org.eclipse.viatra.query.runtime.api

Interface ViatraQueryModelUpdateListener

public interface ViatraQueryModelUpdateListener

Listener interface for model changes affecting different levels of the VIATRA Query architecture.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ViatraQueryModelUpdateListener.ChangeLevel Possible notification levels for changes

Method Summary

Modifier and Type	Method and Description
ViatraQueryModelUpdateListener.ChangeLevel	getLevel() This may be queried only ONCE (!!!) at the registration of the listener.
void	notifyChanged(ViatraQueryModelUpdateListener.ChangeLevel changeLevel) Called after each change with also sending the level of change.

Method Detail

notifyChanged

void notifyChanged(ViatraQueryModelUpdateListener.ChangeLevel changeLevel)

Called after each change with also sending the level of change. Only called if the change level is at least at the level returned by getLevel().

Parameters:

changeLevel -

getLevel

ViatraQueryModelUpdateListener.ChangeLevel getLevel()

This may be queried only ONCE (!!!) at the registration of the listener. NOTE: this allows us to only create engine level change providers if there is someone who needs it.

Returns:

the change level where you want notifications