Addressing Device-Based Adaptation of Services

2012 ◽  
pp. 278-301
Author(s):  
Achilleas Achilleos ◽  
Kun Yang ◽  
George A. Papadopoulos
Keyword(s):  
Web Services ◽  
Web Service ◽  
Mobile Devices ◽  
Rapid Growth ◽  
Description Language ◽  
Design And Development ◽  
Model Driven ◽  
Service Oriented ◽  
Oriented Approach ◽  
The Web

The rapid growth of the mobile devices market and the increasing requirements of mobile users augment the need to develop Web Service clients that could be deployed and run on both mobile and desktop devices. Different developers attempt to address this heterogeneity requirement and provide solutions that simplify and automate the development of device-aware services. This chapter proposes a Model-Driven Web Service oriented approach, which allows designing and automatically generating mobile and desktop-based clients that are able to invoke ubiquitously Web Services from different devices. This is further enabled via the Web Services Description Language that allows generating the required proxy classes, which support the communication with platform-specific clients. The applicability and efficiency of the approach is demonstrated via the design and development of a device-aware Web Service prototype.

Addressing Device-Based Adaptation of Services

2015 ◽  
pp. 624-647
Author(s):  
Achilleas P. Achilleos ◽  
Kun Yang ◽  
George A. Papadopoulos
Keyword(s):  
Web Services ◽  
Web Service ◽  
Mobile Devices ◽  
Rapid Growth ◽  
Description Language ◽  
Design And Development ◽  
Model Driven ◽  
Service Oriented ◽  
Oriented Approach ◽  
The Web

The rapid growth of the mobile devices market and the increasing requirements of mobile users augment the need to develop Web Service clients that could be deployed and run on both mobile and desktop devices. Different developers attempt to address this heterogeneity requirement and provide solutions that simplify and automate the development of device-aware services. This chapter proposes a Model-Driven Web Service oriented approach, which allows designing and automatically generating mobile and desktop-based clients that are able to invoke ubiquitously Web Services from different devices. This is further enabled via the Web Services Description Language that allows generating the required proxy classes, which support the communication with platform-specific clients. The applicability and efficiency of the approach is demonstrated via the design and development of a device-aware Web Service prototype.

Migrating Web Services in Mobile and Wireless Environments

2011 ◽  
pp. 706-723
Author(s):  
Myung-Woo Park ◽  
Yeon-Seok Kim ◽  
Kyong-Ho Lee
Keyword(s):  
Web Services ◽  
Web Service ◽  
Mobile Devices ◽  
Wireless Network ◽  
Efficient Method ◽  
Source Code ◽  
Context Information ◽  
Wireless Environments ◽  
Migration Method ◽  
The Web

Mobile devices enabled with Web services are being considered as equal participants of the Web services environment. The frequent mobility of devices and the intermittent disconnection of wireless network require migrating or replicating Web services onto adjacent devices appropriately. This article proposes an efficient method for migrating and replicating Web services among mobile devices through code splitting. Specifically, the proposed method splits the source code of a Web service into subcodes based on users’ preferences for its constituent operations. The subcode with a higher preference is migrated earlier than others. The proposed method also replicates a Web service to other devices to enhance its performance by considering context information such as network traffic or the parameter size of its operations. To evaluate the performance of the proposed method, the effect of the code splitting on migration was analyzed. Furthermore, to show the feasibility of the proposed migration method, three application scenarios were devised and implemented.

scholarly journals Intelligent Framework for Web-Service Testing

2015 ◽  
Vol 4 (1) ◽  
pp. 32
Author(s):  
L S RajivKrishna ◽  
Y Prasanth
Keyword(s):  
Web Services ◽  
Web Service ◽  
Multiple Testing ◽  
Service Oriented Architecture ◽  
Automatic Testing ◽  
Enterprise Information ◽  
Service Oriented ◽  
Testing Management ◽  
The Web ◽  
Automation Testing

<p>Web services provides a distributed computing architecture, with an emerging way of service oriented architecture (SQA). Here service oriented architecture is an interface to both computer systems and web services. Which implements an interaction with each other in new and different ways. According to service oriented architecture it virtually provides a platform for web services to communicate with each other. As it was an easy way for communicating with both clients and services. Many organizations and companies are either evaluating themselves into an enterprise information architectures, or they are in the process of getting adopt to the web services technology. As web services are platform independent it is playing a major role in the enterprise environment, and currently web services are widely accepted by many companies and organizations. So commonly web services possess some challenges to the enterprise environment. As a part of it web service must be tested before publish into a service oriented architecture. It involves large number of test cases, test scenarios that takes more time and effort. Testing management is needed so that it should control the time effort and should reduce the complexity of web service in a large software system, also in a real time world. Automation testing faces these challenges and fixes these issues. Automation testing has an ability to handle the complexities which are experiencing by the web services in a current environment. This paper presents the automatic testing strategies of a web service and detect the problems between both manual and automation testing. Finally results shows the proper effective report on improving the visibility of testing process based on the web approach to enhance the critical communication among multiple testing groups.</p>

scholarly journals Efficient Selection of QoS Based Web Services using Modified TOPSIS Method

