/**
* Sets the delayed reference.
*
* @param reference the reference
* @param modelAdapter the model handler
* @param contextByElement the context by element
* @return <code>true</code> if the reference was resolved successfully, <code>false</code> else.
* @throws ModelAdapterException the model handler exception
* @throws ModelElementCreationException
*/
@Override
public boolean setDelayedReference(
DelayedReference reference,
IModelAdapter modelAdapter,
ContextManager contextManager,
ObservableInjectingParser parser)
throws ModelAdapterException, ModelElementCreationException {
Object contextElement = reference.getContextElement();
if (contextElement instanceof IModelElementProxy) {
IModelElementProxy proxyContext = (IModelElementProxy) contextElement;
contextElement = proxyContext.getRealObject();
}
return setDelayedReferenceWithPredicate(
reference, modelAdapter, contextManager, contextElement, parser);
}
private ModelElementProxy produceSingleForeachUsingParserRule(
ObservableInjectingParser parser, DelayedReference reference, Object next, String ruleName)
throws NoSuchMethodException, UnknownProductionRuleException, IllegalAccessException,
InvocationTargetException, ModelElementCreationException {
// invoke the parser to execute the template
Method methodToCall = parser.getClass().getMethod(ruleName);
// parser.reset();
if (!Modifier.isFinal(methodToCall.getModifiers())) {
throw new UnknownProductionRuleException(
ruleName + " is not a production rule in generated Parser.");
}
boolean originalResolveProxiesValue = parser.isResolveProxies();
parser.setResolveProxies(false);
DelegationParsingObserver delegator = new DelegationParsingObserver();
IParsingObserver originalObserver = parser.getObserver();
if (originalObserver != null) {
delegator.addParsingObserver(originalObserver);
}
delegator.addParsingObserver(new ForeachParsingObserver((TextBlock) reference.getTextBlock()));
parser.setObserver(delegator);
IModelElementProxy proxyForContextElement = null;
if (reference.getContextElement() instanceof IModelElementProxy) {
proxyForContextElement = (IModelElementProxy) reference.getContextElement();
} else {
proxyForContextElement = new ResolvedModelElementProxy(reference.getContextElement());
}
parser.setCurrentForeachElement(next);
if (parser.getContextManager().getContextForElement(reference.getContextElement()) == null) {
parser.addContext(proxyForContextElement);
if (proxyForContextElement.getRealObject() != null
&& reference.getContextElement() instanceof EObject) {
parser
.getContextManager()
.notifyProxyResolvedWith(
proxyForContextElement,
reference.getContextElement(),
/*
* no creation context element needs to be provided here because the proxy has just been created and has not been
* added to any other context
*/
null);
}
} else {
parser
.getCurrentContextStack()
.push(proxyForContextElement); // the Context object was already created elsewhere
}
try {
ModelElementProxy parseReturn = (ModelElementProxy) methodToCall.invoke(parser);
if (parseReturn == null) {
throw new ModelElementCreationException(
"Unable to create model element using parse rule "
+ ruleName
+ ". Parse errors: "
+ parser.getInjector().getErrorList());
}
return parseReturn;
} finally {
parser.getCurrentContextStack().pop();
parser.setObserver(originalObserver);
parser.setResolveProxies(originalResolveProxiesValue);
}
}