Reducing Exception Handling Complexity in Business Process Modeling and Implementation: The WED-Flow Approach.
ABSTRACT Today’s enterprises reevaluate and adjust their business processes at a very high frequency, which presents a non-trivial
challenge to classic BPM methodology. In particular, the dynamic nature of exception handling may generate highly significant
costs when business processes are modeled and implemented statically based on formal frameworks (e.g., process algebra and
Petri nets). In this work we introduce the WED-flow (Workflow, Event processing, and Data-flow) approach, a novel concept
for modeling and implementation of business processes that significantly reduces the complexity of exception handling—quantitatively,
as compared to current approaches. WED-flows explicitly integrate events, data, conditions, and transitions by capturing data
instances (future, current, and historical) as data states, which enables incremental business process development. More generally,
this paper provides a conceptual basis and guidelines for capturing, processing, and storing event-handling environments.
Consequently, information systems that implement business processes as WED-flows are truly dynamic and no longer time-invariant
SourceAvailable from: Kelly Rosa Braghetto[Show abstract] [Hide abstract]
ABSTRACT: O crescimento da demanda pela informatização e automação de processos tem levado cada vez mais pesquisadores e empresas a estudar formas de implementar e melhorar sistemas computacionais utilizando processos de negócio e seus sistemas de gestão. Um aspecto essencial para a execução consistente de instâncias de um processo de negócio é o tratamento de exceções, que garante que falhas e situações imprevistas serão tratadas adequadamente. Neste trabalho, apresentaremos o gerenciador de recuperação da abordagem de gerenciamento de processos de negócio WED-fl ow. Apoiado sobre a modelagem evolutiva, que conjuga trabalho, eventos e dados de forma integrada, e sobre as garantias transacionais proporcinadas pela abordagem WED-fl ow, o sistema de recuperação permite um tratamento de exceções flexível e preciso.Proceedings of the 27th Brazilian Symposium on Databases; 10/2012
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ABSTRACT: Building mission critical applications and services (e.g. e-commerce) using process-oriented approaches has had successes and difficulties. These applications automated successfully the important frequent cases such as purchases, but the code needed for handling exceptions such as cancellations and failures tend to grow to disproportionate size and complexity. These difficulties lead to non-automated and expensive solutions such as call centers, which resolve data inconsistency problems manually. In this paper we describe the WED-flow (work, event, and data-flow) approach, which provides transactional recovery through incremental evolution of exception handling, by combining the concepts of advanced transaction models, events, and data states. By carefully recording the detailed data states of each execution step, WED-flow composes backward and forward recovery mechanisms as reusable exception handling services to preserve the consistency of all databases involved in the application with well-defined correctness properties. A practical application of the automated recovery in WED-flow is the real-time recovery of failed cases for mission-critical applications and services.2012 IEEE 19th International Conference on Web Services (ICWS); 01/2012
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ABSTRACT: Business process systems have received increased attention from research and industry communities specially in order to guarantee transaction properties. Despite of the significant efforts in new transactional models and software tools developed, the business processes still offer a scenario with several theorical and practical challenges. In this article, we present an implementation of a transaction model based on WED(Work, Event and Data)-flow approach. WED-flow combines the concepts of business step composition, advanced transaction models, events, and data states in order to provide transactional support for business process systems. More concretely, our WED-flow implementation supports important aspects of business process systems such as: correct execution, integrity of business process instances in parallel execution, traceability, and recovery mechanisms.