mirrormap.commands
Class UpdateCommand

java.lang.Object
  mirrormap.commands.AbstractCommand
      mirrormap.commands.AddCommand
          mirrormap.commands.UpdateCommand

All Implemented Interfaces:

Serializable, ICommand

public final class UpdateCommand
extends AddCommand

Encapsulates a command to put a key-value entry into a MirrorMap.

Author:

Ramon Servadei

See Also:

Serialized Form

Field Summary

Fields inherited from class mirrormap.commands.AddCommand

value

Fields inherited from class mirrormap.commands.AbstractCommand

key, mirrorMapName

Constructor Summary

UpdateCommand()

UpdateCommand(String mirrorMapName, Serializable key, Serializable value)

Method Summary

protected boolean

shouldExecute(MirrorMap<Serializable,Serializable> mirrorMap) Determines whether the command should be executed.

Methods inherited from class mirrormap.commands.AddCommand

execute

Methods inherited from class mirrormap.commands.AbstractCommand

getBytes, getMirrorMapName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateCommand

public UpdateCommand()

UpdateCommand

public UpdateCommand(String mirrorMapName,
                     Serializable key,
                     Serializable value)

Method Detail

shouldExecute

protected boolean shouldExecute(MirrorMap<Serializable,Serializable> mirrorMap)

Description copied from class: AddCommand

Determines whether the command should be executed. This exists to prevent the source of a change from re-applying it when it receives the same change back from the mirror map server (all peers receive the same change, even the originating one)

Overrides:

shouldExecute in class AddCommand

Parameters:

mirrorMap - the mirror map affected

Returns:

true if this command should be executed