How to get Current Page(region) Name/ID in OA 11i

Question

We need to get the name or id of the current page, and based on the pagename, we retrieve configuration to launch specific web service.
pageContext.getPageLayoutBean().getPageFunctionName() is no sufficient. Since one page function sometimes contain multiple pages (eg, each individual page maps to one train node, all the train nods maps to one page function).
are there OA apis that I can use to get the Current Page name in controller?
I tried pageContext.getParameter("CurrrentPage") , it works great for iExpense application. However, in iRrecuiment, the parameter "CurrentPage" was not set at all.
Please advise.

Answer 1

First let me explain what I want to achieve:
I am writing one region (choice list displays the webservices based on the container region) along with the controller, and that region will be embed inside any OA application pages via OA personalization. On the runtime, I need to detect the current page (container region) name. Then, based on the configuration stored in my table, I need to query out the web services endpoint to call.
Now let me answer your question:
For example, OIEMAINPAGE.xml (OIEMainPageContainer) contains OIEReview, OIEDetail, OIEGeneral, etc, each inner region will be rendered as a page when you click the train node or link of other page. (from end user perspective)
If I call pageContext.getPageLayoutBean().getPageFunctionName() on those inner regions, it will return OIEMAINPAGE, so I can not figure out which region are rendered (displayed) on runtime. (My region are embed inside OIEMAINPAGE pagelayout region )
If I call pageContext.getParameter("CurrrentPage"), it will return (OIERview, OIEDetail etc), which are exactly what I want.
However, I have to make sure my code works for other OA application, and I already noticed that some application does not set parameter CurrentPage, instead they may set parameter Page. So, I want to know if there is API provided by OA or fnd team to return current container region (page), very similar to Form Block name.
In form, One Form function could have multiple Blocks, and they are not displayed at same time.
In OA, one function could have multiple inner container region, and they are not displayed at same time.
In form, One Form function could have mutlple Blocks, and they are not displayed at same time.
In OA, one funciton could have mulple container region, and they are not displayed at same time.