public Set<SReference> findUsages(Set<SNode> nodes) {
if (!myFindUsagesSupported) return Collections.emptySet();
if (myNeedSearchForStrings) {
Set<String> strings = new HashSet<String>();
for (SNode node : nodes) {
strings.add(quoteSpecialXMLCharacters(node.getId()));
}
if (!myModelRootManager.containsSomeString(myModelDescriptor, strings))
return Collections.emptySet();
}
SModel model = myModelDescriptor.getSModel();
if (model == null) return Collections.emptySet();
Set<SReference> result = new HashSet<SReference>();
for (SNode root : model.roots()) {
addUsages(root, nodes, result);
}
return result;
}
public boolean hasUsages(Set<SModelReference> models) {
if (!myFindUsagesSupported) return false;
if (myNeedSearchForStrings) {
Set<String> strings = new HashSet<String>();
for (SModelReference model : models) {
strings.add(quoteSpecialXMLCharacters(model.toString()));
}
if (!myModelRootManager.containsSomeString(myModelDescriptor, strings)) return false;
}
SModel model = myModelDescriptor.getSModel();
if (model == null) return false;
for (SModelDescriptor modelDescriptor :
SModelOperations.allImportedModels(model, GlobalScope.getInstance())) {
if (models.contains(modelDescriptor.getSModelReference())) {
return true;
}
}
return false;
}