[furcas-discussion] Reference Re-Evaluation Algorithm

[Stephan Erb]

> > PS: Thomas, we might need your help with all this textblocks magic
> > (e.g.
> > find out if a reference is still bound). Expect some questions on the
> > mailing list rather soon :-)
> 
> I found that out myself. In this case it was an easy reverse lookup on DocumentNode_SequenceElement using the OppositeEndFinder API.

Hi Axel, 

I just had a (very) short look at the OCLQueryPropertyUpdate. Is there a
reason why the 'referencedElements' aren't checked anywhere? I always
thought that those entail the crucial information whether a token is
bound to something or not.

Example from the MOIN code base where used them:

    private Collection<?> findCurrentlySetElements(DelayedReference unresolvedRef, ModelInjector modelInjector,
	    LexedToken tokenInCurrentConnection) throws ModelAdapterException {

	Collection<?> valueCollection = modelInjector.getModelAdapter().get(unresolvedRef.getModelElement(), unresolvedRef.getPropertyName());
	if (tokenInCurrentConnection != null) {
	    valueCollection.retainAll(tokenInCurrentConnection.getReferencedElements());
	}
	return valueCollection;
    }

Best,
Stephan