org.apache.cassandra.db
Class Column

java.lang.Object
  org.apache.cassandra.db.Column

All Implemented Interfaces:

IColumn

public class Column
extends java.lang.Object
implements IColumn

Column is immutable, which prevents all kinds of confusion in a multithreaded environment. (TODO: look at making SuperColumn immutable too. This is trickier but is probably doable with something like PCollections -- http://code.google.com

Field Summary

Fields inherited from interface org.apache.cassandra.db.IColumn

MAX_NAME_LENGTH, UtfPrefix_

Constructor Summary

Column(byte[] name, byte[] value, long timestamp)

Column(byte[] name, byte[] value, long timestamp, boolean isDeleted)

Method Summary

void	addColumn(IColumn column)
long	comparePriority(Column o)
IColumn	diff(IColumn column)
int	getLocalDeletionTime()
long	getMarkedForDeleteAt()
int	getObjectCount()
java.lang.String	getString(AbstractType comparator)
Column	getSubColumn(byte[] columnName)
java.util.Collection<IColumn>	getSubColumns()
boolean	isMarkedForDelete()
long	mostRecentLiveChangeAt()
byte[]	name()
int	serializedSize()
static ColumnSerializer	serializer()
int	size()
long	timestamp()
void	updateDigest(java.security.MessageDigest digest)
byte[]	value()

Methods inherited from class java.lang.Object

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

Constructor Detail

Column

public Column(byte[] name,
              byte[] value,
              long timestamp)

Column

public Column(byte[] name,
              byte[] value,
              long timestamp,
              boolean isDeleted)

Method Detail

serializer

public static ColumnSerializer serializer()

name

public byte[] name()

Specified by:

name in interface IColumn

getSubColumn

public Column getSubColumn(byte[] columnName)

Specified by:

getSubColumn in interface IColumn

value

public byte[] value()

Specified by:

value in interface IColumn

getSubColumns

public java.util.Collection<IColumn> getSubColumns()

Specified by:

getSubColumns in interface IColumn

getObjectCount

public int getObjectCount()

Specified by:

getObjectCount in interface IColumn

timestamp

public long timestamp()

Specified by:

timestamp in interface IColumn

isMarkedForDelete

public boolean isMarkedForDelete()

Specified by:

isMarkedForDelete in interface IColumn

getMarkedForDeleteAt

public long getMarkedForDeleteAt()

Specified by:

getMarkedForDeleteAt in interface IColumn

mostRecentLiveChangeAt

public long mostRecentLiveChangeAt()

Specified by:

mostRecentLiveChangeAt in interface IColumn

size

public int size()

Specified by:

size in interface IColumn

serializedSize

public int serializedSize()

Specified by:

serializedSize in interface IColumn

addColumn

public void addColumn(IColumn column)

Specified by:

addColumn in interface IColumn

diff

public IColumn diff(IColumn column)

Specified by:

diff in interface IColumn

updateDigest

public void updateDigest(java.security.MessageDigest digest)

Specified by:

updateDigest in interface IColumn

getLocalDeletionTime

public int getLocalDeletionTime()

Specified by:

getLocalDeletionTime in interface IColumn

comparePriority

public long comparePriority(Column o)

getString

public java.lang.String getString(AbstractType comparator)

Specified by:

getString in interface IColumn