On Tue, 10 Sep 2002, Turner, John wrote: > >From the 4.0 docs: > > If you have implemented a Java object that needs to know when this > Host is started or stopped, you can declare it by nesting a Listener > element inside this element. The class name you specify must > implement the org.apache.catalina.LifecycleListener interface, and > it will be notified about the occurrence of the coresponding > lifecycle events. Configuration of such a listener looks like this: [ ... ]
Is this a Tomcat-only feature, or is it in the servlet spec? If the former, be aware that if you use it your setup will not be portable. That may or not be an issue, but wanted to bring it up. > <Host name="localhost" ...> > ... > <Listener className="com.mycompany.mypackage.MyListener" ... > > ... > </Host> > > Note that a Listener can have any number of additional properties that may > be configured from this element. Attribute names are matched to > corresponding JavaBean property names using the standard property method > naming patterns. > > so basically it looks like you can have: > > Listener className="com.your.listener.class" param1="value1" param2="value2" > param3="value3" > > The parameters can be anything you want, like a pointer to a properties file > or anything else. > > John > > > > > -----Original Message----- > > From: Craig Longman [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, September 10, 2002 2:54 PM > > To: Tomcat Users List > > Subject: RE: Managing a Listener > > > > > > On Tue, 2002-09-10 at 14:21, Turner, John wrote: > > > > > > Why not just use a properties file? > > > > properties, xml, it doesn't really matter what the file is. > > > > i just want to figure out how to point the filter/listener TO > > the file, > > from the server.xml configuration file. and also how to find the > > logger, so that the filter can log events/info in the right place (as > > defined by the Logger element). > > > > i see now that the ApacheConfig listener appears to get > > information from > > the server.xml file.. it is defined as: > > > > <Listener className="org.apache.ajp.tomcat4.config.ApacheConfig" > > jkConfig="conf/jk/site_mod_jk.conf" /> > > > > i want to do something like that, have the jkConfig property in there > > and be initialized with the value. i'm still trying to figure out how > > it does that, its not clear to me at all, it looks like a lot > > of custom > > code. > > > > then i still need to figure out how to get the default logger from a > > filter. whew. > > > > > > -----Original Message----- > > > > From: Craig Longman [mailto:[EMAIL PROTECTED]] > > > > Sent: Tuesday, September 10, 2002 2:19 PM > > > > To: Tomcat Users List > > > > Subject: RE: Managing a Listener > > > > > > > > > > > > On Tue, 2002-09-10 at 14:11, Srofe, Douglas (c) wrote: > > > > > Craig, > > > > > > > > > > [...snip...] > > > > > > > > > > If this is not enough to get you started, I would be happy > > > > to fill in some > > > > > more specifics. > > > > > > > > i see your point, and that makes good sense. in my > > particular case, i > > > > think that the session would still be a better way to go > > though, all i > > > > really need is to have it configure the information once. > > > > > > > > my real problem is more generic i guess, how do i initialize > > > > a listener > > > > (or a filter for that matter) with some basic webapp > > information, like > > > > where to log, getting configuration information, etc. > > > > > > > > until now, i've always just done it via a servlet, but > > i'd like to use > > > > these new things (listeners/filters/etc) properly, but if i > > > > can't log or > > > > configure them from the server.xml file, then i will have to > > > > resort to a > > > > servlet. i hate not being able to log information from > > components. > > > > > > > > thanks! > > > > > > > > > > -- > > > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > -- > > CraigL->Thx(); > Be Developer ID: 5852 > > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > Milt Epstein Research Programmer Integration and Software Engineering (ISE) Campus Information Technologies and Educational Services (CITES) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED] -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
