RE: Aonyx and Catalina

Sorry I don't have much to contribute to this thread, but here's the 
class-loading info for tomcat 4.1
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/class-loader-howto.html
mike
-----Original Message-----
From: Scott Dietrich [mailto:sdietrich@xxxxxxxxx]
Sent: Thursday, October 31, 2002 5:03 AM
To: enhydra@xxxxxxxxxxx
Subject: Re: Enhydra: Aonyx and Catalina


On Thursday, October 31, 2002, at 04:32 AM, busch@xxxxxxxxxxxxxxxx 
wrote:

>> You shouldn't have to do anything special. Did you restart tomcat 
>> after
>> moving the jar files? You shouldn't have to change your app's
>> Server.ClassPath[] (unless it has relative path names in it).
>
> Of course I restarted Tomcat
>
>>> Putting the libs into the webapps directory results in an
>>> ClassCastException for some reason...
>>>
>>
>> When is this exception being thrown?
>
> When I try to first access a page from Enhydra-Context. The
> Stacktrace starts with a Ajp13 Class in the beginning, and on the
> top it said ClassCastException for the class which extends the
> Enhydra StandardApplication class
>
> Danny
>

Its hard to see exactly what's going on here. In the first case (with 
AutoReload = true), the enhydra HttpPresentationServlet is calling 
application.getClass().getClassLoader() and casting the result to 
MultiClassLoader...but the result is actually a 
org.apache.catalina.loader.StandardClassLoader object, so its throwing 
an exception.

In the second case (AutoReload = false), it looks like the "state" 
instance variable of StandardApplication is being set to 
Application.INCOMPLETE at some point, so when your app gets a request, 
HttpPresentationServlet first calls your app's "restartup" method, and 
the default implementation of this (in StandardApplication) does 
nothing but throw the ApplicationException you see. However it doesn't 
look like enhydra will ever set the application's state to 
INCOMPLETE...is it possible you do this somewhere in your application?

Are you setting "<load-on-startup>1</load-on-startup>" in the app's 
web.xml file? Does the application seem to start up properly (display 
enhydra startup message, etc.)? Did you try adding DEBUG to the app 
conf's  Server.LogToFile[] line to see if anything unusual showed up?

Scott

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