+ private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Resource component, Resource literal) throws DatabaseException {
+ if(component != null) {
+ Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(component));
+ if(type != null) {
+ Resource root = graph.syncRequest(new IndexRoot(type));
+ return Pair.make(type, root);
+ } else {
+ Resource doc = graph.syncRequest(new PossibleTypedParent(component, DocumentationResource.getInstance(graph).Document));
+ Resource componentType = graph.getSingleType(doc);
+ Resource root = graph.syncRequest(new IndexRoot(doc));
+ return Pair.make(componentType, root);
+ }
+ // TODO: For Antti to consider and fix later
+ // Introduced to handle procedural user components where component == null
+ } else if (literal != null) {
+ Resource root = graph.syncRequest(new IndexRoot(literal));
+ return Pair.make(null, root);
+ } else {
+ throw new DatabaseException("Couldn't resolve component type and root for component == null && literal == null");
+ }
+ //throw new IllegalStateException();
+ }