Please comment to support basic ADF library like assignment of values :)

Question

Hello,
I am asking Oracle to develop a library for basic operations like assigning values.
This is for newbies and for new components.
Reason: Java is not like pl/sql, visual basic, etc. I had bee studying for get certified on Java it takes time, once you create your own library then there is no problem the main reason is to accelerate the learning of adf programming and programming in new components
There are some examples in JSFUTIL and ADFUTIL libraries, but they are only examples.
the idea is Oracle to create
1) libraries supported and maintained by oracle for ALL the ADF components
2) same function for all components, in example, to set a value to any adf item to have the same function, and that function make the conversion, suggest the import of the correct libraries (in example to use adf number instead of java number to get autoboxing)
etc.
If you agree with this requirement to Oracle, please comment :) Thank you.

Answer 1

Thank you Frank I don't find it so difficult,
This is what I think, what do you think about.
The first concept I think and is the base for this "project" is "ADF Framework is here to make easier programming", this means if Oracle can create a library to make it easier then it makes sense with Oracle's Strategy of course; this is not because only because I'm asking. :)
If you want we can start analyzing the most basic example: assigning values.
If I execute
JSFUtils.setExpressionValue("#{bindings.Hora0.inputValue}",2);
JSFUtils.setExpressionValue("#{bindings.Hora0.inputValue}","2");
JSFUtils.setExpressionValue("#{bindings.Hora0.inputValue}",nValue); -- no matter what type of value nValue is
You get assigned, if there is a limitation to the type of the variable, then I should receive a message like "you can't use native Integer , you have to use int to get autoboxing", some message very specific to help me to solve the problem.
Why I'm asking this, because I created a simple example and I couldn't get a value assigned to that item, it was an (ADF Faces. Text an Selection)
My opinion is I should had got a better error message, so I can't fix my assignment, because for me it was all "ok", this is one of my first applications, but I think It should be easier to assign a value in adf framework.
And I'm asking a function I'll have to do myself to work using adf framework, there is no choice.
I include the example below showing I had problems assigning values, maybe it was a very obvioius mistake causes , so I started to modify it. (I'm starting on java I'm on the process to get certification).
public static void setExpressionValue(String expression, Object newValue) {
FacesContext facesContext = getFacesContext();
Application app = facesContext.getApplication();
ExpressionFactory elFactory = app.getExpressionFactory();
ELContext elContext = facesContext.getELContext();
ValueExpression valueExp =
elFactory.createValueExpression(elContext, expression,
Object.class);
//Check that the input newValue can be cast to the property type
//expected by the managed bean.
//If the managed Bean expects a primitive we rely on Auto-Unboxing
Class bindClass = valueExp.getType(elContext);
System.out.println("0 setExpressionValue");
String tipoVar = valueExp.getType(elContext).toString();
System.out.println("1 setExpressionValue:"+tipoVar);
String TipoOJDN = "class oracle.jbo.domain.Number";
System.out.println("1 IGUALDAD TipoOJDN:"+(tipoVar.equals(TipoOJDN)));
if (tipoVar.equals(TipoOJDN))
{System.out.println("Es Número");  
        System.out.println("1 setExpressionValue TipoOJDN");
        String ojdn =  newValue.toString() ;
        System.out.println("2 setExpressionValue TipoOJDN");
        Number variable = null;
        System.out.println("3 setExpressionValue TipoOJDN"+ojdn);
      //  variable = Integer.parseInt(ojdn);
        System.out.println("4.1dddd setExpressionValue TipoOJDN num");
        /*    String a1 = newValue.toString();
            Integer i1 = Integer.valueOf(a1);
            int i2;*/
            Number num;
            try {
                num = new Number(newValue);
            System.out.println("4.2 setExpressionValue TipoOJDN num:"+num);
                valueExp.setValue(elContext, num);
                System.out.println("5 setExpressionValue TipoOJDN");           
            } catch (SQLException e) {
System.out.println("exception convertin number"+newValue);
// oracle.jbo.domain.Number.formattedTextToNumber(arg0, arg1, arg2) a = (oracle.jbo.domain.Number)newValue;
else
{System.out.println("tipoVar:"+tipoVar);
// if (bindClass.isPrimitive() || bindClass.isInstance(newValue)) {
System.out.println("3 setExpressionValue:");
valueExp.setValue(elContext, newValue);
System.out.println("4 setExpressionValue:"+valueExp.getValue(elContext));
ViewObjectImpl view = this.getSomeView();
VariableValueManager vm = view.ensureVariableManager();
vm.setVariableValue("bindVariableName", value);
view.executeQuery();
*/