/**
* Deletes all privacy lists of a user. This may be necessary when a user is being deleted from
* the system.
*
* @param username the username of the list owner.
*/
public void deletePrivacyLists(String username) {
for (String listName : provider.getPrivacyLists(username).keySet()) {
// Remove the list from the cache
listsCache.remove(getCacheKey(username, listName));
// Trigger event that a privacy list is being deleted
for (PrivacyListEventListener listener : listeners) {
listener.privacyListDeleting(listName);
}
}
// Delete user privacy lists from the DB
provider.deletePrivacyLists(username);
}
/**
* Creates a new privacy list for the specified user.
*
* @param username the username of the list owner.
* @param listName the name of the new privacy list.
* @param listElement the XML that specifies the list and its items.
* @return the newly created PrivacyList.
*/
public PrivacyList createPrivacyList(String username, String listName, Element listElement) {
// Create new list
PrivacyList list = new PrivacyList(username, listName, false, listElement);
// Add new list to cache
listsCache.put(getCacheKey(username, listName), list);
// Save new list to database
provider.createPrivacyList(username, list);
// Trigger event that a new privacy list has been created
for (PrivacyListEventListener listener : listeners) {
listener.privacyListCreated(list);
}
return list;
}
/**
* Deletes an existing privacy list of a user. If the privacy list being deleted was the default
* list then the user will end up with no default list. Therefore, the user will have to set a new
* default list.
*
* @param username the username of the list owner.
* @param listName the name of the list being deleted.
*/
public void deletePrivacyList(String username, String listName) {
// Trigger event that a privacy list is being deleted
for (PrivacyListEventListener listener : listeners) {
listener.privacyListDeleting(listName);
}
// Remove the list from the cache
listsCache.remove(getCacheKey(username, listName));
// Delete the privacy list from the DB
provider.deletePrivacyList(username, listName);
// Check if deleted list was the default list
PrivacyList defaultList = listsCache.get(getDefaultCacheKey(username));
if (defaultList != null && listName.equals(defaultList.getName())) {
listsCache.remove(getDefaultCacheKey(username));
}
}
void dispatchModifiedEvent(PrivacyList privacyList) {
// Trigger event that a privacy list has been modified
for (PrivacyListEventListener listener : listeners) {
listener.privacyListModified(privacyList);
}
}
