RE: My small, simple problem continued... (null container for my valve)

["Craig R. McClanahan" <cr...@apache.org>]

On Tue, 10 Jul 2001, Kedar Hirve wrote:

> All right, I think I figured it out, and it seems a little strange. I was
> checking to see what the container for my valve was, in the
> _constructor_...the constructor is getting called before any of the
> heirarchy tree is built, it seems. Does Catalina load up components and run
> constructors in-order, rather than pre-order?
> 

For the record, Catalina assumes that all components can be instantiated
dynamically with newInstance(); then initialized by having the appropriate
setXxxx methods called; and finally (if it implements Lifecycle) then
start() will be called.  Therefore, testing for stuff in the constructor
is not going to work.

> One odd question, though...when IS the invoke method of a valve called?
> 

It is called once per request.  If you nest it inside a <Context>, as your
example indicates, then every request for that webapp will flow through
your Valve, but no request for any other webapp.


> -KSH
> 

Craig


> -----Original Message-----
> From: Remy Maucherat [mailto:remm@apache.org]
> Sent: Monday, July 09, 2001 5:57 PM
> To: tomcat-dev@jakarta.apache.org
> Subject: Re: My small, simple problem continued... (null container for
> my valve)
> 
> 
> > Oh, WOW. It did work, and I didn't even have to modify Catalina's startup
> > classpath. I had tried putting the class under common\lib and server\lib,
> > but I didn't know that common\classes would work. But now I've got another
> > problem...
> 
> In the lib folders, you can only put jars. Un-jarred classes should be in
> the classes folders. That's mentioned in the CL docs.
> 
> The best place to put your valve here is in server/classes/
> 
> > Again, I have this barebones valve class I wrote, and I've gotten it to
> load
> > up without exception in Catalina. Now, oddly enough, I find that my valve
> > has a null container, even though its nested in a context in my
> server.xml:
> >
> > <Context className="org.apache.catalina.core.StandardContext" path="/"
> > debug="0"
> >  docBase="/" reloadable="true">
> >
> >    <Logger className="org.apache.catalina.logger.FileLogger" verbosity="1"
> >     directory="/logs/kedlog" prefix="valvetest" timestamp="true" />
> >
> >    <Valve className="org.apache.catalina.valvetest.KedValve" />
> > </Context>
> >
> > Is there some initialization I need to do, or am I forgetting some tags in
> > my server.xml?
> 
> Does your valve extend ValveBase or implement Contained ?
> 
> Remy
>