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european conference on object-oriented programming, ecoop 2000

作者： Vallecillo, Antonio Hernàndez, Juan Troya, José M. Universidad de Málaga Spain Universidad de Extremadura Spain

ISBN: (纸本)3540415130

This report summarizes the presentations, discussions, and outcomes of the ecoop’2000 Workshop on object Interoperability, held in Sophia Antipolis, France, on Monday, June 12, 2000. Divided into four main sessions, the workshop covered some of the most important issues related to object interoperability at different levels (such as protocols or semantics). This report has two main goals. First, it tries to provide a snapshot of some of the current research being carried out within the object-oriented community in these areas. And second, it summarizes some of the open questions and issues related to object interoperability, in order to set the basis for further research activities. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Interoperability

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Providing fine-grained access control for Java programs via binary editing

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CONCURRENCY-PRACTICE AND EXPERIENCE 2000年第14期12卷 1405-1430页

作者： Pandey, R Hashii, B Univ Calif Davis Dept Comp Sci Parallel & Distributed Comp Lab Davis CA 95616 USA

There is considerable interest in programs that can migrate from one host to another and execute, Mobile programs are appealing because they support efficient utilization of network resources and extensibility of information servers. However, since they cross administrative domains, they have the ability to access and possibly misuse a host's protected resources. In this paper, we present a novel approach for controlling and protecting a site's resources. In this approach, a site uses a declarative policy language to specify a set of constraints on accesses to resources, A set of code transformation tools enforces these constraints on mobile programs by integrating the access constraint checking code directly into the mobile program and resource definitions, Using this approach, a site does not need to explicitly include calls to reference monitors in order to protect resources. The performance analysis show that the approach performs better than reference monitor-based approaches in many cases. Copyright (C) 2000 John Wiley & Sons, Ltd.

关键词： security policy mobile code access control Java object orientation binary editing

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XML and object technology

XML and object technology

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european conference on object-oriented programming, ecoop 2000

作者： Catania, Barbara Ferrari, Elena Levy, Alon Meldelzon, Alberto O. Dipartimento di Informatica e Scienze dell’Informazione Università degli Studi di Genova Via Dodecaneso 35 Genova16146 Italy Dipartimento di Scienze dell’Informazione Università degli Studi di Milano Via Comelico 39/41 Milano20135 Italy Department of Computer Science and Engineering University of Washington SeattleWA98195 United States Department of Computer Science University of Toronto 6 King’s College Road TorontoON Canada

ISBN: (纸本)3540415130

The aim of the First ecoop Workshop on XML and object Technology was to bring together researchers working in the object oriented field to discuss how object-oriented technology can be exploited in data management solutions for XML [14] and which issues require new developments and further investigation. The workshop consisted of a number of presentations of reviewed papers and of discussions on various aspects related to the main topic of the workshop. © Springer-Verlag Berlin Heidelberg 2000.

关键词： XML

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Use-case driven method of architecture recovery for program understanding and reuse reengineering

Proceedings of the European Conference on Software Maintenan...

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Proceedings of the european conference on Software Maintenance and Reengineering, CSMR 2000年 23-31页

作者： Bojic, Dragan Velasevic, Dusan Univ of Belgrade Belgrade Serbia

This work focuses on architectural recovery for program understanding and reuse reengineering of legacy object-oriented systems. The proposed method is based on dynamic analysis of the system for the selected test cases that cover relevant use cases. The theory of formal concept analysis is applied to decompose the logical hierarchy of subsystems, so that parts of the system which implement similar functionality are grouped together.

关键词： Software engineering Computer software reusability Computer software selection and evaluation Legacy systems object oriented programming Reverse engineering Legacy object oriented systems Program understanding Reuse reengineering

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Panel session: Mobile code, Internet security, and e-commerce

Panel session: Mobile code, Internet security, and e-commerc...

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14th european conference on object oriented programming (ecoop 2000)

作者： Molva, R Baude, F Inst Eurecom F-06904 Sophia Antipolis France Univ Nice Sophia Antipolis CNRS INRIA F-06902 Sophia Antipolis France

ISBN: (纸本)3540415130

Security of e-applications running over Internet is a major requirement for their widespread use. As discussions in this panel often pointed it out, such kind of applications shows more and more a property of mobility: mobility of code, data, or even mobility of objects, termed agents. But how to enforce security of such mobile components ? Is it at the programming language level, or could it be managed in a completely transparent way for the programmer ? Do we need domain-specific languages that we hope could be trusted or are general-purpose languages enough ? This panel gave some highlights on how adequate the object-oriented language technology could be;at which level of granularity security has to be designed and introduced into the application;why solutions differing from classical cryptography-based solutions are promising.

关键词： object oriented programming

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Quality of service in distributed object systems

Quality of service in distributed object systems

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14th european conference on object oriented programming (ecoop 2000)

作者： Becker, C Zincky, J FB Informat Verteilte Syst & Betriebssyst D-60325 Frankfurt Germany BBN Technol Cambridge MA 02138 USA

ISBN: (纸本)3540415130

The suitability of the object-oriented programming model for implementing distributed systems has lead to middleware platforms, such as CORBA, DCOM, and Java/RMI. Originally, these middleware systems aimed at distribution transparency for Application programmers. However, distributed systems axe exposed to system issues, such as dynamic performance changes or partial errors, which prevent complete distribution transparency. Quality of Service (QoS) management addresses these system issues. The goal is to add QoS management to the interactions between clients and services. Support for QoS management in distributed object systems is a hot topic of current research which poses a number of open questions: How is QoS integrated with the object model that emphasizes encapsulation and information hiding? Can one build generic support frameworks for multiple QoS categories, in contrast to specialized, single category systems, such as TAO, Electra, Eternal, DOORS among others. Can QoS be viewed as an aspect in the sense of Aspect oriented programming (AOP) or are other classifications more appropriate? This ecoop-workshop has discussed the open questions and aimed at a summary of the state of the art in the field. The workshop stimulated discussions about how next generation QoS management facilities can be built into object infrastructures.

