Web Services Description Language (WDSL), originally developed by IBM, Microsoft, and others, is an XML format for technical description of Web services. In this tutorial, Mike Olson and Uche Ogbuji introduce WSDL4Py, an open-source Python library for WSDL 1.1 hosted by IBM developerWork’s open-source zone. Usage of the library is explained, as well as discussion of its development.
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Application server platforms are the most important category of application platform software for most enterprises. An application server platform is infrastructure software for building Web and composite applications and, increasingly, applications based on service-oriented architecture (SOA) design principles. An application server platform integrates an application server, which manages user requests, data access, and business logic, with portal servers and integration/business process management (BPM) servers — and often additional features, as well.
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Web services, an emerging paradigm for architecting and implementing business collaborations within and across organizational boundaries, are currently of interest to both software vendors and scientists. In this paradigm, the functionality provided by business applications is encapsulated within web services: software components described at a semantic level, which can be invoked by application programs or by other services through a stack of Internet standards including HTTP, XML, SOAP, WSDL and UDDI [3,18]. Once deployed, web services provided by various organizations can be inter-connected in order to implement business collaborations, leading to composite web services.
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Web sites today face many threats to the confidentiality and integrity of the data used and the functionality provided by the application. This problem is compounded by the fact that Web developers are simply lack of either adequate knowledge and skills in writing secure Web application codes (Huang et al., 2005) or sufficient testing methodologies for the audit and control of Web development (Mansouir and Houri, 2006). Works in the design and implementation of security measures for Web applications are greatly in need.
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All SimBLOX simulation products employ an agent-based or object-oriented architecture. This allows the user to create very large, complex, macro-level simulation models by connecting together many smaller, easily understandable, micro-level “building block” models. In this simple tutorial, we will show you how to use the Water Resource Planning SimBRIX.
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Silverlight is Microsoft’s cross-browser, cross-platform browser plug-in that allows the creation of interactive web applications that employ high quality streaming media, vector graphics, images, and animation. Deployed as a plug-in for the major browsers on the Windows, Mac and Linux (supported by Novell) operating systems, web developers can craft interactive applications that have an identical user experience on the vast majority of web browsers deployed today. Silverlight addresses a disconnect that exists today in web development workflow where the design intent of graphics designers and interaction designers cannot be faithfully communicated to and crafted by the web developers. In Silverlight, this intent is created in design tools like Expression Design and Expression Blend and passed off to web developers in XML-based XAML data files. The fidelity of the designers’ ideas is kept as there is a clear separation between the design in XAML and the code in JavaScript.
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If you’ve been watching the technical news or attended MIX ‘07, then you’ve probably been hearing about Silverlight (f.k.a. WPF/E). The idea behind Silverlight is simple — provide a cross-browser, cross-platform technology for 2D vector graphics, animations and DRM high-definition media. Currently, Microsoft is targeting the Mac using either Firefox or Safari and Windows using IE6/IE7 or Firefox.
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Install the following software components on Windows Vista machine with at least 2GB RAM:
1. Visual Studio 2008
2. ASP.NET Extensions preview (http://asp.net/downloads/3.5-extensions/)
3. Silverlight Developer Tools (http://silverlight.net/GetStarted)
a. Silverlight 2 developer runtime
b. Silverlight 2 SDK
c. Silverlight 2 templates for Visual Studio 2008
d. Expression Blend 2 SP1
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