The generated code is also efficient: it supports multi-thread-based concurrency, and the (static and dynamic) efficiency of generated code is improved compared to considered approaches. The traced execution results comply with the standard and are a good hint that the execution is semantically correct. The code generated with our approach has been executed with a set of state-machine examples that are part of a test-suite described in the recent OMG standard Precise Semantics Of State Machine. It extends IF-ELSE-SWITCH constructions of programming languages with concurrency support. This paper provides a pattern and tool for complete and efficient code generation approach from UML State Machine. However, existing generation approaches and tools from UML State Machines are still limited to simple cases, especially when considering concurrency and pseudo states such as history, junction, and event types. In Model Driven Engineering, executable code can be automatically generated from state machines. The UML State Machine and its visualizations are a powerful means to the modeling of the logical behavior of such an architecture.
The proposed approach makes elegant handling of most of the statechart features.Īn event-driven architecture is a useful way to design and implement complex systems. We also propose an approach to implement signal and time events, guards and branches and internal transitions. By representing states as objects, we extend the state design pattern to implement the hierarchical states using the concept of object composition and delegation. This paper proposes an approach to generate readable, efficient and compact executable code from the UML statechart diagram in an object-oriented (OO) language like Java using design patterns. Most of the approaches for implementing UML statecharts diagram either suffer from maintenance problems or implement only a subset of UML statecharts. There is not a one-to-one mapping between a statechart and its implementation. There exists a gap between high level modeling language and a programming language. The UML statechart diagrams include many concepts that are not present in most popular programming languages, like Java or C++. The Unified Modeling Language (UML) statechart diagram is used for modeling the dynamic aspects of systems.
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