Using a SelectOneChoice to retrieve a value in to a variable...

Question

AAAAaaah. I've spent far too much time on what should be a very simple operation - can somebody help me....
(JDeveloper 10.1.3.4. Oracle ADF on Oracle ADF BC.)
I have a backing bean called HspShopBacking with a simple Date variable "selectedTime":
public class HspShopBacking
  private oracle.jbo.domain.Date selectedTime;
  getSelectedTime(){...}
  setSelectedTime(oracle.jbo.domain.Date selectedTime){...}
}I would like to use a SelectOneChoice to display a list of times from my ViewObject: DELIVERY_TIMES and retrieve the value in to my selectedTime attribute.
Unlike most of the examples I can find I DON'T want my SelectOneChoice to have an existing Iterator as it's base datasource and then to retrieve the selected value from that iterator (because I've got various commits happening that might commit the updated value).
In Forms this was SO easy.....can somebody PLEASE point me in the direction of the relevant documentation or tell me what I need to do!!

Answer 1

I have a habit of answering my own questions ... these are the steps I took for retrieving a value from a SelectOneChoice component in to an individual variable, accessible from a backing bean (see the bottom of this post for links to the other posts that assisted me):
As an example, assume that I have Emp and Dept view objects in my model. I want a SelectOneChoice of departments that will take the selected Department Name in to a separate variable for access in the backing bean (and therefore will not use the Emp view at all).
1) To easily create a SelectOneChoice object (rather than try to create it manually), open the Emp view's data control up in the Data Control pallette and drag the Deptno column on to your JSPX (somewhere within the af:form tags). This is just so we can create the control using the wizard, we will be removing all references to Emp later.
2) From the context menu choose Single Selections->ADF Select One Choice
3) Select the Dept view iterator as the List Data Source
4) For now (to complete the wizard) select Deptno from the Base Data Source Attribute list, and choose Deptno from the List Data Source Attribute list (we will be changing these values in the XML once the wizard is complete).
5) Set the display attribute to Dname
6) Click OK
7) Open the source of the JSPX page where you created your SelectOneChoice right click and "Go to Page Definition"
8) In the structure pane, Right-click on executables->Insert inside executables->variableIterator
9) Right click on the created variables node in the Structure Pane->Insert inside variables->Variable
10) Give your variable a name (such as selectedDepartmentName)
11) I gave it a type of java.lang.Object (for maximum flexibility - I will be type checking inside the Backing Bean)
12) Select the bindings node, and from the right-click menu choose Insert inside bindings->attributeValues
13) From the wizard choose the "variables" data collection, and the attribute you named earlier (e.g. selectedDepartmentName), click OK
14) From the source xml of the attributeValues object you just created, change the id to something meaningful (e.g. selectedDepartmentValues)
15) In the structure pain, open the bindings node and Right click the list iterator binding that was created when you added the SelectOneChoice object (will be called something like EmpDeptNo) and choose "Go To Source"
15) From the source xml change the IterBinding="EmpIterator" to IterBinding="variables"
16) Change <Item Value="Deptno"/> to <Item Value="selectedDepartmentName">
So in summary the JSPX page will have:
                  <af:selectOneChoice value="#{bindings.EmpDeptNo.inputValue}"
                                      label="#{bindings.EmpDeptNo.label}">
                    <f:selectItems value="#{bindings.EmpDeptNo.items}"/>
                  </af:selectOneChoice>The page definition will have:
<executables>
    <iterator id="DeptIterator" RangeSize="-1"
              Binds="Dept" DataControl="AppModuleDataControl"/>
    <variableIterator id="variables">
      <variable Name="selectedDepartmentName" Type="java.lang.Object"/>
    </variableIterator>
</executables>
<bindings>
    <list id="EmpDeptNo" IterBinding="variables"
          StaticList="false" ListOperMode="0" ListIter="DeptIterator"
          NullValueFlag="1" NullValueId="EmpDeptNo_null">
      <AttrNames>
        <Item Value="selectedDepartmentName"/>
      </AttrNames>
      <ListAttrNames>
        <Item Value="Dname"/>
      </ListAttrNames>
      <ListDisplayAttrNames>
        <Item Value="Dname"/>
      </ListDisplayAttrNames>
    </list>
    <attributeValues IterBinding="variables" id="selectedDepartmentValues">
      <AttrNames>
        <Item Value="selectedDepartmentName"/>
      </AttrNames>
    </attributeValues>
</bindings>And your backing bean can access the value using:
    FacesContext fc = FacesContext.getCurrentInstance();
    ValueBinding vb = fc.getApplication().createValueBinding("#{bindings.selectedDepartmentValues}");
    AttributeBinding ab = (AttributeBinding) vb.getValue(fc);
    String dName = (String) ab.getInputValue() ;References:
Geting variable value in backing bean
http://www.oracle.com/technology/products/jdev/tips/mills/listvalue/listbindingvalue.html