}
private void rolling_to_back(){
for (int i = 0;i < resources.size();i++){
Resource r = (Resource)resources.elementAt(i);
Vote v = (Vote)votes.elementAt(i);
try {
if (v == null){
r.rollback();
} else {
if (v.value() == Vote._VoteCommit){
r.rollback();
}
}
} catch(HeuristicCommit hc) {
throw new org.omg.CORBA.NO_IMPLEMENT();