11g: contextual events - how I fires on the change of currency?

Hello!

After posting a question here: 11g: bounded task flows, need help and advice!
I read the article on http://technology.amis.nl/blog/3365/adf-11g-how-events-in-one-region-cause-other-regions-to-refresh because I need to refresh region B when the user selects in the region A.

Now, the comments in this article suggest that contextual events are the mechanism built for that use case. So I tried that first. Online help suggests that this is what I need.

I have read online help and created an event and defined a producer and consumer card in the case where in the page of def. in the parent aid now shows how to raise the event when a methodAction binding is executed. But I need to raise the event when the user selects a row in the table of A region.

1. How do I do that? Where do I put the event? Aid says it is possible, but does not show how. Add a selection listener to support bean and call the event link from active methodAction from there? Or is there a better way?
2. I feel, that - when I use the event to call the ExecuteWithParams method binding consumer - just the VO of the consumer query is executed. That's great. But how to reset the stream to the original action? Just refresh the VO is not enough. I need to reset the stream to the original action (showing a view).

I read http://www.oracle.com/technology/products/jdev/tips/fnimphius/taskflow_in_popup/taskflow_in_popup.html and now I'm completely confused. Use the input parameters or events? If I use events, how to reset (refresh) the task flow?

Thank you

Sascha

Published by: Sascha Herrmann on October 19, 2008 15:33

Sascha,

prices area A action B the same transaction? If so and the contents of box B is a dependency of the VO used in A so you have contextual events at all. So if I guess this A region contains a list of departments and region B the employee table (where DepartmentsVO is the parent of EmployeeVO) then do the following

-Navigate to the definition of region B region in the file pageDef
-the right mouse context menu allows to add parameters and then a parameter (for example changeIndicator)
-thread the parameter changeIndicator to the current line of DepartmentsVOIter key str (it's an exposed method directly on the iterator)
-Set the region to ifNeeded binding refresh
-set a partial trigger on the regionB to point to the departmentTable for the region is updated whenever the table changes line

The parameter that you added just does nothing except it tells the region that binds the region needs to refresh. You that he point to the key of the iterator Department line because it provides the changed value.

If regionB VO is not dependent on the DepartmentVO, then you need create a setting on the taskflow bounded, which takes the value of changeIndicator to write it in pageFlowScope.currRowKey. Then create a currentRowWithKey method that is defined as a default activity and it wire up to pageFlowScope.currRowKey

Frank

Tags: Java

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