Controller Parameters ? OAPageContext ? OAWebBean ? in OAF

There are two parameters in the controller:

1) OAPageContext

2) OAWebBean

OAPageContext:

• To get and set values of the fields using the OAPageContext.getparatmeter and OAPageContext.putparameter.
• To call one page to another page OAPageContext.setforwardURL.
• To redirect the current page itself use OAPageContext.forwardImmediatelyToCurrentPage (or) OAPageContext.sendRedirect and many more.

OAWebBean:

• Each and every field we have properties and the properties define the behavior of item.
• OAWebBean represents the Hierarchy/Structure of the components in the page.

WebBean represents the properties of item.


Sample Code from Controller , when you create new controller it will genrate with some default code , below is for reference.

/*===========================================================================+
 |   Copyright (c) 2001, 2005 Oracle Corporation, Redwood Shores, CA, USA    |
 |                         All rights reserved.                              |
 +===========================================================================+
 |  HISTORY                                                                  |
 +===========================================================================*/
package xxmaw.oracle.apps.po.requisition.webui;

import oracle.apps.fnd.common.VersionInfo;
import oracle.apps.fnd.framework.webui.OAControllerImpl;
import oracle.apps.fnd.framework.webui.OAPageContext;
import oracle.apps.fnd.framework.webui.beans.OAWebBean;

/**
 * Controller for ...
 */
public class HelloWorldCO extends OAControllerImpl
{
  public static final String RCS_ID="$Header$";
  public static final boolean RCS_ID_RECORDED =
        VersionInfo.recordClassVersion(RCS_ID, "%packagename%");

  /**
   * Layout and page setup logic for a region.
   * @param pageContext the current OA page context
   * @param webBean the web bean corresponding to the region
   */
  public void processRequest(OAPageContext pageContext, OAWebBean webBean)
  {
    super.processRequest(pageContext, webBean);
  }

  /**
   * Procedure to handle form submissions for form elements in
   * a region.
   * @param pageContext the current OA page context
   * @param webBean the web bean corresponding to the region
   */
  public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
  {
    super.processFormRequest(pageContext, webBean);
  }


}