org.infinispan.query.indexmanager

Class IndexUpdateCommand

java.lang.Object

org.infinispan.commands.remote.BaseRpcCommand

org.infinispan.query.indexmanager.IndexUpdateCommand

All Implemented Interfaces:

CacheRpcCommand, ReplicableCommand, CustomQueryCommand

public class IndexUpdateCommand
extends BaseRpcCommand
implements ReplicableCommand, CustomQueryCommand

Custom RPC command containing an index update request for the Master IndexManager of a specific cache & index.

Author:

Sanne Grinovero

Field Summary

Fields

Modifier and Type	Field and Description
static byte	COMMAND_ID

Fields inherited from class org.infinispan.commands.remote.BaseRpcCommand

cacheName

Constructor Summary

Constructors

Constructor and Description
IndexUpdateCommand(String cacheName)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canBlock() If true, the command is processed asynchronously in a thread provided by an Infinispan thread pool.
void	fetchExecutionContext(CommandInitializer ci) This is invoked only on the receiving node, before perform(InvocationContext)
byte	getCommandId() Used by marshallers to convert this command into an id for streaming.
Object[]	getParameters() Used by marshallers to stream this command across a network
boolean	isReturnValueExpected() If true, a return value will be provided when performed remotely.
Object	perform(InvocationContext ctx) Performs the primary function of the command.
void	setIndexName(String indexName)
void	setParameters(int commandId, Object[] parameters) Used by the CommandsFactory to create a command from raw data read off a stream.
void	setSerializedWorkList(byte[] serializedModel)

Methods inherited from class org.infinispan.commands.remote.BaseRpcCommand

getCacheName, getOrigin, setOrigin, toString

Methods inherited from class java.lang.Object

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

Field Detail

COMMAND_ID

public static final byte COMMAND_ID

See Also:

Constant Field Values

Constructor Detail

IndexUpdateCommand

public IndexUpdateCommand(String cacheName)

Method Detail

perform

public Object perform(InvocationContext ctx)
               throws Throwable

Description copied from interface: ReplicableCommand

Performs the primary function of the command. Please see specific implementation classes for details on what is performed as well as return types. Important: this method will be invoked at the end of interceptors chain. It should never be called directly from a custom interceptor.

Specified by:

perform in interface ReplicableCommand

Parameters:

ctx - invocation context

Returns:

arbitrary return value generated by performing this command

Throws:

Throwable - in the event of problems.

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

Returns:

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

getParameters

public Object[] getParameters()

Description copied from interface: ReplicableCommand

Used by marshallers to stream this command across a network

Specified by:

getParameters in interface ReplicableCommand

Returns:

an object array of arguments, compatible with pre-2.2.0 MethodCall args.

setParameters

public void setParameters(int commandId,
                 Object[] parameters)

Description copied from interface: ReplicableCommand

Used by the CommandsFactory to create a command from raw data read off a stream.

Specified by:

setParameters in interface ReplicableCommand

Parameters:

commandId - command id to set. This is usually unused but *could* be used in the event of a command having multiple IDs, such as PutKeyValueCommand.

parameters - object array of args

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

Returns:

true or false

canBlock

public boolean canBlock()

Description copied from interface: ReplicableCommand

If true, the command is processed asynchronously in a thread provided by an Infinispan thread pool. Otherwise, the command is processed directly in the JGroups thread.

This feature allows to avoid keep a JGroups thread busy that can originate discard of messages and retransmissions. So, the commands that can block (waiting for some state, acquiring locks, etc.) should return true.

Specified by:

canBlock in interface ReplicableCommand

Overrides:

canBlock in class BaseRpcCommand

Returns:

true if the command can block/wait, false otherwise

fetchExecutionContext

public void fetchExecutionContext(CommandInitializer ci)

This is invoked only on the receiving node, before perform(InvocationContext)

Specified by:

fetchExecutionContext in interface CustomQueryCommand

setSerializedWorkList

public void setSerializedWorkList(byte[] serializedModel)

setIndexName

public void setIndexName(String indexName)