Package org.apache.cassandra.io.sstable

Class IndexInfo

java.lang.Object

org.apache.cassandra.io.sstable.IndexInfo

public class IndexInfo
extends Object

IndexInfo is embedded in the indexed version of RowIndexEntry. Each instance roughly covers a range of column_index_size KiB and contains the first and last clustering value (or slice bound), its offset in the data file and width in the data file.

Each IndexInfo object is serialized as follows.

Serialization format changed in 3.0; the endOpenMarker has been introduced and integer fields are stored using varint encoding.

(*) IndexInfo.firstName (ClusteringPrefix serializer, either Clustering.serializer.serialize or Slice.Bound.serializer.serialize) (*) IndexInfo.lastName (ClusteringPrefix serializer, either Clustering.serializer.serialize or Slice.Bound.serializer.serialize) (long) IndexInfo.offset (long) IndexInfo.width (bool) IndexInfo.endOpenMarker != null (if 3.0) (int) (Uint post c14227) IndexInfo.endOpenMarker.localDeletionTime (if 3.0 && IndexInfo.endOpenMarker != null) (long) IndexInfo.endOpenMarker.markedForDeletionAt (if 3.0 && IndexInfo.endOpenMarker != null)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	IndexInfo.Serializer

Field Summary

Fields

Modifier and Type	Field	Description
static final long	EMPTY_SIZE
final DeletionTime	endOpenMarker
final ClusteringPrefix<?>	firstName
final ClusteringPrefix<?>	lastName
final long	offset
final long	width

Constructor Summary

Constructors

Constructor	Description
IndexInfo(ClusteringPrefix<?> firstName, ClusteringPrefix<?> lastName, long offset, long width, DeletionTime endOpenMarker)

Method Summary

Modifier and Type	Method	Description
static IndexInfo.Serializer	serializer(Version version, SerializationHeader header)
long	unsharedHeapSize()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EMPTY_SIZE

public static final long EMPTY_SIZE

offset

public final long offset

width

public final long width

firstName

public final ClusteringPrefix<?> firstName

lastName

public final ClusteringPrefix<?> lastName

endOpenMarker

public final DeletionTime endOpenMarker

Constructor Details

IndexInfo

public IndexInfo(ClusteringPrefix<?> firstName,
 ClusteringPrefix<?> lastName,
 long offset,
 long width,
 DeletionTime endOpenMarker)

Method Details

serializer

public static IndexInfo.Serializer serializer(Version version,
 SerializationHeader header)

unsharedHeapSize

public long unsharedHeapSize()