I would suggest spring ..but springs injected entities are *usually*
classical pojos such as DBDrivers
Here is a project which shows great promise of injecting whole listeners
which may be of help for your effort
http://oranjestad.sourceforge.net/spring-oranjestad.html
hyva?
Martin-
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----- Original Message -----
From: "Juha Laiho" <[EMAIL PROTECTED]>
To: <users@tomcat.apache.org>
Sent: Sunday, July 01, 2007 5:21 AM
Subject: How to inject a webapp listener?
Hello,
I would like to have the Tomcat container to inject a specific
ServletContextListener to each loaded webapp on my server - without
touching the individual web.xml files, and am looking for advise on
how to achieve this.
In other words, I'd like to have the container act as if there was
<listener>
<listener-class>MyListenerClass</listener-class>
</listener>
section in the web.xml file for each application?
Currently, I have added a ContainerListener on my Host, which
is listening on ADD_CHILD messages to discover newly added
StandardContext instances, and performs the following on each
new StandardContext (where ctx is a reference to the added context):
Object[] listeners = ctx.getApplicationLifecycleListeners();
Object[] newListeners = new Object[listeners.length+1];
System.arraycopy(listeners,0,newListeners,0,listeners.length);
newListeners[newListeners.length-1]=ctxListener;
ctx.setApplicationLifecycleListeners(newListeners);
With this, my listener is already able to capture the contextDestroyed
events from the webapp - but not the contextInitialized. It looks like the
Context is added to the host only after it has been already initialized.
What I'm looking for is a way to be able to inject the webapp listener
in an earlier phase, so that I can also capture the contextInitialized
messages. Any ideas? Also, if there's an overall better way to inject
the webapp listener, please let me know -- the above way feels rather
crude.
Thanks,
--
..Juha
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