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proceedings of the Conference on technology of object-oriented languages and systems, tools 2000年第TOOL 36期 40-47页

作者： Sun, Chang-ai Liu, Chao Jin, Mao-zhong Zhang, Mei Beijing Univ of Aeronautics & Astronautics Beijing China

Software test tool based on source code is an important aided tool of software quality assurance, and under the environments that test technology and test requirement continuously vary, Software test tool itself should be endowed with extensibility, easy reuse and interoperation. In the paper, the necessity of research on integrated framework of component-based software test tool is analyzed, based on the analysis of traditional model of software test tool and characteristic of software test tool, we study architecture design of integrated framework of software test tool, come up with a reference model of integrated framework of software test tool, which is based on component and can be compatible with CORBA. Moreover, the technology of implementing dynamic configuration based on different user's requirements is also introduced.

关键词： object oriented programming

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An agent framework based on distributed object

An agent framework based on distributed object

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technology of object-oriented languages and systems (tools)

作者： Jian Zhou Minghui Zhou Quanyuan Wu National Laboratory for Parallel and Distributed Processing Changsha Hunan China

In the process of developing distributed applications, system reliability, availability, openness, resource sharing and reusability, etc. are very complex and difficult to solve. Recent research into agent theory has demonstrated that agent-oriented technology may be effective in handling these problems. The paper first discusses the relationships of distributed systems from an agent viewpoint, then presents an agent framework based on distributed objects which could be used to construct enterprise distributed applications. To enhance the openness and resource sharing in distributed systems, an agent communication language-KQML is introduced and implemented in the framework.

关键词： Distributed computing Resource management Multiagent systems Reliability Availability Intelligent agent Containers Laboratories Distributed processing Displays

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Revised, inheritance-supporting parallel object model in PDEFA-I

Proceedings of the Conference on Technology of Object-Orient...

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proceedings of the Conference on technology of object-oriented languages and systems, tools 2000年第TOOL 36期 108-113页

作者： Yang, Guang Wen, Dongchan Wang, Dingxing Tsinghua Univ Beijing China

PDEFA is a distributed Ada95 pre-compiler, compiler and run-time system. PDEFA-I is the latest version of PDEFA that supports inheritance between parallel objects. Because of the inheritance anomaly problem with concurrent objects, Ada95 doesn't support this mechanism, so we have to slightly modify the language to make inheritance possible. Code of each interface of a protected object in Ada95 is divided into two parts, synchronization code called condition and implementation code called action. These two parts of code can be changed or replaced independently in subclasses, making great effort for maximum code reuse. Consequently, PDEFA evolves into PDEFA-I with its parallel object model improved in order to solve inheritance anomaly. We demonstrate in this paper mainly the work we have done with service objects.

关键词： object oriented programming

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Tool integration: experiences and issues in using XMI and component technology

Tool integration: experiences and issues in using XMI and co...

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technology of object-oriented languages and systems (tools)

作者： C.H. Damm K.M. Hansen M. Thomsen M. Tyrsted Department of Computer Science University of Aarhus Aarhus Denmark

It is impossible to implement one tool that supports all activities in software development. Thus, it is important to focus on integration of different tools, ideally giving developers the possibility to freely combine individual tools. We discuss how tools can be integrated even in the context of conflicting data models, and provide an architecture for doing so, based on component technology and XML Metadata Interchange. As an example, we discuss the implementation of an electronic whiteboard tool, Knight, which adds support for creative and collaborative object-oriented modelling to existing computer-aided software engineering through integration using our proposed architecture.

关键词： Taxonomy Collaborative work Concrete Computer aided software engineering Application software Software tools Programming XML Software architecture Computer architecture

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Implementation model of IntServ/RSVP based CORBA A/V stream service

Proceedings of the Conference on Technology of Object-Orient...

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proceedings of the Conference on technology of object-oriented languages and systems, tools 2000年第TOOL 36期 94-99页

作者： Cai, Min Xie, Junqing Wang, Yun Gu, Guanqun Southeast Univ Nanjing China

In order to meet the requirements of building CORBA-based distributed multimedia applications, OMG has defined the CORBA A/V Stream Service Specification. However, it is not specified to use what network mechanism to ensure the QoS of multimedia streams. In this paper, an implementation model of IntServ/RSVP based CORBA A/V Stream Service is proposed. It first maps the application-level QoS parameters of multimedia streams specified by application developers into network-level QoS parameters. It then negotiates the QoS requirements with the IntServ/RSVP enabled network and reserves corresponding network resource in the endsystems and intermediate network systems to maintain end-to-end QoS enforcement through the RSVP API. Also, developers can flexibly control and manage the multimedia streams using CORBA IIOP protocol.

