Suggestions for application variables?

Hi,

Is there a way to configure/set a start up process in OPS?
 
 
 I need to set some application level variables (just once when
 application starts). It will be used by other pages .xpl files.
 
 I know I can use scop-generator to set the variable into application level. But I only need to set it once when the application starts. And not within any page.
 
 
 Is there any way to do it?
 
 
 
 Thanks,
 
 
 
 Emily Zhou



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Emily,

You can do this with Servlet Context Listeners:

http://www.orbeon.com/ops/doc/reference-listeners#servlet-context-listener

These react to Servlet context initialization and destruction. Some
listeners are in place by default in OPS, and run the following two
pipelines:

   oxf:/context/context-initialized.xpl
   oxf:/context/context-destroyed.xpl

You are free to just modify these pipelines to perform your
initialization and destruction tasks.

-Erik

PS: Note that the new names in the online documentation
(OPSServletContextListener and OPSSessionListener) only work with the
latest builds. Otherwise you should use the old names
OXFServletContextListener and OXFSessionListener, which still work for
backward compatibility.

[hidden email] wrote:

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It worked.


Thanks,

Emily Zhou

-----Original Message-----
From: Erik Bruchez [mailto:[hidden email]]
Sent: Thursday, December 08, 2005 10:17 AM
To: [hidden email]
Subject: Re: [ops-users] Suggestions for application variables?

Emily,

You can do this with Servlet Context Listeners:

http://www.orbeon.com/ops/doc/reference-listeners#servlet-context-listen
er

These react to Servlet context initialization and destruction. Some
listeners are in place by default in OPS, and run the following two
pipelines:

   oxf:/context/context-initialized.xpl
   oxf:/context/context-destroyed.xpl

You are free to just modify these pipelines to perform your
initialization and destruction tasks.

-Erik

PS: Note that the new names in the online documentation
(OPSServletContextListener and OPSSessionListener) only work with the
latest builds. Otherwise you should use the old names
OXFServletContextListener and OXFSessionListener, which still work for
backward compatibility.

[hidden email] wrote:
> Hi,
>
> Is there a way to configure/set a start up process in OPS?
>  
>  
>  I need to set some application level variables (just once when  
> application starts). It will be used by other pages .xpl files.
>  
>  I know I can use scop-generator to set the variable into application
level. But I only need to set it once when the application starts. And
not within any page.
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