/**
* Returns a Group by name.
*
* @param name The name of the group to retrieve
* @return The group corresponding to that name
* @throws GroupNotFoundException if the group does not exist.
*/
public Group getGroup(String name) throws GroupNotFoundException {
Group group = (Group) groupCache.get(name);
// If ID wan't found in cache, load it up and put it there.
if (group == null) {
synchronized (name.intern()) {
group = (Group) groupCache.get(name);
// If ID wan't found in cache, load it up and put it there.
if (group == null) {
group = provider.getGroup(name);
groupCache.put(name, group);
}
}
}
return group;
}
/**
* Returns the roster for the given username.
*
* @param username the username to search for.
* @return the roster associated with the ID.
* @throws org.jivesoftware.messenger.user.UserNotFoundException if the ID does not correspond to
* a known entity on the server.
*/
public Roster getRoster(String username) throws UserNotFoundException {
if (rosterCache == null) {
rosterCache = CacheManager.getCache("username2roster");
}
if (rosterCache == null) {
throw new UserNotFoundException("Could not load caches");
}
Roster roster = (Roster) rosterCache.get(username);
if (roster == null) {
// Not in cache so load a new one:
roster = new Roster(username);
rosterCache.put(username, roster);
}
if (roster == null) {
throw new UserNotFoundException(username);
}
return roster;
}