OAF by SSPatil

 

Partial Page Rendering (PPR) in OAF

PARTIAL PAGE RENDERING (PPR) IN OAF

PPR is a technology that lets you refresh a specific part of a page when you want to make a UI change instead of having to refresh (redraw) the entire page.

Gives users a more responsive and interactive application

Improves application Performance

Steps for Partial Page Rendering:-

First create one workspace and project.

Create the AM.

Create one Page and attach the page AM to it.

Create one Entity object and VO and attach to AM.

Create the controller.

For PartialRendering here I am using my data insert project only.

The structure of my data insert project is like this.

The output of my Data Insert page is like.

For partial Rendering in the above example 

If the position code is “DIRECTOR” it should hide the managerID

For this first make the position code item as message choice.

position-->itemStyle-->messegeChoice

                  DATA-->

piclistViewInstance-->Give the view instance name

                                    PicklistDisplayAttribute-->what we want to display in message choice

                                                                                 the column name of that(Meaning)

                                    PiclistValueAttribute-->what value shuld take.

Next create one PartialVO without any query.

And after that create one transient attriobute.

Right click on PartialVO and select edit.

Click new.

U will get the window for creating new attribute set the following properties.

Name:- ManagerIDRendered

Type:- BOOLEAN.

 Click Apply and ok.

After creating the partialVO.

Select the positionCode item and in the property inspector set the following properties.

Client Action---- >

           Action Type-- > firePartialAction.

           Event --- > positionEvent.

Select the managerID item and set the following properties

managerid-->visual

                        ->Rendered-->${oa.<Partial View Instance Name>.<New Attribute Name>}

                                                ${oa.PartialVO1. ManagerIdRendered}

Create one method in AM java file

  public void Partialvo()

    {

              OAViewObject vo=getPartialVO1();   //we have to create one new partialvo

              if(!vo.isPreparedForExecution())

              {

               vo.executeQuery();

              }

             

              OARow row=(OARow)vo.createRow();

              vo.insertRow(row);

              vo.first().setAttribute("ManagerIdRendered",Boolean.TRUE);

                                                                         

    }

Create the method for hide and show of managerID

 public void showManager(String PositionCode)

    {

       OAViewObject vo=getPartialVO1();

       if(PositionCode.equalsIgnoreCase("DIRECTOR"))

       {

         vo.first().setAttribute("ManagerIdRendered",Boolean.FALSE);

       }

       else

       {

           vo.first().setAttribute("ManagerIdRendered",Boolean.TRUE);

       }

    }

Write the following code in processRequest of the controller.

 OAApplicationModule am=(OAApplicationModule)pageContext.getRootApplicationModule();

 //call the method  we created for creating new row

am.invokeMethod("Partialvo");

Write the following code in the processFormRequest.

   if(eventName.equalsIgnoreCase("positionEvent"))  //the event name that we given in

                                                                                                position column

    {

      String position=pageContext.getParameter("PositionCode"); //the id of the position column

     

      Serializable [] parm={position};

      am.invokeMethod("showManager",parm);//we have to call the method that we created for showing managerid

    }

  }

Run the page to see the output.

If u select the position as director the manegerID should hide.