org.apache.cassandra.streaming

Class StreamReader.StreamDeserializer

java.lang.Object

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

org.apache.cassandra.streaming.StreamReader.StreamDeserializer

All Implemented Interfaces:

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

Enclosing class:

StreamReader

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

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	BUFFER_FILE_PREFIX
static java.lang.String	BUFFER_FILE_SUFFIX
static int	INITIAL_MEM_BUFFER_SIZE
static int	MAX_MEM_BUFFER_SIZE
static int	MAX_SPILL_FILE_SIZE

Constructor Summary

Constructors

Constructor and Description
StreamDeserializer(CFMetaData metadata, java.io.InputStream in, Version version, SerializationHeader header, long totalSize, java.util.UUID sessionId)

Method Summary

Modifier and Type	Method and Description
void	checkForExceptions()
void	cleanup()
void	close()
PartitionColumns	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.
CFMetaData	metadata() The metadata for the table this iterator on.
StreamReader.StreamDeserializer	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.
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

INITIAL_MEM_BUFFER_SIZE

public static final int INITIAL_MEM_BUFFER_SIZE

MAX_MEM_BUFFER_SIZE

public static final int MAX_MEM_BUFFER_SIZE

MAX_SPILL_FILE_SIZE

public static final int MAX_SPILL_FILE_SIZE

BUFFER_FILE_PREFIX

public static final java.lang.String BUFFER_FILE_PREFIX

See Also:

Constant Field Values

BUFFER_FILE_SUFFIX

public static final java.lang.String BUFFER_FILE_SUFFIX

See Also:

Constant Field Values

Constructor Detail

StreamDeserializer

public StreamDeserializer(CFMetaData metadata,
                          java.io.InputStream in,
                          Version version,
                          SerializationHeader header,
                          long totalSize,
                          java.util.UUID sessionId)
                   throws java.io.IOException

Throws:

java.io.IOException

Method Detail

newPartition

public StreamReader.StreamDeserializer newPartition()
                                             throws java.io.IOException

Throws:

java.io.IOException

metadata

public CFMetaData metadata()

Description copied from interface: BaseRowIterator

The metadata for the table this iterator on.

Specified by:

metadata in interface BaseRowIterator<Unfiltered>

columns

public PartitionColumns 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()