/**
* Returns a collection with all the groups that the user may include in his roster. The following
* criteria will be used to select the groups: 1) Groups that are configured so that everybody can
* include in his roster, 2) Groups that are configured so that its users may include the group in
* their rosters and the user is a group user of the group and 3) User belongs to a Group that may
* see a Group that whose members may include the Group in their rosters.
*
* @param user the user to return his shared groups.
* @return a collection with all the groups that the user may include in his roster.
*/
public Collection<Group> getSharedGroups(User user) {
Collection<Group> answer = new HashSet<Group>();
Collection<Group> groups = GroupManager.getInstance().getGroups();
for (Group group : groups) {
String showInRoster = group.getProperties().get("sharedRoster.showInRoster");
if ("onlyGroup".equals(showInRoster)) {
if (group.isUser(user.getUsername())) {
// The user belongs to the group so add the group to the answer
answer.add(group);
} else {
// Check if the user belongs to a group that may see this group
Collection<Group> groupList =
parseGroups(group.getProperties().get("sharedRoster.groupList"));
for (Group groupInList : groupList) {
if (groupInList.isUser(user.getUsername())) {
answer.add(group);
}
}
}
} else if ("everybody".equals(showInRoster)) {
// Anyone can see this group so add the group to the answer
answer.add(group);
}
}
return answer;
}
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;
}