| A.Borgida: Language Features for Flexible Handling of Exceptions in Information Systems. ACM Transactions on Database Systems, Vol. 10, No. 4, pp. 565-603, December 1985. |
....Exceptional Events as First Class Objects. The idea that consists in representing each conceptual exception by a class and each of its concrete occurrences (what we call exceptional events) as an instance (an exception object) of that class can initially be found in Taxis [18] Zetalisp [17] or [1] and is now almost a consensus; all todays object oriented systems have integrated it. Let us shortly recall its main interests. Exceptions can be organized into a knowledge sharing inheritance hierarchy. It is possible trap different events with a single handler. Signalers can ....
A.Borgida: Language Features for Flexible Handling of Exceptions in Information Systems. ACM Transactions on Database Systems, Vol. 10, No. 4, pp. 565-603, December 1985.
....18: NR T Net Inscribed with Filter Tables n . Defining Exceptions and Exception Handling Mechanisms Exceptions are unusual, atypical, or unexpected situations which may occur in a business application. Their description should not disturb the description of the regular system behavior (cf. [Bor85]) In a nested relation transition net exceptional situations can be modeled by exceptional transitions having a special semantics: an exceptional situation is indicated by a marking, where the corresponding exceptional transition is enabled. However, an enabled exceptional transition will never ....
A. Borgida: Language features for flexible handling of exceptions in information systems, ACM Transactions on Database Systems, Vol. 10, No. 4, 1985, pp. 565-603
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A.Borgida: Language Features for Flexible Handling of Exceptions in Information Systems.ACM Transactions on Database Systems, Vol. 10, No. 4, pp. 565-603, December 1985.
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