My Stuff

2010 Conferences

OSGi DevCon @ JAX London

February 23 - Keynote titled OSGi in the Enterprise: Agility, Modularity, and Architecture’s Paradox

EclipseCon

March 22 - 25 - Tutorial on Modular Architecture

Über Conf

June 14 - 17 - Sessions titled Turtles and Architecture and Patterns of Modular Architecture

Catalyst

July 26 - 30 - Two sessions on rich mobile applications and one on agile development. Half day tutorial on software process improvement.

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Apple's profits for its latest quarter are $1 billion. That's $1 billion per week, by the way. http://t.co/wE6RglA5 1 week ago

If you know JavaScript and HTML, you can crete your own custom widgets in iBooks Author. That's pretty cool…#Apple 2 weeks ago

High School Textbooks also available. Major publishers are on board. Several volumes available today…#Apple 2 weeks ago

#Apple announces iBooks Author for OS X and iBooks 2. Using author, you can create your own interactive books for iBooks. 2 weeks ago

Nice #HTML5 site (html5rocks.com). Check out the Interactive Presentation & HTML5 vs. native comparison (http://t.co/UFTuafAE) via @mahemoff 2 weeks ago

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The opinions expressed on this site are my own, and not necessarily those of my employer.

Jan '09
12

JarAnalyzer on Spring OSGi

Filed Under Architecture & Design, Java, Metrics, OSGi, Platforms |  

I took the liberty of running JarAnalyzer on the OSGi bundles deployed as part of Spring 2.5.6. These are the JAR files found in the /dist/modules directory. Click the image at right to reveal the relationships between JAR files.

It’s interesting to see the dependency relationships and layering of the framework. Note that there are no cycles. I have always felt a significant advantage of Spring is the way development teams can incrementally adopt the framework. Start using core for basic dependency injection and move up the stack to JDBC and declarative transactions, ORM integration, and integration with your favorite web framework. It’s the flexible architecture of Spring that allows this. I’m guessing that when the Spring team went about modularizing the framework around OSGi, the architectural flexibility already embodied in previous versions of Spring made their job easier.

For those of you who want the more detailed information, you can view the JarAnalyzer html report for Spring 2.5.6 showing a variety of metrics related to design quality.

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