How to set the Selectonechoice Value associated with MethodAction

Question

Hi All,
I am using Jdeveloper 11.1.1.5 and i have a two textbox on my page and one selectonechoice.I am fetching the values from the Master Table in the dropdown by sending the supplierVatId and SupplierPostCode and the base dataSource of the selectonechoice is my transaction table(InvoiceHeaderTable).
My jspx page source is :-
<af:inputText value="#{bindings.Suppostcode.inputValue}"
binding="#{backingBeanScope.backing_parkSupplierId.it7}"
id="it7">
</af:inputText>
<af:inputText value="#{bindings.Suppvatid.inputValue}"
binding="#{backingBeanScope.backing_parkSupplierId.it8}"
id="it8">
<f:validator binding="#{bindings.Suppvatid.validator}"/>
</af:inputText>
</af:panelFormLayout>
<af:selectOneChoice value="#{bindings.supplierid.inputValue}"
binding="#{GeneralManagedBean.suppid}"
id="soc1">
<f:selectItems value="#{bindings.supplierid.items}"
binding="#{GeneralManagedBean.suppiditems}"
id="si1"/>
</af:selectOneChoice>
and this is my pageDef code :-
<attributeValues IterBinding="InvoiceheaderView1Iterator" id="Suppostcode">
<AttrNames>
<Item Value="Suppostcode"/>
</AttrNames>
</attributeValues>
<attributeValues IterBinding="InvoiceheaderView1Iterator" id="Suppvatid">
<AttrNames>
<Item Value="Suppvatid"/>
</AttrNames>
</attributeValues>
<methodAction id="getSupplierIdfromDB" RequiresUpdateModel="true"
Action="invokeMethod" MethodName="getSupplierIdfromDB"
IsViewObjectMethod="false" DataControl="SupplierDetailImpl"
InstanceName="SupplierDetailImpl.dataProvider"
ReturnName="data.SupplierDetailImpl.methodResults.getSupplierIdfromDB_SupplierDetailImpl_dataProvider_getSupplierIdfromDB_result">
<NamedData NDName="supplierpostcode"
NDValue="#{bindings.Suppostcode.inputValue}"
NDType="java.lang.String"/>
<NamedData NDName="suppliervatid"
NDValue="#{bindings.Suppvatid.inputValue}"
NDType="java.lang.String"/>
</methodAction>
<list IterBinding="InvoiceheaderView1Iterator" id="supplierid"
DTSupportsMRU="true" StaticList="false"
ListIter="getSupplierIdfromDBIterator">
<AttrNames>
<Item Value="Suppid"/>
</AttrNames>
<ListAttrNames>
<Item Value="supplierid"/>
</ListAttrNames>
<ListDisplayAttrNames>
<Item Value="supplierid"/>
</ListDisplayAttrNames>
</list>
</bindings>
And i have a button on the page called as "Clear DropDown".Now on click of Clear DropDown button  i need to clear the dropdown list and need to set a new value in the SupplierId selectonechoice.For the testing purpose it can be a static value like "Shah".
I am trying to do like this but no help ..
public String clearDropDown() {
ValueExpression suppid1 = null;
String id = "Shah";
suppid1 =
elFactory.createValueExpression(elContext, "#{bindings.supplierid.attributeValue}",
Object.class);
suppid1.setValue(elContext,id);
AdfFacesContext.getCurrentInstance().addPartialTarget(suppid);
AdfFacesContext.getCurrentInstance().addPartialTarget(suppiditems);
return null;
Please suggest!!!
Regards,
Shah

Answer 1

While setting the value, it is giving me this warning in the logs :-
*<FacesCtrlListBinding> <getInputValue> ADFv: Could not find selected item matching value Shah of type: java.lang.String in the list-of-values*.
I know that the Shah is not present in the List but how do i clear the list and set the New Value which is "Shah".
Please Suggest!!
Regards,
Shah