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IEICE TRANSACTIONS on Information

A Labeled Transition Model A-LTS for History-Based Aspect Weaving and Its Expressive Power

Isao YAGI, Yoshiaki TAKATA, Hiroyuki SEKI

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Summary :

This paper proposes an event-based transition system called A-LTS. An A-LTS is a simple system consisting of two agents, a basic program and a monitor. The monitor observes the behavior of the basic program and if the behavior matches some pre-defined pattern, then the monitor interrupts the execution of the basic program and possibly triggers the execution of another specific program. An A-LTS models a common feature found in recent software technologies such as Aspect-Oriented Programming (AOP), history-based access control and active database. We investigate the expressive power of A-LTS and show that it is strictly stronger than finite state machines and strictly weaker than pushdown automata (PDA). This implies that the model checking problem for A-LTS is decidable. It is also shown that the expressive power of A-LTS, linear context-free grammar and deterministic PDA are mutually incomparable. We also discuss the relationship between A-LTS and pointcut/advice in AOP.

Publication
IEICE TRANSACTIONS on Information Vol.E90-D No.5 pp.799-807
Publication Date
2007/05/01
Publicized
Online ISSN
1745-1361
DOI
10.1093/ietisy/e90-d.5.799
Type of Manuscript
PAPER
Category
Automata and Formal Language Theory

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