Service-Oriented Agents and Meta-Model Driven Implementation

2005 ◽  
pp. 270-291 ◽  
Author(s):  
Yinsheng Li ◽  
Hamada Ghenniwa ◽  
Weiming Shen
Keyword(s):  
Web Services ◽  
Software Agents ◽  
Software Modeling ◽  
Semantic Description ◽  
Implementation Framework ◽  
Meta Model ◽  
Model Driven ◽  
Loosely Coupled ◽  
Dynamic Composition ◽  
Service Oriented

Current efforts have not enforced Web services as loosely coupled and autonomous entities. Web services and software agents have gained different focuses and accomplishments due to their development and application backgrounds. This chapter proposes service-oriented agents (SOAs) to unify Web services and software agents. Web services features can be well realized through introducing software agents’ sophisticated software modeling and interaction behaviors. We present a natural framework to integrate their related technologies into a cohesive body. Several critical challenges with SOAs have been addressed. The concepts, system and component structures, a meta-model driven semantic description, agent-oriented knowledge representation, and an implementation framework are proposed and investigated. They contribute to the identified setbacks with Web services technologies, such as dynamic composition, semantic description, and implementation framework. A prototype of the proposed SOAs implementation framework has been implemented. Several economic services are working on it.

scholarly journals Diseño de Servicios Web Semánticos utilizando el desarrollo de software dirigido por modelos [Semantic Web Services design using model-driven software development]

2014 ◽  
Author(s):  
Wilman Vega ◽  
Henry Umaña
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Software Development ◽  
Semantic Web Services ◽  
Model Driven Development ◽  
Model Driven ◽  
Dynamic Composition ◽  
Palabras Clave ◽  
Wide Range ◽  
Model Driven Software Development

Resumen Los Servicios Web Semánticos ofrecen beneficios, que coadyuvan a la evolución de la Web, como el descubrimiento, invocación y composición dinámica y automática de recursos, habilitan efectivamente la interoperabilidad entre sistemas, permitiendo una amplia gama de nuevos servicios y oportunidades de negocios en la Internet. La estructura necesaria para proveer estos beneficios, hace que su desarrollo sea un proceso complejo, requiriendo establecer formas más fáciles y dinámicas que garanticen reutilización, calidad y rapidez. El desarrollo dirigido por modelos realiza una contribución eficiente en estos aspectos, dado que trabaja de manera intrínseca conceptos como separación de conceptos, reusabilidad e interoperabilidad entre componentes. En este artículo se presenta un enfoque para desarrollo de software dirigido por modelos, orientado al desarrollo de los servicios web semánticos, donde inicialmente se plantean las fases correspondientes al análisis, diseño y desarrollo dentro de la metodología propuesta, aplicando la metodología sobre un pequeño caso de estudio y obtener como resultado la estructura de un Servicio web semántico. Palabras Clave: Servicios web semánticos, Desarrollo dirigido por modelos, ontologías web.   Abstract Semantic Web Services offers benefits that contribute to Web evolution. Benefits such as automatic discovery and invocation, and dynamic composition, effectively enables systems interoperability, allowing a wide range of services and Internet businesses. The necessary structure to provide those benefits by Semantic Web Services makes its development a complex process. It necessary to establish more easy and dynamic ways to develop this kind of software, in order to assure reuse, quality and speediness in the development process. The model-driven software development makes an efficient contribution in those aspect, because it works intrinsically concepts related such separation of concerns, reusability and components interoperability. In this paper we present an approach to model-driven development software applied to Semantic Web Services. First, we establish the phases corresponding to the analysis, design and development in the proposal methodology, by applying it to a case of study we obtain the structure of a Semantic Web Services. Keywords: Semantic Web Services, Model-Driven Development, Web Ontologies.

