scholarly journals SERVICE-ORIENTED DESIGN: A MULTI-VIEWPOINT APPROACH

2004 ◽  
Vol 13 (04) ◽  
pp. 337-368 ◽  
Author(s):  
REMCO DIJKMAN ◽  
MARLON DUMAS
Keyword(s):  
Web Services ◽  
Control Flow ◽  
Proof Of Concept ◽  
Static Verification ◽  
Verification Tool ◽  
Proposed Model ◽  
Service Oriented ◽  
Composite Services ◽  
Interface Behaviour ◽  
The Web

As the technology associated with the "Web Services" trend gains significant adoption, the need for a corresponding design approach becomes increasingly important. This paper introduces a foundational model for designing (composite) services. The innovation of this model lies in the identification of four interrelated viewpoints (interface behaviour, provider behaviour, choreography, and orchestration) and their formalization from a control-flow perspective in terms of Petri nets. By formally capturing the interrelationships between these viewpoints, the proposal enables the static verification of the consistency of composite services designed in a cooperative and incremental manner. A proof-of-concept simulation and verification tool has been developed to test the possibilities of the proposed model.

A Proposed SOAP Model in WS-Security to Avoid Rewriting Attacks and Ensuring Secure Conversation

2018 ◽  
Vol 12 (1) ◽  
pp. 74-88 ◽  
Author(s):  
Rajni Mohana
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Message Processing ◽  
Proposed Model ◽  
Xml Signature ◽  
Service Oriented ◽  
Soap Message ◽  
Shared Key ◽  
A Current ◽  
The Web

Service oriented architecture is a current and popular software engineering paradigm providing agile web services to consumers in a dynamically changing enterprise environment. The SOAP messages are used to establish communication between the web services which are vulnerable to rewriting attacks and insecure conversation. XML Signature as specified in WS-Security provides security to the contents of the SOAP messages but is insufficient. This paper proposes a SOAP model where rewriting attacks can be avoided and a secure conversation can be established as well. This paper recommends three steps, firstly using shared key for encrypting timestamp in the message body for generating corresponding signature; Secondly, using value referencing both for signature validation and message processing; and finally encrypting the whole SOAP body instead of sending an open SOAP Message in the network to prevent unauthorized access. The paper concludes that the proposed model successfully detects rewriting attacks and establishes secure conversation in the to-and-fro message transmission.

A Theoretical Foundation of Demand Driven Web Services

2015 ◽  
pp. 392-422
Author(s):  
Zhaohao Sun ◽  
John Yearwood
Keyword(s):  
Web Services ◽  
Social Services ◽  
Service Oriented Architecture ◽  
State Of The Art ◽  
The State ◽  
Cloud Services ◽  
Pivotal Role ◽  
The Internet ◽  
Service Oriented ◽  
The Web

Web services are playing a pivotal role in business, management, governance, and society with the dramatic development of the Internet and the Web. However, many fundamental issues are still ignored to some extent. For example, what is the unified perspective to the state-of-the-art of Web services? What is the foundation of Demand-Driven Web Services (DDWS)? This chapter addresses these fundamental issues by examining the state-of-the-art of Web services and proposing a theoretical and technological foundation for demand-driven Web services with applications. This chapter also presents an extended Service-Oriented Architecture (SOA), eSMACS SOA, and examines main players in this architecture. This chapter then classifies DDWS as government DDWS, organizational DDWS, enterprise DDWS, customer DDWS, and citizen DDWS, and looks at the corresponding Web services. Finally, this chapter examines the theoretical, technical foundations for DDWS with applications. The proposed approaches will facilitate research and development of Web services, mobile services, cloud services, and social services.

Structural Interoperability as a Basis for Service Adaptability

2012 ◽  
pp. 33-59 ◽  
Author(s):  
José C. Delgado
Keyword(s):  
Web Services ◽  
Data Use ◽  
Complex Data ◽  
Distributed Resources ◽  
Service Oriented ◽  
And Behavior ◽  
The Web

Web Services appeared essentially as an interoperability solution and REST as a closer match to the semantics of protocols such as HTTP. Clearly influenced by the original browsing goals of the Web, these technologies are not native solutions to the service-oriented paradigm, exhibit limitations to interoperability, and behavior has to be implemented in a separate language. Web Services offer a WSDL document to describe them, but assume that complex data use the same schema in both interacting services, which increases their coupling. This chapter discusses interoperability, from the perspective of both the consumer (compliance) and provider (conformance) services, and it argues that compliance is a weaker requirement for service interoperability than conformance and should be the cornerstone to decrease coupling and to favor adaptability. Structural interoperability is used, given that the lifecycles of distributed resources are decoupled. Metrics to quantify adaptability, based on similarity and decoupling, are proposed.

Towards Process Mediation in Semantic Service Oriented Architecture (SSOA)

2011 ◽  
pp. 780-801 ◽  
Author(s):  
Tariq Mahmoud ◽  
Jorge Marx Gómez
Keyword(s):  
Web Services ◽  
Enterprise Resource Planning ◽  
Service Oriented Architecture ◽  
Resource Planning ◽  
The Public ◽  
Digital World ◽  
Digital Community ◽  
Service Oriented ◽  
Semantic Service ◽  
The Web

Nowadays, it becomes very hard for anybody in the digital world to search and find suitable Web Services fit into his/her needs, since there is a huge amount of data on the Web caused by the enormous increasing of the Web providers and Web Services widespread in this digital community, and one of the most difficulties Web Services have to overcome, in the attempt to use the contents of the World Wide Web, is heterogeneity which is caused by the nature of the Web itself, and has two origins: data or public process heterogeneity. So it is highly required in such environment to have an intelligent mechanism in which every user can search according to his/her needs and later on can fulfill it in a semantic way. The authors will focus in this chapter on the public process heterogeneity which describes the behavior of the participants during a conversation, and propose a solution for dealing with it, explaining the functionality of the process mediator developed as a part of the Web Service Execution Environment (WSMX) and its mediation scenario, and will also apply this proposed solution on Federated Enterprise Resource Planning (FERP) system to get the semantic extension from it.

