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AN INCREMENTAL CLASS REORGANIZATION APPROACH 6th

6th european CONF ON object-oriented programming ( ecoop 92 )

作者： CASAIS, E Forschungszentrum Informatik Haid-und-Nen-Straße 10-14 Karlsruhe 1 D-7500 Germany

ISBN: (纸本)3540556680

Software components developed with an object-oriented language require frequent reorganizations before they become stable, reusable classes. We propose a new algoritlun that analyses the redefinitions carried out on inherited properties when a class is added to a hierarchy, and restructures the hierarchy to discover missing abstractions and to enforce programming style guidelines. We illustrate our automatic restructuring approach with simple examples, describe formally the algorithm and the object model it is based on, and discuss its suitability for object-oriented software engineering. the results of applying the algorithm to the Eiffel library are examined. © Springer-Verlag Berlin Heidelberg 1992.

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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ecoop 2000 — object-oriented programming 1

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丛书名： Lecture Notes in Computer Science

1000年

作者： Elisa Bertino

ISBN: (数字)9783540451020

ISBN: (纸本)9783540676607

Following a 13-year tradition of excellence, the 14th ecoop conference repeated the success of its predecessors. this excellence is certainly due to the level of maturity that object-oriented technology has reached, which warrants its use as a key paradigm in any computerized system. the principles of the object-oriented paradigm and the features of systems, languages, tools, and methodologies based on it are a source of research ideas and solutions to many in all areas of computer science. ecoop 2000 showed a thriving eld characterized by success on the practical side and at the same time by continuous scienti c growth. Firmly established as a leading forum in the object-oriented arena, ecoop 2000 received 109 high quality submissions. After a thorough review process, the program committee selected 20 papers, which well re?ect relevant trends in object-oriented research: object modeling, type theory, distribution and coo- ration, advanced tools, programming languages. the program committee, c- sisting of 31 distinguished researchers in object-orientation, met in Milan, Italy, to select the papers for inclusion in the technical program of the conference.

关键词： programming Techniques Software Engineering Logics and Meanings of Programs Computer Communication Networks IT in Business

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10th workshop on Mobile object Systems

10th workshop on Mobile Object Systems

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18th european conference on object-oriented programming (ecoop 2004)

作者： Bryce, C Czajkowski, C Univ Geneva Object Syst Grp Geneva Switzerland Sun Microsyst Labs Mountain View CA USA

ISBN: (纸本)354023988X

the 10th ecoop workshop on mobile object systems, which was held on 14 June, 2004 in Oslo University is discussed. the workshop has dealt with the topics related to the movement of code and data between application platforms, security, operating system support, application quality of service, and programming language paradigms. the presentation made at the workshop include portable CPU accounting in Java by Jarle Hualaas and Walter Binder, reducing the overhead of portable CPU accounting in Java by Jarle Hualaas and Walter Binder. the consensus at the end of the workshop was that the workshop was a success, and that the theme of object mobility is present in application.

关键词： object oriented programming

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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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Prototypes with multiple dispatch: An expressive and dynamic object model

Prototypes with multiple dispatch: An expressive and dynamic...

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19th european conference on object-oriented programming

作者： Salzman, L Aldrich, J Carnegie Mellon Univ Pittsburgh PA 15217 USA

ISBN: (纸本)354027992X

Two object-oriented programming language paradigms-dynamic, prototype-based languages and multi-method languages-provide orthogonal benefits to software engineers. these two paradigms appear to be in conflict, however, preventing engineers from realizing the benefits of both technologies in one system. this paper introduces a novel object model, prototypes with multiple dispatch (PMD), which seamlessly unifies these two approaches. We give formal semantics for PMD, and discuss implementation and experience with PMD in the dynamically typed programming language Slate.

关键词： object oriented programming

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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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object orientation and web services

Object orientation and web services

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18th european conference on object-oriented programming (ecoop 2004)

作者： Zirpins, C Piccinelli, G Lamersdorf, W Finkelstein, A Univ Hamburg Dept Comp Sci D-2000 Hamburg Germany UCL Dept Comp Sci London England

ISBN: (纸本)354023988X

the annual european workshop on object Orientation and Web Services focusses challenges and potentials of service-oriented computing in relation to object-oriented technologies and methodologies. In particular it brings together the academic and the industrial perspective on Web Services. this year's issue was characterised by the competency and motivation of the participants, both workshop activists who presented their specific results as well as organisers and invited speaker, who contributed their broad experience. this report outlines the contributions and discussions of the event, as well as the conclusions reached by the participants.

关键词： object oriented programming

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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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Quantitative approaches in object-oriented software engineering

Quantitative approaches in object-oriented software engineer...

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european conference on object-oriented programming, ecoop 2000

作者： e Abreu, Fernando Brito Poels, Geert Sahraoui, Houari A. Zuse, Horst UNL and INESC Portugal Catholic University of Leuven Belgium DIRO Université de Montréal Canada Technische Universität Berlin Germany

ISBN: (纸本)3540415130

this report summarizes the contributions and discussion of the 4th ecoop Workshop on Quantitative Approaches in object-oriented Software Engineering held in Sophia Antipolis on Tuesday, June 13, 2000. this workshop aims to provide a forum to discuss the current state of the art and the practice in the field of quantitative approaches in the OO field. this year, three aspects were particularly discussed: formal approaches, empirical studies and measurement of analysis and design models. Nine position papers were presented and discussed. © Springer-Verlag Berlin Heidelberg 2000.

关键词： object oriented programming

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