Collection<String> getSharedUsersForRoster(Group group, Roster roster) {
String showInRoster = group.getProperties().get("sharedRoster.showInRoster");
String groupNames = group.getProperties().get("sharedRoster.groupList");
// Answer an empty collection if the group is not being shown in users' rosters
if (!"onlyGroup".equals(showInRoster) && !"everybody".equals(showInRoster)) {
return new ArrayList<String>();
}
// Add the users of the group
Collection<String> users = new HashSet<String>(group.getMembers());
users.addAll(group.getAdmins());
// Check if anyone can see this shared group
if ("everybody".equals(showInRoster)) {
// If the user of the roster belongs to the public group then we should return all users
// in the system since they all need to be in the roster with subscription "from"
if (group.isUser(roster.getUsername())) {
// Add all users in the system
for (User user : UserManager.getInstance().getUsers()) {
users.add(user.getUsername());
}
}
} else {
// Add the users that may see the group
Collection<Group> groupList = parseGroups(groupNames);
for (Group groupInList : groupList) {
users.addAll(groupInList.getMembers());
users.addAll(groupInList.getAdmins());
}
}
return users;
}
/**
* This method is similar to {@link #getAffectedUsers(Group)} except that it receives some group
* properties. The group properties are passed as parameters since the called of this method may
* want to obtain the related users of the group based in some properties values.
*
* <p>This is useful when the group is being edited and some properties has changed and we need to
* obtain the related users of the group based on the previous group state.
*/
private Collection<String> getAffectedUsers(Group group, String showInRoster, String groupNames) {
// Answer an empty collection if the group is not being shown in users' rosters
if (!"onlyGroup".equals(showInRoster) && !"everybody".equals(showInRoster)) {
return new ArrayList<String>();
}
// Add the users of the group
Collection<String> users = new HashSet<String>(group.getMembers());
users.addAll(group.getAdmins());
// Check if anyone can see this shared group
if ("everybody".equals(showInRoster)) {
// Add all users in the system
for (User user : UserManager.getInstance().getUsers()) {
users.add(user.getUsername());
}
// Add all logged users. We don't need to add all users in the system since only the
// logged ones will be affected.
// users.addAll(SessionManager.getInstance().getSessionUsers());
} else {
// Add the users that may see the group
Collection<Group> groupList = parseGroups(groupNames);
for (Group groupInList : groupList) {
users.addAll(groupInList.getMembers());
users.addAll(groupInList.getAdmins());
}
}
return users;
}
private void removeSharedGroupFromRoster(Group group, String username) {
// Get the group users to remove from the user's roster
Collection<String> users = new HashSet<String>(group.getMembers());
users.addAll(group.getAdmins());
// Get the roster of the user from which we need to remove the shared group users
Roster userRoster = (Roster) CacheManager.getCache("username2roster").get(username);
// Iterate on all the group users and update their rosters
for (String userToRemove : users) {
// Get the roster to update
Roster roster = (Roster) CacheManager.getCache("username2roster").get(userToRemove);
// Only update rosters in memory
if (roster != null) {
roster.deleteSharedUser(group, username);
}
// Update the roster of the user
if (userRoster != null) {
try {
User user = UserManager.getInstance().getUser(userToRemove);
Collection<Group> groups = GroupManager.getInstance().getGroups(user);
userRoster.deleteSharedUser(userToRemove, groups, group);
} catch (UserNotFoundException e) {
}
}
}
}
/**
* Notification that a Group user has been added. Update the group users' roster accordingly.
*
* @param group the group where the user was added.
* @param addedUser the username of the user that has been added to the group.
*/
private void groupUserAdded(Group group, String addedUser) {
// Get all the affected users
Collection<String> users = getAffectedUsers(group);
// Get the roster of the added user.
Roster addedUserRoster = (Roster) CacheManager.getCache("username2roster").get(addedUser);
// Iterate on all the affected users and update their rosters
for (String userToUpdate : users) {
if (!addedUser.equals(userToUpdate)) {
// Get the roster to update
Roster roster = (Roster) CacheManager.getCache("username2roster").get(userToUpdate);
// Only update rosters in memory
if (roster != null) {
roster.addSharedUser(group, addedUser);
}
// Update the roster of the newly added group user.
if (addedUserRoster != null) {
try {
User user = UserManager.getInstance().getUser(userToUpdate);
Collection<Group> groups = GroupManager.getInstance().getGroups(user);
addedUserRoster.addSharedUser(userToUpdate, groups, group);
} catch (UserNotFoundException e) {
}
}
}
}
}
/**
* Notification that a Group user has been deleted. Update the group users' roster accordingly.
*
* @param group the group from where the user was deleted.
* @param users the users to update their rosters
* @param deletedUser the username of the user that has been deleted from the group.
*/
private void groupUserDeleted(Group group, Collection<String> users, String deletedUser) {
// Get the roster of the deleted user.
Roster deletedUserRoster = (Roster) CacheManager.getCache("username2roster").get(deletedUser);
// Iterate on all the affected users and update their rosters
for (String userToUpdate : users) {
// Get the roster to update
Roster roster = (Roster) CacheManager.getCache("username2roster").get(userToUpdate);
// Only update rosters in memory
if (roster != null) {
roster.deleteSharedUser(group, deletedUser);
}
// Update the roster of the newly deleted group user.
if (deletedUserRoster != null) {
try {
User user = UserManager.getInstance().getUser(userToUpdate);
Collection<Group> groups = GroupManager.getInstance().getGroups(user);
deletedUserRoster.deleteSharedUser(userToUpdate, groups, group);
} catch (UserNotFoundException e) {
}
}
}
}