org.apache.cassandra.db.streaming

Class CassandraStreamReader.StreamDeserializer

java.lang.Object

com.google.common.collect.UnmodifiableIterator<Unfiltered>

org.apache.cassandra.db.streaming.CassandraStreamReader.StreamDeserializer

All Implemented Interfaces:

java.lang.AutoCloseable, java.util.Iterator<Unfiltered>, BaseRowIterator<Unfiltered>, UnfilteredRowIterator, CloseableIterator<Unfiltered>

Enclosing class:

CassandraStreamReader

public static class CassandraStreamReader.StreamDeserializer
extends com.google.common.collect.UnmodifiableIterator<Unfiltered>
implements UnfilteredRowIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected SSTableSimpleIterator	iterator
protected DecoratedKey	key
protected DeletionTime	partitionLevelDeletion
protected Row	staticRow

Constructor Summary

Constructors

Constructor and Description
StreamDeserializer(TableMetadata metadata, DataInputPlus in, Version version, SerializationHeader header, StreamSession session, SSTableMultiWriter writer)

Method Summary

Modifier and Type	Method and Description
void	checkForExceptions()
void	cleanup()
void	close()
RegularAndStaticColumns	columns() A subset of the columns for the (static and regular) rows returned by this iterator.
boolean	hasNext()
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.
UnfilteredRowIterator	newPartition()
Unfiltered	next()
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.
protected void	readKey()
protected void	readPartition()
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 com.google.common.collect.UnmodifiableIterator

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, remove

Field Detail

key

protected DecoratedKey key

partitionLevelDeletion

protected DeletionTime partitionLevelDeletion

iterator

protected SSTableSimpleIterator iterator

staticRow

protected Row staticRow

Constructor Detail

StreamDeserializer

public StreamDeserializer(TableMetadata metadata,
                          DataInputPlus in,
                          Version version,
                          SerializationHeader header,
                          StreamSession session,
                          SSTableMultiWriter writer)
                   throws java.io.IOException

Throws:

java.io.IOException

Method Detail

newPartition

public UnfilteredRowIterator newPartition()
                                   throws java.io.IOException

Throws:

java.io.IOException

readKey

protected void readKey()
                throws java.io.IOException

Throws:

java.io.IOException

readPartition

protected void readPartition()
                      throws java.io.IOException

Throws:

java.io.IOException

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

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<Unfiltered>

next

public Unfiltered next()

Specified by:

next in interface java.util.Iterator<Unfiltered>

checkForExceptions

public void checkForExceptions()
                        throws java.io.IOException

Throws:

java.io.IOException

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface CloseableIterator<Unfiltered>

cleanup

public void cleanup()