Objects as actors assuming roles in the environment

Tetsuo Tamai, Naoyasu Ubayashi, Ryoichi Ichiyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)


To achieve the goal of realizing object adaptation to environments, a new role-based model Epsilon and a language EpsilonJ are proposed. In Epsilon, an environment is defined as a field of collaboration between roles and an object adapts to the environment assuming one of the roles. Objects can freely enter or leave environments and belong to multiple environments at a time so that dynamic adaptation or evolution of objects is realized. Environments and roles are the first class constructs at runtime as well as at model description time so that separation of concerns is not only materialized as a static structure but also observable as behaviors. Environments encapsulating collaboration are independent reuse components to be deployed separately from objects. In this paper, the Epsilon model and the language are explained with some examples. The effectiveness of the model is illustrated by a case study on the problem of integrated systems. Implementation of the language is also reported.

Original languageEnglish
Title of host publicationSoftware Engineering for Multi-Agent Systems V - Research Issues and Practical Applications
PublisherSpringer Verlag
Number of pages19
ISBN (Print)9783540731306
Publication statusPublished - 2007
Externally publishedYes
Event5th Workshop on Software Engineering for Large-Scale Multi-Agent Systems, SELMAS 2006 - Shanghai, China
Duration: May 1 2006May 1 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4408 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other5th Workshop on Software Engineering for Large-Scale Multi-Agent Systems, SELMAS 2006

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)


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