关键词： object oriented programming

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Spatiotemporal data modelling and management: a survey

Spatiotemporal data modelling and management: a survey

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technology of object-oriented languages and systems (tools)

作者： Xiaoyu Wang Xiaofang Zhou Sanglu Lu State Key Lab for Novel Software Technology Nanjing University of Posts and Telecommunications Nanjing China Department of Computer Science & Electrical Engineering University of Queensland Brisbane QLD Australia

Many data objects in the real world have attributes concerning location and time. Such spatiotemporal objects can be found in applications such as geographic information systems (GIS), environmental data management and multimedia databases. Traditional relational database technology is not suitable for managing spatiotemporal data, which are multi-dimensional with complex structures and behaviours. Spatiotemporal data can only be managed by the new generation of data management technologies such as object-oriented and object-relational databases. We present a comprehensive survey covering aspects from fundamental user requirements for spatiotemporal applications, spatiotemporal object modelling, object storage structures and techniques for manipulation of spatiotemporal objects such as multidimensional indexing, data structures, query evaluation strategies and architectures for spatiotemporal database management systems.

关键词： Spatiotemporal phenomena technology management object oriented modeling Geographic Information systems Relational databases Environmental management Multimedia databases object oriented databases Multidimensional systems Indexing

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Specification-based testing for real-time reactive systems

Specification-based testing for real-time reactive systems

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technology of object-oriented languages and systems (tools)

作者： V.S. Alagar O. Ormandjieva M. Zheng Department of Computer Science Concordia University Montreal QUE Canada

We describe methods for specification based testing and testing measurement for real time reactive systems. The methods are based on an object oriented formal specification of real time reactive systems. Test cases generated by our method satisfy two test adequacy criteria, and minimally cover the global states and transitions of interest. The testing measurement provides measures of test suite adequacy in terms of coverage. We use a metric based algorithm to select the optimal set of test cases. One of the goals of this work is to automate these methods and integrate them into TROMLAB, a rigorous framework for the development of real time reactive systems.

关键词： System testing Real time systems Automata Automatic testing Mesh generation Formal verification Time factors object oriented modeling Computer science Formal specifications

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A formalized abstract component object model - Z-COM

A formalized abstract component object model - Z-COM

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technology of object-oriented languages and systems (tools)

作者： Miao Huaikou Yu Chuanjiang Li Li The School of Computer Engineering and Science Shanghai University Shanghai China

The importance of having a sound basis for engineers to reason about architectural standards should not be underestimated. A component standard, or integration architecture, is a set of design rules that is meant to ensure that such components can be integrated in defined ways without undue effort. This paper presents a formalized abstract component object model, Z-COM, based on Microsoft's Component object Model (COM), and describes the design and abstract implementation of object-Bus, which is the kernel of Z-COM.

关键词： Costs Acoustical engineering Computer architecture Runtime Kernel Software design Java Software engineering Programming profession Writing

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A strategy for persistent object service under CORBA and Web environment

A strategy for persistent object service under CORBA and Web...

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technology of object-oriented languages and systems (tools)

作者： Dingbang Xu Xin Han Jianmin Wang Yujian Chen Department of Computer Science and Technology Tsinghua University Beijing China

With the rapid development of the Internet, the integrated applications of Web, database, CORBA and Java have offered the three-tiered client/server application models a good computing environment and implementation strategy. This paper briefly introduces this kind of client/server application model based on CORBA and Web, and discusses a persistent object service for it. The paper describes in detail the persistent object service's architecture model, interactive process of components, main interface descriptions and some considerations when implementing this strategy. Finally, a summary is supplied for the persistent object service.

关键词： Web server Application software Service oriented architecture Relational databases Internet Computer architecture Network servers Middleware Independent component analysis Computer science

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proceedings - technology of object-oriented languages and systems, tools 1999

Proceedings - Technology of Object-Oriented Languages and Sy...

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31st International Conference on technology of object-oriented languages and systems, tools 1999

ISBN: (纸本)0769503934

The proceedings contain 62 papers. The topics discussed include: class algebra for ontology reasoning;software evolution: prototypical deltas;modeling and reuse perspectives of inheritance can be reconciled;synchronizing java threads using assertions;the typing of communicating sequential processes;object mapping for layered cooperative systems;reasoning about inheritance and cloning behaviors of software agents;an object oriented data model for web and its algebra;extending formal specification to object-oriented models through level-view structured schemas;an 0bject:oriented net graph model for agent group-based network management;risk analysis and assessment using object-oriented techniques;a multi-layered system of metrics for the measurement of reuse by inheritance;and obtaining generic classes automatically through a parameterization operator. a focus on constrained genericity.

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