Design and Implementation of Network Management Architecture for Wireless Sensor Networks

2012 ◽  
Vol 433-440 ◽  
pp. 3895-3899 ◽  
Author(s):  
Ray I Chang ◽  
Chi Cheng Chuang
Keyword(s):  
Web Services ◽  
Network Management ◽  
Service Oriented Architecture ◽  
Wireless Sensor ◽  
Memory Space ◽  
Loosely Coupled ◽  
Sensor Platforms ◽  
Management Architecture ◽  
Service Oriented ◽  
Network Management Architecture

Traditional NM (Network Management) techniques can not be applied on WSN (Wireless Sensor Network) due to its features of low computing ability, tiny memory space, and limited energy. A new NMA (Network Management Architecture) for WSN is needed. In this paper, we design a loosely coupled NMA of WSN based on SOA (Service-Oriented Architecture), and have well defined NM interfaces. Finally, we develop a SOA platform for WSN operations according to the NMA. Based on SOA platform, users can compose and use various NM Web Services by internet depending on their requirements. Heavy tasks which need a great deal of computing resources and storage are executed on the SOA platform. Thus, energy consumption and node computation can be decreased. Moreover, external applications use Web Services to integrate SOA platform for WSN. It lowers the difficulty in integrating different sensor platforms and heterogeneous devices.

Service-Oriented Computing

2013 ◽  
pp. 1-20 ◽  
Author(s):  
Stéphanie Chollet ◽  
Philippe Lalanda ◽  
Jonathan Bardin
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Application Integration ◽  
New Paradigm ◽  
Loosely Coupled ◽  
Service Oriented Computing ◽  
Service Oriented ◽  
Scale Network ◽  
Computing Platforms ◽  
Multiple Domains

The visionary promise of Service-Oriented Computing (SOC) is a world-scale network of loosely coupled services that can be assembled with little effort in agile applications that may span organizations and computing platforms. In practice, services are assembled in a Service-Oriented Architecture (SOA) that provides mechanisms and rules to specify, publish, discover and compose available services. The aim of this chapter is to present the different technologies implementing the new paradigm of SOA: Web Services, UPnP, DPWS, and service-oriented component OSGi and iPOJO. These technologies have been developed and adapted to multiple domains: application integration, pervasive computing and dynamic application integration.

Service-Oriented Architecture

2011 ◽  
pp. 998-1002
Author(s):  
Kwan-Ming Wan ◽  
Pouwan Lei ◽  
Chris Chatwin ◽  
Rupert Young
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Core Competencies ◽  
Enterprise Application Integration ◽  
The Internet ◽  
Business Systems ◽  
Loosely Coupled ◽  
Enterprise Application ◽  
Tightly Coupled ◽  
Service Oriented

The established global business environment is under intense pressure from Asian countries such as Korea, China, and India. This forces businesses to concentrate on their core competencies and adopt leaner management structures. The coordination of activities both within companies and with suppliers and customers has become a crucial competitive advantage. At the same time, the Internet has transformed the way in which businesses run. As the Internet becomes a cheap and effective communication channel, businesses are quick to adopt the Web for integrating their systems together and linking them with their suppliers and customers. Current enterprise computing using J2EE (Java 2 Platform, Enterprise Edition) has yielded systems in which the coupling between various components in them are too tight to be effective for ubiquitous B2B (business-to-business) and B2C (business-to-consumer) e-business over the Internet. This approach requires too much agreement and shared context between business systems from different organizations. There is a need to move away from tightly coupled, monolithic systems and toward systems of loosely coupled, dynamically bound components. The emerging technology, Web services, provides the tools to accomplish this integration, but this approach presents many new challenges and problems that must be overcome. In this article, we will discuss the current approaches in enterprise application integration (EAI) and the limitations. There is also a need for service-oriented applications, that is, Web services. Finally, the challenges in implementing Web services are outlined.

