public static List<EReference> filterByContainerMetaclass(
Collection<EReference> eReferences, NodeReference nodeReference, boolean containmentOnly) {
EClass containerMetaClass = null;
EClass targetMetaClass = null;
if (nodeReference instanceof ChildReference) {
containerMetaClass = ((ChildReference) nodeReference).getParentNode().getDomainMetaElement();
} else if (nodeReference instanceof TopNodeReference) {
CanvasMapping diagram = ((Mapping) nodeReference.eContainer()).getDiagram();
if (diagram != null) {
containerMetaClass = diagram.getDomainMetaElement();
}
}
if (nodeReference.isSetChild()) {
targetMetaClass = nodeReference.getChild().getDomainMetaElement();
}
List<EReference> fromHierarchy =
sort(
getEReferences(
getEStructuralFeaturesOf(eReferences, containerMetaClass), containmentOnly));
if (targetMetaClass == null) {
// no child known, thus can take references from metaelement's hierarchy only
return fromHierarchy;
}
List<EReference> targetsToChild =
sort(getEReferences(getEReferencesOfType(eReferences, targetMetaClass), containmentOnly));
for (Iterator<EReference> it = targetsToChild.iterator(); it.hasNext(); ) {
if (fromHierarchy.contains(it.next())) {
it.remove();
}
}
ArrayList<EReference> rv =
new ArrayList<EReference>(fromHierarchy.size() + targetsToChild.size());
rv.addAll(fromHierarchy);
rv.addAll(targetsToChild);
return rv;
}
