| 摘要 |
PROBLEM TO BE SOLVED: To realize state transition management capable of simply changing the definition of 'probable state', 'transition' or 'operation at transition' even at necessary when an information management system performs state transition management. SOLUTION: To a request for state transition from a user, the instance of an objective model module obtains state instance from state manager instance, obtains transition instance from the state instance by an information processor, gives a class name to the transition instance and requests transition propriety information and operation information at transition. When definition is not made, obtaining of the information is tried to a high-order class in itself until definition is made. Based on this definition, operation is carried out, the state instance name of itself is obtained from the transition instance to update it to a state instance name in a new state. |
