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Richard Wallace <[EMAIL PROTECTED]> on 13/02/2003 02:19:41
Please respond to "Avalon framework users" <[EMAIL PROTECTED]>
To: Avalon framework users <[EMAIL PROTECTED]>
cc:
Subject: Re: [Newbie] Running Merlin
On Wed, 2003-02-12 at 06:40, Stephen McConnell wrote:
> On the subject of early failure - I don't see how your going to get a
> fail condition earlier than init() - unless Merlin is hosting the
> web-server --> webserver is hosting a web-app --> web-app is suppled
> with services based on dependencies that are pre-assembled by Merlin
> (which is possible using the embedded Tomcat approach).
>
Actually, if you specify the servlet to be loaded at startup the init is
called right away. Check out the <load-on-startup> element for a
servlet.
The short and skinny of it is that if the value is 1 or more then the
servlet is initialized when it is deployed. The value determines where
it is in the order of initialization, with 1 being the highest
precedence. So, to have a servlet be the first loaded when deployed you
want your web.xml to look like the following.
<web-app>
...
<servlet>
...
<load-on-startup>1</load-on-startup>
</servlet>
...
</web-app>
Using this parameter the initialization will fail at deployment giving
you the error messages before the first user hits it.
<REPLY>
I actually found that on WebSphere 4.0 <load-on-startup> with any value
will
load the servlet on startup. We had previously believed that '0' would not
load the servlet. This caused us some problems. Meant I had to get changes.
Not sure what other Web Containers do orwhether this behaviour is
non-standard.
You may need to make sure about this behaviour.
</REPLY>
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