Server-side OSGi, is it really useful ?

The recent Paris JUG was an opportunity to talk about OSGi technology, already mentioned several times in this blog, and continues to hear about it. Although OSGi is present on the client side with Eclipse, the development of the server side and especially in Java EE environment sometimes leaves developers not convinced. Spring Source (Spring DM server), ObjectWeb (JOnAS), Sun (Glassfish) and IBM (WebSphere 6.1) have clearly made the choice. What are the real benefits for our applications on server side? […]

The recent Paris JUG was an opportunity to talk about OSGi technology, already mentioned several times in this blog, and continues payday loans hawaii to hear about it. Although OSGi is present on the client side with Eclipse, payday loan the development of the server side and especially in Java EE environment sometimes leaves developers not convinced. Spring Source (Spring DM server), ObjectWeb (JOnAS), Sun (Glassfish) and IBM (WebSphere 6.1) have clearly made the choice. What are the real benefits for our applications on server side?
First don’t forget OSGi is a specification designed for the embedded payday loans online no credit check domain. This make an implementation without the new Java 5 features : annotations, generics, etc … and that makes us appear OSGi like an old technology. But OSGi stay attractive http://onlinepaydayloansusca.com because what is important above all is the concept: modularization. Concept that on each ear of OOP developer can not be ignored. By development on development we have castle payday tried to improve the way we write code, trying to organize it to not create inter-dependencies and go over possible reusability. The arrival of the DI pattern help us to do that and the success of payday loan Spring is a good example. OSGi creates a continuity in offering us an infrastructure that obliges us to respect the rules and allows us to dynamically manipulate our components. The dynamic aspect and hot deployment is the icing on the cake but this is not what makes OSGi essential on server side, the current deployment technics with clustered servers, or even with the simple WebObjects Monitor tool, help us to update applications gracefully. What is interesting it’s how the code is organized and the hierarchy throw the management of dependency imposed by OSGi, in application servers and applications themselves.
So in fact this specification is not suited to Java EE and remains technically difficult to understand, but the concept of apply now paydayadvanceusca.com modularization is a good approach to improve the quality of our developments. That is why Spring focused on because it fits with their framework.
Moreover reconciliation between JCP and OSGi promises well, I http://paydayloansonlinecaus.com/ hope in the right direction, to make the best of 2 worlds, i.e. all payday the heist existing OSGi in one hand and the server aspect and Java 5 new payday advance features for Sun on the other.
However, we must not forget the dynamic payday loans near me aspect because although users are not insist to see a new button dynamically appear at each time thez need a new functionnality, the fact is with OSGi it is technically possible. But is it really an improvement, actually with a web application it is also possible in PHP, in Java (must reload online payday loans ohio session). For RIA this becomes more complicated because part of the functional is deported on the client side and update requires complete reloading. This is typically what Chris Brind has managed to improve by http://paydayloansonlinecaus.com combining Flex and OSGi with Solstice. This framework show the potential of modular approach in this domain.
Again what is important is the concept, the modular approach will bring us more quality in our development and greater flexibility in deployment. Let the community choose the best technology to do it…

Une réflexion sur « Server-side OSGi, is it really useful ? »

  1. While it’s certainly true that WebSphere uses OSGi to implement the application server, no attempt is made to surface this fact to the users. It’s effectively completely hidden from them. So the users of WAS continue to use JEE APIs and are not in a position to exploit OSGi’s benefits directly.

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