private void addKeyword(Hashtable table, Keyword word, Keyword parent) {
boolean recurse = true;
if (table.containsKey(word)) recurse = false;
if (parent == null) table.put(word, String.valueOf(-1));
else table.put(word, parent);
if (recurse) {
Iterator it = word.getChildren().iterator();
while (it.hasNext()) {
addKeyword(table, (Keyword) it.next(), word);
}
}
}
