A Mashup architecture for web end-user application designs

2008

ABSTRACT The Web 2.0 trend has transformed use of the web as a successful participation platform thanks to a rich user interface developed in different languages and technologies able to hide the complexity of the integrating heterogeneous systems and data. Among the underlying concepts of such an environment, there are a web-oriented architecture as a subsystem of a service-oriented architecture and content composition according to the web services.

2003

There exists a need within many large organizations and their partners to operate cross-organizational Web applications. This paper introduces the WebComposition Service Linking System (WSLS), a component-based and serviceoriented system which makes extensive use of Web Services and other standardized Internet technology in order to support development, maintenance and management of reusable and configurable components for cross-organizational Web applications. A real-world application based around the WSLS support system which provides globally accessible core services, NUKATH --Notebook University Karlsruhe(TH) -is introduced. Our NUKATH project's vision is that business processes of universities shall be established, supported, and provided by aggregations of high-quality, ubiquitously accessible, federated services. T he se federation-aware services could thence be the basis for reusable and standardized business building blocks of a university. Furthermore, these services could transcend the "business" borders of a university -thus allowing for unique meta-structures of distributed universities supporting new collaboration scenarios in education and research. Abstract Domain CF Abstract Service CF Abstract Container CF Abstract Service Element

IEEE Internet Computing, 2000

Mashups are flourishing on the programmable Web. Developers create mashups by combining components of existing Web sites and applications. Although the rapid mashup proliferation offers many opportunities, a lack of standardization and compatibility presents considerable challenges. To address this, the IBM Sharable Code online service platform uses an innovative domainspecific language that provides a common structure and design for mashups as well as facilities to help share and reuse mashup components.

Electronic Markets, 2003

2009

The adoption of REST-an architectural paradigm focusing on resources-by various providers like Google, Facebook and Yahoo strongly influences traditional Business Process design approaches layered atop of Web service description language (WSDL) and SOAP based Web services. Beside the architectural differences manifested in integration challenges for existing business process environments this new paradigm eases service development and enables lightweight integration in Web-oriented architectures. This paper introduces a model-driven approach to integrate different domains into Service Mashups: a) Orchestration information derived from WS-BPEL processes, b) Coequal integration of RESTful Web services and WS-* Web services and c) Role-based collaboration of process participants. The introduced concepts are implemented as a platform to enable collaborative Service Mashup design. The prototype is realized as a Rich Internet Application to maximize design performance and user experience.

The common understanding of learning shifted over the last decades from the traditional behaviorist approach to paradigms like constructivism or discovery learning and, further, started to take into account aspects like heterogeneity of tools and information resources. We assume that prominent Internet phenomena like Google or Wikipedia nowadays influence our learning habits. Against this background, learning platform developers start to consider Web 2.0 features, i.e. by adding tagging functions, collaborative elements, Wiki and Blogging components, etc. [5]. Still, many developments restrict themselves to a style platform and even a simple installation, while learners continue working with the applications and websites they are used to, even if they are encouraged to use a certain eLearning system. Moreover, learning facilitators might also want to recommend certain applications for specific activities, which, in sum, lead to a “heterogeneous space of software, tools and services”. Full-featured heterogeneous eLearning systems are thus, hard to integrate in single solution frameworks. In order to integrate e.g. distinct open source initiatives, Web 2.0 applications as well as personalizable or customizable tools, platform developers try to provide functionalities allowing users to (re)assemble or merge external systemic entities into the own platform, as can be observed in the field of enterprise information systems. In this paper, we present a mashup approach which is based on the XoWiki component [8] and enables a user to add web-based applications to Wiki content and to use and arrange these tools in a comfortable way. In the following, the paper gives a short overview on the topic at hand, describes critical challenges regarding the development of application mashups and – based on that – derives special requirements for eLearning

2003

Service portals are systems which expose a bundle of web services to the user, allowing the specification and subsequent execution of complex tasks defined over these individual services. Examples of situations where service portals would be valuable include making travel plans or purchasing a home. Service portals must be capable of converting an abstract user goal into a correct and optimal concrete execution plan, executing according to the plan, verifying the result against a user's stated satisfaction criteria, and in the case of satisfaction failure, initiating the appropriate recovery procedures. The basic framework needed to support this functionality, from gathering the input to generating an optimal plan and executing that plan, is a prerequisite for all service portals, yet there are currently no such commercial systems in existence, and the research literature has given only cursory treatment to some of these issues. In this paper, we describe FUSION, a comprehensive software system which provides the underlying framework for a service portal. We show how using the elements of this framework, service portal designers and architects can easily create domain-specific service portals, e.g., a travel service portal. We also present the Web Services Execution Specification Language (WSESL), a language that we have developed to describe execution plans in the context of the FUSION services model. Finally, we develop a set of data structures and algorithms for generating correct and optimal execution plans.

2006

2004

Designing web sites is a complex task. Ad-hoc rapid prototyping easily leads to unsatisfactory results, eg poor maintainability and extensibility. However, existing web design frameworks focus exclusively on data presentation: the development of specific functionalities is still achieved through low-level programming. In this paper we address this issue by describing our work on the integration of (semantic) web services into a web design framework, OntoWeaver.

Proceedings of the 1998 ACM symposium on Applied Computing - SAC '98, 1998