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Spring.NET 1.1 application framework described at TechEd
By Jack Vaughan
At least a bit of open-source software was visible at Microsoft TechEd in Orlando via Interface21. The company released its Spring.NET 1.1 application framework and discussed its potential role in improving developer productivity at two technical sessions. Spring.NET grows out of the Spring Framework programming model originally created for Java, bringing a readily usable form of dependency injection to .NET development. The framework also introduces concepts familiar in Aspect-Oriented Programming. Built and supported by Interface21, the software is available through an Apache-style license.
Spring.NET joins Microsoft’s Enterprise Library, Rocky Lhotka’s Business Object Framework and other architectures that seek to codify lessons learned over the years in building object-oriented systems. By encoding best practices, application frameworks seek to better automate portions of developer tasks that are especially code-heavy and error prone. For Spring.NET, the interfaces between software modules are key.
Spring.NET pushes you to “code to the interfaces,” said Mark Pollack, principal consultant and lead of the Spring.NET project. And, because it simplifies coding to interfaces, Spring.NET better facilitates testing, said Pollack.
“One of the central elements of Spring.NET is for application configuration. So, when you’re trying to code to interfaces you can very easily configure an object to retrieve those dependencies that it has instead of actually writing a factory class or other boiler plate code” said Pollack. “And, as a result, you get built-in support for things like the Singleton pattern and the ability to be lazily initialized.”
“The side benefit is you are able to now have a better chance of really doing test-driven development because you can put in stub implementations for those interfaces,” he continued.
This framework may find a special role in mixed Java-.NET enterprises. With the .NET version of Spring, data access abstraction methods can extend beyond the Java platform, Pollack said. In effect, some .NET and Java developers may find a common ground, and this may reduce the inevitable ‘reinventing of the wheel’ common in many two-platform IT shops.
The Spring.NET 1.1 release features the following: Dependency injection for ASP.NET pages; declarative transaction management via XML configuration and attributes; ADO.NET data access framework support; NHibernate 1.0 and 1.2 integration; and NUnit integration.
Moreover, the framework now allows use of custom name spaces for AOP and transaction management.
http://www.interface21.com/
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