TY - JOUR A1 - Mathes, Markus A1 - Stoidner, Christoph A1 - Schwarzkopf, Roland A1 - Heinzl, Steffen A1 - Dörnemann, Tim A1 - Dohmann, Helmut A1 - Freisleben, Bernd T1 - Time-constrained services: a framework for using real-time web services in industrial automation JF - Service Oriented Computing and Applications N2 - The use of web services in industrial automation, e.g. in fully automated production processes like car manufacturing, promises simplified interaction among the manufacturing devices due to standardized protocols and increased flexibility with respect to process implementation and reengineering. Moreover, the adoption of web services as a seamless communication backbone within the overall industrial enterprise has additional benefits, such as simplified interaction with suppliers and customers (i.e. horizontal integration) and avoidance of a break in the communication paradigm within the enterprise (i.e. vertical integration). The Time-Constrained Services (TiCS) framework is a development and execution environment that empowers automation engineers to develop, deploy, publish, compose, and invoke time-constrained web services. TiCS consists of four functional layers—tool support layer, real-time infrastructural layer, real-time service layer, and hardware layer—which contain several components to meet the demands of a web service based automation infrastructure. This article gives an overview of the TiCS framework. More precisely, the general design considerations and an architectural blueprint of the TiCS framework are presented. Subsequently, selected key components of the TiCS framework are discussed in detail: the SOAP4PLC engine for equipping programmable logic controllers with a web service interface, the SOAP4IPC engine for processing web services in real-time on industrial PCs, the WS-TemporalPolicy language for describing time constraints, and the TiCS Modeler for composing time-constrained web services into a time-constrained BPEL4WS workflow. Y1 - 2009 UR - https://link.springer.com/article/10.1007/s11761-009-0050-y VL - 3 SP - 239 EP - 262 PB - Springer London ER - TY - CHAP A1 - Heinzl, Steffen A1 - Mathes, Markus A1 - Stadelmann, Thilo A1 - Seiler, Dominik A1 - Diegelmann, Marcel A1 - Dohmann, Helmut A1 - Freisleben, Bernd T1 - The Web Service Browser: Automatic Client Generation and Efficient Data Transfer for Web Services T2 - Proceedings of the 7th IEEE International Conference on Web Services N2 - Web services are supported by almost all major software vendors, but nevertheless there is still a certain barrier that prevents a broader user community to actually use them. The barrier is the lack of appropriate clients offered in conjunction with the services. This paper presents a Web Service Browser that automatically generates a dynamic user interface when the user browses to the location of the service description and additionally handles the invocation of the service. To ease the use of the service, the browser takes care of data management by using an implementation of the Flex-SwA architecture. Results are presented to the user in a human-readable manner. When the result contains multimedia data, an audio or video player is used to present the result. Use cases demonstrate the benefits of the browser. With the Web Service Browser, web services simply become a usable component offered in the WWW. Y1 - 2009 U6 - https://doi.org/10.1109/ICWS.2009.22 SP - 743 EP - 750 PB - IEEE Computer Society Press ER - TY - CHAP A1 - Mathes, Markus A1 - Gärtner, Jochen A1 - Dohmann, Helmut A1 - Freisleben, Bernd T1 - SOAP4IPC: A Real-Time SOAP Engine for Industrial Automation T2 - 17th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing N2 - The adoption of service-oriented architectures based on web services in industrial automation promises increased interoperability and flexibility. However, industrial automation requires real-time processing, i.e. a task has to be processed within a specific deadline, which is a large obstacle for utilizing web services in this domain.The Time-Constrained Services (TiCS) framework meets the demands of industrial automation and empowers automation engineers to develop, deploy, publish, compose, and invoke time-constrained web services. This paper presents the TiCS real-time SOAP engine for industrial PCs called SOAP4IPC. It permits the execution of web services in real-time. The architecture of the SOAP4IPC engine, implementation details, and experimental results are discussed. Y1 - 2009 U6 - https://doi.org/https://doi.org/10.1109/PDP.2009.21 SP - 220 EP - 226 PB - IEEE Computer Society Press ER - TY - CHAP A1 - Schwarzkopf, Roland A1 - Mathes, Markus A1 - Heinzl, Steffen A1 - Freisleben, Bernd A1 - Dohmann, Helmut T1 - Java RMI versus .NET Remoting Architectural Comparison and Performance Evaluation T2 - Proceedings of the 7th International Conference on Networking (ICN) N2 - The implementation of distributed applications can be based on a multiplicity of technologies, e.g. plain sockets, Remote Procedure Call (RPC), Remote Method Invocation (RMI), Java Message Service (JMS), .NET Remoting, or Web Services. These technologies differ widely in complexity, interoperability, standardization, and ease of use. To achieve the highest efficiency, the use of plain sockets is advisable, whereas highest interoperability and standardization argue for Web Services. Real world applications requirements are a trade-off between efficiency, development costs, usability, reliability, interoperability, and so on. For example, a multimedia streaming application requires high performance to avoid delays, whereas Internet trading platforms depend on high interoperability, reliability and availability. Since Java RMI and .NET Remoting support fast development of highly efficient applications, many developers choose one of these technologies to realize their applications. Besides differences in design, the two technologies offer diverse performance characteristics. This paper has two main contributions: (1) a comparison of the design and architecture of Java RMI and .NET Remoting is presented, (2) an experimental performance analysis with respect to various aspects of both technologies is conducted. Y1 - 2008 U6 - https://doi.org/10.1109/ICN.2008.88 SP - 398 EP - 407 PB - IEEE Computer Society Press ER - TY - JOUR A1 - Heidinger, Florian A1 - Mathes, Markus A1 - Dohmann, Helmut T1 - Java Message Service (JMS) – Einsatz in der Industrieautomation JF - Automatisierungstechnische Praxis Y1 - 2004 IS - 5 SP - 61 EP - 70 PB - Oldenbourg ER - TY - CHAP A1 - Heidinger, Florian A1 - Mathes, Markus A1 - Dohmann, Helmut T1 - Werkzeug zur Visualisierung und Administration von Kommunikationsbeziehungen in nachrichtenorientierter Middleware T2 - CeBIT 2004 Y1 - 2004 ER - TY - JOUR A1 - Mathes, Markus A1 - Stoidner, Christoph A1 - Schwarzkopf, Roland A1 - Heinzl, Steffen A1 - Dörnemann, Tim A1 - Dohmann, Helmut A1 - Freisleben, Bernd T1 - Time-Constrained Services (TiCS): A Framework for Using Real-time WS in Industrial Automation JF - Service Oriented Computing and Applications (SOCA) Journal Y1 - 2009 VL - 3 IS - 4 SP - 239 EP - 262 PB - Springer CY - London ER - TY - CHAP A1 - Heinzl, Steffen A1 - Mathes, Markus A1 - Stadelmann, Thilo A1 - Seiler, Dominik A1 - Diegelmann, Marcel A1 - Dohmann, Helmut A1 - Freisleben, Bernd T1 - The Web Service Browser: Automatic Client Generation and Efficient Data Transfer for Web Services T2 - Proceedings of the 7th IEEE Int'l Conf. on Web Services (ICWS) Y1 - 2009 SP - 743 EP - 750 PB - IEEE Press ER -