Building Highly Dependable Wireless Web Services

2010 ◽  
Vol 8 (4) ◽  
pp. 1-16 ◽  
Author(s):  
Wenbing Zhao
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
State Of The Art ◽  
Mobile Business ◽  
Business Transactions ◽  
High Dependability ◽  
Service Oriented ◽  
And Performance ◽  
Wireless Mobile ◽  
The Web

In this paper, the authors introduce Web services technology and its applications to mobile business transactions. This paper shows that the Web services technology is a powerful tool to build next-generation e-Commerce applications for wireless mobile devices following the service-oriented architecture. Such an approach would bring significant benefits to organizations involved with e-Commerce. The authors further discuss the importance of ensuring high dependability of Web services and provide a literature review of state-of-the-art techniques that are critical to the implementation of practical and dependable wireless Web services. Finally, research on the design, implementation, and performance evaluation of a fault tolerance framework for wireless Web services are described.

Adaptive Service Choreography Support in Virtual Enterprises

2008 ◽  
pp. 66-75 ◽  
Author(s):  
Adomas Svirskas ◽  
Bob Roberts ◽  
Ioannis Ignatiadis
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Virtual Enterprises ◽  
Business Applications ◽  
Service Oriented ◽  
Service Choreography ◽  
Business Function ◽  
Business Protocols ◽  
Usage Context ◽  
The Web

Service Oriented Architecture (SOA) approach in general and the Web services technology in particular enable creation of business applications from independently developed, deployed and owned components called services. A service captures a distinct business function offering some value independently of its usage context. However, it is not enough to have the business functionality of the partners packaged as (Web) services; there is also a need for business-aligned order of interaction between these services a.k.a. business protocols, which can also be reused. The contribution of the chapter is two-fold: it explores reusability of the applicable business protocols in different business scenarios and also suggests possible ways to adapt the implementations of the partners’ services (end-points) to the changes in the business protocols.

Trapping Runtime Faults from Web Service Fault Ontology

2020 ◽  
Vol 17 (8) ◽  
pp. 3759-3764
Author(s):  
K. Jayashree
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Users ◽  
Intended Behavior ◽  
Proposed Model ◽  
Different Types ◽  
Service Application ◽  
Common Understanding ◽  
Types Of Faults ◽  
The Web

The ontology offers a clear considerate of the runtime faults in web services and helps to share this common understanding with users and applications. This paper presents Web Service Fault Ontology and to trap the runtime faults from the Web Services Fault Ontology. Web Service Fault Ontology has been developed to represent the different types of faults that can occur during the interactions between service users, service publishers and service registries: publishing, discovery, binding and execution of web services. Ontology has been proposed to define the intended behavior of web services from the service provider. A sample web service application was developed for testing the proposed model.

GENERATING TEST CASES OF COMPOSITE SERVICES BASED ON OWL-S AND EH-CPN

2010 ◽  
Vol 20 (07) ◽  
pp. 921-941 ◽  
Author(s):  
BIXIN LI ◽  
SHUNHUI JI ◽  
DONG QIU ◽  
JU CAI
Keyword(s):  
Web Services ◽  
Web Service ◽  
Complex Function ◽  
Control Flow ◽  
Test Sequence ◽  
Test Cases ◽  
Automatic Integration ◽  
Flow Information ◽  
Composite Services ◽  
Service Reuse

In web service times, the techniques for composing services are based on service reuse and automatic integration. A new web service will be generated by composing some existing web services. These web services cooperate with each other to provide a new more complex function. It is necessary and very important to test the interaction behavior between any two web services during composition. In this paper, a kind of enhanced hierarchical color petri-net (or EH-CPN) is introduced to generate test cases for testing the interaction, where EH-CPN is transformed from OWL-S document, and both control flow and data flow information in EH-CPN are analyzed and used to generate an executable test sequence, and further test cases are created by combining the test sequence and test data in an XML file.

scholarly journals Web Services Composition Using Dynamic Classification and Simulated Annealing

2018 ◽  
Vol 12 (11) ◽  
pp. 395
Author(s):  
Issam AlHadid ◽  
Evon Abu-Taieh
Keyword(s):  
Simulated Annealing ◽  
Web Services ◽  
Service Composition ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Service Level Agreement ◽  
Synchronous Mode ◽  
Services Composition ◽  
Service Oriented ◽  
The Web

Service Oriented Architecture (SOA) introduced the web services as distributed computing components that can be independently deployed and invoked by other services or software to provide simple or complex tasks. In this paper we propose a novel approach to solve the problem of the business processes execution engine web service selection and services composition in the Service Oriented Architecture (SOA) related to the Synchronous mode.  The paper provides a mechanism to improve the web services selection and service composition, using dynamic web services and service composition classification and Simulated Annealing (SA) to satisfy services' requirements expressed as the Service Level Agreement (SLA). The results show that the proposed approach enhanced the services composition by increasing the availability and decreasing the response time to the service composite.

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>

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