/** @return the number of distinct articles that this article links to */
public int getDistinctLinksOutCount() {
DbPageLinkCounts lc = env.getDbPageLinkCounts().retrieve(id);
if (lc == null) return 0;
else return lc.getDistinctLinksOut();
}
/** @return the total number of links that are made to this article */
public int getTotalLinksInCount() {
DbPageLinkCounts lc = env.getDbPageLinkCounts().retrieve(id);
if (lc == null) return 0;
else return lc.getTotalLinksIn();
}