Most Used Codes in ADF (Iterate over ViewObject, get Value from pageFlow Scope variable)

Iterate Over View Object-

Some times we need to iterate in table to check for some validation as we have  to check for duplicate record, we want to delete all data of table with one click.

then we have to get all rows of table- this is a very common use case in ADF, so you can use following snippet of code to do this

1. Using AllRowInRange method to get rows available in range

  ViewObject vo=am.getViewObject();


   // Get All Rows in range of ViewObject in an Array
    Row[] rArray=vo.getAllRowsInRange();
    
    //Loop over array of Rows
    for(Row r:rArray){

       /*your operation code*/

       }

2. Using RowSetIterator-

  ViewObject vo = this.getViewObject();
       
       //Create RowSetIterator
        RowSetIterator rsi = vo.createRowSetIterator(null);
       //Iterate Over this to get all rows
        while (rsi.hasNext()) {
            Row nextRow = rsi.next();
            
        }
        rsi.closeRowSetIterator();

Get Value from taskFlow parameter(Using pageFlow Scope)-

we can get value from TaskFlow parameter using pageflow scope and can use it in Our Bean.

Suppose we have defined a parameter in page to pass Session_Id.

We can get it using pageflow scope

Integer sessionId = Integer.parseInt(resolvEl("#{pageFlowScope.Session_Id}"));

 Code For resolvEl-

    public String resolvEl(String data) {
        FacesContext fc = FacesContext.getCurrentInstance();
        Application app = fc.getApplication();
        ExpressionFactory elFactory = app.getExpressionFactory();
        ELContext elContext = fc.getELContext();
        ValueExpression valueExp = elFactory.createValueExpression(elContext, data, Object.class);
        String Message = valueExp.getValue(elContext).toString();
        return Message;
    }

 

ADF Basics: Set Default Values in Entity Object for every CreateInsert

Sometimes we have to set some same(default) values for each new row for this we use literal value option in EntityObject XML file or we can set that value in EO(EntityObject) Impl class.
EOImpl Class has a method named

 protected void create(AttributeList attributeList) {

        super.create(attributeList);

}

You can set default values there
For this we have to create Entity Impl class of EntityObject , Open EntityObject and select Java tab and click on edit icon

Check Accessors and Create Method checkbox

Now set values using accessors like this -

    /**
     * Add attribute defaulting logic in this method.
     * @param attributeList list of attribute names/values to initialize the row
     */
    protected void create(AttributeList attributeList) {
        //Setting default values
        setEmail("example@gmail.com");
        setPhoneNumber("99999999");
        super.create(attributeList);
    }

or can set in Literal Value of EO xml file

This is how you can set default values in Entity Object

Shuttle Component in Oracle ADF (Allow Multiple Selection), Get Selected values from Shuttle Component

Hello All

Hope you all are doing well :) 

Shuttle component supports multiple selections at Runtime, when we need to select multiple records at runtime then we can use Shuttle Component.

Now we see how to use shuttle component (af:selectManyShuttle) in Oracle ADF

Follow these steps-

• Prepare model for Employees table of HR Schema(Create EO,VO and AM)
• Now drag Employees ViewObject from DataControl to page and select multiple selection-->ADF Select Many Shuttle-

• Now edit binding for this Shuttle Component, choose attribute that you want to show and also base attribute-
  
  
  
   
  
• Now it will look like this, drag a button to get selected attribute of this shuttle component
  
   
  Now write code on button's actionEvent to get selected value from Shuttle-
  
  
  

  import oracle.adf.model.BindingContext;
  import oracle.binding.BindingContainer;
  
      /*****Generic Method to get BindingContainer of current page, fragment or region**/
      public BindingContainer getBindingsCont() {
          return BindingContext.getCurrent().getCurrentBindingsEntry();
      }
  

  
  

   public void getSelectedValue(ActionEvent actionEvent) {
        //Get Binding Continer of Page
          BindingContainer bc = this.getBindingsCont();
       //Get shuttle binding from pagedef
          JUCtrlListBinding listBindings = (JUCtrlListBinding)bc.get("Employees1");
      //Get Selected Values
          Object str[] = listBindings.getSelectedValues();
      //Iterate over selected values
          for (int i = 0; i < str.length; i++) {
              System.out.println(str[i]);
          }
      }
  

  
  When you run this it should look like this and your Shuttle is ready