Concurrency conflicts solving for collaborative feature modeling

Most of current collaborative feature modeling systems use the token-passing method as its collaborative strategy that makes the collaborative design between multi-clients inflexible and inefficient. Based on the analysis of feature operation in collaborative environment, we propose a new method to solve the concurrency conflicts, an enhanced naming mechanism for collaborative feature modeling to preserve the design intensions, and a process for non-locked multi-client collaborative design. The algorithms have been implemented in a prototype system integrating C++, Java3D and VML, CORBA technologies. Flexibility and efficiency in collaborative feature modeling environment have been achieved in our system.