Using af:switcher in ADF Faces to dynamically render page components

Hello all,,
Sometimes we need to display page components on a condition basis , this can be achieved in adf using af:switcher component
Normally switcher component is a collection of multiple facets and on a given condition it decides that which facet should be rendered.

How to use af:switcher- see the steps

• Create a Fusion web application and create business components using Departments and Employees table (HR Schema)

•  Now create a page in view Controller and drop a switcher component from component palette

• Switcher is pure server side component so it doesn't have any client representation, so next move is to add facets in af:switcher, to add facets in switcher,
  just right click--insert inside af:switcher-- facet

• As in this tutorial i am going to show 2 tables(Departments U& Employees) so added 2 facets in af:switcher

• Now time to drop tables in corresponding facets, Employees Table in Emp, Departments Table in Dept

•  Now i have created a static List that has values D for Departments and E for Employees, when user selects D the Departments table will be shown and for E Employees table will be shown

• to do this select af:switcher and go to FacetName property and open expression builder to write conditional expression

•  Now run this page and select values in list to see- how switcher works

  Download Sample App Cheers :-)

Bug in ADF 11g R2- Transient and Bind Valiable of Timestamp type

This is a bug in ADF 11g R2, and sometimes so much annoying for developer.

Bug Is-

• Suppose you have created business components for Employees table of HR Schema, there is HireDate in Employees table , see it in EntityObject-

• Now go to source and see, it is of type oracle.jbo.domain.Timestamp (default java representation of Timestamp database data type )

• Now go to Employees ViewObject and create a transient variable for DOB(Date Of Birth)  and select it as Timestamp

•  Now after this if developer tries to get or set value of this transient variable, it shows a exception (java.sql.Timestamp can not be cast to oracle.jbo.domain.Timestamp)

•  To solve this error go to Employees ViewObject and select transient attribute and go to source, se it is of type java.sql.Timestamp

 

• Change it to oracle.jbo.domain.Timestamp  and then run it
• So this is a bug when developer creates new Transient or Query bind variables of Timestamp type, ADF automatically assign it java.sql.Timestamp

Always check it when using Jdveloper 11gR2

Cheers... happy debugging

Using af:inputNumberSlider and af:inputRangeSlider for good UI in Oracle ADF

Hello All,
This tutorial is about slider component
Slider is cool and interesting component in ADF to select a single number or to select a range
there is two types of slider available in ADF Faces

1. af:inputNumberSlider (to select single value)
2. af:inputRangeSlider (to select range)

Follow steps to learn how to use slider in ADF

• Go to Component Palette and search slider and drop it  into page

• look in property inspector of slider , there are many properties to customise this component, you can change min-max values,orientation etc

•  See Horizontal and Vertical slider-

• Now to get its value in bean , bind both slider to managed bean, using binding property





    private RichInputNumberSlider numberSliderBind;
    private RichInputRangeSlider rangeSliderBind;


    public void setNumberSliderBind(RichInputNumberSlider numberSliderBind) {
        this.numberSliderBind = numberSliderBind;
    }

    public RichInputNumberSlider getNumberSliderBind() {
        return numberSliderBind;
    }

    public void setRangeSliderBind(RichInputRangeSlider rangeSliderBind) {
        this.rangeSliderBind = rangeSliderBind;
    }

    public RichInputRangeSlider getRangeSliderBind() {
        return rangeSliderBind;
    }



• now to get value of inputNumberSlider simply use binding.getValue()



 Number numberVal = (Number)numberSliderBind.getValue();



• To get Range of inputRangeSlider use this



        NumberRange sliderVal = (NumberRange)getRangeSliderBind().getValue();
        Number minVal=sliderVal.getMinimum();
        Number maxVal=sliderVal.getMaximum();



• Now Run your page and see how is it-

You can use slider for custom search, fixed range interval etc