Demonstration of hyper-programming in Java

We demonstrate the use of a hyper-programming system to build persistent Java applications in PJama, an orthogonally persistent version of Java. This allows program representations to contain type-safe links to persistent objects embedded directly within the source code. The potential benefits include greater potential for static program checking, improved efficiency, and reduced programming effort.Postprin

Hyper-programming in Java

Hyper-programming is a technology only available in persistent systems since hyper-program source contains both text and links to persistent objects. A hyper-programming system has already been prototyped in the persistent programming language Napier88. Here we report on the transfer of that technology to a more commercial platform, Java. The component technologies required for hyper-programming include linguistic reflection, a persistent store, and a browsing mechanism, all of which have been reported elsewhere. The topics of discussion here are the additional technologies of: the specification of denotable hyper-links in Java; a mechanism for preserving links over traditional compilation; a hyper-program editor; and the integration of the editor and the browser with the hyper-programming user interface. We describe their design and implementation. In total these technologies constitute a hyper-programming system in Java.Postprin

Using generative programming to visualise hypercode in complex and dynamic systems

The research presented here takes place in the context of the EC Funded ArchWare project which focuses on innovative architecture-centric languages, frameworks and tools for engineering evolvable software systems. Of particular interest are complex and dynamic systems characterised by the need to evolve to meet changing requirements without total shutdown or the loss of state information. The ArchWare approach uses the unique combination of a pi-calculus based architecture description language, persistence and hypercode. Hypercode provides the essential base technology for composing and decomposing system components without losing state. The contribution of this work is an implementation of hypercode using generative programming techniques to produce different hypercode visualisations.Publisher PD

Process support for evolving active architectures

This work is supported by the EC Framework V project ArchWare (IST-001-32360), and the UK Engineering and Physical Sciences Research Council (EPSRC) under grants GR/R51872 (Reflective Application Framework for Distributed Architectures) and GR/R67743 (my Grid: Directly Supporting the E-Scientist).Long-lived, architecture-based software. systems are increasingly important. Effective process support for these systems depends upon recognising their compositional nature and the active, role of their architecture in guiding evolutionary development. Current process approaches have difficulty with run-time architecture changes that are not known a priori, and dealing with extant data during system evolution. This paper describes an approach that deals with these issues. It is based on a process-aware architecture description language (ADL), with explicit compose and decompose constructs, and with a hyper-code representation for dealing with extant data and code. An example is given to illustrate the ease-of-use benefits of this approach.Postprin

Demonstration of Hyper-Programming in Javaª

We demonstrate the use of a hyper-programming system to build persistent Java applications in PJama, an orthogonally persistent version of Javaª. This allows program representations to contain type-safe links to persistent objects embedded directly within the source code. The potential benefits include greater potential for static program checking, improved efficiency, and reduced programming effort. 1