row	staticRow() The static part corresponding to this partition (this can be an empty row).

Methods inherited from interface org.apache.cassandra.utils.CloseableIterator

close

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Method Detail

metadata

CFMetaData metadata()

The metadata for the table this iterator on.

isReverseOrder

boolean isReverseOrder()

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

columns

PartitionColumns columns()

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.

partitionKey

DecoratedKey partitionKey()

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

staticRow

Row staticRow()

The static part corresponding to this partition (this can be an empty row).

isEmpty

boolean isEmpty()

Returns whether the provided iterator has no data.