Exception handling using task deferral in document-driven workflow systems

Jianrui Wang, Akhil Kumar

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

This paper analyzes various causes of exceptions at the task level in a workflow system. Conventional control flow based workflow systems mix hard constraints like data dependencies between tasks with soft constraints like business rules. Thus, they lack flexibility and are not suitable for ad hoc workflow applications where exceptions arise frequently. We first show that document-driven workflow systems are more suitable for such environments. Second, we propose an exception handling mechanism based on task deferral in document-driven workflow systems and give an algorithm for implementing it. Our work is particularly relevant for real-time workflows with deadlines.

Original languageEnglish (US)
Pages165-170
Number of pages6
StatePublished - Jan 1 2005
Event15th Workshop on Information Technology and Systems, WITS 2005 - Las Vegas, NV, United States
Duration: Dec 10 2005Dec 11 2005

Other

Other15th Workshop on Information Technology and Systems, WITS 2005
CountryUnited States
CityLas Vegas, NV
Period12/10/0512/11/05

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Industry

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Control and Systems Engineering

Cite this

Wang, J., & Kumar, A. (2005). Exception handling using task deferral in document-driven workflow systems. 165-170. Paper presented at 15th Workshop on Information Technology and Systems, WITS 2005, Las Vegas, NV, United States.
Wang, Jianrui ; Kumar, Akhil. / Exception handling using task deferral in document-driven workflow systems. Paper presented at 15th Workshop on Information Technology and Systems, WITS 2005, Las Vegas, NV, United States.6 p.
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Wang, J & Kumar, A 2005, 'Exception handling using task deferral in document-driven workflow systems', Paper presented at 15th Workshop on Information Technology and Systems, WITS 2005, Las Vegas, NV, United States, 12/10/05 - 12/11/05 pp. 165-170.

Exception handling using task deferral in document-driven workflow systems. / Wang, Jianrui; Kumar, Akhil.

2005. 165-170 Paper presented at 15th Workshop on Information Technology and Systems, WITS 2005, Las Vegas, NV, United States.

Research output: Contribution to conferencePaper

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AB - This paper analyzes various causes of exceptions at the task level in a workflow system. Conventional control flow based workflow systems mix hard constraints like data dependencies between tasks with soft constraints like business rules. Thus, they lack flexibility and are not suitable for ad hoc workflow applications where exceptions arise frequently. We first show that document-driven workflow systems are more suitable for such environments. Second, we propose an exception handling mechanism based on task deferral in document-driven workflow systems and give an algorithm for implementing it. Our work is particularly relevant for real-time workflows with deadlines.

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Wang J, Kumar A. Exception handling using task deferral in document-driven workflow systems. 2005. Paper presented at 15th Workshop on Information Technology and Systems, WITS 2005, Las Vegas, NV, United States.