if (!message.containsKey(COLLECTION)) {
throw new Exception(MISSING_COLLECTION_PARAM);
}
Collection col = getCollection((String) message.get(COLLECTION));
String[] list = col.listIndexers();
Vector indexers = new Vector();
for (int i = 0; (list != null) && (i < list.length); i++) {
indexers.addElement(list[i]);
}