Class VersionedPrepareCommand

java.lang.Object

org.infinispan.commands.tx.AbstractTransactionBoundaryCommand

org.infinispan.commands.tx.PrepareCommand

org.infinispan.commands.tx.VersionedPrepareCommand

All Implemented Interfaces:

CacheRpcCommand, ReplicableCommand, TopologyAffectedCommand, TracedCommand, TransactionBoundaryCommand, VisitableCommand, VersionAware, RemoteLockCommand, TransactionalRemoteLockCommand

@ProtoTypeId(1246)
public class VersionedPrepareCommand
extends PrepareCommand

Same as PrepareCommand except that the transaction originator makes evident the versions of entries touched and stored in a transaction context so that accurate write skew checks may be performed by the lock owner(s).

Since:

5.1

Author:

Manik Surtani

Nested Class Summary

Nested classes/interfaces inherited from interface VisitableCommand

VisitableCommand.LoadType

Field Summary

Fields inherited from class PrepareCommand

modifications, onePhaseCommit, retriedCommand

Fields inherited from class AbstractTransactionBoundaryCommand

cacheName, globalTx

Constructor Summary

Constructors

Constructor	Description
VersionedPrepareCommand(ByteString cacheName, GlobalTransaction gtx, List<WriteCommand> modifications, boolean onePhase)

Method Summary

Modifier and Type	Method	Description
Map<Object, IncrementableEntryVersion>	getVersionsSeen()
boolean	isReturnValueExpected()	If true, a return value will be provided when performed remotely.
void	setVersionsSeen(Map<Object, IncrementableEntryVersion> versionsSeen)
NodeVersion	supportedSince()	Returns a NodeVersion representing the Infinispan version in which this command was added.
String	toString()

Methods inherited from class PrepareCommand

acceptVisitor, createContext, getAffectedKeys, getKeyLockOwner, getKeysToLock, getModifications, hasModifications, hasSkipLocking, hasZeroLockAcquisition, invokeAsync, isOnePhaseCommit, isReplayEntryWrapping, isRetriedCommand, setReplayEntryWrapping, setRetriedCommand

Methods inherited from class AbstractTransactionBoundaryCommand

equals, getCacheName, getGlobalTransaction, getOrigin, getTopologyId, hashCode, invalidRemoteTxReturnValue, loadType, markTransactionAsRemote, setOrigin, setTopologyId, visitRemoteTransaction

Methods inherited from class Object

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

Methods inherited from interface ReplicableCommand

getCommandId, isSuccessful, logThrowable, readFrom, writeTo

Methods inherited from interface TracedCommand

getOperationName, getSpanAttributes, setSpanAttributes

Methods inherited from interface VisitableCommand

init

Constructor Details

VersionedPrepareCommand

public VersionedPrepareCommand(ByteString cacheName,
 GlobalTransaction gtx,
 List<WriteCommand> modifications,
 boolean onePhase)

Method Details

getVersionsSeen

public Map<Object, IncrementableEntryVersion> getVersionsSeen()

setVersionsSeen

public void setVersionsSeen(Map<Object, IncrementableEntryVersion> versionsSeen)

isReturnValueExpected

public boolean isReturnValueExpected()

Description copied from interface: ReplicableCommand

If true, a return value will be provided when performed remotely. Otherwise, a remote ResponseGenerator may choose to simply return null to save on marshalling costs.

Specified by:

isReturnValueExpected in interface ReplicableCommand

Overrides:

isReturnValueExpected in class PrepareCommand

Returns:

true or false

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

Overrides:

supportedSince in class PrepareCommand

Returns:

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

toString

public String toString()

Overrides:

toString in class PrepareCommand