Flexible Exception Handling in Process Support Systems

نویسندگان

  • Claus Hagen
  • Gustavo Alonso
چکیده

Exceptions are one of the most pervasive problems in process support systems In instal lations expected to handle a large number of processes having exceptions is bound to be a normal occurrence Any programming tool intended for large complex applications has to face this problem However current process support systems despite their orientation towards complex distributed and heterogeneous applications provide almost no support for exception handling This paper shows how exible mechanisms for failure handling are incorporated into the OPERA process support system using a combination of programming language concepts and transaction processing techniques The resulting mechanisms allow the construction of fault tolerant work ow processes in a transparent and exible way while ensuring reusability of work ow components

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تاریخ انتشار 1998