@Override
public int compareTo(DocumentMetadata o) {
// don't use static comparators since we may get bounced back here
if (getTitle().equals(o.getTitle()) == false) {
return getTitle().compareTo(o.getTitle());
}
if (getAuthor().equals(o.getAuthor()) == false) {
return getAuthor().compareTo(o.getAuthor());
}
if (getPubDate().equals(o.getPubDate()) == false) {
return getPubDate().compareTo(o.getPubDate());
}
return Integer.compare(hashCode(), o.hashCode()); // give up
}
