Pessimistic Predicate/Transform Model for Long Running Business Processes  

作　　者：汪锦岭 金蓓弘 李京 

机构地区：[1]Institute of Software, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Tsinghua Science and Technology》2005年第3期288-297,共10页清华大学学报（自然科学版（英文版）

基　　金：Supported by the National Key Basic Research and Development (973) Program of China (No. 2002CB312005), and the National High-Tech Research and Development (863) Program of China (No. 2003AA115440)

摘　　要：Many business processes in enterprise applications are both long running and transactional in nature. However, no current transaction model can provide full transaction support for such long running business processes. This paper proposes a new transaction model, the pessimistic predicate/transform (PP/T) model, which can provide full transaction support for long running business processes. A framework was proposed on the enterprise JavaBeans platform to implement the PP/T model. The framework enables application developers to focus on the business logic, with the underlying platform providing the required transactional semantics. The development and maintenance effort are therefore greatly reduced. Simulations show that the model has a sound concurrency management ability for long running business processes.Many business processes in enterprise applications are both long running and transactional in nature. However, no current transaction model can provide full transaction support for such long running business processes. This paper proposes a new transaction model, the pessimistic predicate/transform (PP/T) model, which can provide full transaction support for long running business processes. A framework was proposed on the enterprise JavaBeans platform to implement the PP/T model. The framework enables application developers to focus on the business logic, with the underlying platform providing the required transactional semantics. The development and maintenance effort are therefore greatly reduced. Simulations show that the model has a sound concurrency management ability for long running business processes.

关 键 词：long duration transaction extended transaction model transaction processing middleware 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]