org.infinispan.commands.tx

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, TransactionBoundaryCommand, VisitableCommand, RemoteLockCommand, TransactionalRemoteLockCommand

Direct Known Subclasses:

TotalOrderVersionedPrepareCommand

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

Field Summary

Fields

Modifier and Type	Field and Description
static byte	COMMAND_ID

Fields inherited from class org.infinispan.commands.tx.PrepareCommand

modifications, notifier, onePhaseCommit, recoveryManager, retriedCommand

Fields inherited from class org.infinispan.commands.tx.AbstractTransactionBoundaryCommand

cacheName, globalTx, icf, invoker, txTable

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
byte	getCommandId() Used by marshallers to convert this command into an id for streaming.
EntryVersionsMap	getVersionsSeen()
boolean	isReturnValueExpected() If true, a return value will be provided when performed remotely.
void	readFrom(ObjectInput input) Reads this instance from the stream written by ReplicableCommand.writeTo(ObjectOutput).
void	setVersionsSeen(EntryVersionsMap versionsSeen)
String	toString()
void	writeTo(ObjectOutput output) Writes this instance to the ObjectOutput.

Methods inherited from class org.infinispan.commands.tx.PrepareCommand

acceptVisitor, copy, createContext, getAffectedKeys, getKeyLockOwner, getKeysToLock, getModifications, getRemoteTransaction, hasModifications, hasSkipLocking, hasZeroLockAcquisition, initialize, isOnePhaseCommit, isReplayEntryWrapping, isRetriedCommand, perform, setReplayEntryWrapping, setRetriedCommand

Methods inherited from class org.infinispan.commands.tx.AbstractTransactionBoundaryCommand

canBlock, equals, getCacheName, getGlobalTransaction, getOrigin, getTopologyId, hashCode, ignoreCommandOnStatus, init, invalidRemoteTxReturnValue, markTransactionAsRemote, readsExistingValues, setOrigin, setTopologyId, shouldInvoke, visitRemoteTransaction

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.infinispan.commands.VisitableCommand

alwaysReadsExistingValues

Methods inherited from interface org.infinispan.commands.ReplicableCommand

getParameters, setParameters

Field Detail

COMMAND_ID

public static final byte COMMAND_ID

See Also:

Constant Field Values

Constructor Detail

VersionedPrepareCommand

public VersionedPrepareCommand()

VersionedPrepareCommand

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

VersionedPrepareCommand

public VersionedPrepareCommand(String cacheName)

Method Detail

getVersionsSeen

public EntryVersionsMap getVersionsSeen()

setVersionsSeen

public void setVersionsSeen(EntryVersionsMap versionsSeen)

getCommandId

public byte getCommandId()

Description copied from interface: ReplicableCommand

Used by marshallers to convert this command into an id for streaming.

Specified by:

getCommandId in interface ReplicableCommand

Overrides:

getCommandId in class PrepareCommand

Returns:

the method id of this command. This is compatible with pre-2.2.0 MethodCall ids.

writeTo

public void writeTo(ObjectOutput output)
             throws IOException

Description copied from interface: ReplicableCommand

Writes this instance to the ObjectOutput.

Specified by:

writeTo in interface ReplicableCommand

Overrides:

writeTo in class PrepareCommand

Parameters:

output - the stream.

Throws:

IOException - if an error occurred during the I/O.

readFrom

public void readFrom(ObjectInput input)
              throws IOException,
                     ClassNotFoundException

Description copied from interface: ReplicableCommand

Reads this instance from the stream written by ReplicableCommand.writeTo(ObjectOutput).

Specified by:

readFrom in interface ReplicableCommand

Overrides:

readFrom in class PrepareCommand

Parameters:

input - the stream to read.

Throws:

IOException - if an error occurred during the I/O.

ClassNotFoundException - if it tries to load an undefined class.

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

toString

public String toString()

Overrides:

toString in class PrepareCommand