2019 ◽  
Vol 8 (2) ◽  
pp. 5732-5738
Keyword(s):  
Web Services ◽  
Web Service ◽  
Internet Technology ◽  
Service Oriented ◽  
User Expectations ◽  
Modified Topsis ◽  
Topsis Approach ◽  
The Web ◽  
Selection Of ◽  
Oriented System

Nowadays, due to the ease of availability of internet technology large numbers of people are using the World Wide Web. The companies are changing their way to do business. They are shifting from a data-oriented system to a service-oriented system. Now companies are able to depict their business in the form of web services and make them available on the internet. Due to this number of web services are available for satisfying the user’s need. But to select the best web service that satisfies user specification is a challenging issue. So, it is necessary to consider not only the functional requirement of the web services but also the nonfunctional requirements of the web services. On the other hand, users are not able to specify the exact nonfunctional parameter requirements so, there is a need for QoS processor which can understand the user's need and can extract the parameters for QoS. In this paper, a modified TOPSIS approach based on MCDM is proposed for the selection of efficient web service. The web services that are near to user expectations are selected out using the proposed method. Experimental outcomes show that the proposed approach determines the most promising results.

SC-WS

2014 ◽  
Vol 4 (2) ◽  
pp. 31-44
Author(s):  
Ghita Kouadri Mostefaoui ◽  
Zakaria Maamar ◽  
Nanjangud C. Narendra
Keyword(s):  
Web Services ◽  
Web Service ◽  
Self Healing ◽  
Business Logic ◽  
Aspect Oriented Programming ◽  
Security Concerns ◽  
Oriented Approach ◽  
The Web

This paper discusses Aspect-Oriented Programming (AOP) as an efficient way to handle security concerns in Web services. Without AOP, the necessary security code would be mixed with the business logic that a Web service implements. This renders the maintenance of both code and business logic tedious and prone to errors. AOP allows confining codes of non-functional concerns like security and self-healing into specific modules so that they do not cross-cut with the Web service's business logic. The proposed aspect-oriented approach in this paper is built upon three levels referred to as user, component, and resource, and adopts three types of context, one context per level. The contexts contain various details on the environment of Web services, which permits activating the necessary aspects in response to these details. A set of experiments validating this approach are also reported in this paper.

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.

scholarly journals User-Oriented Web Service Search Technique for Mobile Mashup

2011 ◽  
Vol 2-3 ◽  
pp. 579-582
Author(s):  
Kazuki Hizen ◽  
Takahiro Koita
Keyword(s):  
Web Services ◽  
Web Service ◽  
Mobile Devices ◽  
Mobile Phones ◽  
Basic Design ◽  
Search Technique ◽  
The Web

This paper presents the basic design of a new web service search technique for mobile mashup. Web service search means searching web APIs to build a new mobile mashup service. The technique is based on user-oriented profiling and can be easily used on mobile devices. For web service search, a user must know the details of a web service in advance. However, conventional service search cannot provide such information on whether the web service can be used for the mashup. This study discusses a user-oriented web service search technique for mobile mashup. Its key feature is that users can easily search for web services that use mashup on mobile phones without knowing the details.

scholarly journals Implementing Web Services Using Java Technology

2010 ◽  
Vol 5 (2) ◽  
pp. 251 ◽  
Author(s):  
Mironela Pirnau
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Needs ◽  
Java Technology ◽  
Service Oriented ◽  
The Web

There are several essential activities that need to take place in any service-oriented environment such as: a Web service has to be created, to have its interfaces and invocation methods defined, its service has to be published to one or more intranet or Internet repositories to locate potential users. A Web service needs to be located in order to invoke potential different users. The technologies offered by Web Services enable us to cast older applications, we can use them and the packages already existing in a certain enterprise. The infrastructure associated with older applications can also be wrapped as a serial set of services. In the following pages I tried to present general characteristics of the Web services up to present, as well as the usage of Java technologies for the implementation of web services. The present paper targets a systematisation of the main web services, as well as highlighting and testing the most important technologies used to develop them.

Web Service Specifications Relevant for Service Oriented Infrastructures

2011 ◽  
pp. 174-198 ◽  
Author(s):  
Eduardo Oliveros ◽  
Jesús Movilla ◽  
Andreas Menychtas ◽  
Roland Kuebert ◽  
Michael Braitmaier ◽  
...  
Keyword(s):  
Web Services ◽  
Web Service ◽  
Real Time ◽  
State Of The Art ◽  
The State ◽  
Data Centre ◽  
Development Tools ◽  
Service Oriented ◽  
The Web

Service Oriented Infrastructures (SOIs) have recently seen increased use, mainly thanks to technologies for data centre virtualization and the emergence and increasing commercial offering of Cloud solutions. Web Services have been seen as a tool to implement SOI solutions thanks to their versatility and interoperability, but at the same time, Web Services have been considered not suitable for providing interactive real-time solutions. In this chapter the state of the art of the Web service technology will be analysed, and their different communication mechanisms and the existing implementations will be compared. Firstly, the different standardisation bodies working on Web service specifications relevant to SOI will be introduced. The various approaches to implement Web services will be described followed by the Web service specifications and the middleware that make use of those specifications, including the description of the commercial interfaces and development tools to create services for the cloud. In the last part of the chapter, the interoperability problems present on the different frameworks and the existing solutions to minimize those interoperability problems will be explained.

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