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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

An Xml-based Feature Modeling Language

Nabdel, Leili 01 October 2011 (has links) (PDF)
Feature modeling is a common way of representing commonality and variability in Software Product Lines. There are alternative notations reported in the literature to represent feature models. Compared to the graphical notations, the text-based notations are more amenable to automated processing and tool interoperability. This study presents an XML-based feature modeling language to represent extended feature models that can include complex relationships involving attributes. We first provide a Context Free Grammar for the extended feature model definitions including such complex relationships. Then we build the XML Schema Definitions and present a number of XML instances in accordance with the defined schema. In addition, we discuss a validation process for the validation of the XML instances against the defined schema, which also includes additional tasks such as well-formedness checking for the XML instances.
2

Feature-based Configuration Management of Applications in the Cloud / Feature-basierte Konfigurationsverwaltung von Cloud-Anwendungen

Luo, Xi 27 June 2013 (has links) (PDF)
The complex business applications are increasingly offered as services over the Internet, so-called software-as-a-Service (SaaS) applications. The SAP Netweaver Cloud offers an OSGI-based open platform, which enables multi-tenant SaaS applications to run in the cloud. A multi-tenant SaaS application is designed so that an application instance is used by several customers and their users. As different customers have different requirements for functionality and quality of the application, the application instance must be configurable. Therefore, it must be able to add new configurations into a multi-tenant SaaS application at run-time. In this thesis, we proposed concepts of a configuration management, which are used for managing and creating client configurations of cloud applications. The concepts are implemented in a tool that is based on Eclipse and extended feature models. In addition, we evaluate our concepts and the applicability of the developed solution in the SAP Netwaver Cloud by using a cloud application as a concrete case example.
3

Feature-based Configuration Management of Applications in the Cloud

Luo, Xi 30 April 2013 (has links)
The complex business applications are increasingly offered as services over the Internet, so-called software-as-a-Service (SaaS) applications. The SAP Netweaver Cloud offers an OSGI-based open platform, which enables multi-tenant SaaS applications to run in the cloud. A multi-tenant SaaS application is designed so that an application instance is used by several customers and their users. As different customers have different requirements for functionality and quality of the application, the application instance must be configurable. Therefore, it must be able to add new configurations into a multi-tenant SaaS application at run-time. In this thesis, we proposed concepts of a configuration management, which are used for managing and creating client configurations of cloud applications. The concepts are implemented in a tool that is based on Eclipse and extended feature models. In addition, we evaluate our concepts and the applicability of the developed solution in the SAP Netwaver Cloud by using a cloud application as a concrete case example.:List of Figures i List of Tables iii 1 Introduction 1 1.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 The Structure of This Document . . . . . . . . . . . . . . . . . 2 2 Background 5 2.1 Cloud Computing . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Software Product Line Engineering . . . . . . . . . . . . . . . . 7 2.3 Role Based Access Control . . . . . . . . . . . . . . . . . . . . . 10 2.4 Staged Con guration . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5 Work ow Modeling . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.5.1 Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.5.2 Work ow Modeling Languages . . . . . . . . . . . . . . . 16 2.5.3 Adaptive Work ow . . . . . . . . . . . . . . . . . . . . . 17 2.5.4 Adaptation Patterns . . . . . . . . . . . . . . . . . . . . 17 2.6 Graph Transformation . . . . . . . . . . . . . . . . . . . . . . . 18 2.7 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3 Analysis 23 3.1 Illustrative Example . . . . . . . . . . . . . . . . . . . . . . . . 23 3.1.1 Domain and Exiting Platform . . . . . . . . . . . . . . . 24 3.1.2 Yard Management System as a SaaS Application . . . . 28 3.2 Requirements Identi cation . . . . . . . . . . . . . . . . . . . . 28 4 Concept 31 4.1 Con guration Management Speci cation . . . . . . . . . . . . . 31 4.1.1 Variability Modeling . . . . . . . . . . . . . . . . . . . . 32 4.1.2 Stakeholder Views Modeling . . . . . . . . . . . . . . . . 34 4.1.3 Con guration Work ow Modeling . . . . . . . . . . . . . 36 4.2 Con guration Work ow Adaptations . . . . . . . . . . . . . . . 41 4.3 Mapping between Problem Space and Solution Space . . . . . . 47 4.4 Con guration Process Simulation . . . . . . . . . . . . . . . . . 50 5 Implementation 53 5.1 Con guration Speci cation . . . . . . . . . . . . . . . . . . . . . 54 5.1.1 Extended Feature Model Speci cation . . . . . . . . . . 55 5.1.2 View Model Speci cation . . . . . . . . . . . . . . . . . . 56 5.1.3 Con guration Work ow Model Speci cation . . . . . . . 57 5.2 Graph Transformation Rules . . . . . . . . . . . . . . . . . . . . 62 5.3 Mapping Realization . . . . . . . . . . . . . . . . . . . . . . . . 65 5.4 Con guration Management Tooling . . . . . . . . . . . . . . . . 67 5.5 Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 6 Conclusions and Future Work 77 6.1 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 6.2 Future Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Bibliography i

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