org.apache.cassandra.db
Class ReadCommand

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

All Implemented Interfaces:

IReadCommand

Direct Known Subclasses:

SliceByNamesReadCommand, SliceFromReadCommand

public abstract class ReadCommand
extends java.lang.Object
implements IReadCommand

Field Summary

static byte	CMD_TYPE_GET_SLICE
static byte	CMD_TYPE_GET_SLICE_BY_NAMES
protected byte	commandType
java.nio.ByteBuffer	key
QueryPath	queryPath
static org.apache.cassandra.db.ReadCommandSerializer	serializer
java.lang.String	table

Constructor Summary

protected

ReadCommand(java.lang.String table, java.nio.ByteBuffer key, QueryPath queryPath, byte cmdType)

Method Summary

abstract ReadCommand	copy()
MessageOut<ReadCommand>	createMessage()
abstract IDiskAtomFilter	filter()
java.lang.String	getColumnFamilyName()
protected AbstractType<?>	getComparator()
java.lang.String	getKeyspace()
abstract Row	getRow(Table table)
long	getTimeout()
boolean	isDigestQuery()
ReadCommand	maybeGenerateRetryCommand(RowDataResolver resolver, Row row)
void	maybeTrim(Row row)
void	setDigestQuery(boolean isDigestQuery)

Methods inherited from class java.lang.Object

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

Field Detail

CMD_TYPE_GET_SLICE_BY_NAMES

public static final byte CMD_TYPE_GET_SLICE_BY_NAMES

See Also:

Constant Field Values

CMD_TYPE_GET_SLICE

public static final byte CMD_TYPE_GET_SLICE

See Also:

Constant Field Values

serializer

public static final org.apache.cassandra.db.ReadCommandSerializer serializer

queryPath

public final QueryPath queryPath

table

public final java.lang.String table

key

public final java.nio.ByteBuffer key

commandType

protected final byte commandType

Constructor Detail

ReadCommand

protected ReadCommand(java.lang.String table,
                      java.nio.ByteBuffer key,
                      QueryPath queryPath,
                      byte cmdType)

Method Detail

createMessage

public MessageOut<ReadCommand> createMessage()

isDigestQuery

public boolean isDigestQuery()

setDigestQuery

public void setDigestQuery(boolean isDigestQuery)

getColumnFamilyName

public java.lang.String getColumnFamilyName()

copy

public abstract ReadCommand copy()

getRow

public abstract Row getRow(Table table)
                    throws java.io.IOException

Throws:

java.io.IOException

filter

public abstract IDiskAtomFilter filter()

getComparator

protected AbstractType<?> getComparator()

getKeyspace

public java.lang.String getKeyspace()

Specified by:

getKeyspace in interface IReadCommand

maybeGenerateRetryCommand

public ReadCommand maybeGenerateRetryCommand(RowDataResolver resolver,
                                             Row row)

maybeTrim

public void maybeTrim(Row row)

getTimeout

public long getTimeout()

Specified by:

getTimeout in interface IReadCommand