Class GetKeyValueCommand

java.lang.Object

org.infinispan.commands.read.AbstractDataCommand

org.infinispan.commands.read.GetKeyValueCommand

All Implemented Interfaces:

DataCommand, FlagAffectedCommand, LocalCommand, CacheRpcCommand, ReplicableCommand, SegmentSpecificCommand, TopologyAffectedCommand, TracedCommand, VisitableCommand, VersionAware

public class GetKeyValueCommand
extends AbstractDataCommand
implements LocalCommand

Implements functionality defined by Map.get(Object) and Map.containsKey(Object) operations

Since:

4.0

Author:

Manik Surtani (manik@jboss.org)

Nested Class Summary

Nested classes/interfaces inherited from interface VisitableCommand

VisitableCommand.LoadType

Field Summary

Fields inherited from class AbstractDataCommand

cacheName, key, origin, segment, spanAttributes, topologyId

Fields inherited from interface VisitableCommand

log

Constructor Summary

Constructors

Constructor	Description
GetKeyValueCommand(ByteString cacheName, Object key, int segment, long flagsBitSet)

Method Summary

Modifier and Type	Method	Description
Object	acceptVisitor(InvocationContext ctx, Visitor visitor)	Accept a visitor, and return the result of accepting this visitor.
VisitableCommand.LoadType	loadType()
NodeVersion	supportedSince()	Returns a NodeVersion representing the Infinispan version in which this command was added.
String	toString()

Methods inherited from class AbstractDataCommand

equals, getCacheName, getFlagsBitSet, getFlagsWithoutRemote, getKey, getOrigin, getSegment, getSpanAttributes, getTopologyId, getWrappedKey, hashCode, isReturnValueExpected, printFlags, setFlagsBitSet, setKey, setOrigin, setSpanAttributes, setTopologyId

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface FlagAffectedCommand

addFlags, getFlags, hasAllFlags, hasAnyFlag

Methods inherited from interface ReplicableCommand

getCommandId, isSuccessful, logThrowable, readFrom, writeTo

Methods inherited from interface TracedCommand

getOperationName

Methods inherited from interface VisitableCommand

init, invokeAsync

Constructor Details

GetKeyValueCommand

public GetKeyValueCommand(ByteString cacheName,
 Object key,
 int segment,
 long flagsBitSet)

Method Details

acceptVisitor

public Object acceptVisitor(InvocationContext ctx,
 Visitor visitor)
                     throws Throwable

Description copied from interface: VisitableCommand

Accept a visitor, and return the result of accepting this visitor.

Specified by:

acceptVisitor in interface VisitableCommand

Parameters:

ctx - invocation context

visitor - visitor to accept

Returns:

arbitrary return value

Throws:

Throwable - in the event of problems

loadType

public VisitableCommand.LoadType loadType()

Specified by:

loadType in interface VisitableCommand

Returns:

Nodes on which the command needs to read the previous values of the keys it acts on.

supportedSince

public NodeVersion supportedSince()

Description copied from interface: ReplicableCommand

Returns a NodeVersion representing the Infinispan version in which this command was added. This value is used to ensure that when the cluster contains different Infinispan versions, only commands compatible with the oldest version are transmitted.

Abstract classes should not implement this method as the version should be specific to an individual implementation. Similarly, implementations which extend another ReplicableCommand should always override this method.

Specified by:

supportedSince in interface ReplicableCommand

Specified by:

supportedSince in interface VersionAware

Returns:

a NodeVersion corresponding to the Infinispan version this command was added.

toString

public String toString()

Overrides:

toString in class AbstractDataCommand