System modelling using Object-Oriented Pr / T-Nets

Considering two popular system modelling frameworks, namely Petri Nets and object-oriented modelling, we can find an interesting relation between them. Petri Nets on the one hand are wellknown for their capabilities specifying system dynamics in an easy but formal way, whereas the main criticism raised against Petri Nets includes complexity and monolithical appearance of nets representing real-world systems. On the other hand object-oriented modelling offers good means for system structuring by defining interfaces for interacting modules. What most popular object-oriented modelling frameworks lack is formal specification of system dynamics, using e.g. natural language or state-transition diagrams instead. From this point of view Petri Nets and object-oriented concepts perfectly complement each other, as advantages of one modelling framework are well-known disadvantages of the other and vice versa. This paper introduces Object-Oriented Pr/T-Nets (OOPr/T-Nets), a new approach for the synthesis of object-oriented concepts and Petri Nets, aiming to overcome the drawbacks of already existing proposals.

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