Comments on: ADF 11g: how events in one region cause other regions to refresh

By: dp

dp — Thu, 23 Feb 2012 19:40:46 +0000

Thanks for this very useful information. Â The people who suggest contextual event framework didn’t understand your goal. Â While some of this could be done using the framework, your idea of truly isolated portlet style applications is very useful. Â For example, one application (portlet) allows the visitor to browse, search and select a product. Â That application returns a single UPC as a parameter. Â There may be 12 other portlet style task flows that accept a UPC as a parameter and do something with it. Â Maybe it’s an inventory look up, maybe it’s an open order summary, etc. etc. Â Heck, maybe there’s an app that takes the UPC, finds the manufacturer and maps their location. Â The point is that the individual apps don’t know anything about the other apps other than “I’m getting a UPC” or “I’m sending a UPC.”
Very nicely done. Â It’s just like the parameter passing within portlets, but only between ADF task flows.

By: Mark Woodman

Mark Woodman — Thu, 02 Feb 2012 19:08:40 +0000

Note for those having trouble with this:
The pageManager managed bean created in Step 6 needs to have a “session” scope.Â Â Download the sample and look at \ViewController\public_html\WEB-INF\adfc-config.xml if needed.

By: Muthuvel

Muthuvel — Mon, 11 Jan 2010 15:28:24 +0000

Dear Luc Bors
I tried implementing this in my application. But no luck.
the eventHandler instance is not getting created.
Can you give some lights on that…..
I am using JDeveloper Studio Edition Version 11.1.1.1.0.
I am implementing this approach for SelectionEvent.
if a single row selected, capturing in SelectionListener and the selected value put in the pageFlowScope, and the value is referenced and another region. Whenever selection changes, the value change should refresh the region.
In this implementation, managed-property value of #{pageFlowScope.eventHandler} value not initialized.
…..
Thanks
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By: Madhav Vaidya

Madhav Vaidya — Tue, 12 May 2009 14:16:46 +0000

I am using Oracle JDev Studio Edition Version 11.1.1.0.1
I created application and noticed that displaytaskflowdefinition1 is not getting refreshed although refresh is set to ‘ifNeeded’
Hence although pageManager.theValue is changed it’s not getting reflected in displaytaskflowdefinition1.
It shows old value.

Help appreciated.

By: Don

Don — Tue, 24 Feb 2009 23:24:51 +0000

Another solution
http://biemond.blogspot.com/2009/01/passing-adf-events-between-task-flow.html

By: Istvan Kiss

Istvan Kiss — Thu, 19 Feb 2009 22:26:36 +0000

I was wondering if there was any followup from Pako, how Contextual Events can be used. If yes, could you let us know?

BTW, I have a slightly different requirement, I would like to have a task flow creating an event, which than can be used as a partial trigger in the page containing the task flow. In your soultion, the Refresh=”ifNeeded” forces a task flow to refresh, but this can not be used on arbitrary ADF user interface components.

Regards, Istvan

By: Lucas Jellema

Lucas Jellema — Wed, 17 Sep 2008 06:05:50 +0000

Thanks PaKo and Annonymous for your comments. However, I am aware of the contextual events framework as such. What I do not readily see or learn from your comments is how you would apply that framework to this specific situation. Could you clarify whether that is really applicable to the situation at hand?
regards, Lucas

By: anonymous

anonymous — Sun, 07 Sep 2008 15:08:43 +0000

I like your investigations and solutions. However, in the 11g there is already a framwork solution with the name Contextual event framework for event-based communication between regions in a page. See also: http://www.oracle.com/technology/products/jdev/collateral/papers/11/newfeatures/index.html

By: PaKo

PaKo — Sat, 06 Sep 2008 17:19:08 +0000

There are Contextual Events that ADF regions expose built-in.