/**
* Deletes a group from the system.
*
* @param group the group to delete.
*/
public void deleteGroup(Group group) {
// Fire event.
GroupEventDispatcher.dispatchEvent(
group, GroupEventDispatcher.EventType.group_deleting, Collections.emptyMap());
// Delete the group.
provider.deleteGroup(group.getName());
// Expire all relevant caches.
groupCache.remove(group.getName());
}
/**
* Factory method for creating a new Group. A unique name is the only required field.
*
* @param name the new and unique name for the group.
* @return a new Group.
* @throws GroupAlreadyExistsException if the group name already exists in the system.
*/
public Group createGroup(String name) throws GroupAlreadyExistsException {
synchronized (name.intern()) {
Group newGroup = null;
try {
getGroup(name);
// The group already exists since now exception, so:
throw new GroupAlreadyExistsException();
} catch (GroupNotFoundException unfe) {
// The group doesn't already exist so we can create a new group
newGroup = provider.createGroup(name);
groupCache.put(name, newGroup);
// Fire event.
GroupEventDispatcher.dispatchEvent(
newGroup, GroupEventDispatcher.EventType.group_created, Collections.emptyMap());
}
return newGroup;
}
}