关键词： Quality of service

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Workshop on aspects and dimensions of concern: Requirements on, and challenge problems for, advanced separation of concerns

Workshop on aspects and dimensions of concern: Requirements ...

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european conference on object-oriented programming, ecoop 2000

作者： Tarr, Peri D'Hondt, Maja Bergmans, Lodewijk Lopes, Cristina Videira IBM Thomas J. Watson Research Center P.O. Box 704 YorktownNY10598 United States Vrije Universiteit Brussel Pleinlaan 2 Brussels1050 Belgium University of Twente Department of Computer Science P.O. Box 217 Enschede7500 AE Netherlands Xerox Palo Alto Research Center 3333 Coyote Hill Road Palo AltoCA94304 United States

ISBN: (纸本)3540415130

This document describes the results of the two-day Workshop on Aspects and Dimensions of Concern at ecoop 2000. The workshop produced the beginnings of a set of goals, requirements, and issues to be addressed by approaches to advanced separation of concerns. These goals and issues are encapsulated, in part, in a set of challenge problems that are intended to be solved by providers of advanced separation of concerns technologies. The challenge problems and requirements begin to define the boundaries of this problem domain and solution space, and they will help provide a basis for evaluating and comparing different solutions and solution approaches. © Springer-Verlag Berlin Heidelberg 2000.

关键词： object oriented programming

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Tools and environments for understanding object-oriented concepts

Tools and environments for understanding object-oriented con...

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european conference on object-oriented programming, ecoop 2000

作者： Michiels, Isabel Fernández, Alejandro Börstler, Jürgen Prieto, Maximo PROG Vrije Universiteit Brussel Belgium GMD-IPSI Darmstadt Germany Umeå University Sweden Universidad Nacional de La Plata Argentina

ISBN: (纸本)3540415130

The objective of this workshop was to discuss current tools and environments for learning object-oriented concepts and to share ideas and experiences about the usage of computer support to teach the basic concepts of object technology. Workshop participants presented current and ongoing research. During the discussions the participants developed a general "package" of requirements for such tools and environments, which underlying pedagogical approaches could be applied, and how such tools and environments should look like. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Teaching

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Copying and comparing: Problems and solutions 14th

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14th european conference on object oriented programming (ecoop 2000)

作者： Grogono, P Sakkinen, M Concordia Univ Dept Comp Sci Montreal PQ H3G 1M8 Canada Tampere Univ Technol Software Syst Lab FIN-33101 Tampere Finland

ISBN: (纸本)3540676600

In object oriented programming, it is sometimes necessary to copy objects and to compare them for equality or inequality. We discuss some of the issues involved in copying and comparing objects and we address the problem of generating appropriate copying and comparing operations automatically, a service that is not provided by most object oriented languages and environments. Automatic generation appears to be not only desirable, because hand-coding these methods is mechanical and yet error-prone, but also feasible, because the form of the code is simple and largely predictable. Some languages and some object models presented in the literature do support generic copying and comparing, typically defining separate "shallow" and "deep" versions of both operations. A close examination of these definitions reveals inadequacies. Ii the objects involved are simple, copying and comparing them is straightforward. However, there are at least three areas in which insufficient attention has been given to copying and comparing complex objects: (1) values are not distinguished from objects;(2) aggregation is not distinguished from association;and (3) the correct handling of linked structures other than trees is neglected. Solving the third problem requires a mechanism built into the language, such as exists in Eiffel. Building such a mechanism without modifying the language requires a language with sufficient reflexive facilities, such as Smalltalk. Even then, the task is difficult and the result is likely to be insecure. We show that fully automatic generation of copying and comparing operations is not feasible because compilers and other software tools have access only to the structure of the objects and not to their semantics. Nevertheless, it is possible to provide default methods that do most of the work correctly and can be fine-tuned with a small additional amount of hand-coding. We include an example that illustrates the application of our proposals to C++. It is based on

关键词： copying cloning equality complex object structures

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Metadata and adaptive object-models

Metadata and adaptive object-models

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european conference on object-oriented programming, ecoop 2000

作者： Yoder, Joseph W. Razavi, Reza The Refactory Inc 209 W. Iowa UrbanaIL61801 United States University of Paris 6 LIP6-CNRS Case 169 4 Place Jussieu PARIS Cedex 0575252 France

ISBN: (纸本)3540415130

The unrelenting pace of change that confronts contemporary software developers compels them to make their applications more configurable, flexible, and adaptable. A way to meet such requirements is to use an Adaptive object- Model (AOM). This paper describes common architectures for adaptive object-models and summarizes the results from our ecoop 2000 workshop. Participants to this workshop focused on comparisons between the Adaptive object-Model's approach and those of Reflection and Metamodeling. It emerged that there are common themes present in all three approaches and that these approaches can complimen5t one another for assisting developers in designing and building systems that can more quickly adapt to new and changing business requirements. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Application programs

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