How to assign and display an attribute value from backing bean?

Question

Hello all,
I am using Jdev 11g. I have a form page which has two inputText attributes The first one implements a valueChangeListener feature. When the user enters a value in the first field, a backing bean function will be invoked through the valueChangeListener . In this backing bean function, based on the value in the first field, I want to assign the value to the second field and display it on the page. Can somebody help me how to achieve this?
Thanks,
John

Answer 1

Hi John,
Here is small example.
Create two string variables in your backing bean and generate accessors for them.
    private String text;
    private String text1;
    public void setText(String text) {
        this.text = text;
    public String getText() {
        return text;
    public void setText1(String text1) {
        this.text1 = text1;
    public String getText1() {
        return text1;
    }Bind this variables to the value property of the input texts you have. Add the valuechangedlistener for the first input text (and also set autosubmit to true for that item). Also, add the id of the first input text as partial triggers for the second input text. Like,
        <af:inputText label="Label 1"
                      binding="#{backingBeanScope.backing_untitled1.it1}"
                      id="it1"
                      valueChangeListener="#{backingBeanScope.backing_untitled1.textValueChanged}" autoSubmit="true"
                      value="#{backingBeanScope.backing_untitled1.text}"/>
        <af:inputText label="Label 2"
                      binding="#{backingBeanScope.backing_untitled1.it2}"
                      id="it2"
                      value="#{backingBeanScope.backing_untitled1.text1}"
                      partialTriggers="it1"/>Finally, put the logic on your value changed listener. Like,
    public void textValueChanged(ValueChangeEvent vce){
        this.setText1("Hi " + vce.getNewValue());
    }Now, when you run the page and enter your name in the first input text, the second input text will display Hi <your_name>
HTH.
-Arun