THE MODEL-DRIVEN DEVELOPMENT METHOD BASED ON THE IMPROVED FEATURE ANALYSIS

2011 ◽  
Vol 10 (01) ◽  
pp. 151-158
Author(s):  
LEI WU ◽  
ZHEN WEI
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Feature Model ◽  
Analysis Approach ◽  
Feature Models ◽  
Erp System ◽  
Model Driven ◽  
Modeling Analysis ◽  
Service Oriented ◽  
System Project

Aiming at the shortcomings of the modeling analysis of traditional Feature-Oriented Analysis Approach under service oriented architecture SOA, and providing more reusability and flexibility to the development of SOA system, this paper makes an improvement on Feature-Oriented Analysis Approach. It introduces the concept of service feature and improves the refinement and interaction description of feature models. On the basis of this, it proposes a method of domain analysis in SOA. In addition, in view of the fact that web services act as a technology available to implement SOA, it presents a method to transform feature model into interface model and composite model of web services. Finally, this method's application in ERP system project in publishing is verified as an example to show that it is feasible to improve software development efficiency.

scholarly journals Event Based Approach for Web Services Composition

2014 ◽  
pp. 52-58
Author(s):  
A. Vani Vathsala ◽  
Hrushikesha Mohanty
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Research Work ◽  
Ongoing Research ◽  
Loosely Coupled ◽  
Fine Grained ◽  
Business Applications ◽  
Event Driven ◽  
Service Oriented ◽  
Event Based

The success of the Internet and the ongoing globalization led to a demand for new solutions to meet the requirements for ITsystems. The paradigm of service-oriented and event-driven architecture with fine grained and loosely coupled services tries to cope with those needs. Service Oriented Architecture (SOA) and Event Driven Architecture (EDA) are two acknowledged architectures for the development of business applications and information systems, which have evolved separately over the years. Today both architectures are acknowledged, but their synergy is not. There are numerous benefits of having an architecture that supports coexistence between operations and events, and composition of services based on operation invocation and event triggering. As part of our ongoing research work, we have tried to analyze in this paper, the basic design of Event based systems, issues that have to be addressed when event based approach is used for composing and coordinating web services. Then we have specified the techniques available that handle these issues, and gave a comparative study on these techniques. Finally we have attempted to sort out the unhandled/ partially handled issues that could be addressed as part of our research.

When Parameterized Model Driven Development Supports Aspect Based SOA

2011 ◽  
Vol 7 (3) ◽  
pp. 44-62 ◽  
Author(s):  
Valérie Monfort ◽  
Slimane Hammoudi
Keyword(s):  
Web Services ◽  
Web Service ◽  
Business Processes ◽  
Design Solution ◽  
Technical Solution ◽  
Service Oriented Architectures ◽  
Model Driven Development ◽  
Model Driven ◽  
Service Oriented ◽  
Parameterized Model

Service-Oriented Architectures (SOA) are widely used by companies to gain flexibility. Web services are the fitted technical solution used to support SOA by providing interoperability and loose coupling. Basic Web services are being assembled to composite Web services in order to directly support business processes. However, there is much to be done to obtain a genuine flawless Web service, and current market implementations do not provide adaptable Web service behavior depending on the service contract. This paper proposes two different approaches to increase adaptability of Web services and SOA. The first approach is based on Aspect Oriented Programming (AOP) as a new design solution for Web services. The authors have implemented an infrastructure to enrich services with aspects and to dynamically reroute messages according to changes, without redeployment. The second approach combines Model Driven Development (MDD) and Context-Awareness to promote reuse and adaptability of Web services behavior depending on the service context. Parameterized transformation techniques are proposed to bind context with business logic implemented by a service. The aim is to merge the two approaches to abstract and reduce the technical complexity of aspect based service solution.

