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Plug-in architectures enable developers to build extensible software products. Such products are assembled from plug-ins, and their functionality can be enriched by adding or configuring plug-ins. The plug-ins themselves consist also of multiple plug-ins, and offer dedicated points through which their functionality can be influenced. A well-known example of such an architecture is Eclipse, best known...
Although there have been many benefits of Domain-Specific Languages (DSLs) reported from both academia and industry, implementation of DSLs continue to face challenges with respect to frequent evolution of both syntax and semantics. Techniques for implementing DSLs also lack interoperable capabilities among base languages and limited tool support. Such challenges result in increasing DSL development...
Cloud/Grid environments are characterized by a diverse set of technologies used for communication, execution and management. Service Providers, in this context, need to be equipped with an automated process in order to optimize service provisioning through advanced performance prediction methods. Furthermore, existing software solutions such as GNU Octave offer a wide range of possibilities for implementing...
A real-time control system has been operating successfully for the TJ-II stellarator since 1997. It was designed and built as a set of distributed and autonomous systems based on VMEbus and OS9 RTOS. At present, an upgrade, based on the VxWorks operating system, is being undertaken. As this process is gradual, both current and future real-time control systems must work simultaneously until this upgrade...
While web services greatly reduce the cost and complexity of integrating systems; they also introduce a number of additional challenges for testing because web services require standards, API, communication protocols and architecture that are not fully supported by traditional software testing methods and tools. In this paper, we discuss a software framework for providing a variety of test inputs...
Cheddar is a framework dedicated to the specification of real-time schedulers, and to their analysis by simulation. It is developed in Ada. Some parts of its modular architecture are generated by Platypus, a software engineering tool based on the STEP standards. Cheddar owns a dedicated specification language. It can also process AADL v1 specifications. In order to extend the scope of Cheddar to AADL...
Agile requires accordingly agile software architecture and programming tools. For web development popular agile architecture is MVC (Model-View-Controller). For transferring data between controller and view XML is very suitable. And to transform it into final form it's better to use XSLT. XSLT is not very popular among developers, because they think this is just yet another “strange” language, without...
Service-enabled applications have become a need in todaypsilas environment of mashups and Web 2.0. Traditional SOAP-based Web services and Representational State Transfer (REST) are alternatives as the popularity of these applications grows. REST has recently gained visibility and its lower entry barrier seems adequate for many applications. This paper proposes the configuration of an applicationpsilas...
Service-oriented Grid frameworks offer resources and facilities to support the design and execution of distributed applications in different domains, ranging from scientific applications and public computing projects to commercial and industrial applications. A critical issue in such a context is the management of the heterogeneity of resources and services offered by a Grid, including computers,...
Large and complex systems design is still being a challenge even bigger when developing embedded, distributed or real-time systems. OSGi is a platform created to reduce some of the software design problems, increasing reusability, modularity, etc. While, MDA is also designed to simplify software process development using different modelling layers. This paper describes how OSGi services can be designed...
Multi-processor system-on-chip (MPSoC) design is profiting considerably from the trend towards model-driven design. Design choices in this area cover considerations on alternative parallellisations of application software, alternative architectures for the hardware platform and different ways to map applications onto the platform. Various paradigms exist for modelling applications and also for modelling...
The model driven architecture (MDA) offers a more efficient software engineering process by raising the level of abstraction. Tool support for the MDA is usually limited to generating code from UML diagrams. Most MDA examples in scientific papers are limited to relatively simple use cases that help the understanding of the MDA, but are not suited to demonstrate the powers and flexibility of the MDA...
In a multi-site software development setting, creational and validational activities can be distributed and carried out by separate teams. An example of such a distributed development setup is when a system implemented in site A needs to be validated in a remote site B with regard to the component interaction rules dictated by the system architecture. In the current software engineering practice,...
REportal is an existing Web-based reverse engineering portal Web site that provides access to a suite of reverse engineering and program comprehension tools via a Web browser. This abstraction was intended to allow ease of system maintenance by adding and upgrading tools without involving the end user. However, the software tools and server technologies used became deprecated so quickly that it was...
ADAPT is a tool that aims at easing the task of evaluating dependability measures in the context of modern model driven engineering processes based on AADL (Architecture Analysis and Design Language). Hence, its input is an AADL architectural model annotated with dependability-related information. Its output is a dependability evaluation model in the form of a Generalized Stochastic Petri Net (GSPN)...
Object-role modeling (OEM) is a fact-oriented approach for specifying, transforming, and querying information at a conceptual level. Unlike entity-relationship (ER) modeling and unified modeling language (UML) class diagrams, ORM is attribute-free, treating all elementary facts as relationships. For information modeling, fact-oriented graphical notations are typically far more expressive than other...
The paper presents a practical approach to construction of a software tool, which will be suitable for deployment of Java components in distributed and heterogeneous testbeds. Requirements of such a system are identified, and a suitable architecture, which is scalable and allows the installation and starting Java applications on chosen computational nodes, is proposed. The modular architecture of...
Legacy programs, i. e. programs which have been developed with an outdated technology make-up for the vast majority of programs in many user application environments. It is these programs which actually run the information systems of the business world. Moving to a new technology such as service oriented architecture is impossible without taking these programs along. This contribution presents a tool...
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