Filling SelectOneChoice From Backingbean

On of the major component in tha ADF RC component is a af:selectOneChoice. You can fill this component from backingbean by tow ways:

A) Fill SelectOneChoice Component Programmatically:
1-In the backingbean you can define a variable that hold the selected Value (the value which you are select from selectOneChoice component ) [e.g public String selectedValue;] and make its setter and getter.
2- In the backingbean you can define an array of selectItem that will fill the selectOneChoice(e.g. public SelectItem[] elements = null; ) and make its getter and setter.
3- In the getter of selectItem write this code :

	BindingContainer bindings = getBindings();
	DCIteratorBinding dciter =(DCIteratorBinding) bindings.get("UCustomerView1Iterator");
	int length = dciter.getViewObject().getRowCount();
	elements = new SelectItem[length];
	SelectItem item = null;
	for (int i = 0; i < length; i++)
	{
	Row rw = dciter.getRowAtRangeIndex(i);
	if (rw != null)
	{
	item = new SelectItem();
	item.setValue(rw.getAttribute("Id").toString());
	item.setLabel(rw.getAttribute("Name").toString());
	}
	elements[i] = item;
	}
	return elements;

view raw items.java hosted with ❤ by GitHub

where : UCustomerView1Iterator is the Iterator which its data will fill the selectOneChoice (You must add this iterator in the pageDef).

You backingbean it should be like this :
-----------------------------------------------

	public SelectItem[] elements = null;
	public String selectedValue;
	private BindingContainer bindings;
	public BindingContainer getBindings()
	{
	if (this.bindings == null)
	{
	FacesContext fc = FacesContext.getCurrentInstance();
	this.bindings =
	(BindingContainer) fc.getApplication().evaluateExpressionGet(fc, "#{bindings}", BindingContainer.class);
	}
	return this.bindings;
	}
	public SelectItem[] getElements()
	{
	BindingContainer bindings = getBindings();
	DCIteratorBinding dciter = (DCIteratorBinding) bindings.get("UCustomerView1Iterator");
	int length = dciter.getRangeSize() & gt;
	0? dciter.getRangeSize(): new Long(dciter.getEstimatedRowCount()).intValue();
	elements = new SelectItem[length];
	SelectItem item = null;
	for (int i = 0; i & lt; length)
	;
	i++;
	{
	Row rw = dciter.getRowAtRangeIndex(i);
	if (rw != null)
	{
	item = new SelectItem();
	item.setValue(rw.getAttribute("Id").toString());
	item.setLabel(rw.getAttribute("Name").toString());
	}
	elements[i] = item;
	}
	return elements;
	}
	public void setElements(SelectItem[] elements)
	{
	this.elements = elements;
	}
	public void setSelectedValue(String selectedValue)
	{
	this.selectedValue = selectedValue;
	}
	public String getSelectedValue()
	{
	return selectedValue;
	}

view raw returnItems.java hosted with ❤ by GitHub

4- In you page Drage a selectOneChoice component and set its value to :
#{yourBean.selectedValue}.
5- Insert f:selectItems inside af:selectOneChoice and set its value to:
#{yourBean.elements}.
--------------------------------------------------------------------------------
B) The second way to fill the selectOneChioce is to use af:forEach component and I prefer this way:
1- In the pageDef make a table in the binding section that will fill your selectOneChoice(assume that you make a DeptView1 table in the binding.
2- DeptView1 Table is point to the DeptView1Iterator make its length to -1.
3- Drag and drop a selectOneChoice component and set its value to the attribute in the backingbean.
4- Insert inside selectOneChoice af:forEach component and set Items property to : #{bindings.DeptView1.rangeSet} and set Var property to row.
5- Insert Inside af:forEach af:selectItem set Value Property to #{row.Deptno} this represent the return value of the selectOneChoice if you want the return value be a name of the department set Value Property to #{row.Dname}. Set the Label Property to #{row.Dname}.(Where Deptno and Dname is the attribute of the iterator you use to fill selectOneChoice).
you can download an example from here.