How do I prepopulate a bind variable from a session variable?

Question

Hello. I have a scenario where I have a customer Id I need to set as the bind variable and then execute the query before the page comes up. How do I do this? Here's what I've tried (and why it didn't work)
- I tried using the 'ExecuteWithParameters' method from the view object as a method in the task flow. I would then pass in the session variable as a parameter. For some reason it can never find the executewithparameters method on the view object. I'm guessing because it wants to go through the application module
Next ...
- I created a client method in the AM call setCust Id with the following code:
public void setUserNameBind(String userName)
System.out.println("Set param:" + userName);
getFndUserVVO1().setNamedWhereClauseParam("UserNameBind", userName);
getFndUserVVO1().executeQuery();
This worked. However when I ran the debug it instantiates the VO again but with a NULL for the bind parameter. So on the screen it always has the NULL VO.
Finally ...
- I tried to put the method in the binding for the page as a method call. However, the method never got called before the page came up.
This seems like a pretty simple problem. Any ideas?
Thanks!

Answer 1

Hi,
1 - create a bind variable and add it to the ViewObject query
2 - drag the ExecuteWithParams operation under the ViewObject (DataControl Palette) to the page
3 - this is created as a button. In the source editor (NOT THE VISUAL EDITOR), delete the button so the binding remains
4 - for the bind variable in the ExecutWeithParams, set its value to #{sessionScope.attribute_name}
5 - in the bindings file, under executables, create an "invokeAction" entry and point it to the executeWithParams operation
Frank