LEAD++: An Object-Oriented Reflective Language for Dynamically Adaptable Software Model

Noriki AMANO; Takuo WATANABE

LEAD++: An Object-Oriented Reflective Language for Dynamically Adaptable Software Model

Noriki AMANO, Takuo WATANABE

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A software system has dynamic adaptability if it can adapt itself to dynamically changing runtime environments. As open-ended distributed systems and mobile computing systems have spread widely, the need for software systems with dynamic adaptability increases. We propose a software model with dynamic adaptability called DAS and its description language LEAD++. The basic mechanism for dynamic adaptability is called adaptable procedure. An adaptable procedure is a special kind of generic procedures (functions) whose methods are selected based upon the state of its runtime environment. Furthermore, control mechanisms of adaptable procedures -- including method selection strategies -- are realized using generic procedures. This sort of reflective architecture enables us to write a dynamically adaptable software system in highly flexible, extensible, readable and maintainable way. LEAD++ is an object-oriented reflective language that provides adaptable procedures and their control mechanisms as its basic language functionalities. We are currently implementing a prototype of LEAD++ as a pre-processor of Java. Using LEAD++, we can systematically describe dynamically adaptable applets, mobile objects, etc.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E82-A No.6 pp.1009-1016

Publication Date: 1999/06/25

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Type of Manuscript: Special Section PAPER (Special Section of Papers Selected from 1998 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC '98))

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Noriki AMANO, Takuo WATANABE, "LEAD++: An Object-Oriented Reflective Language for Dynamically Adaptable Software Model" in IEICE TRANSACTIONS on Fundamentals, vol. E82-A, no. 6, pp. 1009-1016, June 1999, doi: .
Abstract: A software system has dynamic adaptability if it can adapt itself to dynamically changing runtime environments. As open-ended distributed systems and mobile computing systems have spread widely, the need for software systems with dynamic adaptability increases. We propose a software model with dynamic adaptability called DAS and its description language LEAD++. The basic mechanism for dynamic adaptability is called adaptable procedure. An adaptable procedure is a special kind of generic procedures (functions) whose methods are selected based upon the state of its runtime environment. Furthermore, control mechanisms of adaptable procedures -- including method selection strategies -- are realized using generic procedures. This sort of reflective architecture enables us to write a dynamically adaptable software system in highly flexible, extensible, readable and maintainable way. LEAD++ is an object-oriented reflective language that provides adaptable procedures and their control mechanisms as its basic language functionalities. We are currently implementing a prototype of LEAD++ as a pre-processor of Java. Using LEAD++, we can systematically describe dynamically adaptable applets, mobile objects, etc.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e82-a_6_1009/_p

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@ARTICLE{e82-a_6_1009,
author={Noriki AMANO, Takuo WATANABE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={LEAD++: An Object-Oriented Reflective Language for Dynamically Adaptable Software Model},
year={1999},
volume={E82-A},
number={6},
pages={1009-1016},
abstract={A software system has dynamic adaptability if it can adapt itself to dynamically changing runtime environments. As open-ended distributed systems and mobile computing systems have spread widely, the need for software systems with dynamic adaptability increases. We propose a software model with dynamic adaptability called DAS and its description language LEAD++. The basic mechanism for dynamic adaptability is called adaptable procedure. An adaptable procedure is a special kind of generic procedures (functions) whose methods are selected based upon the state of its runtime environment. Furthermore, control mechanisms of adaptable procedures -- including method selection strategies -- are realized using generic procedures. This sort of reflective architecture enables us to write a dynamically adaptable software system in highly flexible, extensible, readable and maintainable way. LEAD++ is an object-oriented reflective language that provides adaptable procedures and their control mechanisms as its basic language functionalities. We are currently implementing a prototype of LEAD++ as a pre-processor of Java. Using LEAD++, we can systematically describe dynamically adaptable applets, mobile objects, etc.},
keywords={},
doi={},
ISSN={},
month={June},}

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TY - JOUR
TI - LEAD++: An Object-Oriented Reflective Language for Dynamically Adaptable Software Model
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1009
EP - 1016
AU - Noriki AMANO
AU - Takuo WATANABE
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E82-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 1999
AB - A software system has dynamic adaptability if it can adapt itself to dynamically changing runtime environments. As open-ended distributed systems and mobile computing systems have spread widely, the need for software systems with dynamic adaptability increases. We propose a software model with dynamic adaptability called DAS and its description language LEAD++. The basic mechanism for dynamic adaptability is called adaptable procedure. An adaptable procedure is a special kind of generic procedures (functions) whose methods are selected based upon the state of its runtime environment. Furthermore, control mechanisms of adaptable procedures -- including method selection strategies -- are realized using generic procedures. This sort of reflective architecture enables us to write a dynamically adaptable software system in highly flexible, extensible, readable and maintainable way. LEAD++ is an object-oriented reflective language that provides adaptable procedures and their control mechanisms as its basic language functionalities. We are currently implementing a prototype of LEAD++ as a pre-processor of Java. Using LEAD++, we can systematically describe dynamically adaptable applets, mobile objects, etc.
ER -