Posted on

Get the display value of selectonechoice or LOV in bean – Oracle ADF

I found one approach to get the display value of LOV in managed bean using  ADFUtils.evaluateEl method.

Say if you have a value change listener for an lov,  valueChangeEvent.getNewValue() gives the index of the value. To get the display value of the lov, use below logic  :

public void onDeptNameChange(ValueChangeEvent valueChangeEvent) {

Object deptNameAttribute = ADFUtils.evaluateEL("#{bindings.deptName.items['"+valueChangeEvent.getNewValue().toString()+

"'].label}");

String deptNameStr = deptNameAttribute .toString();  // This should have the selected display value of lov.

}

Say if you want to access the display value of LOV, in any other method, other than valueChange listener, then use below code :

Object deptNameAttribute = ADFUtils.evaluateEL("#{bindings.deptName.items['"+ADFUtils.getBoundAttributeValue("deptId")+"'].label}");

Here deptId is the code of this lov.  Hope this is helpful.

Happy learning with Techartifact……

Posted on

Set value in attribute in binding in Oracle ADF

Requirement – how to set value of attribute value in binding…

Solutions – you can use this expression –

JsfUtils.setExpressionValue("#{ManagedBean.empName}", "Vinay");

You have to add this method in JsfUtils class.

Note to call the getters and setters via your EL expression, you don’t include the get/set prefix.

 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
    //I could do a more comprehensive check and conversion from the object
    //to the equivilent primitive but life is too short
    Class bindClass = valueExp.getType(elContext);
    if (bindClass.isPrimitive() || bindClass.isInstance(newValue)) {
      valueExp.setValue(elContext, newValue);
    }
  }

Happy coding in Techartifact with Vinay…

Posted on

Get the value from SelectOneChoice or LOV not the index in bean -Oracle ADF

Another approach i am sharing with you.Normally we want to get selectOneChoice value and we normally get the index.
We will creating an attribute in the selectOneChoice items and the selected value lable.

                        <af:selectOneChoice value="#{bindings.reportType.inputValue}"
                                          required="#{bindings.reportType.hints.mandatory}"
                                          shortDesc="#{bindings.reportType.hints.tooltip}"
                                          id="soc1" partialTriggers="cb2"
                                          autoSubmit="true"
                                          styleClass="hrt_reporting"
                                          valueChangeListener="#{pageFlowScope.ReportFilterBean.reportTypeVC}"
                                          binding="#{pageFlowScope.ReportFilterBean.reportTypeChoice}">
                        <f:selectItems value="#{bindings.reportType.items}"
                                       id="si2"/>
                        <f:attribute name="rowIndexVal" value="#{bindings.reportType.items[bindings.reportType.inputValue].label}"/>
                      </af:selectOneChoice>

and in the bean you can write as 

        valueChangeEvent.getComponent().processUpdates(FacesContext.getCurrentInstance());
        Map map = ((UIComponent)valueChangeEvent.getSource()).getAttributes();
        String reportTypeValue = (String)map.get("rowIndexVal");

that’s it, you are done.

Happy coding with Vinay Kumar in techartifact,,