org.apache.cassandra.io.sstable

Class SSTableIdentityIterator

java.lang.Object

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

org.apache.cassandra.io.sstable.SSTableIdentityIterator

All Implemented Interfaces:

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

public class SSTableIdentityIterator
extends AbstractIterator<Unfiltered>
implements java.lang.Comparable<SSTableIdentityIterator>, UnfilteredRowIterator

Constructor Summary

Constructors

Constructor and Description
SSTableIdentityIterator(SSTableReader sstable, RandomAccessReader file, DecoratedKey key) Used to iterate through the columns of a row.

Method Summary

Modifier and Type	Method and Description
void	close()
PartitionColumns	columns() A subset of the columns for the (static and regular) rows returned by this iterator.
int	compareTo(SSTableIdentityIterator o)
protected Unfiltered	computeNext()
java.lang.String	getPath()
boolean	isReverseOrder() Whether or not the atom 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.
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).
EncodingStats	stats() Return "statistics" about what is returned by this iterator.

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

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Constructor Detail

SSTableIdentityIterator

public SSTableIdentityIterator(SSTableReader sstable,
                               RandomAccessReader file,
                               DecoratedKey key)

Used to iterate through the columns of a row.

Parameters:

sstable - SSTable we are reading ffrom.

file - Reading using this file.

key - Key of this row.

Method Detail

metadata

public CFMetaData metadata()

Description copied from interface: UnfilteredRowIterator

The metadata for the table this iterator on.

Specified by:

metadata in interface UnfilteredRowIterator

columns

public PartitionColumns columns()

Description copied from interface: UnfilteredRowIterator

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 UnfilteredRowIterator

isReverseOrder

public boolean isReverseOrder()

Description copied from interface: UnfilteredRowIterator

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

Specified by:

isReverseOrder in interface UnfilteredRowIterator

partitionKey

public DecoratedKey partitionKey()

Description copied from interface: UnfilteredRowIterator

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

Specified by:

partitionKey in interface UnfilteredRowIterator

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: UnfilteredRowIterator

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

Specified by:

staticRow in interface UnfilteredRowIterator

computeNext

protected Unfiltered computeNext()

Specified by:

computeNext in class AbstractIterator<Unfiltered>

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface UnfilteredRowIterator

getPath

public java.lang.String getPath()

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

compareTo

public int compareTo(SSTableIdentityIterator o)

Specified by:

compareTo in interface java.lang.Comparable<SSTableIdentityIterator>