ADF JSF 10.13 how do you reference a binding from a command button?

I have developed the following code as a model as I am trying to utilise ADF JSF without using a database.
I have a collection called School. This has the appropriate operations that populate the school with a number of Child. A Child simply has a firstname and a surname.
I have generated data controls for these collections and created two JSP pages and added a navigation link as follows:
index.jsp --> goToSchool (navigation) --> school.jsp
I have then added a command button to the index.jsp page. When the button is then pressed the school.jsp page is displayed. This works correctly.
I would like to override the action of the button though so that before the navigation is executed I can get a handle on the school collection and populate it so that it will be displayed on the school.jsp page.
I have previously done this in 10.12 when I had the following setup:
index.jsp --> getSchool (dataAction) --> school.jsp
by overriding the getSchool dataAction.
I have looked through the 10.13 ADF user guides and tried various different things but have not managed to successfully acheive my goal of populating the school collection when the button is pressed prior to navigating to the school.jsp page.
I would appreciate it if you could offer any advice, and if possible let me know the recommended best practices to acheive this.
Thanks in advance for your help
David

Check out the ADF Tutorial (TopLink edition) chapter 5 has a section called:
Adding a Drilldown Link
I think this is what you are looking for.
http://www.oracle.com/technology/obe/ADF_tutorial_1013/ADF_tutorial.pdf

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