Web Services

2007 ◽  
pp. 244-267
Author(s):  
Bernd Aman ◽  
Salima Benbernou ◽  
Benjamin Nguyen
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Web Applications ◽  
Loosely Coupled ◽  
Composition Problem ◽  
Service Oriented ◽  
Service Paradigm ◽  
Current Standards ◽  
The Web

Unlike traditional applications, which depend upon a tight interconnection of all program elements, Web service applications are composed of loosely coupled, autonomous and independent services published on the Web. In this chapter, we first introduces the concept of service oriented computing (SOC) on the Web and the current standards enabling the definition and publication of Web services. This technology’s next evolution is to facilitate the creation and maintenance of Web applications. This can be achieved by exploiting the self-descriptive nature of Web services combined with more powerful models and languages for composing Web services. A second objective of this chapter is to illustrate the complexity of the Web service composition problem and to provide a representative overview of the existing approaches. The chapter concludes with a short presentation of two research projects exploiting and extending the Web service paradigm.

Flow-based Adaptive Information Integration

2011 ◽  
pp. 1902-1923
Author(s):  
Dickson K.W. Chiu ◽  
Thomas Trojer ◽  
Hua Hu ◽  
Haiyang Hu ◽  
Yi Zhuang ◽  
...  
Keyword(s):  
Web Services ◽  
Information Integration ◽  
Exception Handling ◽  
Implementation Framework ◽  
Heterogeneous Information ◽  
Loosely Coupled ◽  
Adaptive Workflow ◽  
Ontology Language ◽  
Business Process Execution

Assembling a coherent view of distributed heterogeneous information and their processing is challenging but important for inter-organizational business collaboration and service provision. However, traditional integration approaches do not consider dynamic and adaptive issues such as human intervention and exception handling. Therefore, we propose a Workflow-based Information Integration (WII) approach, which is particularly suitable in a loosely coupled Web services environment. Our implementation framework comprises five layers: semantic, application, workflow, service, and message. We focus on the workflow layer for providing adaptiveness from the aspects of various types of flows such as controlflows, data-flows, security-flows, exception-flows and semantic-flows by using the Business Process Execution Language for Web Services (BPEL). We further extend this with our proposed data-integration, semantic-referencing, and exception-handling assertions in order to achieve dynamic and adaptive workflow-based information integration plans. We map information into SOAP messages and link the proposed exception-handling assertions in BPEL to SOAP-fault implementations. We also define semantic referencing in BPEL by using OWL Web Ontology Language. Lastly, we demonstrate the feasibility of our adaptive approach with an intelligence information integration case study at the application layer and examine some typical use cases of exception-handling with semantic support.

Analyses of Evolving Legacy Software into Secure Service-Oriented Software using Scrum and a Visual Model

2013 ◽  
pp. 196-217
Author(s):  
Sam Chung ◽  
Conrado Crompton ◽  
Yan Bai ◽  
Barbara Endicott-Popovsky ◽  
Seung-Ho Baeg ◽  
...  
Keyword(s):  
Web Services ◽  
Web Application ◽  
Software Reengineering ◽  
Software Application ◽  
Legacy Software ◽  
Web Technologies ◽  
Model Driven ◽  
Service Oriented ◽  
Modernization Process ◽  
Restful Web Services

This chapter explores using service-oriented computing to reengineer non-secure legacy software applications to create new secure target applications. Two objectives of this chapter are: (1) to analyze the architectural changes required in order to adopt new web technologies and cope with resultant vulnerabilities in source code; and (2) to measure the level of effort required to modernize software by adopting new web technologies and adding security countermeasures. To meet these objectives, a model-driven Scrum for Service-Oriented Software Reengineering (mScrum4SOSR) methodology was chosen and applied to a reengineering project. Scrum is employed to manage the reengineering project, as well as to measure implementation effort related to the modernization process. Further, a re-documentation technique called 5W1H Re-Doc is used to re-document the non-secure software application at a high level of abstraction in order to help project participants comprehend what is needed to identify candidate services for service-oriented reengineering. Case studies with and without security features are created for different types of applications - a desktop graphical user interface, a web application, a web services application, a restful web services application, and an enterprise service bus application.

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