Andreas Schaefer's Blog

A Generic Application Server

Since over a year I am thinking about the next generation Application Server that takes the route of JBoss as an flexible J2EE based server and just go through with it and make everything generic. In this server everything is deployable like Containers, Services (as of Transaction, Security, Persistence, Pooling etc) and Applications. The application server specification is replaced by a contract each deployment unit exposes with their requirements and features they offer. The server will then match the components together so that a fully deployed application is formed. If a component is missing a deployment unit will remain inactive until everything becomes available. Even a naming service is deployed and therefore one server can hosts multiple naming services at once.

Such a server allows an administrator to tailor the server to the hosted applications needs and nothing more. So if no Entity Beans are needed this Container must not be deployed. If an Entity Container is needed based on JDO either a particular JDO Container or a JDO Persistence Service is deployed. It would also allow a Container to expose the Home and Remote Interface in a JMX fashion where a global interface exposes the list of supported methods as well as their invocation. I guess, this would make Web services much simpler.

For more information about this ideas please feel free to visit my personal log.

Comments

• Yes, there is life after J2EE!
  At my project here at java.net I have a really generic application server. In fact it is so generic, its entire implementation consists of just one class. Yet it is also extremely powerful.

  Please come and visit, to see a glimpse of what can come after J2EE; a small, simple, elegant, and even more flexible framework:

  https://cajo.dev.java.net

  Highest regards,

  John

  Posted by: cajo on February 25, 2004 at 04:02 PM

• yes
  It's the eclipse extension point/extension concept.

  It's the j2ee connector 1.5 which is deployed and lets you deploy message driven bean in it.

  It's the java virtual machine which calls every class that has a method 'public static String main (String [] argv)'.

  Yes, I also sent many mails around saying that a general framework should be build around this.

  It has point of contacts with the management of dependencies between libraries and components, with isolates and the management of single loading of share libraries, so in my opinion this framework should exists at the j2se level, not j2ee.

  let's hope that something will grow out of these concepts.

  Posted by: ygmarchi on February 26, 2004 at 05:59 AM

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