Represents the index maintained on the model.
The context of the engine is instantiated by the scope, and provides information and services regarding the model the towards the engine.
This interface contains callbacks for various internal errors from the
Listener interface for lightweight observation of changes in edges leaving from given source instance elements.
Listener interface for change notifications from the IncQuery Base index.
Defines a scope for the IncQuery engine, which determines the set of model elements that query evaluation operates on.