Handle on application module is NULL

Question

Oracle JDeveloper 12c: I am trying to run a method in AM from the custom bean. So I have something like this: ReportsServiceImpl svc = (ReportsServiceImpl)JSFUtils.EL("#{data.ReportsServiceDataControl.dataProvider}"); svc returns NULL where JSFUtils is the class I got from Steve's blog. Basically this used to work in 11.1.2 version ReportsServiceDataControl is correct name (checked in DataBindings.cpx) Any idea how to troubleshoot?

Answer 1

Task flows are not only for transactions, in case you can turn the data control transaction of (no controller transaction option in the task flow), but they offer a boundary of work. You are already using a task flow. There is always an unbounded task flow.this you can use too to add a method call from an application module in front of a page you want to visit.
If you are working with 12c you should definitely learn how to work with task flows. They are one of the best things add offers you for ui building.
You can create a pageDef file for the page by dragging the method onto the page and drop it as e.g. button on the page.this will create the needed entries in the databindings. If you don't need the button itself, switch to source mode and delete the button mark up. This will keep the bindings but remove the button.
// GET A METHOD FROM PAGEDEF AND EXECUTE IT
// get the binding container
BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
// get an Action or MethodAction
OperationBinding method = bindings.getOperationBinding("YourMethodAction");
if (method == null)
// handle method not found error...
// if there are parameters to set...
Map paramsMap = method.getParamsMap();
paramsMap.put("param","value")  ;    
// execute the method
method.execute();
List errors = method.getErrors();
if (!errors.isEmpty())
   // handle errors here errors is a list of exceptions!
One the pageDef is present you use the code above to access the method and execute it. There is no need to use the el you posted.
Timo