de.saxsys.synchronizefx.core.metamodel

Interface TopologyLayerCallback

public interface TopologyLayerCallback

This is an callback interface for the meta model. The meta model uses it to inform the underlying layer on several events like new commands that have to be transfered to other peers or that an error occurred in the meta model layer.

Author:

Raik Bieniek

Method Summary

Methods

Modifier and Type	Method and Description
void	domainModelChanged(Object root) Called when the domain model has changed.
void	onError(SynchronizeFXException error) Called when an error occurred in the meta model layer.
void	sendCommands(List<Command> commands) Called when the meta model layer has produced commands that need to be shared with other meta models.

Method Detail

sendCommands

void sendCommands(List<Command> commands)

Called when the meta model layer has produced commands that need to be shared with other meta models.

This method should not block as this may could block the GUI thread. The order of the commands passed in sequential calls to this methods however needs to be retained.

When you've called MetaModel.commandsForDomainModel(CommandsForDomainModelCallback) to get the initial domain model for a new peer, you don't need to send the commands from this method to this peer as long as your callback CommandsForDomainModelCallback.commandsReady(List) has not been called. They are incorporated automatically.

Parameters:

commands - The commands that need to be shared.

domainModelChanged

void domainModelChanged(Object root)

Called when the domain model has changed. This method is most probably called only once. That is when the initial domain model has been transfered completely to a peer.

Parameters:

root - The root object of the new domain model.

onError

void onError(SynchronizeFXException error)

Called when an error occurred in the meta model layer. If an error occurred, synchronicity between clients can no longer be guaranteed. In some cases the meta model can still be used and the error be ignored.

Parameters:

error - The exception that caused the error.