Many thanks for this Mike - it is indeed a ClassLoader problem.
I'm using Tomcat 4.1 running under JBoss 3.2.3. The default out-of-
the-box configuration sets Tomcat to use JBoss's web class loader,
which (it seems) tries to 'share' as much stuff as possible -- i.e.
contrary to Tomcat's usual behaviour when running stand-alone.
Fortunately the fix is simple: set the 'UseJBossWebLoader' attribute
to false in '.../tomcat41.sar/META-INF/jboss-service.xml'
Cheers,
neale
On 30 Dec 2005, at 18:38, Mike Schrag wrote:
Each war deployed in tomcat runs with its own classloader, so as
long as WOServletAdaptor is in a jar inside of your war, it will be
loaded in its own classloader context and will have its own "copy"
of static fields. If, however, WOServletAdaptor is loaded in the
TOMCAT classloader (i.e. in tomcat's top level classpath), then
you're in for a rough ride.
ms
On Dec 30, 2005, at 11:13 AM, Neale Patton wrote:
Has anyone on this list successfully managed to deploy two
distinct WebObjects applications in the same container?
Unsurprisingly the official documentation is scant in this regard
and the only reference to this seems to imply that it can be done.
http://developer.apple.com/documentation/WebObjects/
JSP_and_Servlets/SpecialIssues/chapter_4_section_2.html
However what concerns me is not system properties but more the
role of WOServletAdaptor in the request handling.
It seems from the javadoc that WOServletAdaptor is not intended to
be subclassed and as such makes extensive use of static members.
What troubles me the most is that the WOApplication object is
accessed via a static method. If the WOApplication instance is a
static member of WOServletAdaptor and WOServletAdaptor cannot be
subclassed how on earth can we have multiple distinct WO
applications running in the same container? I hope I'm missing
something obvious.
Regards,
Neale Patton • CPS Development
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