Added method to get groups for a user, added method to get provider.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@3527 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/wildfire/group/GroupManager.java

@@ -192,6 +192,16 @@ public class GroupManager {
         return groups;
     }
 
+    /**
+     * Returns an iterator for all groups that the User is a member of.
+     *
+     * @param user the user.
+     * @return all groups the user belongs to.
+     */
+    public Collection<Group> getGroups(User user) {
+        return getGroups(XMPPServer.getInstance().createJID(user.getUsername(), null));
+    }
+
     /**
      * Returns an iterator for all groups that the entity with the specified JID is a member of.
      *
@@ -205,6 +215,16 @@ public class GroupManager {
         return groups;
     }
 
+    /**
+     * Returns the configured group provider. Note that this method has special access
+     * privileges since only a few certain classes need to access the provider directly.
+     *
+     * @return the group provider.
+     */
+    GroupProvider getProvider() {
+        return provider;
+    }
+
     /**
      * Caches groups present in the specified collection that are not already cached and
      * ensures correct identity of already cached groups.