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From Giacomo Pati <>
Subject Re: Cocoon Maven plugin - Merging deployer & rcl
Date Wed, 02 May 2007 19:01:32 GMT
Hash: SHA1

Reinhard Poetz wrote:
> Giacomo Pati wrote:
>> Reinhard Poetz wrote:
>>> Giacomo Pati wrote:
>>>> Now this seems to me that some changes with the RCL prevents third
>>>> party servlet filters to access
>>>> the ApplicationContext, or am I wrong?
>>> no, that's my interpretation of the stacktrace too
>>>> Any pointers?
>>> The problem is that when the app context gets reloaded, there is a time
>>> frame, when the context is not available. At the moment I only have a
>>> vague idea how we can prevent e.g. the acegi filter from accessing a
>>> (temporarily) non-existing context.
>>> Maybe we can provide some kind of wrapper for the app context that locks
>>> the access to the app context in question for the time of
>>> reinitializiation.
>> Sounds kinda complicated. Where is would such a thing be located in
>> the code?
> I've had some more thoughts about this and I believe that we don't need
> to go that far. We only have to make sure that all servlets, filters and
> listeners that we inject are being rewritten so that they get wrapped by
> their "Reloading*" equivalents, e.g. see the dispatcher servlet:
>       <servlet>
>         <servlet-name>DispatcherServlet</servlet-name>
>         <display-name>DispatcherServlet</display-name>
>         <description>Cocoon blocks dispatcher</description>
> <servlet-class></servlet-class>
>         <init-param>
>           <param-name>servlet-class</param-name>
> <param-value>org.apache.cocoon.servletservice.DispatcherServlet</param-value>
>         </init-param>
>         <load-on-startup>1</load-on-startup>
>       </servlet>
> Carsten added the code that rewrites a web.xml in order to use the
> shielding stuff, see
> org.apache.cocoon.maven.deployer.WebApplicationRewriter.shieldWebapp.
>  It shouldn't be too difficult to use it for our purpose too.

To be honest, I don't get most of what you're saying. Do you propose to write a wrapper for
each and
every Filter one intend to use?

- --
Giacomo Pati
Otego AG, Switzerland -
Orixo, the XML business alliance -

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