Implementation of PPR [Partial Page Rendering] in OAF Page

Let us try to implement partial page rendering for a text item.Following is a small requirement:

If value of TextItem1 is null then TextItem2 will not be appreared on UI.

If value of TextItem1 is not null then TextItem2 will be appreared on UI.

1. Create a New OA Workspace and Empty OA Project

File> New > General> Workspace Configured for Oracle Applications

File Name -- PPRProj

Project Name – PPRDemoProj

Default Package -- xxcust.oracle.apps.fnd.pprdemo

2. Create Application Module AM

PPRDemoProj right click > New > ADF Business Components > Application Module

Name -- PPRAM

Package -- xxcust.oracle.apps.fnd.pprdemo.server

Check Application Module Class: PPRAMImpl Generate JavaFile(s)

3. Create a PPRVO View Object

PPRDemoProj> New > ADF Business Components > View Objects

Name – PPRVO

Package – xxcust.oracle.apps.fnd.pprdemo.server

In Attribute Page

Click on New button and create transient primary key attribute with the following properties:

Attribute	Property
Name	RowKey
Type	Number
Updateable	Always
Key Attribute	(Checked)

Click New button again and create transient attribute with the following properties:

Attribute	Property
Name	TextItem2Render
Type	Boolean
Updateable	Always

Note – No Need to generate any JAVA files for PPRVO

4. Add Your View Object to Root UI Application Module

Right click on PPRAM > Edit PPRAM > Data Model >

Select PPRVO in Available View Objects list and shuttle to Data Model list

5. Create a OA components Page

PPRDemoProj right click > New > OA Components > Page

Name – PPRPG

Package -- xxcust.oracle.apps.fnd.pprdemo.webui

6. Modify the Page Layout (Top-level) Region

Attribute	Property
ID	PageLayoutRN
Region Style	pageLayout
Form Property	True
Auto Footer	True
Window Title	PPR Demo Window Title True
Title	PPR Demo Page Header
AM Definition	xxcust.oracle.apps.fnd.pprdemo.server.PPRAM

7. Create the Second Region (Main Content Region)

Right click on PageLayoutRN > New > Region

Attribute	Property
ID	MainRN
Region Style	messageComponentLayout

8. Create Two Text Items

Create First messageTextItem --

Right click on MainRN > New > messageTextInput

Attribute	Property
ID	TextItem1
Region Style	messageTextInput
Prompt	Text Item1
Length	20
Disable Server Side Validation	True
Disable Client Side Validation	True
Action Type	firePartialAction
Event	TextItem1Change
Submit	True

Note -- Disable Client Side Validation and Event property appears after you set the Action Type property to firePartialAction

Create Second messageTextItem --

Select MainRN right click > New > messageTextInput

Attribute	Property
ID	TextItem2
Region Style	messageTextInput
Prompt	Text Item2
Length	20
Rendered	${oa.PPRVO1.TextItem2Render}

9. Add Following code in PPRAMImpl.java

import oracle.apps.fnd.framework.OARow; 
import oracle.apps.fnd.framework.OAViewObject; 
import oracle.apps.fnd.framework.server.OAApplicationModuleImpl; 
import oracle.apps.fnd.framework.server.OAViewObjectImpl;

public void handlePPRAction()  
{  
 Number val = 1; 
 OAViewObject vo = (OAViewObject)findViewObject("PPRVO1");

 if (vo != null)  
 {  
  if (vo.getFetchedRowCount() == 0)  
  {  
   vo.setMaxFetchSize(0);  
   vo.executeQuery();  
   vo.insertRow(vo.createRow());  
   OARow row = (OARow)vo.first();  
       
   row.setAttribute("RowKey", val); 
   row.setAttribute("TextItem2Render", Boolean.FALSE);    
  } 
 } 
}

10. Implement Controller for Page

Select PageLayoutRN in Structure pane right click > Set New Controller

Package Name -- xxcust.oracle.apps.fnd.pprdemo.webui

Class Name – PPRCO

Write following code in processFormRequest function of PPRCO Controller

import oracle.apps.fnd.framework.OARow; 
import oracle.apps.fnd.framework.OAViewObject;

public void processRequest(OAPageContext pageContext, OAWebBean webBean) 
{ 
 super.processRequest(pageContext, webBean); 
 PPRAMImpl am = (PPRAMImpl)pageContext.getApplicationModule(webBean); 
    
 am.invokeMethod("handlePPRAction"); 
}

public void processFormRequest(OAPageContext pageContext, OAWebBean webBean) 
{ 
 super.processFormRequest(pageContext, webBean); 
      
 PPRAMImpl am = (PPRAMImpl)pageContext.getApplicationModule(webBean); 
 OAViewObject vo = (OAViewObject)am.findViewObject("PPRVO1"); 
 OARow row = (OARow)vo.getCurrentRow(); 
      
 if ("TextItem1Change".equals(pageContext.getParameter(EVENT_PARAM))) 
 { 
  if (pageContext.getParameter("TextItem1").equals("")) 
  { 
   row.setAttribute("TextItem2Render", Boolean.FALSE); 
  } 
  else 
  { 
   row.setAttribute("TextItem2Render", Boolean.TRUE); 
  } 
 } 
}

11. Congratulation you have successfully finished. Run Your PPRPG page and Test Your Work.

Initially the page will look like:

As soon as you enter any value in the Text Item1 field the partial page rendering will occur and Text Item2 field will appear as shown in following screenshot:

Similarly if you remove the value from the Text Item1 field the partial page rendering will occur again and Text Item2 field will be hidden.

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