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WPS - Saving Context-Root on start-up for a portal

 
Greenhorn
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I need to call one portal from another (IBM to JSR 168). Both Portals are in different WAR modules. I would like to save the Context-Root of the target to some common area which both portlets may reach e.g. DynaCache. However determining the context root of the target portal is my problem.
I tried using a servlet which loaded on startup but the init() is called and with access to the ServletConfig object I don't see how I can get it as such info is not available.
Ideally, I want to do something like request.getRequestURI() but first I'd have to force the doGet() to be called - not sure how this can be done. Alternatively, using MBeans, perhaps I could query the container for the context root.
My understanding is wiring is not supported for this.

So - any ideas on how I can get the Context Root of another portal?
 
Greenhorn
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can you be a bit clear....

Do you want to call a Portal from another Portal or

a Portlet from another Portlet ???
 
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