That is part of the reason, but technically we could do that with OFBiz running inside of Tomcat instead of Tomcat embedded in OFBiz. Actually, in the first few years of OFBiz it wasn't too hard to checkout, build, deploy, and run OFBiz when it was running inside another "app server". The default was Jetty for a long time because it wasn't necessary to copy all of the classpath resources to directories under the app server directory as is the case with Tomcat.

What it really comes down to is development and deployment convenience. There are hundreds of classpath entries and a couple of dozen webapps in OFBiz, plus other resources that J2EE app servers don't know anything about like Entity and Service Engine resources, test definitions, and so on. On top of this we don't want all of this to be in one big blob, but the different segmented parts need to be able to setup all of the resources they provide.

That is the reason for the Containers and Components in OFBiz. Some of this configuration and functionality can still be used when OFBiz is deployed in another app server, but much of it can still be used either through the template generation stuff or through the automatic run-time container loader to initialize OFBiz stuff (as opposed to the case where OFBiz starts on its own and embeds everything else and initializes them through a different containers file, the default ofbiz-containers.xml).

In short it is certainly possible to deploy OFBiz in another app server. Unfortunately standard deployment tools, like the EAR file, are not adequate for something like OFBiz because of limitations in the spec (like not being able to add things to the classloader shared by the webapps in the EAR).

The cost of deploying in another app server is usually such that the benefit gained is less, or sometimes little more than a rounding error compared to the cost. On the other hand, if you have a $1,000,000 Weblogic cluster or the like then the $40k to build the deployment scripts and templates and the $15k per year to maintain and use them is reasonable (those are rough estimates based on seeing such a thing done, and will vary greatly from one organization to another, and from one deployment plan to another, and from one app server to another).

Generally OFBiz runs just as well or better using the embedded tools, and supports all of the clustering and other functionality needed to deploy in large-scale environments. It also has the benefit of being a configuration tested by WAY more people than a custom deployment process in another app server.

In general the promise that J2EE apps can be easily written in abstract form and deployed on any compliant app server is one of the greatest missed opportunities (or mis-representations...) of the marketing and design behind the J2EE specs, and that's true whether you're talking about OFBiz or not.

-David


On Apr 21, 2008, at 10:49 AM, BJ Freeman wrote:
The biggest reason was to have an OOTB application.
just load and run.


Chris Howe sent the following on 4/20/2008 10:17 PM:
There was a particular reasoning for running tomcat embedded. What was
it?  If those issues are resolved, would it be better to tomcat
(non)embedded?  This would help quite a few integration issues.

I just did a quick run and it works.  However, there may be a
classloader issue. I had to copy the mysql jar to tomcat-x/lib because
it wasn't getting picked up in ofbiz/framework/entity/lib/jdbc .


--- "Jacques Le Roux (JIRA)" <[EMAIL PROTECTED]> wrote:

    [

https://issues.apache.org/jira/browse/OFBIZ-1738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jacques Le Roux closed OFBIZ-1738.
----------------------------------

      Resolution: Fixed
   Fix Version/s: SVN trunk

Thanks Ludovic,

Your "patch" is in trunk rev. 649921


I did not test anything, I just added ASL headers to bat and sh
scripts in the 55 branch and made a page in Wiki at
http://docs.ofbiz.org/x/gR from your how to.
I did so for 2 main reasons :
1. I have no time to test thorougly, and I suppose that it works from
your comments this issue
2. It's harmless for the project, only people interested may
encounter issues if any

Add support for running one instance of OfBiz under Tomcat
----------------------------------------------------------

               Key: OFBIZ-1738
               URL:
https://issues.apache.org/jira/browse/OFBIZ-1738
           Project: OFBiz
        Issue Type: New Feature
        Components: framework
  Affects Versions: SVN trunk
       Environment: Mac OS X 10.5.2, JDK 1.5.0_13
          Reporter: Ludovic MaƮtre
          Assignee: Jacques Le Roux
          Priority: Minor
           Fix For: SVN trunk

       Attachments: ofbiz-tomcat-setup.zip, tomcat.zip

 Original Estimate: 8h
Remaining Estimate: 8h

This issue provide templates and patchs to run one instance of
OfBiz under Tomcat.
The templates are used to:
- setup the classpath of Tomcat, (catalina.properties)
- declare the ofbiz webapps in the server configuration
The files generated from the templates, with the command 'java -jar
ofbiz.jar -setup tomcat', should be copied in the $CATALINA_HOME/ conf
folder of Tomcat.
IIRC there is also some setup to perform in the first loaded
webapp, and a few other modifications in the code, i will digg into
it this evening (French riviera time) and create a patch which will
be added to this issue. (the full code is also published on my
subversion server:
http://forge.ubik-products.com/repositories/apache-ofbiz/trunk/ , but
good luck to find the relveant parts :-))
Best regards,
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