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Auflistung nach Autor:in "Wirtz, Guido"

1 - 4 von 4
  • Konferenzbeitrag
    Approaching a Methodology for Designing Composite Applications Integrating Legacy Applications Using an Architectural Framework
    (EMISA 2006 – Methoden, Konzepte und Technologien für die Entwicklung von dienstbasierten Informationssystemen – Beiträge des Workshops der GI-Fachgruppe EMISA (Entwicklungsmethoden für Informationssystemeund deren Anwendung), 2006) Hofmeister, Helge; Wirtz, Guido
    In this paper, an approach toward a problem-oriented design methodology for building composite applications is proposed. This methodology allows for a business process based design that focuses on re-using both existent enterprise services and legacy functionality. The methodology takes a reference architecture into account that describes how composite applications can be structured by means of layers and which analysis and design patterns can be identified and applied on these layers. The presented methodology aligns its phases on the architecture’s single layers and on the dependencies that do exist between the patterns of the single layers. These patterns are described as well.
  • Konferenzbeitrag
    BPMN 2.0 Serialization - Standard Compliance Issues and Evaluation of Modeling Tools
    (Enterprise Modelling and Information Systems Architectures (EMISA 2013), 2013) Geiger, Matthias; Wirtz, Guido
    Business Process Model and Notation (BPMN) 2.0 process models are used more and more, both in practice as in academia. Although academic research mainly focuses on sophisticated semantic checks and extensions there still exist problems in the basic usage of BPMN. This paper investigates issues in BPMN model serializations which arise as a result of the complexity and inconsistency of the standard document. We present a set of serialization constraints as a starting point for sophisticated compliance checks on serialized BPMN models. Furthermore, these constraints are used to perform an evaluation of current modeling tools. This evaluation reveals that the creation of standard compliant models is still a non-trivial endeavor.
  • Konferenzbeitrag
    Intelligente Bildungs- und Hochschulnetze in Deutschland - Wo stehen wir in 2016? Was ist zu tun bis 2020?
    (Informatik 2016, 2016) Igel, Christoph; Baums, Ansgar; Göcks, Marc; Haag, Martin; Krämer, Bernd; Pfisterer, Stephan; Stiehl, Siegfried; Wirtz, Guido; Zimmermann, Volker; Mühlner, Jens
  • Konferenzbeitrag
    Towards uniform BPEL engine management in the cloud
    (Informatik 2014, 2014) Harrer, Simon; Lenhard, Jörg; Wirtz, Guido; Lessen, Tammo Van
    The Web Services Business Process Execution language (BPEL) is a standard for modeling and executing automated processes and is tailor-made for service orchestration. BPEL specifies a serialization format which every BPEL implementation has to understand, thus allowing for the portability of processes among runtime engines. Although the modeling and execution of BPEL processes is portable between engines to a large degree, the lifecycle management of BPEL processes is not standardized and varies a lot for different engines. This paper presents a first approach for a uniform and cloud-based lifecycle management of BPEL processes and engines. We infer a uniform interface for the lifecycle management from the capabilities of current engines and provide a prototypic implementation of a tool that manages processes and engines on a TOSCA-compliant infrastructure.