/**
* Creates a SPARQL representation of the query, sends it to Sesame, and returns descriptions of
* any matching resources.
*
* @param user User ID
* @param time Time it took the user to construct the query
* @return AnchorInfo[][], feedback texts describing the search results, or null if the user's
* session is expired
*/
public AnchorInfo[][] getSPARQL(String user, long time) {
if (!userMap.containsKey(user)) return null;
LiberSession session = userMap.get(user);
synchronized (session) {
return session.getSPARQL(time);
}
}
