mirrormap.commands
Class AddCommand

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

All Implemented Interfaces:

Serializable, ICommand

Direct Known Subclasses:

UpdateCommand

public class AddCommand
extends AbstractCommand

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

Author:

Ramon Servadei

See Also:

Serialized Form

Field Summary

protected Serializable

value The value the command applies to

Fields inherited from class mirrormap.commands.AbstractCommand

key, mirrorMapName

Constructor Summary

AddCommand()

AddCommand(String mirrorMapName, Serializable key, Serializable value)

Method Summary

void	execute() Execute the command
protected boolean	shouldExecute(MirrorMap<Serializable,Serializable> mirrorMap) Determines whether the command should be executed.

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

Field Detail

value

protected Serializable value

The value the command applies to

Constructor Detail

AddCommand

public AddCommand()

AddCommand

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

Method Detail

execute

public final void execute()

Description copied from interface: ICommand

Execute the command

shouldExecute

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

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)

Parameters:

mirrorMap - the mirror map affected

Returns:

true if this command should be executed