Using a contextual event for communicating to an ADF region

A Fusion web page can have multiple task flows added as region components. The task flows added in regions works independent to each other and with limited interactions with the parent page. What if you want a region to respond to some user actions in the parent page? How do you establish a channel for passing messages or data from the containing page to the task flow activity displayed in the view port of a region component?

Oracle ADF provides a Contextual Events framework for handling such scenarios. The contextual event enables communication between the following items:

  • Parent page to region (and vice versa)
  • Region to region

Contextual event model

Contextual event model is based on a publisher ...

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