On Jul 28, 2006, at 11:22 AM, Maurice Yarrow wrote:

Hello Raju

Try OpenEJB, which can be run in both tomcat-embedded mode
(drop their openejb_loader .war into tomcat/webapps)  and
also a detached server  mode.
http://openejb.codehaus.org/download.html

This is an open-source product, and they have a good e-mail
user support  community.  It is a decent product and provides
a good interface between the Java obj's and the beans.
You simply write your beans and your sql, run a tool of
theirs on this, and it creates a bean jar and configuration
file with the sql embedded in it.


Thanks for the comments, Maurice.

Just to add a note on this thread. The Tomcat/OpenEJB integration now runs in three modes. The first two are as you mentioned: OpenEJB beside Tomcat in a separate VM; OpenEJB embedded into Tomcat and available to all webapps. The new third style is OpenEJB embedded into a *webapp* and available only to that webapp -- each webapp can have it's own private ejb container. The webapp can even have remote ejb clients that communicate with it's ejbs over HTTP. With this style, you don't even have to have a separate ejb archive -- you just add a META-INF/ejb-jar.xml file to your webapp and you're done.

That's pretty much my preferred integration style now. More details here: http://openejb.codehaus.org/Tomcat


-David




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