+ //! Store a Message in the backlog.
+ /** \note This method is threadsafe.
+ *
+ * \param msg The message object to be stored
+ * \return The globally unique id for the stored message
+ */
+ static MsgId storeMessage(const Message &message);
+
+ //! Request a certain number (or all) messages stored in a given buffer.
+ /** \note This method is threadsafe.
+ *
+ * \param buffer The buffer we request messages from
+ * \param lastmsgs The number of messages we would like to receive, or -1 if we'd like all messages from that buffername
+ * \param offset Do not return (but DO count) messages with MsgId >= offset, if offset >= 0
+ * \return The requested list of messages
+ */
+ static QList<Message> requestMsgs(UserId user, BufferId buffer, int lastmsgs = -1, int offset = -1);
+
+ //! Request messages stored in a given buffer since a certain point in time.
+ /** \note This method is threadsafe.
+ *
+ * \param buffer The buffer we request messages from
+ * \param since Only return messages newer than this point in time
+ * \param offset Do not return messages with MsgId >= offset, if offset >= 0
+ * \return The requested list of messages
+ */
+ static QList<Message> requestMsgs(UserId user, BufferId buffer, QDateTime since, int offset = -1);
+
+ //! Request a range of messages stored in a given buffer.
+ /** \note This method is threadsafe.
+ *
+ * \param buffer The buffer we request messages from
+ * \param first Return messages with first <= MsgId <= last
+ * \param last Return messages with first <= MsgId <= last
+ * \return The requested list of messages
+ */
+ static QList<Message> requestMsgRange(UserId user, BufferId buffer, int first, int last);
+
+ //! Request a list of all buffers known to a user.
+ /** This method is used to get a list of all buffers we have stored a backlog from.
+ * \note This method is threadsafe.
+ *
+ * \param user The user whose buffers we request
+ * \return A list of the BufferInfos for all buffers as requested
+ */
+ static QList<BufferInfo> requestBuffers(UserId user);
+
+
+ //! Request a list of BufferIds for a given NetworkId
+ /** \note This method is threadsafe.
+ *
+ * \param user The user whose buffers we request
+ * \param networkId The NetworkId of the network in question
+ * \return List of BufferIds belonging to the Network
+ */
+ static QList<BufferId> requestBufferIdsForNetwork(UserId user, NetworkId networkId);
+
+ //! Remove permanently a buffer and it's content from the storage backend
+ /** This call cannot be reverted!
+ * \note This method is threadsafe.
+ *
+ * \param user The user who is the owner of the buffer
+ * \param bufferId The bufferId
+ * \return true if successfull
+ */
+ static bool removeBuffer(const UserId &user, const BufferId &bufferId);
+
+ //! Rename a Buffer
+ /** \note This method is threadsafe.
+ * \param user The id of the buffer owner
+ * \param networkId The id of the network the buffer belongs to
+ * \param newName The new name of the buffer
+ * \param oldName The previous name of the buffer
+ * \return the BufferId of the affected buffer or an invalid BufferId if not successfull
+ */
+ static BufferId renameBuffer(const UserId &user, const NetworkId &networkId, const QString &newName, const QString &oldName);
+
+ //! Update the LastSeenDate for a Buffer
+ /** This Method is used to make the LastSeenDate of a Buffer persistent
+ * \note This method is threadsafe.
+ *
+ * \param user The Owner of that Buffer
+ * \param bufferId The buffer id
+ * \param MsgId The Message id of the message that has been just seen
+ */
+ static void setBufferLastSeenMsg(UserId user, const BufferId &bufferId, const MsgId &msgId);