@Override
public boolean addEdge(Integer edge, Pair<? extends Role> endpoints, EdgeType edgeType) {
this.validateEdgeType(edgeType);
Pair<Role> new_endpoints = getValidatedEndpoints(edge, endpoints);
if (new_endpoints == null) return false;
Role source = new_endpoints.getFirst();
Role dest = new_endpoints.getSecond();
if (findEdge(source, dest) != null) return false;
if (makesCycle(source, dest)) {
return false;
}
edges.put(edge, new_endpoints);
if (!vertices.containsKey(source)) this.addVertex(source);
if (!vertices.containsKey(dest)) this.addVertex(dest);
// map source of this edge to <dest, edge> and vice versa
vertices.get(source).getSecond().put(dest, edge);
vertices.get(dest).getFirst().put(source, edge);
// new edge, role map has unsaved changes
map.setSaved(false);
return true;
}
@Override
public boolean removeVertex(Role vertex) {
// vertex removed, role map has unsaved changes
map.setSaved(false);
return super.removeVertex(vertex);
}
@Override
public boolean removeEdge(Integer edge) {
// edge removed, role map has unsaved changes
map.setSaved(false);
return super.removeEdge(edge);
}
@Override
public boolean addVertex(Role vertex) {
// new vertex, role map has unsaved changes
map.setSaved(false);
return super.addVertex(vertex);
}