org.infinispan.commands.control
Class RehashControlCommand

java.lang.Object
  extended by org.infinispan.commands.remote.BaseRpcCommand
      extended by org.infinispan.commands.control.RehashControlCommand
All Implemented Interfaces:
CacheRpcCommand, ReplicableCommand

public class RehashControlCommand
extends BaseRpcCommand

A control command to coordinate rehashes that may occur when nodes join or leave a cluster, when DIST is used as a cache mode.

Since:
4.0
Author:
Manik Surtani

Nested Class Summary
static class RehashControlCommand.Type
           
 
Field Summary
static int COMMAND_ID
           
 
Fields inherited from class org.infinispan.commands.remote.BaseRpcCommand
cacheName
 
Constructor Summary
RehashControlCommand()
           
RehashControlCommand(String cacheName, RehashControlCommand.Type type, Address sender, Map<Object,InternalCacheValue> state, ConsistentHash consistentHash)
           
RehashControlCommand(Transport transport)
           
 
Method Summary
 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
 void init(DistributionManager distributionManager, Configuration configuration, DataContainer dataContainer)
           
 Object perform(InvocationContext ctx)
          Performs the primary function of the command.
 Map<Object,InternalCacheValue> pullState()
           
 Object pushState()
           
 void setParameters(int commandId, Object[] parameters)
          Used by the CommandsFactory to create a command from raw data read off a stream.
 String toString()
           
 
Methods inherited from class org.infinispan.commands.remote.BaseRpcCommand
getCacheName
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

COMMAND_ID

public static final int COMMAND_ID
See Also:
Constant Field Values
Constructor Detail

RehashControlCommand

public RehashControlCommand(String cacheName,
                            RehashControlCommand.Type type,
                            Address sender,
                            Map<Object,InternalCacheValue> state,
                            ConsistentHash consistentHash)

RehashControlCommand

public RehashControlCommand()

RehashControlCommand

public RehashControlCommand(Transport transport)
Method Detail

init

public void init(DistributionManager distributionManager,
                 Configuration configuration,
                 DataContainer dataContainer)

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.

Parameters:
ctx - invocation context
Returns:
arbitrary return value generated by performing this command
Throws:
Throwable - in the event of problems.

pullState

public Map<Object,InternalCacheValue> pullState()
                                         throws CacheLoaderException
Throws:
CacheLoaderException

pushState

public Object pushState()

getCommandId

public byte getCommandId()
Description copied from interface: ReplicableCommand
Used by marshallers to convert this command into an id for streaming.

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

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.

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

toString

public String toString()
Overrides:
toString in class Object

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