pool::RootCollection Node1 pool::RootCollection - m_description - m_name - m_fileName - m_containerPrefix - m_mode - m_open - m_storageSvc - m_fileDescr - m_containerMap + RootCollection() + ~RootCollection() + open() + insertRow() + commit() + close() + description() + cursor() - RootCollection() - operator=() - writeColumn() Node2 pool::ICollection   + open() + initNewRow() + insertRow() + commit() + close() + description() + cursor() + ~ICollection() Node2->Node1 Node3 pool::APRMessaging   + APRMessaging() + APRMessaging() + operator=() + APRMessaging() + operator=() Node3->Node1 Node4 AthMessaging - m_nm - m_msg_tls - m_imsg - m_lvl - ATLAS_THREAD_SAFE + AthMessaging() + AthMessaging() + ~AthMessaging() + msgLvl() + msg() + msg() + setLevel() - AthMessaging() - AthMessaging() - operator=() - initMessaging() Node4->Node3