Please disable your adblock and script blockers to view this page

Search this blog

Showing posts with label Contextual Event. Show all posts
Showing posts with label Contextual Event. Show all posts

Tuesday 14 May 2013

Using Contextual Event in Oracle ADF (Region Communication)

Contextual event ,in simple terms is a way to communicate between taskflows.
Sometimes we have taskflow open in a region and have to get some values from that taskflow .
This scenario can be achieved by contextual event.

Contextual Event have two parts-
  1. Publisher Event (Producer)- As button or any component that can raise event 
  2. Handler Event (Customer)- that listens and process event published by producer
This tutorial is based on example developed on default HR schema of Oracle DB 11g
I have created two application and called first one in secod application as region.
  • Create first application using Department table of HR schema and drag Department Name on page fragment, now create publisher event (follow steps) for Department Name .
  • Select Department Name field in structure window and go to property Inspector select ContextualEvent
    click on green add icon and select event type and name for publisher event

  • Select field value from Iterator Binding
  • here you are done with publisher event or producer create a jar of this application in order to use it in second application.
  • Now start Second Application that will handle and process this event, create a page and put an output text and set its value from managed bean

  • Now create a event handler class to process published event and to make it available to page binding level , we have to create DataControl for this class.

  • Right click on event class and Click on CreateDataControl.
  • Now add this method binding to page so that it can be accessible from page binding
  • Now drag and drop taskflow from jar library on page as region by this published event will also be available to page
  • Now go to page binding and goto ContextualEvents tab ,click on subscribers tab and click on add icon this will open a popup window ,click on search button , it will show available publisher event, now select event and goto handler search option and select function that you have previously added in page binding
  • Give consumer parameter name same as event handler function

Now Run your Application - Download ADF Sample Application