Broad variety of support and consulting services for their distributed open source solutions. Nevertheless, these open source projects do not include an inherent warranty or legal liability. Due to its benefits, the dual license approach is becoming increasingly popular. Several well- known companies such as MySQL, Sun, and Ghostscript are using this licensing model. Small and medium-sized software companies can use this approach as a business model to gain and expand new customer bases.
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In 1991, a group of Sun Microsystems engineers led by James Gosling decided to develop a language for consumer devices (cable boxes, etc.). They wanted the language to be small and use efficient code since these devices do not have powerful CPUs. They also wanted the language to be hardware independent since different manufacturers would use different CPUs. The project was code-named Green.
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This paper explains our efforts to add Ada to Microsoft’s family of .NET languages. There are several advantages to weaving Ada into the Common Language Environment provided by the .NET environment. This paper explains our approach and current progress on the research. We provide the means to extract Ada specification files from Microsoft Intermediate Language (MSIL) code and compile Ada programs into MSIL.
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Borland Delphi is known to be a great environment for the development of stand-alone and client-server applications on the Microsoft Windows platform. Its virtues range from full OOP support to visual development, in a unique combination of power and ease. However, the new frontier of development is now Internet programming. What has Delphi got to offer in this new context? Which are the features you can rely upon to build great Internet applications with Delphi? That’s what this paper intends to reveal. We’ll see that Delphi can be used:
• For direct socket and TCP/IP programming;
• In conjunction with third-party components that implement the most common Internet protocols, on the client or the server side;
• To produce HTML pages on the server side, with the WebBroker and Internet Express architectures;
• As well as to work with Microsoft’s core technologies, including MTS, COM, ASP, and ActiveX.
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FitNesse is a great Web-based collaboration tool for software testing, which can really help to test- drive the code and build a framework for holding the project together during big changes and re- factoring. It makes writing and running automated tests easy and allows test-driven software teams to share knowledge and expectations. Under the hub, FitNesse runs FIT (Framework for Integrated Testing). Both FitNesse and FIT are open-source tools, and together they are very popular as a testing framework in the Java community. Although FitNesse supports testing .Net code, some things don’t quite work out of the box or do not follow official on-line documentation. However, the integration is stable, and I guarantee that the effort required to start using FitNesse is worth it.
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DOT NET is one of the key products that enable application development under the new vision. However, DOT NET is not quite backward compatible with prior versions like visual basic version 6. This makes migration a serious issue. Converting existing source code to DOT NET architecture is not just a matter of loading it to the new version. DOT NET has its built-in migration tool, which performs the vital task of converting the source code syntax. But that’s just half of the work done. But before the converted code is actually compiled, the developer needs to enable it to smoothly fix lot of issues to fit into DOT NET architecture. In present efforts to find out solutions to these migration issues, a re-engineering Migration Model for Legacy Source Code (MMLC) has been proposed in this study. Proposed model has been further validated using a in-house project at one of the leading software development organisation. It is envisaged from the experimental try-out that the model would help the developer community to easily convert their legacy source code to DOT NET framework.
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Virtual Observatory (VO) is a collection of interoperating data archives and software tools. Taking advantages of the latest information technologies, it aims to provide a data-intensively online research environment for astronomers all around the world. A large number of high-qualified astronomical software packages and libraries are powerful and easy of use, and have been widely used by astronomers for many years. Integrating those toolkits into the VO system is a necessary and important task for the VO developers.
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Windows Presentation Foundation (WPF)
WPF provides a unified framework for building applications with rich user interfaces and interactivity. It is built on top of the .Net Framework and makes use of the managed and unmanaged code. WPF programming model allows the developers to write code once and deploy it as a standalone installed application or in a browser.
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