使用adf业务组件时如何从托管bean填充jsf表？

Question

I am new to ADF and it seems I am missing something. I am using the Oracle HR database. I am using Business Components as the Model. I have ViewObjects for Country, Location and Department. As well as ViewLinks by FK between Country-Location and Location-Department. I exposed a DataControl Country-> Location -> Deperatments.

So now I can build a JSF with three areas in which each is shown. If I click on a country I get the locations. If I then click on location I get the departments. That works.

But I want to show only Country and Departments. So I implemented a managed bean to make use of the iterators and populate the department table throught that bean, by binding it to the value attribute of the table. But I only have Row objects to return and due to use of BC no Class definitions which I could map my rows back to objects.

So how can I just show all Departments in a Country? What is the ADF way to do this?

My managed bean:

public class CountryDepartmensBean {

public CountryDepartmensBean() {
    super();
}

private ArrayList<Row> populate;

public ArrayList<Row> getPopulate() {
    DCBindingContainer bindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
    DCIteratorBinding countriesView1Iterator = bindings.findIteratorBinding("CountriesView1Iterator");

    DCIteratorBinding locationsView2Iterator = bindings.findIteratorBinding("LocationsView2Iterator");
    DCIteratorBinding departmentsView3Iterator = bindings.findIteratorBinding("DepartmentsView3Iterator");
    Row[] locations =  locationsView2Iterator.getAllRowsInRange();
    ArrayList<Row> employees = new ArrayList<Row>();
    for(int i = 0; i < locations.length; i++){
        locationsView2Iterator.setCurrentRowIndexInRange(i);
        departments.addAll(Arrays.asList(departmentsView3Iterator.getAllRowsInRange()));
    }

    return departments;
}

public void setPopulate(Row[] rows){

}
}

the getPopulate Method is called and returns the rows that I want, but returing rows seems to be the wrong way to go?

Answer 1

Using managed bean for this case is a wrong way itself.
All you need is to create viewObject that will match your expectation.
Create a viewObject joining Location + Department tables. Make it child to Country viewObject through viewLink.
Now you can drag&drop master-detail tables on the page.