org.apache.cassandra.db.partitions

Class AbstractBTreePartition.SliceableIterator

java.lang.Object

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

org.apache.cassandra.db.rows.AbstractUnfilteredRowIterator

org.apache.cassandra.db.partitions.AbstractBTreePartition.SliceableIterator

All Implemented Interfaces:

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

Enclosing class:

AbstractBTreePartition

public class AbstractBTreePartition.SliceableIterator
extends AbstractUnfilteredRowIterator
implements SliceableUnfilteredRowIterator

Field Summary

Fields inherited from class org.apache.cassandra.db.rows.AbstractUnfilteredRowIterator

columns, isReverseOrder, metadata, partitionKey, partitionLevelDeletion, staticRow, stats

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SliceableIterator(ColumnFilter selection, boolean isReversed)

Method Summary

Modifier and Type	Method and Description
protected Unfiltered	computeNext()
java.util.Iterator<Unfiltered>	slice(Slice slice) Move forward (resp.

Methods inherited from class org.apache.cassandra.db.rows.AbstractUnfilteredRowIterator

close, columns, isReverseOrder, metadata, partitionKey, partitionLevelDeletion, staticRow, stats

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

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 org.apache.cassandra.db.rows.UnfilteredRowIterator

isEmpty, partitionLevelDeletion, stats

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

columns, isReverseOrder, metadata, partitionKey, staticRow

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

close

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Constructor Detail

SliceableIterator

protected SliceableIterator(ColumnFilter selection,
                            boolean isReversed)

Method Detail

computeNext

protected Unfiltered computeNext()

Specified by:

computeNext in class AbstractIterator<Unfiltered>

slice

public java.util.Iterator<Unfiltered> slice(Slice slice)

Description copied from interface: SliceableUnfilteredRowIterator

Move forward (resp. backward if isReverseOrder() is true for the iterator) in the iterator and return an iterator over the Unfiltered selected by the provided slice.

Please note that successive calls to slice are allowed provided the slice are non overlapping and are passed in clustering (resp. reverse clustering) order. However, slice is allowed to leave the iterator in an unknown state and there is no guarantee over what a call to hasNext or next will yield after a call to slice. In other words, for a given iterator, you should either use slice or hasNext/next but not both.

Specified by:

slice in interface SliceableUnfilteredRowIterator