----- Original Message -----
From: "Johnny Kewl" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Wednesday, June 04, 2008 4:43 PM
Subject: Re: How to run own java application within Tomcat
----- Original Message -----
From: "Slobodanka Dimitrijevic" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Tuesday, June 03, 2008 10:18 PM
Subject: RE: How to run own java application within Tomcat
Hi Johnny,
Thanks for the answer but I think I didn't explain my problem correctly.
I need the following situation:
1. a java application has to run continiously outside tomcat (when tomcat
crashes the application must be still running). This application runs in
its own virtual >machine (VM1).
when tomcat crashes... you have no faith ha ha... its tomcat, nothing
fishy about it ;)
2. I have also Axis2 webservices that have to have access to the objects
in VM1. These webservices run inside Tomcat. However Tomcat runs in its
own virtual >machine (VM2). So I have a problem.
Yes you do ;)
Question:
How to be able to run the java appplication (outside tomcat), and the
Axis2 webservices (inside tomcat), in the same virtual machine
As soon as you have applicatios in different VMs, you into interprocess
communications, RMI or the like.
Even if that is not true, and its TC and an external app in the same VM,
you have "ring fenced" class loader problems.
TC keeps itself away from the rest of the machine, which is actually a
good thing, else we'd all go insane.
Using traditional Java technology its going to be something like RMI, or
another cross process technique like sockets (your own rmi).
So soap call comes into TC, TC chats to external application thru a
socket, (or like the other poster suggested) an embedded TC app that also
has soap (a lot of work I think).
So thats what you got to do...
The POJO Application Server approach to this you may find interesting, but
its probably not want you want
TC(Application inside TC) ----------- Application used from Network or
Internet (looks like the original app to the user)
--------------------------------------- TC(Soap Application Using
Application inside another TC, or the same TC)
Thats how it would be done in a PAS.... but its inside TC and well, you
think TC is going to "crash"... we used to be friends ;)
Have fun....
Slobodanka, I just had another thought that you may want to read up on...
Java has an Extension class loader mechanism... but now we talking TC in the
same JRE at least.
Theres a folder in the typical JRE that one can drop classes into, and then
these are added to the JRE class path, so in theory TC should be able to
find the application.
There is also a way to add a class or application to the Extension Class
loader through the command line, I forget the details, but it will probably
be too late because if TC is a service its going to want it ewhen the
machine starts... so theres another maybe.
Just dont get this crazy idea... dont put the tomcat libs in the machines
classpath... thats beeeeeeeg trouble... no no ;)
Shouldnt even be talking to you... "tomcats going to crash" ;)
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