Publication pub = docs[0].getPublication();
SiteManager siteManager = null;
ServiceSelector selector = null;
try {
selector = (ServiceSelector) this.manager.lookup(SiteManager.ROLE + "Selector");
siteManager = (SiteManager) selector.select(pub.getSiteManagerHint());
Set nodes = new HashSet();
for (int i = 0; i < docs.length; i++) {
nodes.add(docs[i].getLink().getNode());
}