public Node addNode(TMSPrincipal principal) {
// TODO Auto-generated method stub
Node1 n1 = nodes.getNode1(principal);
if (null == n1) {
n1 = new Node1(principal, this);
nodes.addNode1(n1);
}
boolean f = false;
for (int i = 0; i < headNum; i++) {
if (head[i].getFirst().equals(n1)) f = true;
}
if (false == f) addHead(n1);
return n1;
}
