Is the location where I expect these .jar's the restricting factor, or is it 
the fact that I want to load .jar's that were added after deployment time?

I can't use OSGi.

By custom SPI you mean "Service Provider Interface" and by own loader you mean 
an implementation of Tomcat WebappClassLoader? Do you have any hints?


I was told to do this through CDI. Then I was told to do this through EJB. Are 
you sure it can only be done with OSGi?

Thanks!  


Op zaterdag 18 mei 2013, om 01:22 heeft Romain Manni-Bucau [via OpenEJB] het 
volgende geschreven:

> In java only OSGi could do it but you ll loose a lot of the simplicity you  
> have ATM....  
>  
> Maybe just using a custom spi with your own loader would be enough but i  
> really doubt of the use case (+ i think it should be forbidden in prod)  
> Le 18 mai 2013 01:06, "Caroline" <[hidden email] 
> (/user/SendEmail.jtp?type=node&node=4663043&i=0)> a  
> écrit :  
>  
> > I have a web application which provides an interface A. Upon receiving a  
> > request from a client, with implementation names in it, I want my web  
> > application to look in a certain folder /my/folder/*.jar on my TomEE for  
> > these implementations to interface A. Then, I want my web application to  
> > use those implementations.  
> >  
> > Previously, using CDI Injection and a jars.txt " I was able to exactly do  
> > that, using beans I added before deployment.  
> >  
> >  
> > Furthermore, I want my web application to be able to find beans that were  
> > added in this particular /my/folder/*.jar AFTER deployment time.  
> >  
> > An example: let's say I have AImplOne implements A in a .jar in  
> > /my/folder/. My web application is deployed. A client requests an action  
> > with AImplOne. My web application is able to instantiate an AImplOne object 
> >  
> > through A a = InitialContext.lookup();. A client requests an action with  
> > AImplTwo. This implementation is not available in /my/folder/ and the web  
> > application is not able to instantiate an AImplTwo object. I add a .jar  
> > with AImplTwo implements A to /my/folder/. A client requests an action with 
> >  
> > AImplTwo. This time, a .jar containing AImplTwo IS available in  
> > /my/folder/. The web application is able to instantiate an AImplTwo object  
> > through A a = InitialContext.lookup();.  
> >  
> >  
> > I was trying the above with CDI previously, until I learned from you guys  
> > that is impossible. I was under the impression I could do this with EJB's.  
> >  
> >  
> > Op zaterdag 18 mei 2013, om 00:45 heeft Romain Manni-Bucau [via OpenEJB]  
> > het volgende geschreven:  
> >  
> > > You can't update on the fly dropping jar in a war (wouldnt mean anything  
> > > seems app is linked at startup). Not sure what you expect here but maybe  
> > > have a look to jrebel or fakereplace.  
> > >  
> > > If you want just autodeploy an app (not a part of app) we have it now  
> > > through deployments config in tomee.xml or openejb.xml but i think thats  
> > > not what you want at all.  
> > >  
> > > Can you explain your need please? It sounds like youll break the memory  
> > at  
> > > a moment doing it this way...  
> > >  Le 18 mai 2013 00:29, "Caroline" <[hidden email]  
> > (/user/SendEmail.jtp?type=node&node=4663041&i=0)> a  
> > > écrit :  
> > >  
> > > > Awesome :)  
> > > >  
> > > > I learned the JNDI names are printed when I start my webapp.  
> > > >  
> > > > Using your instructions on my sample project, I was able to load  
> > in-project  
> > > > implementations through "java:comp/env/plaininput".  
> > > >  
> > > > I can load implementations from an outside jar with  
> > > > "java:global/Aree/sqlitereadonlyreasoner".  
> > > > This works when I:  
> > > > - put a dependency to the jar in my pom.xml; or  
> > > > - define a VirtuallWebappLoader for /a/folder/*.jar through  
> > context.xml; or  
> > > > - add /a/folder/*.jar to jars.txt  
> > > >  
> > > > However, I can't seem to come up with a configuration that allows me to 
> > > >  
> > > > drop  
> > > > in *.jar files AFTER deployment and load them through an  
> > > > InitialContext.lookup(); call.  
> > > >  
> > > >  
> > > > I read  
> > > >  
> > > >  
> > http://openejb.979440.n4.nabble.com/stand-alone-Application-looks-up-remote-EJB-by-global-jndi-name-td4663033.html
> > > > but 1.6.0-SNAPSHOT of May 17 isn't doing it yet for me either.  
> > > >  
> > > >  
> > > >  
> > > >  
> > > > --  
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