offline_EventStorage_v5::DataBuffer Node1 offline_EventStorage _v5::DataBuffer + DataBuffer() + DataBuffer() + ~DataBuffer() + realloc() + grow() + handle() + buffersize() - DataBuffer() - operator=() Node2 CompressionBuffer Node2->Node1 Node3 offline_EventStorage _v5::DataBuffer::implementation - m_buffer - m_buffersize + implementation() + implementation() + implementation() + operator=() + ~implementation() + realloc() + grow() + handle() + buffersize() Node3->Node1 -m_rep