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reentry-not-allowed is allowing to get back into task flow

ADFfanJan 26 2015 — edited Jan 26 2015

Hello experts,   I have a  bounded task flow with only 2 pages (page1 and page2) with navigation from page1 to page2.   I have set up  the property Task Flow Reentry  to  reentry-not-allowed.

In my main page,  I have added this task flow as region.   When I run  the main page,  I see task flow got executed and page1 is displayed.

I am able to navigate to  page2.   Now if I click  browser  back button,  I did not get InvalidTaskFlowEntry  exception.

I want to get this exception and then catch it and display proper message to the user.  When I click back button,  it is going to  browser home page and then when I click forward button, it is entering into the task flow and displaying last executed page.  Also  I can click a button in the page when it renters into the task flow and no exception.

I am using Jdev  11.1.1.6.  

Appreciate your help.

thanks

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Locked on Feb 23 2015
Added on Jan 26 2015
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