Separation of Concerns in Mobile Agent Applications

  • Naoyasu Ubayashi
  • Tetsuo Tamai
Conference paper

DOI: 10.1007/3-540-45429-2_7

Part of the Lecture Notes in Computer Science book series (LNCS, volume 2192)
Cite this paper as:
Ubayashi N., Tamai T. (2001) Separation of Concerns in Mobile Agent Applications. In: Yonezawa A., Matsuoka S. (eds) Metalevel Architectures and Separation of Crosscutting Concerns. Reflection 2001. Lecture Notes in Computer Science, vol 2192. Springer, Berlin, Heidelberg

Abstract

Using mobile agent systems, cooperative distributed applications that run over the Internet can be constructed flexibly.However, there are some problems: it is difficult to understand collaborations among agents and travels of individual agents as a whole because mobility/collaboration functions tend to be intertwined in the code; it is difficult to define behaviors of agents explicitly because they are influenced by their external context dynamically.Man y aspects of mobility/ collaboration strategies including traveling, coordination constraints, synchronization constraints and security-checking strategies should be considered when mobile agent applications are constructed.

In this paper, the concept of RoleEP(Role Based Evolutionary Programming) is proposed in order to alleviate these problems.In RoleEP, a field where a group of agents roam around hosts and collaborate with each other is regarded as an environment and mobility/collaboration functions that an agent should assume in an environment are defined as roles. An object becomes an agent by binding itself to a role that is defined in an environment, and acquires mobility/collaboration functions dynamically. RoleEP provides a mechanism for separating concerns about mobility/collaboration into environments and a systematic evolutionary programming style.Distributed applications based on mobile agent systems, which may change their functions dynamically in order to adapt themselves to their external context, can be constructed by synthesizing environments dynamically.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Naoyasu Ubayashi
    • 1
  • Tetsuo Tamai
    • 2
  1. 1.Systems Integration Technology CenterToshiba CorporationTokyoJapan
  2. 2.Graduate School of Arts and SciencesUniversity of TokyoTokyoJapan

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