void add(Node gNode, Node node) {
NodeTable gt = graph.get(gNode);
if (gt == null) {
gt = new NodeTable();
graph.put(gNode, gt);
}
if (!gt.containsKey(node)) {
gt.put(node, EntityImpl.create(gNode, node));
}
}
Iterable<Entity> getNodes() {
MetaIterator<Entity> meta = null;
for (NodeTable gt : graph.values()) {
if (meta == null) meta = new MetaIterator<Entity>(gt.values());
else meta.next(gt.values());
}
if (meta == null) return new ArrayList<Entity>();
return meta;
}
Iterable<Entity> getNodes(Node gNode) {
NodeTable gt = graph.get(gNode);
if (gt == null) return new ArrayList<Entity>();
return gt.values();
}
void clear() {
graph.clear();
}
int size() {
return graph.size();
}
