Enterprise Application Integration deals with the problem of connecting heterogeneous applications, and is the centerpiece of current on-premise, cloud and device integration scenarios. For integration scenarios, structurally correct composition of patterns into processes and improvements of integration processes are crucial. In order to achieve this, we formalize compositions of integration patterns based on their characteristics, and describe optimization strategies that help to reduce the model complexity, and improve the process execution efficiency using design time techniques. Using the formalism of timed DB-nets - a refinement of Petri nets - we model integration logic features such as control- and data flow, transactional data storage, compensation and exception handling, and time aspects that are present in reoccurring solutions as separate integration patterns. We then propose a realization of optimization strategies using graph rewriting, and prove that the optimizations we consider preserve both structural and functional correctness. We evaluate the improvements on a real-world catalog of pattern compositions, containing over 900 integration processes, and illustrate the correctness properties in case studies based on two of these processes.

翻译：企业应用集成处理异构应用连接问题，是当前本地、云端及设备集成场景的核心。对于集成场景而言，模式的结构正确组合及集成过程的改进至关重要。为此，我们基于集成模式的特征形式化其组合方式，并描述通过设计时技术降低模型复杂度、提升流程执行效率的优化策略。借助定时DB-net（一种Petri网的精化形式），我们将集成逻辑特性（如控制流与数据流、事务性数据存储、补偿与异常处理及时间方面）建模为可重复出现解决方案中的独立集成模式。随后，我们提出基于图重写的优化策略实现方案，并证明所考虑的优化既能保持结构正确性又能保持功能正确性。我们基于包含900多个集成过程的真实模式组合目录评估改进效果，并通过两个过程的案例研究说明正确性属性。